release: version 0.6.7 🚀

Dockerfile

@@ -9,7 +9,7 @@ RUN apt update && apt install libldap-2.5-0 -y
 # Restore as distinct layers
 RUN dotnet restore ./song_of_the_day/song_of_the_day.csproj
 # Build and publish a release
-RUN dotnet publish ./song_of_the_day/song_of_the_day.csproj -o out
+RUN dotnet publish ./song_of_the_day/song_of_the_day.csproj -o out /p:EnvironmentName=Production
 
 # Build runtime image
 FROM mcr.microsoft.com/dotnet/aspnet:9.0

HISTORY.md

@@ -5,10 +5,168 @@ Changelog
 (unreleased)
 ------------
 
+Fix
+~~~
+- Attempted bugfix for crashing process on invalid spotify access token,
+  refs NOISSUE. [Simon Diesenreiter]
+
+
+0.6.6 (2025-07-20)
+------------------
+
+Fix
+~~~
+- Add additional logging, refs NOISSUE. [Simon Diesenreiter]
+
+Other
+~~~~~
+
+
+0.6.5 (2025-07-20)
+------------------
+
+Fix
+~~~
+- Configurable Cron schedules, refs NOISSUE. [Simon Diesenreiter]
+
+Other
+~~~~~
+
+
+0.6.4 (2025-07-20)
+------------------
+
+Fix
+~~~
+- Better data model for liked songs, refs NOISSUE. [Simon Diesenreiter]
+
+Other
+~~~~~
+
+
+0.6.3 (2025-07-20)
+------------------
+
+Fix
+~~~
+- Issues with index page for unauthenticated users, refs NOISSUE. [Simon
+  Diesenreiter]
+
+Other
+~~~~~
+
+
+0.6.2 (2025-07-20)
+------------------
+
+Fix
+~~~
+- Build issues, refs NOISSUE. [Simon Diesenreiter]
+
+Other
+~~~~~
+
+
+0.6.1 (2025-07-20)
+------------------
+
+Fix
+~~~
+- Remove local debugging configs, refs NOISSUE. [Simon Diesenreiter]
+
+Other
+~~~~~
+
+
+0.6.0 (2025-07-20)
+------------------
+
+Fix
+~~~
+- Formatting, refs NOISSUE. [Simon Diesenreiter]
+
+Other
+~~~~~
+- Feat: song likes and initial implementation of Spotify playlist
+  support, refs #9. [Simon Diesenreiter]
+
+
+0.5.0 (2025-07-06)
+------------------
+- Feat: add Navidrome song validator, refs #5. [Simon Diesenreiter]
+
+
+0.4.2 (2025-06-25)
+------------------
+
+Fix
+~~~
+- Broken build, refs NOISSUE. [Simon Diesenreiter]
+
+Other
+~~~~~
+
+
+0.4.1 (2025-06-25)
+------------------
+
+Fix
+~~~
+- Fix formatting, refs NOISSUE. [Simon Diesenreiter]
+- URL type, refs NOISSUE. [simon]
+
+Other
+~~~~~
+
+
+0.4.0 (2025-06-04)
+------------------
+
+Fix
+~~~
+- Some cleanup and fixing runtime bugs, refs NOISSUE. [Simon
+  Diesenreiter]
+
+Other
+~~~~~
+- Feat: implement song submission support, refs #5. [Simon Diesenreiter]
+- Feat: basic initial implementation of spotify client link validator
+  and song submission form refs: NOISSUE. [Simon Diesenreiter]
+
+
+0.3.3 (2025-05-26)
+------------------
+
+Fix
+~~~
+- Save DateTime as UTC, refs NOISSUE. [Simon Diesenreiter]
+
+Other
+~~~~~
+
+
+0.3.2 (2025-05-25)
+------------------
+
+Fix
+~~~
+- Exception thrown on LastOrDefault(), refs NOISSUE. [Simon
+  Diesenreiter]
+
+Other
+~~~~~
+
+
+0.3.1 (2025-05-24)
+------------------
+
 Fix
 ~~~
 - Fix build errors, refs NOISSUE. [Simon Diesenreiter]
 
+Other
+~~~~~
+
 
 0.3.0 (2025-05-24)
 ------------------

Makefile

@@ -2,7 +2,7 @@
 
 .PHONY: issetup
 issetup:
-	@[ -f .git/hooks/commit-msg ] || [ $SKIP_MAKE_SETUP_CHECK = "true" ] || (echo "You must run 'make setup' first to initialize the repo!" && exit 1)
+	@[ -f .git/hooks/commit-msg ] || [ ${SKIP_MAKE_SETUP_CHECK} = "true" ] || (echo "You must run 'make setup' first to initialize the repo!" && exit 1)
 
 .PHONY: setup
 setup:

song_of_the_day/.editorconfig

@@ -0,0 +1,6 @@
+[*.cs]
+
+# CS8981: The type name only contains lower-cased ascii characters. Such names may become reserved for the language.
+dotnet_diagnostic.CS8981.severity = none
+dotnet_diagnostic.CS8602.severity = none
+dotnet_diagnostic.CS8604.severity = none

song_of_the_day/.vscode/launch.json

@@ -0,0 +1,46 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "C#: SongOfTheDay Debug",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "publish Debug",
+            "program": "${workspaceFolder}/bin/Debug/net9.0/publish/song_of_the_day.dll",
+            "cwd": "${workspaceFolder}/bin/Debug/net9.0/publish/",
+            "args": [
+                "/p:EnvironmentName=Development"
+            ],
+            "serverReadyAction": {
+                "action": "openExternally",
+                "pattern": "\\bNow listening on:\\s+(https?://\\S+)"
+            },
+            "env": {
+                "ASPNETCORE_ENVIRONMENT": "Development",
+                "Logging__LogLevel__Microsoft": "Information"
+            }
+        },
+        {
+            "name": "C#: SongOfTheDay Production",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "publish Release",
+            "program": "${workspaceFolder}/bin/Release/net9.0/publish/song_of_the_day.dll",
+            "cwd": "${workspaceFolder}/bin/Release/net9.0/publish/",
+            "args": [
+                "/p:EnvironmentName=Production"
+            ],
+            "serverReadyAction": {
+                "action": "openExternally",
+                "pattern": "\\bNow listening on:\\s+(https?://\\S+)"
+            },
+            "env": {
+                "ASPNETCORE_ENVIRONMENT": "Production",
+                "Logging__LogLevel__Microsoft": "Information"
+            }
+        }
+    ]
+}

song_of_the_day/.vscode/tasks.json

@@ -0,0 +1,47 @@
+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "publish Debug",
+            "command": "dotnet",
+            "type": "shell",
+            "args": [
+                "publish",
+                // Ask dotnet build to generate full paths for file names.
+                "/property:GenerateFullPaths=true",
+                // Do not generate summary otherwise it leads to duplicate errors in Problems panel
+                "/consoleloggerparameters:NoSummary",
+                "/p:EnvironmentName=Development",
+                "-c",
+                "Debug"
+            ],
+            "group": "build",
+            "presentation": {
+                "reveal": "silent"
+            },
+            "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "publish Release",
+            "command": "dotnet",
+            "type": "shell",
+            "args": [
+                "publish",
+                // Ask dotnet build to generate full paths for file names.
+                "/property:GenerateFullPaths=true",
+                // Do not generate summary otherwise it leads to duplicate errors in Problems panel
+                "/consoleloggerparameters:NoSummary",
+                "/p:EnvironmentName=Production",
+                "-c",
+                "Release"
+            ],
+            "group": "build",
+            "presentation": {
+                "reveal": "silent"
+            },
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

song_of_the_day/Auth/LdapAuthenticationService.cs

@@ -1,15 +1,16 @@
 public class LdapAuthenticationService : IAuthenticationService
 {
     private readonly IConfiguration _configuration;
+    private LdapIntegration _ldapIntegration;
 
-    public LdapAuthenticationService(IConfiguration configuration)
+    public LdapAuthenticationService(IConfiguration configuration, LdapIntegration ldapIntegration)
     {
         _configuration = configuration;
+        _ldapIntegration = ldapIntegration;
     }
 
     public bool Authenticate(string username, string password)
     {
-        var ldapInstance = LdapIntegration.Instance;
-        return ldapInstance.TestLogin(username, password);
+        return _ldapIntegration == null ? false : _ldapIntegration.TestLogin(username, password);
     }
 }

song_of_the_day/Auth/PhoneClaimCodeProviderService.cs

@@ -2,23 +2,24 @@ public class PhoneClaimCodeProviderService
 {
     private Dictionary<string, string> _phoneClaimCodes;
     private Dictionary<string, string> _phoneClaimNumbers;
+    private SignalIntegration _signalIntegration;
 
-    public PhoneClaimCodeProviderService()
+    public PhoneClaimCodeProviderService(SignalIntegration signalIntegration)
     {
         _phoneClaimCodes = new Dictionary<string, string>();
         _phoneClaimNumbers = new Dictionary<string, string>();
+        _signalIntegration = signalIntegration;
     }
 
-    private static Random random = new Random();
-
     private static string RandomString(int length)
     {
+        Random random = new Random();
         const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
         return new string(Enumerable.Repeat(chars, length)
             .Select(s => s[random.Next(s.Length)]).ToArray());
     }
 
-    public void GenerateClaimCodeForUserAndNumber(string username, string phoneNumber)
+    public async void GenerateClaimCodeForUserAndNumber(string username, string phoneNumber)
     {
         var generatedCode = string.Empty;
         if (IsCodeGeneratedForUser(username))
@@ -32,7 +33,10 @@ public class PhoneClaimCodeProviderService
             _phoneClaimNumbers[username] = phoneNumber;
         }
 
-        SignalIntegration.Instance.SendMessageToUserAsync("Your phone number validation code is: " + generatedCode, phoneNumber);
+        if (_signalIntegration != null)
+        {
+            await _signalIntegration.SendMessageToUserAsync("Your phone number validation code is: " + generatedCode, phoneNumber);
+        }
     }
 
     public string ValidateClaimCodeForUser(string code, string username)

song_of_the_day/Config/AppConfiguration.cs

@@ -20,6 +20,8 @@ public class AppConfiguration
         var managersGroupName = Environment.GetEnvironmentVariable("LDAP_ADMINGROUP") ?? "admins";
         var userGroupName = Environment.GetEnvironmentVariable("LDAP_USERGROUP") ?? "everybody";
         var bindValue = Environment.GetEnvironmentVariable("LDAP_BIND");
+        this.SpotifyClientId = Environment.GetEnvironmentVariable("SPOTIFY_CLIENT_ID") ?? "0c59b625470b4ad1b70743e0254d17fd";
+        this.SpotifyClientSecret = Environment.GetEnvironmentVariable("SPOTIFY_CLIENT_SECRET") ?? "04daaebd42fc47909c5cbd1f5cf23555";
         this.LDAPConfig = new ConfigurationAD()
         {
             Username = Environment.GetEnvironmentVariable("LDAP_BIND") ?? "cn=admin,dc=disi,dc=dev",
@@ -31,6 +33,13 @@ public class AppConfiguration
             CrewGroup = $"cn={userGroupName},ou=groups,dc=disi,dc=dev",
             ManagerGroup = $"cn={managersGroupName},ou=groups,dc=disi,dc=dev"
         };
+
+        this.UserCheckTimerSchedule = Environment.GetEnvironmentVariable("USER_CHECK_TIMER_SCHEDULE") ?? "*/1 * * * *";
+        this.LikePlaylistCheckTimerSchedule = Environment.GetEnvironmentVariable("LIKE_PLAYLIST_CHECK_TIMER_SCHEDULE") ?? "*/10 * * * *";
+        this.UserIntroCheckTimerSchedule = Environment.GetEnvironmentVariable("USER_INTRO_TIMER_SCHEDULE") ?? "*/1 * * * *";
+        this.PickOfTheDayCheckTimerSchedule = Environment.GetEnvironmentVariable("PICK_OF_THE_DAY_TIMER_SCHEDULE") ?? "0 8 * * *";
+        this.LdapAssociationTimerSchedule = Environment.GetEnvironmentVariable("LDAP_ASSOCIATION_TIMER_SCHEDULE") ?? "*/10 * * * *";
+        this.MessageSyncTimerSchedule = Environment.GetEnvironmentVariable("MESSAGE_SYNC_TIMER_SCHEDULE") ?? "*/10 * * * *";
     }
 
     public string SignalAPIEndpointUri
@@ -83,6 +92,16 @@ public class AppConfiguration
         get; private set;
     }
 
+    public string SpotifyClientId
+    {
+        get; private set;
+    }
+
+    public string SpotifyClientSecret
+    {
+        get; private set;
+    }
+
     public bool UseBotTag
     {
         get; private set;
@@ -97,4 +116,34 @@ public class AppConfiguration
     {
         get; private set;
     }
+
+    public string UserCheckTimerSchedule
+    {
+        get; private set;
+    }
+
+    public string LikePlaylistCheckTimerSchedule
+    {
+        get; private set;
+    }
+
+    public string UserIntroCheckTimerSchedule
+    {
+        get; private set;
+    }
+
+    public string PickOfTheDayCheckTimerSchedule
+    {
+        get; private set;
+    }
+
+    public string LdapAssociationTimerSchedule
+    {
+        get; private set;
+    }
+
+    public string MessageSyncTimerSchedule
+    {
+        get; private set;
+    }
 }

song_of_the_day/Controllers/AuthController.cs

@@ -10,7 +10,7 @@ public class AuthController : Controller
     public async Task<IActionResult> Login(string username, string password)
     {
         var ldapService = HttpContext.RequestServices.GetService<LdapAuthenticationService>();
-        if (ldapService.Authenticate(username, password))
+        if (ldapService != null && ldapService.Authenticate(username, password))
         {
             var claims = new[] { new Claim(ClaimTypes.Name, username) };
             var identity = new ClaimsIdentity(claims, CookieAuthenticationDefaults.AuthenticationScheme);

song_of_the_day/Data/DataContext.cs

@@ -12,9 +12,23 @@ public class DataContext : DbContext
     public DbSet<Song>? Songs { get; set; }
     public DbSet<SongSuggestion>? SongSuggestions { get; set; }
     public DbSet<SuggestionHelper>? SuggestionHelpers { get; set; }
+    public DbSet<SmartPlaylistDefinition>? SmartPlaylistDefinitions { get; set; }
 
     protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
         => optionsBuilder.UseNpgsql($"Host={AppConfiguration.Instance.DatabaseUri}:{AppConfiguration.Instance.DatabasePort};"
                                     + $"Username={AppConfiguration.Instance.DatabaseUser};Password={AppConfiguration.Instance.DatabasePW};"
                                     + $"Database={AppConfiguration.Instance.DatabaseName}");
+
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        // configures one-to-many relationship
+        modelBuilder.Entity<User>()
+                .HasMany(u => u.LikedSongs)
+                .WithMany(s => s.LikedBy)
+                .UsingEntity(
+                    "LikedSongs",
+                    r => r.HasOne(typeof(Song)).WithMany().HasForeignKey("SongId").HasPrincipalKey(nameof(Song.SongId)),
+                    l => l.HasOne(typeof(User)).WithMany().HasForeignKey("UserId").HasPrincipalKey(nameof(User.UserId)),
+                    j => j.HasKey("SongId", "UserId"));   
+    }
 }

song_of_the_day/Data/Migrations/20250601144913_some more model updates.Designer.cs

@@ -0,0 +1,170 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace song_of_the_day.DataMigrations
+{
+    [DbContext(typeof(DataContext))]
+    [Migration("20250601144913_some more model updates")]
+    partial class somemoremodelupdates
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.3")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("Song", b =>
+                {
+                    b.Property<int>("SongId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("SongId"));
+
+                    b.Property<string>("Artist")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("Provider")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotifyId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Url")
+                        .HasColumnType("text");
+
+                    b.HasKey("SongId");
+
+                    b.ToTable("Songs");
+                });
+
+            modelBuilder.Entity("SongSuggestion", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("HasUsedSuggestion")
+                        .HasColumnType("boolean");
+
+                    b.Property<int?>("SongId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("SuggestionHelperId")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("UserHasSubmitted")
+                        .HasColumnType("boolean");
+
+                    b.Property<int?>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SongId");
+
+                    b.HasIndex("SuggestionHelperId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("SongSuggestions");
+                });
+
+            modelBuilder.Entity("SuggestionHelper", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("SuggestionHelpers");
+                });
+
+            modelBuilder.Entity("User", b =>
+                {
+                    b.Property<int>("UserId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("UserId"));
+
+                    b.Property<bool>("AssociationInProgress")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsIntroduced")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("LdapUserName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<string>("NickName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("SignalMemberId")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("WasChosenForSuggestionThisRound")
+                        .HasColumnType("boolean");
+
+                    b.HasKey("UserId");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("SongSuggestion", b =>
+                {
+                    b.HasOne("Song", "Song")
+                        .WithMany()
+                        .HasForeignKey("SongId");
+
+                    b.HasOne("SuggestionHelper", "SuggestionHelper")
+                        .WithMany()
+                        .HasForeignKey("SuggestionHelperId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId");
+
+                    b.Navigation("Song");
+
+                    b.Navigation("SuggestionHelper");
+
+                    b.Navigation("User");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

song_of_the_day/Data/Migrations/20250601144913_some more model updates.cs

@@ -0,0 +1,38 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace song_of_the_day.DataMigrations
+{
+    /// <inheritdoc />
+    public partial class somemoremodelupdates : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<int>(
+                name: "Provider",
+                table: "Songs",
+                type: "integer",
+                nullable: true);
+
+            migrationBuilder.AddColumn<string>(
+                name: "SpotifyId",
+                table: "Songs",
+                type: "text",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "Provider",
+                table: "Songs");
+
+            migrationBuilder.DropColumn(
+                name: "SpotifyId",
+                table: "Songs");
+        }
+    }
+}

song_of_the_day/Data/Migrations/20250719185147_adding song likes and playlists.Designer.cs

@@ -0,0 +1,268 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace song_of_the_day.DataMigrations
+{
+    [DbContext(typeof(DataContext))]
+    [Migration("20250719185147_adding song likes and playlists")]
+    partial class addingsonglikesandplaylists
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.3")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int?>("CreatedByUserId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IncludesLikedSongs")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IncludesUnCategorizedSongs")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("SpotifyPlaylistId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CreatedByUserId");
+
+                    b.ToTable("SmartPlaylistDefinitions");
+                });
+
+            modelBuilder.Entity("Song", b =>
+                {
+                    b.Property<int>("SongId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("SongId"));
+
+                    b.Property<string>("Artist")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("Provider")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId1")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotifyId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Url")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("SongId");
+
+                    b.HasIndex("SmartPlaylistDefinitionId");
+
+                    b.HasIndex("SmartPlaylistDefinitionId1");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Songs");
+                });
+
+            modelBuilder.Entity("SongSuggestion", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("HasUsedSuggestion")
+                        .HasColumnType("boolean");
+
+                    b.Property<int?>("SongId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("SuggestionHelperId")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("UserHasSubmitted")
+                        .HasColumnType("boolean");
+
+                    b.Property<int?>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SongId");
+
+                    b.HasIndex("SuggestionHelperId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("SongSuggestions");
+                });
+
+            modelBuilder.Entity("SuggestionHelper", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SmartPlaylistDefinitionId");
+
+                    b.ToTable("SuggestionHelpers");
+                });
+
+            modelBuilder.Entity("User", b =>
+                {
+                    b.Property<int>("UserId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("UserId"));
+
+                    b.Property<bool>("AssociationInProgress")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsIntroduced")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("LdapUserName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<string>("NickName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("SignalMemberId")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("WasChosenForSuggestionThisRound")
+                        .HasColumnType("boolean");
+
+                    b.HasKey("UserId");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.HasOne("User", "CreatedBy")
+                        .WithMany()
+                        .HasForeignKey("CreatedByUserId");
+
+                    b.Navigation("CreatedBy");
+                });
+
+            modelBuilder.Entity("Song", b =>
+                {
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("ExplicitlyExcludedSongs")
+                        .HasForeignKey("SmartPlaylistDefinitionId");
+
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("ExplicitlyIncludedSongs")
+                        .HasForeignKey("SmartPlaylistDefinitionId1");
+
+                    b.HasOne("User", null)
+                        .WithMany("LikedSongs")
+                        .HasForeignKey("UserId");
+                });
+
+            modelBuilder.Entity("SongSuggestion", b =>
+                {
+                    b.HasOne("Song", "Song")
+                        .WithMany()
+                        .HasForeignKey("SongId");
+
+                    b.HasOne("SuggestionHelper", "SuggestionHelper")
+                        .WithMany()
+                        .HasForeignKey("SuggestionHelperId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId");
+
+                    b.Navigation("Song");
+
+                    b.Navigation("SuggestionHelper");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("SuggestionHelper", b =>
+                {
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("Categories")
+                        .HasForeignKey("SmartPlaylistDefinitionId");
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.Navigation("Categories");
+
+                    b.Navigation("ExplicitlyExcludedSongs");
+
+                    b.Navigation("ExplicitlyIncludedSongs");
+                });
+
+            modelBuilder.Entity("User", b =>
+                {
+                    b.Navigation("LikedSongs");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

song_of_the_day/Data/Migrations/20250719185147_adding song likes and playlists.cs

@@ -0,0 +1,170 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace song_of_the_day.DataMigrations
+{
+    /// <inheritdoc />
+    public partial class addingsonglikesandplaylists : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<int>(
+                name: "SmartPlaylistDefinitionId",
+                table: "SuggestionHelpers",
+                type: "integer",
+                nullable: true);
+
+            migrationBuilder.AddColumn<int>(
+                name: "SmartPlaylistDefinitionId",
+                table: "Songs",
+                type: "integer",
+                nullable: true);
+
+            migrationBuilder.AddColumn<int>(
+                name: "SmartPlaylistDefinitionId1",
+                table: "Songs",
+                type: "integer",
+                nullable: true);
+
+            migrationBuilder.AddColumn<int>(
+                name: "UserId",
+                table: "Songs",
+                type: "integer",
+                nullable: true);
+
+            migrationBuilder.CreateTable(
+                name: "SmartPlaylistDefinitions",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Title = table.Column<string>(type: "text", nullable: true),
+                    Description = table.Column<string>(type: "text", nullable: true),
+                    CreatedByUserId = table.Column<int>(type: "integer", nullable: true),
+                    IncludesUnCategorizedSongs = table.Column<bool>(type: "boolean", nullable: false),
+                    IncludesLikedSongs = table.Column<bool>(type: "boolean", nullable: false),
+                    SpotifyPlaylistId = table.Column<string>(type: "text", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_SmartPlaylistDefinitions", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_SmartPlaylistDefinitions_Users_CreatedByUserId",
+                        column: x => x.CreatedByUserId,
+                        principalTable: "Users",
+                        principalColumn: "UserId");
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_SuggestionHelpers_SmartPlaylistDefinitionId",
+                table: "SuggestionHelpers",
+                column: "SmartPlaylistDefinitionId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Songs_SmartPlaylistDefinitionId",
+                table: "Songs",
+                column: "SmartPlaylistDefinitionId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Songs_SmartPlaylistDefinitionId1",
+                table: "Songs",
+                column: "SmartPlaylistDefinitionId1");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Songs_UserId",
+                table: "Songs",
+                column: "UserId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_SmartPlaylistDefinitions_CreatedByUserId",
+                table: "SmartPlaylistDefinitions",
+                column: "CreatedByUserId");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Songs_SmartPlaylistDefinitions_SmartPlaylistDefinitionId",
+                table: "Songs",
+                column: "SmartPlaylistDefinitionId",
+                principalTable: "SmartPlaylistDefinitions",
+                principalColumn: "Id");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Songs_SmartPlaylistDefinitions_SmartPlaylistDefinitionId1",
+                table: "Songs",
+                column: "SmartPlaylistDefinitionId1",
+                principalTable: "SmartPlaylistDefinitions",
+                principalColumn: "Id");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Songs_Users_UserId",
+                table: "Songs",
+                column: "UserId",
+                principalTable: "Users",
+                principalColumn: "UserId");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_SuggestionHelpers_SmartPlaylistDefinitions_SmartPlaylistDef~",
+                table: "SuggestionHelpers",
+                column: "SmartPlaylistDefinitionId",
+                principalTable: "SmartPlaylistDefinitions",
+                principalColumn: "Id");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Songs_SmartPlaylistDefinitions_SmartPlaylistDefinitionId",
+                table: "Songs");
+
+            migrationBuilder.DropForeignKey(
+                name: "FK_Songs_SmartPlaylistDefinitions_SmartPlaylistDefinitionId1",
+                table: "Songs");
+
+            migrationBuilder.DropForeignKey(
+                name: "FK_Songs_Users_UserId",
+                table: "Songs");
+
+            migrationBuilder.DropForeignKey(
+                name: "FK_SuggestionHelpers_SmartPlaylistDefinitions_SmartPlaylistDef~",
+                table: "SuggestionHelpers");
+
+            migrationBuilder.DropTable(
+                name: "SmartPlaylistDefinitions");
+
+            migrationBuilder.DropIndex(
+                name: "IX_SuggestionHelpers_SmartPlaylistDefinitionId",
+                table: "SuggestionHelpers");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Songs_SmartPlaylistDefinitionId",
+                table: "Songs");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Songs_SmartPlaylistDefinitionId1",
+                table: "Songs");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Songs_UserId",
+                table: "Songs");
+
+            migrationBuilder.DropColumn(
+                name: "SmartPlaylistDefinitionId",
+                table: "SuggestionHelpers");
+
+            migrationBuilder.DropColumn(
+                name: "SmartPlaylistDefinitionId",
+                table: "Songs");
+
+            migrationBuilder.DropColumn(
+                name: "SmartPlaylistDefinitionId1",
+                table: "Songs");
+
+            migrationBuilder.DropColumn(
+                name: "UserId",
+                table: "Songs");
+        }
+    }
+}

song_of_the_day/Data/Migrations/20250719222759_fix issues with Spotify session data for users.Designer.cs

@@ -0,0 +1,282 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace song_of_the_day.DataMigrations
+{
+    [DbContext(typeof(DataContext))]
+    [Migration("20250719222759_fix issues with Spotify session data for users")]
+    partial class fixissueswithSpotifysessiondataforusers
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.3")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int?>("CreatedByUserId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IncludesLikedSongs")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IncludesUnCategorizedSongs")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("SpotifyPlaylistId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CreatedByUserId");
+
+                    b.ToTable("SmartPlaylistDefinitions");
+                });
+
+            modelBuilder.Entity("Song", b =>
+                {
+                    b.Property<int>("SongId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("SongId"));
+
+                    b.Property<string>("Artist")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("Provider")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId1")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotifyId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Url")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("SongId");
+
+                    b.HasIndex("SmartPlaylistDefinitionId");
+
+                    b.HasIndex("SmartPlaylistDefinitionId1");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Songs");
+                });
+
+            modelBuilder.Entity("SongSuggestion", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("HasUsedSuggestion")
+                        .HasColumnType("boolean");
+
+                    b.Property<int?>("SongId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("SuggestionHelperId")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("UserHasSubmitted")
+                        .HasColumnType("boolean");
+
+                    b.Property<int?>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SongId");
+
+                    b.HasIndex("SuggestionHelperId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("SongSuggestions");
+                });
+
+            modelBuilder.Entity("SuggestionHelper", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SmartPlaylistDefinitionId");
+
+                    b.ToTable("SuggestionHelpers");
+                });
+
+            modelBuilder.Entity("User", b =>
+                {
+                    b.Property<int>("UserId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("UserId"));
+
+                    b.Property<bool>("AssociationInProgress")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsIntroduced")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("LdapUserName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<string>("NickName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("SignalMemberId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("SpotiyAuthAccessToken")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("SpotiyAuthCreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("SpotiyAuthExpiresAfterSeconds")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotiyAuthRefreshToken")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<bool>("WasChosenForSuggestionThisRound")
+                        .HasColumnType("boolean");
+
+                    b.HasKey("UserId");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.HasOne("User", "CreatedBy")
+                        .WithMany()
+                        .HasForeignKey("CreatedByUserId");
+
+                    b.Navigation("CreatedBy");
+                });
+
+            modelBuilder.Entity("Song", b =>
+                {
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("ExplicitlyExcludedSongs")
+                        .HasForeignKey("SmartPlaylistDefinitionId");
+
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("ExplicitlyIncludedSongs")
+                        .HasForeignKey("SmartPlaylistDefinitionId1");
+
+                    b.HasOne("User", null)
+                        .WithMany("LikedSongs")
+                        .HasForeignKey("UserId");
+                });
+
+            modelBuilder.Entity("SongSuggestion", b =>
+                {
+                    b.HasOne("Song", "Song")
+                        .WithMany()
+                        .HasForeignKey("SongId");
+
+                    b.HasOne("SuggestionHelper", "SuggestionHelper")
+                        .WithMany()
+                        .HasForeignKey("SuggestionHelperId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId");
+
+                    b.Navigation("Song");
+
+                    b.Navigation("SuggestionHelper");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("SuggestionHelper", b =>
+                {
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("Categories")
+                        .HasForeignKey("SmartPlaylistDefinitionId");
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.Navigation("Categories");
+
+                    b.Navigation("ExplicitlyExcludedSongs");
+
+                    b.Navigation("ExplicitlyIncludedSongs");
+                });
+
+            modelBuilder.Entity("User", b =>
+                {
+                    b.Navigation("LikedSongs");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

song_of_the_day/Data/Migrations/20250719222759_fix issues with Spotify session data for users.cs

@@ -0,0 +1,63 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace song_of_the_day.DataMigrations
+{
+    /// <inheritdoc />
+    public partial class fixissueswithSpotifysessiondataforusers : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "SpotiyAuthAccessToken",
+                table: "Users",
+                type: "text",
+                nullable: false,
+                defaultValue: "");
+
+            migrationBuilder.AddColumn<DateTime>(
+                name: "SpotiyAuthCreatedAt",
+                table: "Users",
+                type: "timestamp with time zone",
+                nullable: false,
+                defaultValue: new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified));
+
+            migrationBuilder.AddColumn<int>(
+                name: "SpotiyAuthExpiresAfterSeconds",
+                table: "Users",
+                type: "integer",
+                nullable: false,
+                defaultValue: 0);
+
+            migrationBuilder.AddColumn<string>(
+                name: "SpotiyAuthRefreshToken",
+                table: "Users",
+                type: "text",
+                nullable: false,
+                defaultValue: "");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "SpotiyAuthAccessToken",
+                table: "Users");
+
+            migrationBuilder.DropColumn(
+                name: "SpotiyAuthCreatedAt",
+                table: "Users");
+
+            migrationBuilder.DropColumn(
+                name: "SpotiyAuthExpiresAfterSeconds",
+                table: "Users");
+
+            migrationBuilder.DropColumn(
+                name: "SpotiyAuthRefreshToken",
+                table: "Users");
+        }
+    }
+}

song_of_the_day/Data/Migrations/20250719230009_some more fixes.Designer.cs

@@ -0,0 +1,282 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace song_of_the_day.DataMigrations
+{
+    [DbContext(typeof(DataContext))]
+    [Migration("20250719230009_some more fixes")]
+    partial class somemorefixes
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.3")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int?>("CreatedByUserId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IncludesLikedSongs")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IncludesUnCategorizedSongs")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("SpotifyPlaylistId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CreatedByUserId");
+
+                    b.ToTable("SmartPlaylistDefinitions");
+                });
+
+            modelBuilder.Entity("Song", b =>
+                {
+                    b.Property<int>("SongId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("SongId"));
+
+                    b.Property<string>("Artist")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("Provider")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId1")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotifyId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Url")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("SongId");
+
+                    b.HasIndex("SmartPlaylistDefinitionId");
+
+                    b.HasIndex("SmartPlaylistDefinitionId1");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Songs");
+                });
+
+            modelBuilder.Entity("SongSuggestion", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("HasUsedSuggestion")
+                        .HasColumnType("boolean");
+
+                    b.Property<int?>("SongId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("SuggestionHelperId")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("UserHasSubmitted")
+                        .HasColumnType("boolean");
+
+                    b.Property<int?>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SongId");
+
+                    b.HasIndex("SuggestionHelperId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("SongSuggestions");
+                });
+
+            modelBuilder.Entity("SuggestionHelper", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SmartPlaylistDefinitionId");
+
+                    b.ToTable("SuggestionHelpers");
+                });
+
+            modelBuilder.Entity("User", b =>
+                {
+                    b.Property<int>("UserId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("UserId"));
+
+                    b.Property<bool>("AssociationInProgress")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsIntroduced")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("LdapUserName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<string>("NickName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("SignalMemberId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("SpotifyAuthAccessToken")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("SpotifyAuthCreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("SpotifyAuthExpiresAfterSeconds")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotifyAuthRefreshToken")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<bool>("WasChosenForSuggestionThisRound")
+                        .HasColumnType("boolean");
+
+                    b.HasKey("UserId");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.HasOne("User", "CreatedBy")
+                        .WithMany()
+                        .HasForeignKey("CreatedByUserId");
+
+                    b.Navigation("CreatedBy");
+                });
+
+            modelBuilder.Entity("Song", b =>
+                {
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("ExplicitlyExcludedSongs")
+                        .HasForeignKey("SmartPlaylistDefinitionId");
+
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("ExplicitlyIncludedSongs")
+                        .HasForeignKey("SmartPlaylistDefinitionId1");
+
+                    b.HasOne("User", null)
+                        .WithMany("LikedSongs")
+                        .HasForeignKey("UserId");
+                });
+
+            modelBuilder.Entity("SongSuggestion", b =>
+                {
+                    b.HasOne("Song", "Song")
+                        .WithMany()
+                        .HasForeignKey("SongId");
+
+                    b.HasOne("SuggestionHelper", "SuggestionHelper")
+                        .WithMany()
+                        .HasForeignKey("SuggestionHelperId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId");
+
+                    b.Navigation("Song");
+
+                    b.Navigation("SuggestionHelper");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("SuggestionHelper", b =>
+                {
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("Categories")
+                        .HasForeignKey("SmartPlaylistDefinitionId");
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.Navigation("Categories");
+
+                    b.Navigation("ExplicitlyExcludedSongs");
+
+                    b.Navigation("ExplicitlyIncludedSongs");
+                });
+
+            modelBuilder.Entity("User", b =>
+                {
+                    b.Navigation("LikedSongs");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

song_of_the_day/Data/Migrations/20250719230009_some more fixes.cs

@@ -0,0 +1,58 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace song_of_the_day.DataMigrations
+{
+    /// <inheritdoc />
+    public partial class somemorefixes : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.RenameColumn(
+                name: "SpotiyAuthRefreshToken",
+                table: "Users",
+                newName: "SpotifyAuthRefreshToken");
+
+            migrationBuilder.RenameColumn(
+                name: "SpotiyAuthExpiresAfterSeconds",
+                table: "Users",
+                newName: "SpotifyAuthExpiresAfterSeconds");
+
+            migrationBuilder.RenameColumn(
+                name: "SpotiyAuthCreatedAt",
+                table: "Users",
+                newName: "SpotifyAuthCreatedAt");
+
+            migrationBuilder.RenameColumn(
+                name: "SpotiyAuthAccessToken",
+                table: "Users",
+                newName: "SpotifyAuthAccessToken");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.RenameColumn(
+                name: "SpotifyAuthRefreshToken",
+                table: "Users",
+                newName: "SpotiyAuthRefreshToken");
+
+            migrationBuilder.RenameColumn(
+                name: "SpotifyAuthExpiresAfterSeconds",
+                table: "Users",
+                newName: "SpotiyAuthExpiresAfterSeconds");
+
+            migrationBuilder.RenameColumn(
+                name: "SpotifyAuthCreatedAt",
+                table: "Users",
+                newName: "SpotiyAuthCreatedAt");
+
+            migrationBuilder.RenameColumn(
+                name: "SpotifyAuthAccessToken",
+                table: "Users",
+                newName: "SpotiyAuthAccessToken");
+        }
+    }
+}

song_of_the_day/Data/Migrations/20250719233912_explicitly specify keys.Designer.cs

@@ -0,0 +1,282 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace song_of_the_day.DataMigrations
+{
+    [DbContext(typeof(DataContext))]
+    [Migration("20250719233912_explicitly specify keys")]
+    partial class explicitlyspecifykeys
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.3")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int?>("CreatedByUserId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IncludesLikedSongs")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IncludesUnCategorizedSongs")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("SpotifyPlaylistId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CreatedByUserId");
+
+                    b.ToTable("SmartPlaylistDefinitions");
+                });
+
+            modelBuilder.Entity("Song", b =>
+                {
+                    b.Property<int>("SongId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("SongId"));
+
+                    b.Property<string>("Artist")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("Provider")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId1")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotifyId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Url")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("SongId");
+
+                    b.HasIndex("SmartPlaylistDefinitionId");
+
+                    b.HasIndex("SmartPlaylistDefinitionId1");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Songs");
+                });
+
+            modelBuilder.Entity("SongSuggestion", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("HasUsedSuggestion")
+                        .HasColumnType("boolean");
+
+                    b.Property<int?>("SongId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("SuggestionHelperId")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("UserHasSubmitted")
+                        .HasColumnType("boolean");
+
+                    b.Property<int?>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SongId");
+
+                    b.HasIndex("SuggestionHelperId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("SongSuggestions");
+                });
+
+            modelBuilder.Entity("SuggestionHelper", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SmartPlaylistDefinitionId");
+
+                    b.ToTable("SuggestionHelpers");
+                });
+
+            modelBuilder.Entity("User", b =>
+                {
+                    b.Property<int>("UserId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("UserId"));
+
+                    b.Property<bool>("AssociationInProgress")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsIntroduced")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("LdapUserName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<string>("NickName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("SignalMemberId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("SpotifyAuthAccessToken")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("SpotifyAuthCreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("SpotifyAuthExpiresAfterSeconds")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotifyAuthRefreshToken")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<bool>("WasChosenForSuggestionThisRound")
+                        .HasColumnType("boolean");
+
+                    b.HasKey("UserId");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.HasOne("User", "CreatedBy")
+                        .WithMany()
+                        .HasForeignKey("CreatedByUserId");
+
+                    b.Navigation("CreatedBy");
+                });
+
+            modelBuilder.Entity("Song", b =>
+                {
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("ExplicitlyExcludedSongs")
+                        .HasForeignKey("SmartPlaylistDefinitionId");
+
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("ExplicitlyIncludedSongs")
+                        .HasForeignKey("SmartPlaylistDefinitionId1");
+
+                    b.HasOne("User", null)
+                        .WithMany("LikedSongs")
+                        .HasForeignKey("UserId");
+                });
+
+            modelBuilder.Entity("SongSuggestion", b =>
+                {
+                    b.HasOne("Song", "Song")
+                        .WithMany()
+                        .HasForeignKey("SongId");
+
+                    b.HasOne("SuggestionHelper", "SuggestionHelper")
+                        .WithMany()
+                        .HasForeignKey("SuggestionHelperId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId");
+
+                    b.Navigation("Song");
+
+                    b.Navigation("SuggestionHelper");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("SuggestionHelper", b =>
+                {
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("Categories")
+                        .HasForeignKey("SmartPlaylistDefinitionId");
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.Navigation("Categories");
+
+                    b.Navigation("ExplicitlyExcludedSongs");
+
+                    b.Navigation("ExplicitlyIncludedSongs");
+                });
+
+            modelBuilder.Entity("User", b =>
+                {
+                    b.Navigation("LikedSongs");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

song_of_the_day/Data/Migrations/20250719233912_explicitly specify keys.cs

@@ -0,0 +1,22 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace song_of_the_day.DataMigrations
+{
+    /// <inheritdoc />
+    public partial class explicitlyspecifykeys : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+
+        }
+    }
+}

song_of_the_day/Data/Migrations/20250720003809_fix auth token non-null contraint.Designer.cs

@@ -0,0 +1,280 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace song_of_the_day.DataMigrations
+{
+    [DbContext(typeof(DataContext))]
+    [Migration("20250720003809_fix auth token non-null contraint")]
+    partial class fixauthtokennonnullcontraint
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.3")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int?>("CreatedByUserId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IncludesLikedSongs")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IncludesUnCategorizedSongs")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("SpotifyPlaylistId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CreatedByUserId");
+
+                    b.ToTable("SmartPlaylistDefinitions");
+                });
+
+            modelBuilder.Entity("Song", b =>
+                {
+                    b.Property<int>("SongId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("SongId"));
+
+                    b.Property<string>("Artist")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("Provider")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId1")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotifyId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Url")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("SongId");
+
+                    b.HasIndex("SmartPlaylistDefinitionId");
+
+                    b.HasIndex("SmartPlaylistDefinitionId1");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("Songs");
+                });
+
+            modelBuilder.Entity("SongSuggestion", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("HasUsedSuggestion")
+                        .HasColumnType("boolean");
+
+                    b.Property<int?>("SongId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("SuggestionHelperId")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("UserHasSubmitted")
+                        .HasColumnType("boolean");
+
+                    b.Property<int?>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SongId");
+
+                    b.HasIndex("SuggestionHelperId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("SongSuggestions");
+                });
+
+            modelBuilder.Entity("SuggestionHelper", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SmartPlaylistDefinitionId");
+
+                    b.ToTable("SuggestionHelpers");
+                });
+
+            modelBuilder.Entity("User", b =>
+                {
+                    b.Property<int>("UserId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("UserId"));
+
+                    b.Property<bool>("AssociationInProgress")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsIntroduced")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("LdapUserName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<string>("NickName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("SignalMemberId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("SpotifyAuthAccessToken")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime?>("SpotifyAuthCreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int?>("SpotifyAuthExpiresAfterSeconds")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotifyAuthRefreshToken")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("WasChosenForSuggestionThisRound")
+                        .HasColumnType("boolean");
+
+                    b.HasKey("UserId");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.HasOne("User", "CreatedBy")
+                        .WithMany()
+                        .HasForeignKey("CreatedByUserId");
+
+                    b.Navigation("CreatedBy");
+                });
+
+            modelBuilder.Entity("Song", b =>
+                {
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("ExplicitlyExcludedSongs")
+                        .HasForeignKey("SmartPlaylistDefinitionId");
+
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("ExplicitlyIncludedSongs")
+                        .HasForeignKey("SmartPlaylistDefinitionId1");
+
+                    b.HasOne("User", null)
+                        .WithMany("LikedSongs")
+                        .HasForeignKey("UserId");
+                });
+
+            modelBuilder.Entity("SongSuggestion", b =>
+                {
+                    b.HasOne("Song", "Song")
+                        .WithMany()
+                        .HasForeignKey("SongId");
+
+                    b.HasOne("SuggestionHelper", "SuggestionHelper")
+                        .WithMany()
+                        .HasForeignKey("SuggestionHelperId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId");
+
+                    b.Navigation("Song");
+
+                    b.Navigation("SuggestionHelper");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("SuggestionHelper", b =>
+                {
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("Categories")
+                        .HasForeignKey("SmartPlaylistDefinitionId");
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.Navigation("Categories");
+
+                    b.Navigation("ExplicitlyExcludedSongs");
+
+                    b.Navigation("ExplicitlyIncludedSongs");
+                });
+
+            modelBuilder.Entity("User", b =>
+                {
+                    b.Navigation("LikedSongs");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

song_of_the_day/Data/Migrations/20250720003809_fix auth token non-null contraint.cs

@@ -0,0 +1,91 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace song_of_the_day.DataMigrations
+{
+    /// <inheritdoc />
+    public partial class fixauthtokennonnullcontraint : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "SpotifyAuthRefreshToken",
+                table: "Users",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "SpotifyAuthExpiresAfterSeconds",
+                table: "Users",
+                type: "integer",
+                nullable: true,
+                oldClrType: typeof(int),
+                oldType: "integer");
+
+            migrationBuilder.AlterColumn<DateTime>(
+                name: "SpotifyAuthCreatedAt",
+                table: "Users",
+                type: "timestamp with time zone",
+                nullable: true,
+                oldClrType: typeof(DateTime),
+                oldType: "timestamp with time zone");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "SpotifyAuthAccessToken",
+                table: "Users",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<string>(
+                name: "SpotifyAuthRefreshToken",
+                table: "Users",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<int>(
+                name: "SpotifyAuthExpiresAfterSeconds",
+                table: "Users",
+                type: "integer",
+                nullable: false,
+                defaultValue: 0,
+                oldClrType: typeof(int),
+                oldType: "integer",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<DateTime>(
+                name: "SpotifyAuthCreatedAt",
+                table: "Users",
+                type: "timestamp with time zone",
+                nullable: false,
+                defaultValue: new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified),
+                oldClrType: typeof(DateTime),
+                oldType: "timestamp with time zone",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "SpotifyAuthAccessToken",
+                table: "Users",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+        }
+    }
+}

song_of_the_day/Data/Migrations/20250720144512_explicitly model liked songs relationship.Designer.cs

@@ -0,0 +1,296 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace song_of_the_day.DataMigrations
+{
+    [DbContext(typeof(DataContext))]
+    [Migration("20250720144512_explicitly model liked songs relationship")]
+    partial class explicitlymodellikedsongsrelationship
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "9.0.3")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("LikedSongs", b =>
+                {
+                    b.Property<int>("SongId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("SongId", "UserId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("LikedSongs");
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int?>("CreatedByUserId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IncludesLikedSongs")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IncludesUnCategorizedSongs")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("SpotifyPlaylistId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CreatedByUserId");
+
+                    b.ToTable("SmartPlaylistDefinitions");
+                });
+
+            modelBuilder.Entity("Song", b =>
+                {
+                    b.Property<int>("SongId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("SongId"));
+
+                    b.Property<string>("Artist")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("Provider")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId1")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotifyId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Url")
+                        .HasColumnType("text");
+
+                    b.HasKey("SongId");
+
+                    b.HasIndex("SmartPlaylistDefinitionId");
+
+                    b.HasIndex("SmartPlaylistDefinitionId1");
+
+                    b.ToTable("Songs");
+                });
+
+            modelBuilder.Entity("SongSuggestion", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<bool>("HasUsedSuggestion")
+                        .HasColumnType("boolean");
+
+                    b.Property<int?>("SongId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("SuggestionHelperId")
+                        .HasColumnType("integer");
+
+                    b.Property<bool>("UserHasSubmitted")
+                        .HasColumnType("boolean");
+
+                    b.Property<int?>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SongId");
+
+                    b.HasIndex("SuggestionHelperId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("SongSuggestions");
+                });
+
+            modelBuilder.Entity("SuggestionHelper", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SmartPlaylistDefinitionId");
+
+                    b.ToTable("SuggestionHelpers");
+                });
+
+            modelBuilder.Entity("User", b =>
+                {
+                    b.Property<int>("UserId")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("UserId"));
+
+                    b.Property<bool>("AssociationInProgress")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IsIntroduced")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("LdapUserName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.Property<string>("NickName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("SignalMemberId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("SpotifyAuthAccessToken")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime?>("SpotifyAuthCreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int?>("SpotifyAuthExpiresAfterSeconds")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotifyAuthRefreshToken")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("WasChosenForSuggestionThisRound")
+                        .HasColumnType("boolean");
+
+                    b.HasKey("UserId");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("LikedSongs", b =>
+                {
+                    b.HasOne("Song", null)
+                        .WithMany()
+                        .HasForeignKey("SongId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("User", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.HasOne("User", "CreatedBy")
+                        .WithMany()
+                        .HasForeignKey("CreatedByUserId");
+
+                    b.Navigation("CreatedBy");
+                });
+
+            modelBuilder.Entity("Song", b =>
+                {
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("ExplicitlyExcludedSongs")
+                        .HasForeignKey("SmartPlaylistDefinitionId");
+
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("ExplicitlyIncludedSongs")
+                        .HasForeignKey("SmartPlaylistDefinitionId1");
+                });
+
+            modelBuilder.Entity("SongSuggestion", b =>
+                {
+                    b.HasOne("Song", "Song")
+                        .WithMany()
+                        .HasForeignKey("SongId");
+
+                    b.HasOne("SuggestionHelper", "SuggestionHelper")
+                        .WithMany()
+                        .HasForeignKey("SuggestionHelperId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId");
+
+                    b.Navigation("Song");
+
+                    b.Navigation("SuggestionHelper");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("SuggestionHelper", b =>
+                {
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("Categories")
+                        .HasForeignKey("SmartPlaylistDefinitionId");
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.Navigation("Categories");
+
+                    b.Navigation("ExplicitlyExcludedSongs");
+
+                    b.Navigation("ExplicitlyIncludedSongs");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

song_of_the_day/Data/Migrations/20250720144512_explicitly model liked songs relationship.cs

@@ -0,0 +1,80 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace song_of_the_day.DataMigrations
+{
+    /// <inheritdoc />
+    public partial class explicitlymodellikedsongsrelationship : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Songs_Users_UserId",
+                table: "Songs");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Songs_UserId",
+                table: "Songs");
+
+            migrationBuilder.DropColumn(
+                name: "UserId",
+                table: "Songs");
+
+            migrationBuilder.CreateTable(
+                name: "LikedSongs",
+                columns: table => new
+                {
+                    SongId = table.Column<int>(type: "integer", nullable: false),
+                    UserId = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_LikedSongs", x => new { x.SongId, x.UserId });
+                    table.ForeignKey(
+                        name: "FK_LikedSongs_Songs_SongId",
+                        column: x => x.SongId,
+                        principalTable: "Songs",
+                        principalColumn: "SongId",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_LikedSongs_Users_UserId",
+                        column: x => x.UserId,
+                        principalTable: "Users",
+                        principalColumn: "UserId",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_LikedSongs_UserId",
+                table: "LikedSongs",
+                column: "UserId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "LikedSongs");
+
+            migrationBuilder.AddColumn<int>(
+                name: "UserId",
+                table: "Songs",
+                type: "integer",
+                nullable: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Songs_UserId",
+                table: "Songs",
+                column: "UserId");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Songs_Users_UserId",
+                table: "Songs",
+                column: "UserId",
+                principalTable: "Users",
+                principalColumn: "UserId");
+        }
+    }
+}

song_of_the_day/Data/Migrations/DataContextModelSnapshot.cs

@@ -21,6 +21,54 @@ namespace song_of_the_day.DataMigrations
 
             NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
 
+            modelBuilder.Entity("LikedSongs", b =>
+                {
+                    b.Property<int>("SongId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("SongId", "UserId");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("LikedSongs");
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int?>("CreatedByUserId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IncludesLikedSongs")
+                        .HasColumnType("boolean");
+
+                    b.Property<bool>("IncludesUnCategorizedSongs")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("SpotifyPlaylistId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Title")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CreatedByUserId");
+
+                    b.ToTable("SmartPlaylistDefinitions");
+                });
+
             modelBuilder.Entity("Song", b =>
                 {
                     b.Property<int>("SongId")
@@ -35,11 +83,27 @@ namespace song_of_the_day.DataMigrations
                     b.Property<string>("Name")
                         .HasColumnType("text");
 
+                    b.Property<int?>("Provider")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId")
+                        .HasColumnType("integer");
+
+                    b.Property<int?>("SmartPlaylistDefinitionId1")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotifyId")
+                        .HasColumnType("text");
+
                     b.Property<string>("Url")
                         .HasColumnType("text");
 
                     b.HasKey("SongId");
 
+                    b.HasIndex("SmartPlaylistDefinitionId");
+
+                    b.HasIndex("SmartPlaylistDefinitionId1");
+
                     b.ToTable("Songs");
                 });
 
@@ -91,11 +155,16 @@ namespace song_of_the_day.DataMigrations
                     b.Property<string>("Description")
                         .HasColumnType("text");
 
+                    b.Property<int?>("SmartPlaylistDefinitionId")
+                        .HasColumnType("integer");
+
                     b.Property<string>("Title")
                         .HasColumnType("text");
 
                     b.HasKey("Id");
 
+                    b.HasIndex("SmartPlaylistDefinitionId");
+
                     b.ToTable("SuggestionHelpers");
                 });
 
@@ -125,6 +194,18 @@ namespace song_of_the_day.DataMigrations
                     b.Property<string>("SignalMemberId")
                         .HasColumnType("text");
 
+                    b.Property<string>("SpotifyAuthAccessToken")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime?>("SpotifyAuthCreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int?>("SpotifyAuthExpiresAfterSeconds")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotifyAuthRefreshToken")
+                        .HasColumnType("text");
+
                     b.Property<bool>("WasChosenForSuggestionThisRound")
                         .HasColumnType("boolean");
 
@@ -133,6 +214,41 @@ namespace song_of_the_day.DataMigrations
                     b.ToTable("Users");
                 });
 
+            modelBuilder.Entity("LikedSongs", b =>
+                {
+                    b.HasOne("Song", null)
+                        .WithMany()
+                        .HasForeignKey("SongId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("User", null)
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.HasOne("User", "CreatedBy")
+                        .WithMany()
+                        .HasForeignKey("CreatedByUserId");
+
+                    b.Navigation("CreatedBy");
+                });
+
+            modelBuilder.Entity("Song", b =>
+                {
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("ExplicitlyExcludedSongs")
+                        .HasForeignKey("SmartPlaylistDefinitionId");
+
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("ExplicitlyIncludedSongs")
+                        .HasForeignKey("SmartPlaylistDefinitionId1");
+                });
+
             modelBuilder.Entity("SongSuggestion", b =>
                 {
                     b.HasOne("Song", "Song")
@@ -155,6 +271,22 @@ namespace song_of_the_day.DataMigrations
 
                     b.Navigation("User");
                 });
+
+            modelBuilder.Entity("SuggestionHelper", b =>
+                {
+                    b.HasOne("SmartPlaylistDefinition", null)
+                        .WithMany("Categories")
+                        .HasForeignKey("SmartPlaylistDefinitionId");
+                });
+
+            modelBuilder.Entity("SmartPlaylistDefinition", b =>
+                {
+                    b.Navigation("Categories");
+
+                    b.Navigation("ExplicitlyExcludedSongs");
+
+                    b.Navigation("ExplicitlyIncludedSongs");
+                });
 #pragma warning restore 612, 618
         }
     }

song_of_the_day/Data/SmartPlaylistDefinition.cs

@@ -0,0 +1,30 @@
+using Microsoft.EntityFrameworkCore;
+
+[PrimaryKey(nameof(Id))]
+public class SmartPlaylistDefinition
+{
+    public int Id { get; set; }
+    public string? Title { get; set; }
+    public string? Description { get; set; }
+    public User? CreatedBy { get; set; }
+    public bool IncludesUnCategorizedSongs { get; set; }
+    public bool IncludesLikedSongs { get; set; }
+    public List<SuggestionHelper>? Categories { get; set; }
+    public string? SpotifyPlaylistId { get; set; }
+
+    public List<Song>? ExplicitlyIncludedSongs { get; set; }
+    public List<Song>? ExplicitlyExcludedSongs { get; set; }
+
+    public bool IsThisUsersLikedSongsPlaylist
+    {
+        get
+        {
+            return IncludesLikedSongs == true
+                    && IncludesUnCategorizedSongs == false
+                    && (ExplicitlyExcludedSongs == null || ExplicitlyExcludedSongs.Count == 0)
+                    && (ExplicitlyIncludedSongs == null || ExplicitlyIncludedSongs.Count == 0)
+                    && (Categories == null || Categories.Count == 0);
+        }
+    }
+
+}

song_of_the_day/Data/Song.cs

@@ -6,4 +6,8 @@ public class Song
     public string? Name { get; set; }
     public string? Artist { get; set; }
     public string? Url { get; set; }
+    public SongProvider? Provider { get; set; }
+    public string? SpotifyId { get; set; }
+
+    public IList<User> LikedBy { get; set; }
 }

song_of_the_day/Data/SongProvider.cs

@@ -0,0 +1,11 @@
+public enum SongProvider
+{
+    Spotify,
+    YouTube,
+    YoutubeMusic,
+    SoundCloud,
+    Bandcamp,
+    PlainHttp,
+    NavidromeSharedLink,
+    Other
+}

song_of_the_day/Data/User.cs

@@ -10,4 +10,17 @@ public class User
     public bool AssociationInProgress { get; set; }
     public string? LdapUserName { get; set; }
     public bool WasChosenForSuggestionThisRound { get; set; }
+    public string PreferredName
+    {
+        get
+        {
+            return (string.IsNullOrEmpty(NickName) ? Name : NickName).ToString();
+        }
+    }
+    public required List<Song> LikedSongs { get; set; }
+
+    public string? SpotifyAuthAccessToken { get; set; }
+    public int? SpotifyAuthExpiresAfterSeconds { get; set; }
+    public DateTime? SpotifyAuthCreatedAt { get; set; }
+    public string? SpotifyAuthRefreshToken { get; set; }
 }

song_of_the_day/GlobalSuppressions.cs

@@ -0,0 +1,13 @@
+// This file is used by Code Analysis to maintain SuppressMessage
+// attributes that are applied to this project.
+// Project-level suppressions either have no target or are given
+// a specific target and scoped to a namespace, type, member, etc.
+
+using System.Diagnostics.CodeAnalysis;
+
+[assembly: SuppressMessage("Style", "IDE1006:Naming Styles", Justification = "<Pending>", Scope = "member", Target = "~P:sotd.Pages.UnclaimedPhoneNumbersModel.userId")]
+[assembly: SuppressMessage("Style", "IDE1006:Naming Styles", Justification = "<Pending>", Scope = "member", Target = "~P:sotd.Pages.UserModel.userId")]
+[assembly: SuppressMessage("Compiler", "CS8981:The type name only contains lower-cased ascii characters. Such names may become reserved for the language.", Justification = "<Pending>", Scope = "type", Target = "~T:song_of_the_day.DataMigrations.additionaldataforsongsubmissions")]
+[assembly: SuppressMessage("Style", "IDE1006:Naming Styles", Justification = "<Pending>", Scope = "type", Target = "~T:song_of_the_day.DataMigrations.additionaldataforsongsubmissions")]
+[assembly: SuppressMessage("Compiler", "CS8981:The type name only contains lower-cased ascii characters. Such names may become reserved for the language.", Justification = "<Pending>", Scope = "type", Target = "~T:song_of_the_day.DataMigrations.keeptrackofusersoickedforsubmission")]
+[assembly: SuppressMessage("Style", "IDE1006:Naming Styles", Justification = "<Pending>", Scope = "type", Target = "~T:song_of_the_day.DataMigrations.keeptrackofusersoickedforsubmission")]

song_of_the_day/LDAPIntegration/LdapIntegration.cs

@@ -6,8 +6,6 @@ using System.Linq;
 
 public class LdapIntegration
 {
-    public static LdapIntegration? Instance;
-
     private readonly string[] attributesToQuery = new string[]
         {
             "uid",
@@ -16,12 +14,13 @@ public class LdapIntegration
             "mail"
         };
 
-    public LdapIntegration(string uri, int port, string adminBind, string adminPass)
+    public LdapIntegration(ILogger<LdapIntegration> logger)
     {
-        this.Uri = uri;
-        this.Port = port;
-        this.AdminBind = adminBind;
-        this.AdminPass = adminPass;
+        this.Uri = AppConfiguration.Instance.LDAPConfig.LDAPserver;
+        this.Port = AppConfiguration.Instance.LDAPConfig.Port;
+        this.AdminBind = AppConfiguration.Instance.LDAPConfig.Username;
+        this.AdminPass = AppConfiguration.Instance.LDAPConfig.Password;
+        this.logger = logger;
     }
 
     private string Uri { get; set; }
@@ -32,6 +31,8 @@ public class LdapIntegration
 
     private string AdminPass { get; set; }
 
+    private ILogger<LdapIntegration> logger { get; set; }
+
     public bool TestLogin(string username, string password)
     {
         try

song_of_the_day/MessengerIntegration/SignalIntegration.cs

@@ -1,40 +1,61 @@
 
-using System.Collections;
-using System.ComponentModel;
 using song_of_the_day;
 
+public class LinkPreviewAttachment
+{
+    public required string Url { get; set; }
+    public required string Title { get; set; }
+    public required string Description { get; set; }
+    public required string Base64Image { get; set; }
+}
+
 public class SignalIntegration
 {
-    public static SignalIntegration? Instance;
+    private readonly ILogger<SignalIntegration> logger;
 
-    public SignalIntegration(string uri, int port, string phoneNumber)
+    public SignalIntegration(ILogger<SignalIntegration> logger)
     {
+
+        var uri = AppConfiguration.Instance.SignalAPIEndpointUri;
+        var port = int.Parse(AppConfiguration.Instance.SignalAPIEndpointPort);
+        var phoneNumber = AppConfiguration.Instance.HostPhoneNumber;
+        this.logger = logger;
+
         var http = new HttpClient()
         {
-            BaseAddress = new Uri(uri + ":" + port)
+            BaseAddress = new Uri(uri + ":" + port),
+            Timeout = TimeSpan.FromSeconds(180),
         };
-        apiClient = new song_of_the_day.swaggerClient(http);
+        apiClient = new swaggerClient(http);
         apiClient.BaseUrl = "";
         this.phoneNumber = phoneNumber;
     }
 
-    private song_of_the_day.swaggerClient apiClient;
+    private swaggerClient apiClient;
 
     private string phoneNumber;
 
+    public async Task GetMessagesAsync()
+    {
+        var messages = await apiClient.ReceiveAsync(this.phoneNumber, "120", "true", "true", "50", "false");
+        logger.LogInformation($"Received {messages.Count} Signal messages.");
+    }
+
     public async Task ListGroupsAsync()
     {
+        logger.LogDebug("Listing all groups for phone number: {PhoneNumber}", this.phoneNumber);
+
         try
         {
             ICollection<song_of_the_day.GroupEntry> groupEntries = await apiClient.GroupsAllAsync(this.phoneNumber);
             foreach (var group in groupEntries)
             {
-                Console.WriteLine($"{group.Name} {group.Id}");
+                logger.LogDebug($"  {group.Name} {group.Id}");
             }
         }
         catch (Exception ex)
         {
-            Console.WriteLine("Exception (ListGroupsAsync): " + ex.Message);
+            logger.LogError("Exception (ListGroupsAsync): " + ex.Message);
         }
     }
 
@@ -45,14 +66,37 @@ public class SignalIntegration
             SendMessageV2 data = new SendMessageV2();
             data.Recipients = new List<string>();
             data.Recipients.Add(AppConfiguration.Instance.SignalGroupId);
-            data.Message = message;
+            data.Message = (AppConfiguration.Instance.UseBotTag ? "**[Proggy]**\n" : "") + message;
             data.Text_mode = SendMessageV2Text_mode.Styled;
             data.Number = AppConfiguration.Instance.HostPhoneNumber;
             var response = await apiClient.Send2Async(data);
         }
         catch (Exception ex)
         {
-            Console.WriteLine("Exception (SendMessageToGroupAsync): " + ex.Message);
+            logger.LogError("Exception (SendMessageToGroupAsync): " + ex.Message);
+        }
+    }
+
+    public async Task SendMessageToGroupAsync(string message, LinkPreviewAttachment previewData)
+    {
+        try
+        {
+            SendMessageV2 data = new SendMessageV2();
+            data.Recipients = new List<string>();
+            data.Recipients.Add(AppConfiguration.Instance.SignalGroupId);
+            data.Message = (AppConfiguration.Instance.UseBotTag ? "**[Proggy]**\n" : "") + message;
+            data.Text_mode = SendMessageV2Text_mode.Styled;
+            data.Number = AppConfiguration.Instance.HostPhoneNumber;
+            data.Link_preview = new LinkPreviewType();
+            data.Link_preview.Url = previewData.Url;
+            data.Link_preview.Title = previewData.Title;
+            data.Link_preview.Description = previewData.Description;
+            data.Link_preview.Base64_thumbnail = previewData.Base64Image;
+            var response = await apiClient.Send2Async(data);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError("Exception (SendMessageToGroupAsync): " + ex.Message);
         }
     }
 
@@ -70,20 +114,48 @@ public class SignalIntegration
         }
         catch (Exception ex)
         {
-            Console.WriteLine("Exception (SendMessageToUserAsync): " + ex.Message);
+            logger.LogError("Exception (SendMessageToUserAsync): " + ex.Message);
+        }
+    }
+
+    public async Task SendMessageToUserAsync(string message, LinkPreviewAttachment previewData, string userId)
+    {
+        try
+        {
+            SendMessageV2 data = new SendMessageV2();
+            data.Recipients = new List<string>();
+            data.Recipients.Add(userId);
+            data.Message = (AppConfiguration.Instance.UseBotTag ? "**[Proggy]**\n" : "") + message;
+            data.Text_mode = SendMessageV2Text_mode.Styled;
+            data.Number = AppConfiguration.Instance.HostPhoneNumber;
+            data.Link_preview = new LinkPreviewType();
+            data.Link_preview.Url = previewData.Url;
+            data.Link_preview.Title = previewData.Title;
+            data.Link_preview.Description = previewData.Description;
+            data.Link_preview.Base64_thumbnail = previewData.Base64Image;
+            var response = await apiClient.Send2Async(data);
+        }
+        catch (Exception ex)
+        {
+            logger.LogError("Exception (SendMessageToUserAsync): " + ex.Message);
         }
     }
 
     public async Task IntroduceUserAsync(User user)
     {
+        if (user == null || user.SignalMemberId == null)
+        {
+            logger.LogWarning("Attempt to introduce unknown user was aborted.");
+            return;
+        }
         await this.SendMessageToUserAsync("Hi, my name is Proggy and I am your friendly neighborhood *Song of the Day* bot!", user.SignalMemberId);
         await this.SendMessageToUserAsync("You are receiving this message because you have been invited to a *Song of the Day* community group.", user.SignalMemberId);
-        await this.SendMessageToUserAsync("In that community group I will pick a person at random each day at 8 AM and encourage them to share a song with the rest of the community.", user.SignalMemberId);
+        await this.SendMessageToUserAsync("In that community group I will pick a person at random every now and then and encourage them to share a song with the rest of the community.", user.SignalMemberId);
         if (AppConfiguration.Instance.UseBotTag)
         {
             await this.SendMessageToUserAsync("You can always see which messages are sent by me rather than the community host by the **[Proggy]** tag at the beginning of the message", user.SignalMemberId);
         }
-        await this.SendMessageToUserAsync($"Not right now, but eventually you will be able to see more details about your community at {AppConfiguration.Instance.WebUIBaseURL}.", user.SignalMemberId);
+        await this.SendMessageToUserAsync($"You can find more details about your community at {AppConfiguration.Instance.WebUIBaseURL}.", user.SignalMemberId);
         await this.SendMessageToUserAsync($"""You can navigate to {AppConfiguration.Instance.WebUIBaseURL + (AppConfiguration.Instance.WebUIBaseURL.EndsWith("/") ? "" : "/")}User/{user.UserId} to set your preferred display name for me to use.""", user.SignalMemberId);
         await this.SendMessageToUserAsync($"Now have fun and enjoy being a part of this community!", user.SignalMemberId);
     }
@@ -97,7 +169,7 @@ public class SignalIntegration
         }
         catch (Exception ex)
         {
-            Console.WriteLine("Exception (GetMemberListAsync): " + ex.Message);
+            logger.LogError("Exception (GetMemberListAsync): " + ex.Message);
         }
         return new List<string>();
     }
@@ -117,7 +189,7 @@ public class SignalIntegration
         }
         catch (Exception ex)
         {
-            Console.WriteLine("Exception (GetContactAsync): " + ex.Message);
+            logger.LogError("Exception (GetContactAsync): " + ex.Message);
             return new ListContactsResponse();
         }
     }

song_of_the_day/Pages/Index.cshtml

@@ -5,6 +5,47 @@
 }
 
 <div class="text-center">
-    <h1 class="display-4">Welcome</h1>
-    <p>Learn about <a href="https://learn.microsoft.com/aspnet/core">building Web apps with ASP.NET Core</a>.</p>
+    <h1 class="display-4">Submission History</h1>
+    <table>
+        <tr>
+            <th>Date</th>
+            <th>Song</th>
+            <th>Submitter</th>
+            @if(@User.Identity.IsAuthenticated)
+            {
+                <th>Details</th>
+                <th></th>
+            }
+        </tr>
+        @foreach(var songSuggestion in Model.SongSuggestions)
+        {
+            @if(songSuggestion != null && songSuggestion.Song != null && songSuggestion.User != null && songSuggestion.UserHasSubmitted)
+            {
+                var displayName = string.IsNullOrEmpty(songSuggestion?.User?.NickName) 
+                    ? songSuggestion?.User.Name 
+                    : songSuggestion.User.NickName;
+                    
+                <tr>
+                    <td>@songSuggestion?.Date.ToString("dd. MM. yyyy")</td>
+                    <td><a href="@songSuggestion?.Song.Url" target="_blank">@string.Format("{0} - {1}", songSuggestion?.Song.Name, songSuggestion?.Song.Artist)</a></td>
+                    <td>@displayName</td>
+                    @if(@User.Identity.IsAuthenticated)
+                    {
+                        <td><a href="/SongSubmission/@songSuggestion?.Id">View</a></td>
+                        <td class="=viewLike">
+                            @if(songSuggestion?.Song != null)
+                            {
+                                var handler = Model.HasUserLikedThisSong(@songSuggestion.Song) ? "UnlikeSong" : "LikeSong";
+                                var likebuttonText = Model.HasUserLikedThisSong(@songSuggestion.Song) ? "Unlike" : "Like";
+                                <form method="post">
+                                    <input name="songId" value="@songSuggestion.Song.SongId" type="hidden" /> 
+                                    <input type="submit" id="songlike" value="@likebuttonText" asp-page-handler="@handler" />
+                                </form>
+                            }
+                        </td>
+                    }
+                </tr>
+            }
+        }
+    </table>
 </div>

song_of_the_day/Pages/Index.cshtml.cs

@@ -1,5 +1,7 @@
+using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.RazorPages;
+using Microsoft.EntityFrameworkCore;
 
 namespace sotd.Pages;
 
@@ -12,8 +14,71 @@ public class IndexModel : PageModel
         _logger = logger;
     }
 
-    public void OnGet()
-    {
+    [BindProperty]
+    public List<SongSuggestion> SongSuggestions { get; set; } = new List<SongSuggestion>();
 
+    private User _currentUser;
+
+    public User CurrentUser
+    {
+        get
+        {
+            if (_currentUser == null)
+            {
+                var userName = this.User.Identity.Name;
+                using (var dci = DataContext.Instance)
+                {
+                    _currentUser = dci.Users.Include(u => u.LikedSongs).Where(u => u.LdapUserName == userName).SingleOrDefault();
+                }
+            }
+
+            return _currentUser;
+        }
+
+    }
+
+    public bool HasUserLikedThisSong(Song song)
+    {
+        return CurrentUser.LikedSongs.Where(s => s.SongId == song.SongId).FirstOrDefault() != default(Song);
+    }
+
+    public Task OnGet()
+    {
+        using var dci = DataContext.Instance;
+        SongSuggestions = dci.SongSuggestions.OrderByDescending(s => s.Date)
+            .Take(50)
+            .Include(s => s.Song)
+            .Include(s => s.User)
+            .ToList();
+        return Task.CompletedTask;
+    }
+
+    public async Task<IActionResult> OnPostLikeSong(int? songId)
+    {
+        using (var dci = DataContext.Instance)
+        {
+            var user = dci.Users.Include(u => u.LikedSongs).Where(u => u.UserId == CurrentUser.UserId).SingleOrDefault();
+            if (user.LikedSongs.Find(s => s.SongId == songId) == default(Song))
+            {
+                user.LikedSongs.Add(dci.Songs.Find(songId));
+                await dci.SaveChangesAsync();
+            }
+        }
+        return RedirectToPage("/");
+    }
+
+    public async Task<IActionResult> OnPostUnlikeSong(int? songId)
+    {
+        using (var dci = DataContext.Instance)
+        {
+            var user = dci.Users.Include(u => u.LikedSongs).Where(u => u.UserId == CurrentUser.UserId).SingleOrDefault();
+            var songToRemove = user.LikedSongs.Where(s => s.SongId == songId).SingleOrDefault();
+            if (songToRemove != default(Song))
+            {
+                user.LikedSongs.Remove(songToRemove);
+                await dci.SaveChangesAsync();
+            }
+        }
+        return RedirectToPage("/");
     }
 }

song_of_the_day/Pages/Shared/SongPartialModel.cs

@@ -0,0 +1,16 @@
+public class SongPartialModel
+{
+    public required Song InnerSong { get; set; }
+
+    public string? Artist => InnerSong.Artist;
+
+    public string? Name => InnerSong.Name;
+
+    public string? SpotifyId => InnerSong.SpotifyId;
+
+    public string? Url => InnerSong.Url;
+
+    public SongProvider? Provider => InnerSong.Provider;
+
+    public bool IsPageReadonly { get; set; }
+}

song_of_the_day/Pages/Shared/UpdateInputText.razor

@@ -0,0 +1,2 @@
+@inherits Microsoft.AspNetCore.Components.Forms.InputText
+<input @attributes="@AdditionalAttributes" class="@CssClass" @bind="@CurrentValueAsString" @bind:event="oninput" />

song_of_the_day/Pages/Shared/_Layout.cshtml

@@ -3,8 +3,8 @@
     {
         using (var dci = DataContext.Instance)
         {
-            var user = dci.Users.Where(u => u.LdapUserName == User.Identity.Name);
-            return user.Any();
+            var user = dci.Users?.Where(u => u.LdapUserName == User.Identity.Name);
+            return user == null ? false : user.Any();
         }
     }
 }
@@ -18,7 +18,7 @@
     <script type="importmap"></script>
     <link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
     <link rel="stylesheet" href="~/css/site.css" asp-append-version="true" />
-    <link rel="stylesheet" href="~/sotd.styles.css" asp-append-version="true" />
+    <link rel="stylesheet" href="~/song_of_the_day.styles.css" asp-append-version="true" />
 </head>
 <body>
     <header>
@@ -37,12 +37,20 @@
                         <li class="nav-item">
                             <a class="nav-link text-dark" asp-area="" asp-page="/SuggestionHelpers">Suggestion Helpers</a>
                         </li>
-                        @if (this.User.Identity.IsAuthenticated && !DoesUserHaveClaimedPhoneNumber())
+                        @if (this.User != null && this.User.Identity != null &&
+                            this.User.Identity.IsAuthenticated && !DoesUserHaveClaimedPhoneNumber())
                         {
                             <li class="nav-item">
                                 <a class="nav-link text-dark" asp-area="" asp-page="/UnclaimedPhoneNumbers">Unclaimed Phone Numbers</a>
                             </li>
                         }
+                        @if (this.User != null && this.User.Identity != null &&
+                            this.User.Identity.IsAuthenticated && DoesUserHaveClaimedPhoneNumber())
+                        {
+                            <li class="nav-item">
+                                <a class="nav-link text-dark" href="/SongSubmission/">Song Submissions</a>
+                            </li>
+                        }
                     </ul>
                 </div>
             </div>

song_of_the_day/Pages/Shared/_Layout.cshtml.css

@@ -45,4 +45,4 @@ button.accept-policy {
   width: 100%;
   white-space: nowrap;
   line-height: 60px;
-}
+}

song_of_the_day/Pages/Shared/_LoginView.cshtml

@@ -1,7 +1,7 @@
 @using Microsoft.AspNetCore.Authentication
 
 <div class="loginform">
-    @if (!this.User.Identity.IsAuthenticated)
+    @if (this.User == null || this.User.Identity == null || !this.User.Identity.IsAuthenticated)
     {
         <form method="post" action="Auth/Login">
             <div>
@@ -23,9 +23,15 @@
     }
     else
     {
+        var userName = User.Identity.Name;
+        var dci = DataContext.Instance;
+        var selectedUsers = dci.Users.Where(u => u.LdapUserName == userName);
+        var userId = selectedUsers.SingleOrDefault()?.UserId;
+        dci.Dispose();
+
         <form method="post" action="Auth/Logout">
             <div>
-                Welcome, @User.Identity.Name!
+                Welcome, <a href="/User/@userId">@User.Identity.Name</a>!
             </div>
             <div>
                 <input name="submit" type="submit" value="Logout" />

song_of_the_day/Pages/Shared/_SongPartial.cshtml

@@ -0,0 +1,8 @@
+@model SongPartialModel
+<label asp-for="Name">Name:</label>
+<input asp-for="Name" oninput="UpdateSongSuggestions()" disabled="@Model.IsPageReadonly" />
+<label asp-for="Artist">Artist:</label>
+<input asp-for="Artist" oninput="UpdateSongSuggestions()" disabled="@Model.IsPageReadonly" />
+<label asp-for="SpotifyId">Spotify ID:</label>
+<input asp-for="SpotifyId" readonly="@Model.Provider.Equals(SongProvider.Spotify)" disabled="@Model.IsPageReadonly" />
+<input asp-for="Provider" hidden />

song_of_the_day/Pages/Shared/_SpotifySongSuggestionsPartial.cshtml

@@ -0,0 +1,38 @@
+@model List<SpotifyAPI.Web.FullTrack>
+<div class="spotifySongSelector">
+    @foreach(var track in Model)
+    {
+        <div class="songSelectorButton" onclick="clickHandler(this)">
+            <div class="songName">@track.Name</div>
+            <div class="artist">@track.Artists[0].Name</div>
+            <div class="album">@track.Album.Name</div>
+            <div class="id" hidden>@track.Id</div>
+            <div class="albumCover">
+                <img src="@track.Album.Images[0].Url" width="50px" height="50px"/>
+            </div>
+        </div>
+    }
+</div>
+
+<script>
+    function clickHandler(t) {
+        // remove previous selection
+        $('.songSelectorButton').removeClass("selected");
+        t.classList.add("selected");
+        var idElement = t.getElementsByClassName("id")[0]
+        console.log(idElement);
+        SetSpotifyId(idElement.textContent);
+    }
+
+    function initializeSelection() {
+        var currentSpotifyId = GetSpotifyId();
+        $('.songSelectorButton').each(function(i, e) {
+            if(e.getElementsByClassName("id")[0].textContent == currentSpotifyId)
+            {
+                e.classList.add("selected");
+            }
+        });
+    }
+
+    initializeSelection();
+</script>

song_of_the_day/Pages/Shared/_SpotifySongSuggestionsPartial.cshtml.css

@@ -0,0 +1,16 @@
+.songSelectorButton {
+  background-color: #e3e6e7;
+  padding: 5px;
+}
+
+.songSelectorButton:nth-child(2n) {
+  background-color: #cacbce;
+}
+
+.songSelectorButton.selected {
+  background-color: #a0c3e5;
+  border-radius: 2px;
+  border-style: solid;
+  border-width: 2px;
+  border-color: #285786;
+}

song_of_the_day/Pages/SongSubmission.cshtml

@@ -0,0 +1,170 @@
+@page "{submissionIndex:int?}"
+@model SongSubmissionModel
+@{
+    ViewData["Title"] = this.Model.SubmissionIndex == null ? "Song Submissions" : "New Song Submission";
+}
+
+@if(Model.SubmissionIndex == null)
+{
+    <div class="text-left">
+        <h1>Your Submission History:</h1>
+        <table id="submissionTable">
+            <tr>
+                <th>Date</th>
+                <th>Suggestion</th>
+                <th>Song</th>
+                <th></th>
+                <th></th>
+            </tr>
+            @foreach(var submission in Model.UserSongSubmissions)
+            {
+                <tr>
+                    <td class="submissionDate">
+                        @submission.Date.ToString("dd. MM. yyyy")
+                    </td>
+                    <td class="submissionSuggestion">
+                        @if(submission.Song == null || submission.HasUsedSuggestion)
+                        {
+                            @submission.SuggestionHelper.Title
+                        }
+                    </td>
+                    <td class="submissionSong">
+                        @if(submission.Song != null)
+                        {
+                            @string.Format("{0} - {1}", submission.Song.Name, submission.Song.Artist);
+                        }
+                        else
+                        {
+                            <div style="font-style: italic;">No submission yet!</div>
+                        }
+                    </td>
+                    <td class="=viewLink">
+                        @{
+                            var buttonClass = submission.Song == null ? "submitButton" : "viewButton";
+                            var buttonText = submission.Song == null ? "Submit Song" : "View";
+                        }
+                        <button class=@buttonClass onclick="redirectTo(@submission.Id)">@buttonText</button>
+                    </td>
+                    <td class="=viewLike">
+                        @if(submission.Song != null)
+                        {
+                            var handler = Model.HasUserLikedThisSong(submission.Song) ? "UnlikeSong" : "LikeSong";
+                            var likebuttonText = Model.HasUserLikedThisSong(submission.Song) ? "Unlike" : "Like";
+                            <form method="post">
+                                <input name="songId" value="@submission.Song.SongId" type="hidden" /> 
+                                <input type="submit" id="songlike" value="@likebuttonText" asp-page-handler="@handler" />
+                            </form>
+                        }
+                    </td>
+                </tr>
+            }
+        </table>
+    </div>
+}
+else
+{
+    <div class="text-left">
+        <div class="suggestionHelper">
+            <div class="title">Today's suggestionHelper is: <b>@Model.SuggestionHelper?.Title</b></div>
+            <div class="description" style="font-style: italic;">@Model.SuggestionHelper?.Description</div>
+        </div>
+        <form method="post">
+            <label asp-for="SubmitUrl" >Song Url:</label>
+            <input asp-for="SubmitUrl" oninput="Update(this)"  disabled="@Model.IsPageReadonly" />
+            <label asp-for="HasUsedSuggestion">Submission has used suggestion.</label>
+            <input asp-for="HasUsedSuggestion" checked  disabled="@Model.IsPageReadonly" />
+            @{
+                var songPartialModel = new SongPartialModel() {
+                    InnerSong = Model.SongData,
+                    IsPageReadonly = Model.IsPageReadonly
+                };
+            }
+            <div id="songdata">
+                <partial name="_SongPartial" model="@songPartialModel" />
+            </div>
+            @if(!Model.IsPageReadonly)
+            {
+                <div id="suggestionPicker">
+                    <partial name="_SpotifySongSuggestionsPartial" model="@Model.SpotifySuggestions" />
+                </div>
+            }
+            <input type="submit" id="songsubmit" title="Submit" value="Submit" disabled="@Model.CanSubmit" />
+        </form>
+    </div>
+}
+
+
+@if(Model.SubmissionIndex == null)
+{
+    // inject relevant scripts
+    <script>
+        function redirectTo(id) {
+            window.location.href = '/SongSubmission/' + id;
+        }
+    </script>
+}
+else
+{
+    <script>
+        var skipUpdate = false;
+
+        function ReevaluateSubmit(callback) {
+            var canSubmit = $('#songdata #Name').val().length > 0 && $('#songdata #Artist').val().length > 0;
+            if(canSubmit)
+            {
+                $('#songsubmit').removeAttr("disabled");
+            }
+            else
+            {
+                $('#songsubmit').attr("disabled", "disabled");
+            }
+            if(callback)
+            {
+                callback();
+            }
+        }
+
+        function Update(t) {
+            var songDataUrl = '?handler=Update&&SubmitUrl=' + $(t).val();
+            $('#songdata').load(songDataUrl, null, function() {
+                ReevaluateSubmit(function() {
+                    UpdateSongSuggestions(t);
+                });
+            });
+        }
+
+        function UpdateSongSuggestions() {
+            if(skipUpdate)
+            {
+                return;
+            }  
+            skipUpdate = true;
+            var trackName = $('#songdata #Name').val();
+            var artistName = $('#songdata #Artist').val();
+            var submitUrl = $('#SubmitUrl').val();
+            var provider = $('#songdata #Provider').val();
+            var spotifyId = $('#songdata #SpotifyId').val();
+            var suggestionDataUrl = '?handler=SpotifySuggestions&song=' + encodeURIComponent(trackName) 
+                + '&artist=' + encodeURIComponent(artistName)
+                + '&submitUrl=' + encodeURI(submitUrl)
+                + '&provider=' + encodeURI(provider)
+                + '&spotifyId=' + encodeURI(spotifyId);
+            $('#suggestionPicker').load(suggestionDataUrl, null, function() {
+                ReevaluateSubmit();
+                skipUpdate = false;
+            });
+        }
+
+        function SetSpotifyId(id) {
+            $('#SpotifyId').val(id);
+            ReevaluateSubmit();
+        }
+
+        function GetSpotifyId() {
+            return $('#SpotifyId').val();
+        }
+
+        document.getElementById('songdata').oninput = ReevaluateSubmit;
+        ReevaluateSubmit();
+    </script>
+}

song_of_the_day/Pages/SongSubmission.cshtml.cs

@@ -0,0 +1,290 @@
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Components;
+using Microsoft.AspNetCore.Http.HttpResults;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.VisualBasic;
+
+namespace sotd.Pages;
+
+public class SongSubmissionModel : PageModel
+{
+    private readonly ILogger<UserModel> _logger;
+
+    private SongResolver songResolver;
+
+    private string _submitUrl;
+
+    private SpotifyApiClient spotifyApiClient;
+
+    private SignalIntegration signalIntegration;
+
+    public SongSubmissionModel(ILogger<UserModel> logger, SongResolver songResolver, SpotifyApiClient spotifyApiClient, SignalIntegration signalIntegration)
+    {
+        _logger = logger;
+        this.spotifyApiClient = spotifyApiClient;
+        this.songResolver = songResolver;
+        this.signalIntegration = signalIntegration;
+        _submitUrl = string.Empty;
+        SongData = new Song();
+    }
+
+    [Parameter]
+    public int? SubmissionIndex { get; set; }
+
+    [BindProperty]
+    public bool IsValidUrl { get; set; } = true;
+
+    [BindProperty]
+    public bool IsPageReadonly { get; set; } = false;
+
+    [BindProperty]
+    public SuggestionHelper? SuggestionHelper { get; set; } = null;
+
+    [BindProperty]
+    public List<SongSuggestion> UserSongSubmissions { get; set; } = [];
+
+    [BindProperty(SupportsGet = true)]
+    public string SubmitUrl
+    {
+        get
+        {
+            return _submitUrl;
+        }
+        set
+        {
+            _submitUrl = value == null ? string.Empty : value.ToString();
+            Uri? newValue = default;
+            try
+            {
+                newValue = new Uri(_submitUrl);
+            }
+            catch (UriFormatException)
+            {
+                IsValidUrl = false;
+                return;
+            }
+
+            IsValidUrl = true;
+
+            if (this.songResolver.CanValidate(newValue))
+            {
+                this.SongData = this.songResolver.ResolveSongAsync(newValue).Result;
+            }
+        }
+    }
+
+    private User _currentUser;
+
+    public User CurrentUser
+    {
+        get
+        {
+            if (_currentUser == null)
+            {
+                var userName = this.User.Identity.Name;
+                using (var dci = DataContext.Instance)
+                {
+                    _currentUser = dci.Users.Include(u => u.LikedSongs).Where(u => u.LdapUserName == userName).SingleOrDefault();
+                }
+            }
+
+            return _currentUser;
+        }
+
+    }
+
+    public List<SpotifyAPI.Web.FullTrack> SpotifySuggestions
+    {
+        get
+        {
+            var suggestionList = new List<SpotifyAPI.Web.FullTrack>();
+            if (!string.IsNullOrEmpty(this.SongData.Name) && !string.IsNullOrEmpty(this.SongData.Artist))
+            {
+                suggestionList.AddRange(spotifyApiClient.GetTrackCandidatesAsync(this.SongData.Name, this.SongData.Artist).Result);
+            }
+            return suggestionList;
+        }
+    }
+
+    public IActionResult OnGetSpotifySuggestions(string song, string artist, string submitUrl, SongProvider provider, string spotifyId)
+    {
+        this.SongData.Name = song;
+        this.SongData.Artist = artist;
+        this.SongData.Url = submitUrl;
+        this.SongData.Provider = provider;
+        this.SongData.SpotifyId = spotifyId;
+        return Partial("_SpotifySongSuggestionsPartial", this.SpotifySuggestions);
+    }
+
+    [BindProperty]
+    public string CanSubmit
+    {
+        get
+        {
+            var disableCondition = !(string.IsNullOrEmpty(SongData?.Artist) && string.IsNullOrEmpty(SongData?.Name));
+            return disableCondition ? "" : "disabled";
+        }
+    }
+
+    [BindProperty(SupportsGet = true)]
+    public Song SongData { get; set; }
+
+    [BindProperty(SupportsGet = true)]
+    public bool HasUsedSuggestion { get; set; } = true;
+
+    public bool HasUserLikedThisSong(Song song)
+    {
+        return CurrentUser.LikedSongs.Where(s => s.SongId == song.SongId).FirstOrDefault() != default(Song);
+    }
+
+    private async Task UpdateGroup(SongSuggestion suggestion)
+    {
+        var isItToday = suggestion.Date.Date == DateTime.Today;
+        var dateString = isItToday ? "submission for today" : "submission from " + suggestion.Date.ToString("dd. MM. yyyy");
+        var displayName = string.IsNullOrEmpty(suggestion.User.NickName) ? suggestion.User.Name : suggestion.User.NickName;
+        var imageBuilder = await songResolver.GetPreviewImageAsync(suggestion.Song.SpotifyId);
+        var previewData = new LinkPreviewAttachment()
+        {
+            Title = suggestion.Song.Name,
+            Description = suggestion.Song.Artist,
+            Url = suggestion.Song.Url,
+            Base64Image = imageBuilder.ToString(),
+        };
+        await signalIntegration.SendMessageToGroupAsync($"**{displayName}**'s " + dateString + $" is: \n\n{suggestion.Song.Url}", previewData);
+        if (suggestion.HasUsedSuggestion)
+        {
+            await signalIntegration.SendMessageToGroupAsync($"The suggestion used for this pick was: \n\n**{suggestion.SuggestionHelper.Title}** \n\n{suggestion.SuggestionHelper.Description}");
+        }
+    }
+
+    public async Task<IActionResult> OnPost(int? submissionIndex)
+    {
+        if (submissionIndex == null)
+        {
+            throw new Exception("Attempt to submit song without submissionId");
+        }
+        // Todo implement save submission
+        using var dci = DataContext.Instance;
+        var suggestion = dci.SongSuggestions
+                .Include(s => s.User)
+                .Include(s => s.SuggestionHelper)
+                .Where(s => s.Id == submissionIndex)
+                .FirstOrDefault();
+
+        if (suggestion == null)
+        {
+            throw new Exception("Attempt to submit song with invalid submissionId");
+        }
+
+        this.SongData.Artist = Request.Form["Artist"];
+        this.SongData.Url = Request.Form["SubmitUrl"];
+        this.SongData.Name = Request.Form["Name"];
+        this.SongData.SpotifyId = Request.Form["SpotifyId"];
+        this.SongData.Provider = Enum.Parse<SongProvider>(Request.Form["Provider"]);
+
+        // Let's check if we already have this song in the DB
+        var songToUse = dci.Songs.Where(s => s.SpotifyId == this.SongData.SpotifyId).FirstOrDefault();
+        if (songToUse == null)
+        {
+            // Song was not in DB yet, creating a new one
+            var newSong = new Song()
+            {
+                SpotifyId = this.SongData.SpotifyId,
+                Artist = this.SongData.Artist,
+                Name = this.SongData.Name,
+                Url = this.SongData.Url,
+                Provider = this.SongData.Provider,
+            };
+            var dbRecord = dci.Songs.Add(newSong);
+            var newId = await dci.SaveChangesAsync();
+            songToUse = dbRecord.Entity;
+        }
+        suggestion.Song = songToUse;
+        suggestion.UserHasSubmitted = true;
+        suggestion.HasUsedSuggestion = this.HasUsedSuggestion;
+        dci.Update(suggestion);
+        await dci.SaveChangesAsync();
+        // load overview page again after submitting
+
+        await UpdateGroup(suggestion);
+
+        return RedirectToPage("SongSubmission");
+    }
+
+    public void OnGet(int? submissionIndex)
+    {
+        this.SubmissionIndex = submissionIndex;
+
+        // we want to show overview, so we need to fetch user submission list
+        if (submissionIndex == null)
+        {
+            using var dci = DataContext.Instance;
+            var currentUserName = this.User.Identity.Name;
+            this.UserSongSubmissions = dci.SongSuggestions
+                            .Include(s => s.SuggestionHelper)
+                            .Include(s => s.Song)
+                            .Where(s => s.User.LdapUserName.Equals(currentUserName))
+                            .OrderByDescending(s => s.Date)
+                            .ToList();
+        }
+        else
+        {
+            using var dci = DataContext.Instance;
+            var songSuggestion = dci.SongSuggestions
+                            .Include(s => s.SuggestionHelper)
+                            .Include(s => s.Song)
+                            .Where(s => s.Id.Equals(submissionIndex.Value))
+                            .First();
+            this.SuggestionHelper = songSuggestion.SuggestionHelper;
+            this.SongData = songSuggestion.Song == null ? new Song() : songSuggestion.Song;
+            this.SubmitUrl = this.SongData.Url;
+            if (!string.IsNullOrEmpty(this.SongData.Name) && !string.IsNullOrEmpty(this.SongData.Artist))
+            {
+                this.IsPageReadonly = true;
+            }
+        }
+    }
+
+    public async Task<IActionResult> OnPostLikeSong(int? songId)
+    {
+        using (var dci = DataContext.Instance)
+        {
+            var user = dci.Users.Include(u => u.LikedSongs).Where(u => u.UserId == CurrentUser.UserId).SingleOrDefault();
+            if (user.LikedSongs.Find(s => s.SongId == songId) == default(Song))
+            {
+                user.LikedSongs.Add(dci.Songs.Find(songId));
+                await dci.SaveChangesAsync();
+            }
+        }
+        return RedirectToPage("SongSubmission");
+    }
+
+    public async Task<IActionResult> OnPostUnlikeSong(int? songId)
+    {
+        using (var dci = DataContext.Instance)
+        {
+            var user = dci.Users.Include(u => u.LikedSongs).Where(u => u.UserId == CurrentUser.UserId).SingleOrDefault();
+            var songToRemove = user.LikedSongs.Where(s => s.SongId == songId).SingleOrDefault();
+            if (songToRemove != default(Song))
+            {
+                user.LikedSongs.Remove(songToRemove);
+                await dci.SaveChangesAsync();
+            }
+        }
+        return RedirectToPage("SongSubmission");
+    }
+
+    public IActionResult OnGetUpdate()
+    {
+        var songUrl = Request.Query["SubmitUrl"];
+        this.SubmitUrl = songUrl.ToString();
+        var songPartialModel = new SongPartialModel()
+        {
+            InnerSong = SongData,
+            IsPageReadonly = false
+        };
+        return Partial("_SongPartial", songPartialModel); ;
+    }
+}

song_of_the_day/Pages/SuggestionHelpers.cshtml.cs

@@ -29,7 +29,7 @@ public class SuggestionHelpersModel : PageModel
     {
         using (var dci = DataContext.Instance)
         {
-            this.SuggestionHelpers = dci.SuggestionHelpers.ToList();
+            this.SuggestionHelpers = dci.SuggestionHelpers == null ? new List<SuggestionHelper>() : dci.SuggestionHelpers.ToList();
         }
     }
 
@@ -42,9 +42,9 @@ public class SuggestionHelpersModel : PageModel
                 Title = this.NewSuggestionTitle,
                 Description = this.NewSuggestionDescription
             };
-            dci.SuggestionHelpers.Add(newHelper);
+            dci.SuggestionHelpers?.Add(newHelper);
             dci.SaveChanges();
-            this.SuggestionHelpers = dci.SuggestionHelpers.ToList();
+            this.SuggestionHelpers = dci.SuggestionHelpers == null ? new List<SuggestionHelper>() : dci.SuggestionHelpers.ToList();
         }
         this.NewSuggestionDescription = "";
         this.NewSuggestionTitle = "";

song_of_the_day/Pages/UnclaimedPhoneNumbers.cshtml.cs

@@ -1,6 +1,7 @@
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.RazorPages;
 using Microsoft.VisualBasic;
+using SpotifyAPI.Web;
 
 namespace sotd.Pages;
 
@@ -11,6 +12,7 @@ public class UnclaimedPhoneNumbersModel : PageModel
     public UnclaimedPhoneNumbersModel(ILogger<UserModel> logger)
     {
         _logger = logger;
+        UnclaimedUsers = new List<User>();
     }
 
     public int userId { get; set; }
@@ -22,7 +24,7 @@ public class UnclaimedPhoneNumbersModel : PageModel
     {
         using (var dci = DataContext.Instance)
         {
-            this.UnclaimedUsers = dci.Users.Where(u => string.IsNullOrEmpty(u.LdapUserName)).ToList();
+            this.UnclaimedUsers = dci.Users == null ? new List<User>() : dci.Users.Where(u => string.IsNullOrEmpty(u.LdapUserName)).ToList();
         }
     }
 

song_of_the_day/Pages/User.cshtml

@@ -1,4 +1,5 @@
 @page "{userIndex}"
+
 @model UserModel
 @{
     ViewData["Title"] = "User #" + @Model.userId;
@@ -12,6 +13,20 @@
         <label asp-for="UserName">Contact Name</label>
         <input asp-for="UserName" disabled /> 
         <br />
-        <input type="submit" title="Submit" />
+        <input type="submit" value="Submit" />
     </form>
+    @if(@Model.IsSpotifyAuthenticated)
+    {
+        <form method="post" >
+            <input name="userIndex" value="@Model.userId" type="hidden" /> 
+            <input type="submit" value="Deauthorize Spotify"  asp-page-handler="SpotifyLogout" />
+        </form>
+    }
+    else
+    {
+        <form method="post" >
+            <input name="userIndex" value="@Model.userId" type="hidden" /> 
+            <input type="submit" value="Connect to Spotify"  asp-page-handler="SpotifyLogin" />
+        </form>
+    }
 </div>

song_of_the_day/Pages/User.cshtml.cs

@@ -1,5 +1,8 @@
+using Microsoft.AspNetCore.Components;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.RazorPages;
+using SpotifyAPI.Web;
+using System.Web;
 
 namespace sotd.Pages;
 
@@ -18,28 +21,67 @@ public class UserModel : PageModel
 
     public string UserName { get; set; }
 
+    public bool IsSpotifyAuthenticated { get; set; }
+
     [BindProperty]
     public string UserNickName { get; set; }
 
-    public void OnGet(int userIndex)
+    public async Task OnGet(int userIndex, [FromServices] SpotifyApiClient spotifyClient)
     {
         using (var dci = DataContext.Instance)
         {
-            var user = dci.Users.Find(userIndex);
-            this.UserName = user.Name;
-            this.UserNickName = user.NickName;
+            var user = dci.Users?.Find(userIndex);
+            this.UserName = user == null ? string.Empty : (user.Name ?? string.Empty);
+            this.UserNickName = user == null ? string.Empty : (user.NickName ?? string.Empty);
             this.userId = userIndex;
+            this.IsSpotifyAuthenticated = await spotifyClient.IsUserAuthenticatedAsync(user);
         }
     }
 
-    public void OnPost(int userIndex)
+    public async Task OnPost(int userIndex, [FromServices] SpotifyApiClient spotifyClient)
     {
         using (var dci = DataContext.Instance)
         {
-            var user = dci.Users.Find(userIndex);
-            user.NickName = this.UserNickName;
-            dci.SaveChanges();
-            this.UserName = user.Name;
+            var user = dci.Users?.Find(userIndex);
+            if (user != null)
+            {
+                user.NickName = this.UserNickName;
+                dci.SaveChanges();
+                this.UserName = user.Name ?? string.Empty;
+                this.IsSpotifyAuthenticated = await spotifyClient.IsUserAuthenticatedAsync(user);
+            }
+        }
+    }
+
+    public IActionResult OnPostSpotifyLogin(int userIndex, string currentUri, [FromServices] SpotifyApiClient spotifyClient)
+    {
+        _logger.LogTrace($"Attempting Spotify login for user with id {userIndex}.");
+
+        var loginRequest = new LoginRequest(
+                    new Uri(spotifyClient.GetLoginRedirectUri()),
+                    AppConfiguration.Instance.SpotifyClientId,
+                    LoginRequest.ResponseType.Code)
+        {
+            Scope = new[] { Scopes.PlaylistReadPrivate, Scopes.PlaylistReadCollaborative, Scopes.PlaylistModifyPrivate, Scopes.PlaylistModifyPublic, Scopes.UgcImageUpload }
+        };
+        var redirectUri = loginRequest.ToUri().ToString() + $"&finalRedirect={HttpUtility.UrlEncode($"{Request.Scheme}://{Request.Host}:{Request.Host.Port ?? 80}{Request.Path}")}";
+
+        return this.Redirect(redirectUri);
+    }
+
+    public async Task OnPostSpotifyLogout(int userIndex, [FromServices] SpotifyApiClient spotifyClient)
+    {
+        _logger.LogTrace($"Attempting to deauthorize Spotify for user with id {userIndex}.");
+
+        using (var dci = DataContext.Instance)
+        {
+            var user = dci.Users?.Find(userIndex);
+            if (user != null)
+            {
+                await spotifyClient.DeAuthorizeUserAsync(user);
+                user.NickName = this.UserNickName;
+                this.UserName = user.Name ?? string.Empty;
+            }
         }
     }
 }

song_of_the_day/Program.cs

@@ -1,28 +1,42 @@
 
 using Scalar.AspNetCore;
-using Microsoft.AspNetCore.OpenApi;
 using Microsoft.EntityFrameworkCore;
-using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Authentication.Cookies;
-using System.DirectoryServices.Protocols;
-using System.Runtime.CompilerServices;
-
-SignalIntegration.Instance = new SignalIntegration(AppConfiguration.Instance.SignalAPIEndpointUri,
-                                                    int.Parse(AppConfiguration.Instance.SignalAPIEndpointPort),
-                                                    AppConfiguration.Instance.HostPhoneNumber);
-
-LdapIntegration.Instance = new LdapIntegration(AppConfiguration.Instance.LDAPConfig.LDAPserver,
-                                                    AppConfiguration.Instance.LDAPConfig.Port,
-                                                    AppConfiguration.Instance.LDAPConfig.Username,
-                                                    AppConfiguration.Instance.LDAPConfig.Password);
+using Microsoft.AspNetCore.Mvc;
+using SpotifyAPI.Web;
+using Microsoft.AspNetCore.Components.Authorization;
 
 var builder = WebApplication.CreateBuilder(args);
 
-Console.WriteLine("Setting up user check timer");
-var userCheckTimer = new CronTimer("*/1 * * * *", "Europe/Vienna", includingSeconds: false);
+
+// Add services to the container.
+builder.Services.AddRazorPages();
+builder.Services.AddOpenApi();
+builder.Services.AddLogging((ILoggingBuilder b) => b.ClearProviders().AddConsole());
+builder.Services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
+    .AddCookie(options =>
+    {
+        options.LoginPath = "/Auth/Login";
+    });
+
+builder.Services.AddSingleton<LdapAuthenticationService>();
+builder.Services.AddSingleton<PhoneClaimCodeProviderService>();
+builder.Services.AddSingleton<SignalIntegration>();
+builder.Services.AddSingleton<LdapIntegration>();
+builder.Services.AddSingleton<SpotifyApiClient>();
+builder.Services.AddSingleton<PlayListSynchronizer>();
+builder.Services.AddSingleton<SongResolver>();
+
+var app = builder.Build();
+
+var logger = app.Logger;
+
+logger.LogTrace("Setting up user check timer");
+var userCheckTimer = new CronTimer(AppConfiguration.Instance.UserCheckTimerSchedule, "Europe/Vienna", includingSeconds: false);
 userCheckTimer.OnOccurence += async (s, ea) =>
 {
-    var memberList = await SignalIntegration.Instance.GetMemberListAsync();
+    var signalIntegration = app.Services.GetService<SignalIntegration>();
+    var memberList = await signalIntegration.GetMemberListAsync();
     var dci = DataContext.Instance;
     var needsSaving = false;
     foreach (var memberId in memberList)
@@ -30,10 +44,10 @@ userCheckTimer.OnOccurence += async (s, ea) =>
         var foundUser = dci.Users?.Where(u => u.SignalMemberId == memberId).SingleOrDefault();
         if (foundUser == null)
         {
-            var newUserContact = await SignalIntegration.Instance.GetContactAsync(memberId);
-            Console.WriteLine("New user:");
-            Console.WriteLine($"   Name: {newUserContact.Name}");
-            Console.WriteLine($"   MemberId: {memberId}");
+            var newUserContact = await signalIntegration.GetContactAsync(memberId);
+            logger.LogDebug("New user:");
+            logger.LogDebug($"   Name: {newUserContact.Name}");
+            logger.LogDebug($"   MemberId: {memberId}");
             User newUser = new User()
             {
                 Name = newUserContact.Name,
@@ -43,6 +57,7 @@ userCheckTimer.OnOccurence += async (s, ea) =>
                 LdapUserName = string.Empty,
                 AssociationInProgress = false,
                 WasChosenForSuggestionThisRound = false,
+                LikedSongs = new List<Song>()
             };
             dci.Users?.Add(newUser);
             needsSaving = true;
@@ -55,10 +70,49 @@ userCheckTimer.OnOccurence += async (s, ea) =>
     }
     await dci.DisposeAsync();
 };
-userCheckTimer.Start();
 
-Console.WriteLine("Setting up user intro timer");
-var userIntroTimer = new CronTimer("*/1 * * * *", "Europe/Vienna", includingSeconds: false);
+logger.LogTrace("Setting up liked songs playlist creation timer");
+var likePlaylistCheckTimer = new CronTimer(AppConfiguration.Instance.LikePlaylistCheckTimerSchedule, "Europe/Vienna", includingSeconds: false);
+likePlaylistCheckTimer.OnOccurence += async (s, ea) =>
+{
+    var spotifyApiClient = app.Services.GetService<SpotifyApiClient>();
+    var playlistSynchronizer = app.Services.GetService<PlayListSynchronizer>();
+    var dci = DataContext.Instance;
+    var needsSaving = false;
+    var allUsers = dci.Users.ToList();
+    await dci.DisposeAsync();
+    dci = DataContext.Instance;
+    foreach (var user in allUsers)
+    {
+        if (!await spotifyApiClient.IsUserAuthenticatedAsync(user))
+        {
+            logger.LogWarning($"User {user.LdapUserName} is not authorized with Spotify - skipping playlist sync");
+            continue;
+        }
+        var foundPlaylist = dci.SmartPlaylistDefinitions?.Where(p => p.CreatedBy == user).ToList().Where(p => p.IsThisUsersLikedSongsPlaylist).SingleOrDefault();
+        if (foundPlaylist == null)
+        {
+            logger.LogWarning($"Creating liked songs playlist for user {user.LdapUserName}");
+            var title = $"{user.PreferredName}'s liked songs";
+            var description = $"A collection of the songs liked by {user.PreferredName} on their 'Song of the day' server instance.";
+            // playlist does not exist yet, creating it
+            var newPlaylist = await (await spotifyApiClient.WithUserAuthorizationAsync(user)).CreateSpotifyPlaylist(title, description, false, true, user);
+            await playlistSynchronizer.SynchronizePlaylistAsync(newPlaylist);
+            needsSaving = true;
+        }
+        logger.LogWarning($"Syncing playlists for user {user.LdapUserName}");
+        await playlistSynchronizer.SynchronizeUserPlaylistsAsync(user);
+    }
+
+    if (needsSaving)
+    {
+        await dci.SaveChangesAsync();
+    }
+    await dci.DisposeAsync();
+};
+
+logger.LogTrace("Setting up user intro timer");
+var userIntroTimer = new CronTimer(AppConfiguration.Instance.UserIntroCheckTimerSchedule, "Europe/Vienna", includingSeconds: false);
 userIntroTimer.OnOccurence += async (s, ea) =>
 {
     var dci = DataContext.Instance;
@@ -72,7 +126,8 @@ userIntroTimer.OnOccurence += async (s, ea) =>
     bool needsSaving = false;
     foreach (var user in introUsers)
     {
-        await SignalIntegration.Instance.IntroduceUserAsync(user);
+        var signalIntegration = app.Services.GetService<SignalIntegration>();
+        await signalIntegration.IntroduceUserAsync(user);
         user.IsIntroduced = true;
         needsSaving = true;
     }
@@ -83,43 +138,42 @@ userIntroTimer.OnOccurence += async (s, ea) =>
     }
     await dci.DisposeAsync();
 };
-userIntroTimer.Start();
 
 
-Console.WriteLine("Setting up pick of the day timer");
-var pickOfTheDayTimer = new CronTimer("0 8 * * *", "Europe/Vienna", includingSeconds: false);
+logger.LogTrace("Setting up pick of the day timer");
+var pickOfTheDayTimer = new CronTimer(AppConfiguration.Instance.PickOfTheDayCheckTimerSchedule, "Europe/Vienna", includingSeconds: false);
 pickOfTheDayTimer.OnOccurence += async (s, ea) =>
 {
     var dci = DataContext.Instance;
 
-    var lastSong = dci.SongSuggestions?.LastOrDefault();
+    var lastSong = dci.SongSuggestions?.OrderBy(s => s.Id).LastOrDefault();
 
-    if (lastSong != null && lastSong.Date >= DateTime.Today.Subtract(TimeSpan.FromDays(AppConfiguration.Instance.DaysBetweenRequests)))
+    if (lastSong != null && lastSong.Date > DateTime.Today.Subtract(TimeSpan.FromDays(AppConfiguration.Instance.DaysBetweenRequests)))
     {
-        Console.WriteLine("Skipping pick of the day today!");
+        logger.LogWarning("Skipping pick of the day today!");
         await dci.DisposeAsync();
         return;
     }
 
     if (dci.Users == null || dci.SuggestionHelpers == null || dci.SongSuggestions == null)
     {
-        Console.WriteLine("Unable to properly initialize DB context!");
+        logger.LogError("Unable to properly initialize DB context!");
         await dci.DisposeAsync();
         return;
     }
     var potentialUsers = dci.Users.Where(u => !u.WasChosenForSuggestionThisRound);
     if (!potentialUsers.Any())
     {
-        Console.WriteLine("Resetting suggestion count on users before resuming");
+        logger.LogTrace("Resetting suggestion count on users before resuming");
         await dci.Users.ForEachAsync(u => u.WasChosenForSuggestionThisRound = false);
         await dci.SaveChangesAsync();
         potentialUsers = dci.Users.Where(u => !u.WasChosenForSuggestionThisRound);
     }
-    Console.WriteLine("Today's pool of pickable users is: " + string.Join(", ", potentialUsers.Select(u => u.Name)));
+    logger.LogDebug("Today's pool of pickable users is: " + string.Join(", ", potentialUsers.Select(u => u.Name)));
     var luckyUser = potentialUsers.ElementAt((new Random()).Next(potentialUsers.Count()));
     if (luckyUser == null)
     {
-        Console.WriteLine("Unable to determine today's lucky user!");
+        logger.LogError("Unable to determine today's lucky user!");
         await dci.DisposeAsync();
         return;
     }
@@ -131,41 +185,43 @@ pickOfTheDayTimer.OnOccurence += async (s, ea) =>
         SuggestionHelper = suggestion,
         UserHasSubmitted = false,
         HasUsedSuggestion = false,
-        Date = DateTime.Today
+        Date = DateTime.Today.ToUniversalTime()
     };
     if (luckyUser.SignalMemberId is string signalId)
     {
-        await dci.SongSuggestions.AddAsync(newSongSuggestion);
+        var result = await dci.SongSuggestions.AddAsync(newSongSuggestion);
+        newSongSuggestion = result.Entity;
+        luckyUser.WasChosenForSuggestionThisRound = true;
         await dci.SaveChangesAsync();
-        await SignalIntegration.Instance.SendMessageToGroupAsync($"Today's chosen person to share a song is: **{userName}**");
-        await SignalIntegration.Instance.SendMessageToGroupAsync($"Today's (optional) suggestion helper to help you pick a song is:\n\n**{suggestion.Title}**\n\n*{suggestion.Description}*");
-        await SignalIntegration.Instance.SendMessageToUserAsync($"Congratulations, you have been chosen to share a song today!", signalId);
-        await SignalIntegration.Instance.SendMessageToUserAsync($"Today's (optional) suggestion helper to help you pick a song is:\n\n**{suggestion.Title}**\n\n*{suggestion.Description}*", signalId);
-        await SignalIntegration.Instance.SendMessageToUserAsync($"For now please just share your suggestion with the group - in the future I might ask you to share directly with me or via the website to help me keep track of past suggestions!", luckyUser.SignalMemberId);
+        var signalIntegration = app.Services.GetService<SignalIntegration>();
+        await signalIntegration.SendMessageToGroupAsync($"Today's chosen person to share a song is: **{userName}**");
+        await signalIntegration.SendMessageToUserAsync($"Congratulations, you have been chosen to share a song today!", signalId);
+        await signalIntegration.SendMessageToUserAsync($"Today's (optional) suggestion helper to help you pick a song is:\n\n**{suggestion.Title}**\n\n*{suggestion.Description}*", signalId);
+        await signalIntegration.SendMessageToUserAsync($"Please navigate to https://sotd.disi.dev/SongSubmission/{newSongSuggestion.Id} to submit your choice!", luckyUser.SignalMemberId);
     }
     await dci.DisposeAsync();
 };
-pickOfTheDayTimer.Start();
 
 var startUserAssociationProcess = async (User userToAssociate) =>
 {
     if (userToAssociate.SignalMemberId is string signalId)
     {
-        await SignalIntegration.Instance.SendMessageToUserAsync($"Hi, I see you are not associated with any website user yet.", signalId);
-        await SignalIntegration.Instance.SendMessageToUserAsync($"If you haven't yet, please navigate to https://users.disi.dev to create a new account.", signalId);
-        await SignalIntegration.Instance.SendMessageToUserAsync($"Once you have done so, go to https://sotd.disi.dev, login, navigate to \"Unclaimed Phone Numbers\" and click on the \"Claim\" button to start the claim process.", signalId);
-        await SignalIntegration.Instance.SendMessageToUserAsync($"With a future update you will be required to submit songs via your user account - at that point you will be skipped during the selection process if you have not yet claimed your phone number!", signalId);
+        var signalIntegration = app.Services.GetService<SignalIntegration>();
+        await signalIntegration.SendMessageToUserAsync($"Hi, I see you are not associated with any website user yet.", signalId);
+        await signalIntegration.SendMessageToUserAsync($"If you haven't yet, please navigate to https://users.disi.dev to create a new account.", signalId);
+        await signalIntegration.SendMessageToUserAsync($"Once you have done so, go to https://sotd.disi.dev, login, navigate to \"Unclaimed Phone Numbers\" and click on the \"Claim\" button to start the claim process.", signalId);
+        await signalIntegration.SendMessageToUserAsync($"With a future update you will be required to submit songs via your user account - at that point you will be skipped during the selection process if you have not yet claimed your phone number!", signalId);
     }
-};
+};    
 
-Console.WriteLine("Setting up LdapAssociation timer");
-var ldapAssociationTimer = new CronTimer("*/10 * * * *", "Europe/Vienna", includingSeconds: false);
+logger.LogTrace("Setting up LdapAssociation timer");
+var ldapAssociationTimer = new CronTimer(AppConfiguration.Instance.LdapAssociationTimerSchedule, "Europe/Vienna", includingSeconds: false);
 ldapAssociationTimer.OnOccurence += async (s, ea) =>
 {
     var dci = DataContext.Instance;
     if (dci.Users == null)
     {
-        Console.WriteLine("Unable to properly initialize DB context!");
+        logger.LogError("Unable to properly initialize DB context!");
         await dci.DisposeAsync();
         return;
     }
@@ -186,27 +242,32 @@ ldapAssociationTimer.OnOccurence += async (s, ea) =>
     }
     await dci.DisposeAsync();
 };
-ldapAssociationTimer.Start();
 
-var searchResults = LdapIntegration.Instance.SearchInAD(
-    AppConfiguration.Instance.LDAPConfig.LDAPQueryBase,
-    $"(memberOf={AppConfiguration.Instance.LDAPConfig.CrewGroup})",
-    SearchScope.Subtree
-);
+logger.LogTrace("Setting up MessageSync timer");
+var messageSyncTimer = new CronTimer(AppConfiguration.Instance.MessageSyncTimerSchedule, "Europe/Vienna", includingSeconds: false);
+messageSyncTimer.OnOccurence += async (s, ea) =>
+{
+    var signalIntegration = app.Services.GetService<SignalIntegration>();
+    await signalIntegration.GetMessagesAsync();
+};
+// disabled for now, is still buggy
+// messageSyncTimer.Start();
 
-// Add services to the container.
-builder.Services.AddRazorPages();
-builder.Services.AddOpenApi();
-builder.Services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
-    .AddCookie(options =>
-    {
-        options.LoginPath = "/Auth/Login";
-    });
-
-builder.Services.AddSingleton<LdapAuthenticationService>();
-builder.Services.AddSingleton<PhoneClaimCodeProviderService>();
-
-var app = builder.Build();
+// only start interaction timers in production builds
+// for local/development testing we want those disabled
+    likePlaylistCheckTimer.Start();
+if (!app.Environment.IsDevelopment())
+{
+    logger.LogTrace("Starting timer for scheduled processes.");
+    userCheckTimer.Start();
+    userIntroTimer.Start();
+    pickOfTheDayTimer.Start();
+    ldapAssociationTimer.Start();
+}
+else
+{
+    logger.LogTrace("This is a debug build - scheduled processes are disabled.");
+}
 
 // Configure the HTTP request pipeline.
 if (!app.Environment.IsDevelopment())
@@ -234,6 +295,27 @@ app.MapControllerRoute(
     name: "logout",
     pattern: "{controller=Auth}/{action=Logout}"
 );
+app.MapGet("SpotifyLogin", async (HttpRequest request, HttpResponse response) =>
+{
+    var spotifyClient = app.Services.GetService<SpotifyApiClient>();
+    var code = request.Query["code"];
+    var oAuthResponse = await new OAuthClient().RequestToken(
+        new AuthorizationCodeTokenRequest(AppConfiguration.Instance.SpotifyClientId, AppConfiguration.Instance.SpotifyClientSecret, code, new Uri(spotifyClient.GetLoginRedirectUri()))
+    );
+
+    var dci = DataContext.Instance;
+    var userName = request.HttpContext.User.Identity.Name;
+    var loggedInUser = dci.Users.Where(u => u.LdapUserName == userName).SingleOrDefault();
+    var userId = loggedInUser.UserId;
+    loggedInUser.SpotifyAuthAccessToken = oAuthResponse.AccessToken;
+    loggedInUser.SpotifyAuthExpiresAfterSeconds = oAuthResponse.ExpiresIn;
+    loggedInUser.SpotifyAuthCreatedAt = oAuthResponse.CreatedAt;
+    loggedInUser.SpotifyAuthRefreshToken = oAuthResponse.RefreshToken;
+    await dci.SaveChangesAsync();
+    dci.Dispose();
+
+    response.Redirect($"/User/{userId}");
+});
 app.MapGet("/debug/routes", (IEnumerable<EndpointDataSource> endpointSources) =>
         string.Join("\n", endpointSources.SelectMany(source => source.Endpoints)));
 

song_of_the_day/SongValidators/Base64UrlImageBuilder.cs

@@ -0,0 +1,31 @@
+public class Base64UrlImageBuilder
+{
+    public required string ContentType { set; get; }
+
+    public string Url
+    {
+        set
+        {
+            var httpClient = new HttpClient();
+            var response = (httpClient.GetAsync(new Uri($"{value}"))).Result;
+            var bytes = (response.Content.ReadAsByteArrayAsync()).Result;
+            _fileContents = Convert.ToBase64String(bytes);
+        }
+    }
+
+    private string _fileContents = string.Empty;
+
+    public string FileContents
+    {
+        get
+        {
+            return _fileContents;
+        }
+    }
+
+    public override string ToString()
+    {
+        //return $"data:{ContentType};base64,{FileContents}";
+        return $"{FileContents}";
+    }
+}

song_of_the_day/SongValidators/ISongValidator.cs

@@ -0,0 +1,10 @@
+public interface ISongValidator
+{
+    Task<Song> ValidateAsync(Uri songUri);
+
+    Task<bool> CanValidateUriAsync(Uri songUri);
+
+    Task<bool> CanExtractSongMetadataAsync(Uri songUri);
+
+    SongProvider GetSongProvider();
+}

song_of_the_day/SongValidators/NavidromeValidator.cs

@@ -0,0 +1,121 @@
+using System.Threading.Tasks;
+using AngleSharp;
+using AngleSharp.Dom;
+using AngleSharp.Html.Dom;
+using YouTubeMusicAPI.Client;
+using System.Text.Json;
+using Acornima.Ast;
+using AngleSharp.Text;
+using System.Text.RegularExpressions;
+using System.Text.Json.Serialization;
+
+public class NavidromeValidator : SongValidatorBase
+{
+    private YouTubeMusicClient youtubeClient;
+
+    public NavidromeValidator(ILogger logger, SpotifyApiClient spotifyApiClient) : base(logger, spotifyApiClient)
+    {
+        youtubeClient = new("AT");
+    }
+
+    public override async Task<bool> CanValidateUriAsync(Uri songUri)
+    {
+        // Check if behind this URL there is a public navidrome share
+        var config = Configuration.Default.WithDefaultLoader();
+        var address = songUri.ToString();
+        var context = BrowsingContext.New(config);
+        var document = await context.OpenAsync(address);
+        var titleCell = (document.DocumentElement.GetDescendants().First() as HtmlElement)
+                                                .GetElementsByTagName("title").First();
+        return "Navidrome".Equals(titleCell.TextContent);
+    }
+
+    public override async Task<bool> CanExtractSongMetadataAsync(Uri songUri)
+    {
+        return await this.CanValidateUriAsync(songUri);
+    }
+
+    public override SongProvider GetSongProvider()
+    {
+        return SongProvider.NavidromeSharedLink;
+    }
+
+    private static Stream GenerateStreamFromString(string s)
+    {
+        var stream = new MemoryStream();
+        var writer = new StreamWriter(stream);
+        writer.Write(s);
+        writer.Flush();
+        stream.Position = 0;
+        return stream;
+    }
+
+    public override async Task<Song> ValidateAsync(Uri songUri)
+    {
+        var config = Configuration.Default.WithDefaultLoader();
+        var address = songUri.ToString();
+        var context = BrowsingContext.New(config);
+        var document = await context.OpenAsync(address);
+        var infoScriptNode = document.GetElementsByTagName("script").Where(e => e.TextContent.Contains("__SHARE_INFO__")).First();
+        var manipulatedValue = infoScriptNode.TextContent.Replace("window.__SHARE_INFO__ = \"", "").StripLeadingTrailingSpaces().StripLineBreaks();
+        manipulatedValue = manipulatedValue.Remove(manipulatedValue.Length - 1);
+        var infoScriptJsonData = Regex.Unescape(Regex.Unescape(manipulatedValue));
+
+        var title = string.Empty;
+        var artist = string.Empty;
+
+        using (var stream = GenerateStreamFromString(infoScriptJsonData))
+        {
+            var jsonContent = await JsonSerializer.DeserializeAsync<NavidromeShareInfoData>(stream);
+            title = jsonContent.Tracks[0].Title;
+            artist = jsonContent.Tracks[0].Artist;
+        }
+
+        var song = new Song
+        {
+            Name = title,
+            Artist = artist,
+            Url = songUri.ToString(),
+            Provider = SongProvider.NavidromeSharedLink,
+            SpotifyId = await this.LookupSpotifyIdAsync(title, artist)
+        };
+
+        return song;
+    }
+}
+
+public class NavidromeShareInfoData
+{
+    [JsonPropertyName("id")]
+    public required string Id { get; set; }
+
+    [JsonPropertyName("description")]
+    public required string Description { get; set; }
+
+    [JsonPropertyName("downloadable")]
+    public bool Downloadable { get; set; }
+
+    [JsonPropertyName("tracks")]
+    public required List<NavidromeTrackInfoData> Tracks { get; set; }
+}
+
+public class NavidromeTrackInfoData
+{
+    [JsonPropertyName("id")]
+    public required string Id { get; set; }
+
+    [JsonPropertyName("title")]
+    public required string Title { get; set; }
+
+    [JsonPropertyName("artist")]
+    public required string Artist { get; set; }
+
+    [JsonPropertyName("album")]
+    public required string Album { get; set; }
+
+    [JsonPropertyName("updatedAt")]
+    public DateTime UpdatedAt { get; set; }
+
+    [JsonPropertyName("duration")]
+    public float Duration { get; set; }
+}

song_of_the_day/SongValidators/SongResolver.cs

@@ -0,0 +1,85 @@
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using SpotifyAPI.Web;
+
+public class SongResolver
+{
+    private readonly IEnumerable<ISongValidator> _songValidators;
+
+    private readonly ILogger<SongResolver> logger;
+
+    private SpotifyApiClient spotifyApiClient;
+
+    public SongResolver(ILogger<SongResolver> logger, ILoggerFactory loggerFactory, SpotifyApiClient spotifyApiClient)
+    {
+        this.logger = logger;
+
+        this._songValidators = new List<ISongValidator>();
+        this.spotifyApiClient = spotifyApiClient;
+
+        foreach (Type mytype in System.Reflection.Assembly.GetExecutingAssembly().GetTypes()
+                 .Where(mytype => { return (mytype.GetInterfaces().Contains(typeof(ISongValidator)) && !(mytype.Name.Split("`")[0].EndsWith("Base"))); }))
+        {
+            var typedLogger = loggerFactory.CreateLogger(mytype);
+            if (Activator.CreateInstance(mytype, typedLogger, spotifyApiClient) is ISongValidator validator)
+            {
+                logger.LogDebug("Registering song validator: {ValidatorType}", mytype.Name);
+                this._songValidators = this._songValidators.Append(validator);
+            }
+        }
+    }
+
+    public async Task<Song> ResolveSongAsync(Uri songUri)
+    {
+        foreach (var validator in _songValidators)
+        {
+            if (await validator.CanValidateUriAsync(songUri))
+            {
+                if (!await validator.CanExtractSongMetadataAsync(songUri))
+                {
+                    this.logger.LogWarning("Cannot extract metadata for song URI: {SongUri}", songUri);
+                    return new Song
+                    {
+                        Artist = "Unknown Artist",
+                        Name = "Unknown Title",
+                        Url = songUri.ToString(),
+                        Provider = SongProvider.PlainHttp,
+                    };
+                }
+                return await validator.ValidateAsync(songUri);
+            }
+        }
+
+        return new Song
+        {
+            Artist = "Unknown Artist",
+            Name = "Unknown Title",
+            Url = songUri.ToString(),
+            Provider = SongProvider.PlainHttp,
+        };
+    }
+
+    public bool CanValidate(Uri songUri)
+    {
+        foreach (var validator in _songValidators)
+        {
+            if (validator.CanValidateUriAsync(songUri).Result)
+            {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public async Task<Base64UrlImageBuilder> GetPreviewImageAsync(string spotifyId)
+    {
+        var track = await spotifyApiClient.GetTrackByIdAsync(spotifyId);
+        var url = track.Album.Images.FirstOrDefault().Url;
+        return new Base64UrlImageBuilder()
+        {
+            Url = url,
+            ContentType = "image/jpeg"
+        };
+    }
+}

song_of_the_day/SongValidators/SongValidatorBase.cs

@@ -0,0 +1,30 @@
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+
+public abstract class SongValidatorBase : ISongValidator
+{
+    public abstract Task<Song> ValidateAsync(Uri songUri);
+
+    public abstract Task<bool> CanExtractSongMetadataAsync(Uri songUri);
+
+    public abstract Task<bool> CanValidateUriAsync(Uri songUri);
+
+    public abstract SongProvider GetSongProvider();
+
+    protected SpotifyApiClient _spotifyApiClient;
+
+    protected ILogger _logger;
+
+    public SongValidatorBase(ILogger logger, SpotifyApiClient spotifyApiClient)
+    {
+        _spotifyApiClient = spotifyApiClient;
+        _logger = logger;
+
+    }
+
+    protected async Task<string> LookupSpotifyIdAsync(string songName, string songArtist)
+    {
+        var candidates = await _spotifyApiClient.GetTrackCandidatesAsync(songName, songArtist);
+        return candidates.Any() ? candidates[0].Id : "";
+    }
+}

song_of_the_day/SongValidators/SpotifyValidator.cs

@@ -0,0 +1,41 @@
+using System.Text.RegularExpressions;
+using AngleSharp;
+using AngleSharp.Dom;
+using AngleSharp.Html.Dom;
+
+public class SpotifyValidator : UriBasedSongValidatorBase
+{
+    public override string UriValidatorRegex => @"^(https?://)?open.spotify.com/track/([a-zA-Z0-9_-]{22})(\?si=[a-zA-Z0-9_-]+)?$";
+
+    public SpotifyValidator(ILogger _logger, SpotifyApiClient spotifyApiClient) : base(_logger, spotifyApiClient)
+    { }
+
+    public override async Task<bool> CanExtractSongMetadataAsync(Uri songUri)
+    {
+        return await this.CanValidateUriAsync(songUri);
+    }
+
+    public override SongProvider GetSongProvider()
+    {
+        return SongProvider.Spotify;
+    }
+
+    public override async Task<Song> ValidateAsync(Uri songUri)
+    {
+        var regexp = new Regex(UriValidatorRegex, RegexOptions.IgnoreCase);
+        var trackIdMatch = regexp.Match(songUri.ToString()).Groups[2].Value;
+
+        var track = await _spotifyApiClient.GetTrackByIdAsync(trackIdMatch);
+
+        var song = new Song
+        {
+            Name = track.Name,
+            Artist = track.Artists.FirstOrDefault()?.Name ?? "Unknown Artist",
+            Url = songUri.ToString(),
+            Provider = SongProvider.Spotify,
+            SpotifyId = trackIdMatch
+        };
+
+        return song;
+    }
+}

song_of_the_day/SongValidators/UriBasedSongValidatorBase.cs

@@ -0,0 +1,24 @@
+using System.Text.RegularExpressions;
+
+public abstract class UriBasedSongValidatorBase : SongValidatorBase
+{
+    public abstract string UriValidatorRegex { get; }
+
+    public UriBasedSongValidatorBase(ILogger logger, SpotifyApiClient spotifyApiClient) : base(logger, spotifyApiClient)
+    { }
+
+    public Match GetUriMatch(Uri songUri)
+    {
+        var regexp = new Regex(UriValidatorRegex, RegexOptions.IgnoreCase);
+        return regexp.Match(songUri.ToString());
+    }
+
+    public override async Task<bool> CanValidateUriAsync(Uri songUri)
+    {
+        var result = await Task.Run(() =>
+        {
+            return GetUriMatch(songUri).Success;
+        });
+        return result;
+    }
+}

song_of_the_day/SongValidators/YoutubeMusicValidator.cs

@@ -0,0 +1,48 @@
+using AngleSharp;
+using AngleSharp.Dom;
+using YouTubeMusicAPI.Client;
+
+public class YoutubeMusicValidator : UriBasedSongValidatorBase
+{
+    public override string UriValidatorRegex => @"^(https?://)?(music\.youtube\.com/playlist\?list=)([a-zA-Z0-9_-]+)";
+
+    private YouTubeMusicClient youtubeClient;
+
+    public YoutubeMusicValidator(ILogger logger, SpotifyApiClient spotifyApiClient) : base(logger, spotifyApiClient)
+    {
+        youtubeClient = new YouTubeMusicClient(logger, "AT", null, null, null);
+    }
+
+    public override SongProvider GetSongProvider()
+    {
+        return SongProvider.YoutubeMusic;
+    }
+
+    public override async Task<bool> CanExtractSongMetadataAsync(Uri songUri)
+    {
+        return await this.CanValidateUriAsync(songUri);
+    }
+
+    public override async Task<Song> ValidateAsync(Uri songUri)
+    {
+        var match = this.GetUriMatch(songUri);
+        var playlistId = match.Groups[3].Value;
+
+        var playlistResult = await youtubeClient.GetCommunityPlaylistInfoAsync(playlistId);
+        var songData = playlistResult.Songs[0];
+
+        var title = songData.Name;
+        var artist = songData.Artists[0].Name;
+
+        var song = new Song
+        {
+            Name = title,
+            Artist = artist,
+            Url = songUri.ToString(),
+            Provider = SongProvider.YoutubeMusic,
+            SpotifyId = await this.LookupSpotifyIdAsync(title, artist)
+        };
+
+        return song;
+    }
+}

song_of_the_day/SongValidators/YoutubeValidator.cs

@@ -0,0 +1,48 @@
+using AngleSharp;
+using AngleSharp.Dom;
+using AngleSharp.Html.Dom;
+using YouTubeMusicAPI.Client;
+
+public class YoutubeValidator : UriBasedSongValidatorBase
+{
+    private YouTubeMusicClient youtubeClient;
+
+    public YoutubeValidator(ILogger logger, SpotifyApiClient spotifyApiClient) : base(logger, spotifyApiClient)
+    {
+        youtubeClient = new("AT");
+    }
+
+    public override string UriValidatorRegex => @"^(https?://)?(www\.)?(youtube\.com/watch\?v=|youtu\.be/)([a-zA-Z0-9_-]{11})";
+
+    public override async Task<bool> CanExtractSongMetadataAsync(Uri songUri)
+    {
+        return await this.CanValidateUriAsync(songUri);
+    }
+
+    public override SongProvider GetSongProvider()
+    {
+        return SongProvider.YouTube;
+    }
+
+    public override async Task<Song> ValidateAsync(Uri songUri)
+    {
+        var match = this.GetUriMatch(songUri);
+        var songId = match.Groups[4].Value;
+
+        var songData = await youtubeClient.GetSongVideoInfoAsync(songId);
+
+        var title = songData.Name;
+        var artist = songData.Artists[0].Name;
+
+        var song = new Song
+        {
+            Name = title,
+            Artist = artist,
+            Url = songUri.ToString(),
+            Provider = SongProvider.YouTube,
+            SpotifyId = await this.LookupSpotifyIdAsync(title, artist)
+        };
+
+        return song;
+    }
+}

song_of_the_day/SpotifyIntegration/PlayListSynchronizer.cs

@@ -0,0 +1,65 @@
+using Microsoft.EntityFrameworkCore;
+
+public class PlayListSynchronizer
+{
+    private SpotifyApiClient _spotifyAPIClient;
+
+    public PlayListSynchronizer(SpotifyApiClient spotifyAPIClient)
+    {
+        _spotifyAPIClient = spotifyAPIClient;
+    }
+
+    public async Task SynchronizePlaylistAsync(SmartPlaylistDefinition playlist)
+    {
+        var songsToInclude = new List<Song>();
+        using (var dci = DataContext.Instance)
+        {
+            songsToInclude.AddRange(dci.SongSuggestions.Where(ss => ss.HasUsedSuggestion && playlist.Categories.Contains(ss.SuggestionHelper) && !songsToInclude.Contains(ss.Song)).Select(ss => ss.Song));
+            songsToInclude.AddRange(playlist.ExplicitlyIncludedSongs.Where(ss => !songsToInclude.Contains(ss)));
+            if (playlist.IncludesUnCategorizedSongs)
+            {
+                songsToInclude.AddRange(dci.SongSuggestions.Where(ss => !ss.HasUsedSuggestion && !songsToInclude.Contains(ss.Song)).Select(ss => ss.Song));
+            }
+            if (playlist.IncludesLikedSongs)
+            {
+                var userWithLikes = dci.Users.Include(u => u.LikedSongs).Where(u => u.UserId == playlist.CreatedBy.UserId).SingleOrDefault();
+                var likedSongs = userWithLikes.LikedSongs;
+                songsToInclude.AddRange(likedSongs.Where(s => !songsToInclude.Contains(s)));
+            }
+        }
+        songsToInclude.RemoveAll(song => playlist.ExplicitlyExcludedSongs.Contains(song));
+        var spotifyIdsToInclude = songsToInclude.Select(s => s.SpotifyId);
+
+        var apiClient = await _spotifyAPIClient.WithUserAuthorizationAsync(playlist.CreatedBy);
+
+        var songsAlreadyInPlaylist = await apiClient.GetSongsInPlaylist(playlist.SpotifyPlaylistId);
+
+        var songsToAdd = spotifyIdsToInclude.Where(sti => !songsAlreadyInPlaylist.Contains(sti)).ToList();
+        var songsToRemove = songsAlreadyInPlaylist.Where(sai => !spotifyIdsToInclude.Contains(sai)).ToList();
+
+        apiClient.AddSongsToPlaylist(playlist.SpotifyPlaylistId, songsToAdd);
+        apiClient.RemoveSongsFromPlaylist(playlist.SpotifyPlaylistId, songsToRemove);
+    }
+
+    public async Task SynchronizePlaylistsAsync(IList<SmartPlaylistDefinition> playlists)
+    {
+        foreach (var playlist in playlists)
+        {
+            await SynchronizePlaylistAsync(playlist);
+        }
+    }
+
+    public async Task SynchronizeUserPlaylistsAsync(User user)
+    {
+        using (var dci = DataContext.Instance)
+        {
+            var userPlayLists = dci.SmartPlaylistDefinitions
+                .Include(pl => pl.ExplicitlyIncludedSongs)
+                .Include(pl => pl.ExplicitlyExcludedSongs)
+                .Include(pl => pl.Categories)
+                .Include(pl => pl.CreatedBy)
+                .Where(pl => pl.CreatedBy == user).ToList();
+            await SynchronizePlaylistsAsync(userPlayLists);
+        }
+    }
+}

song_of_the_day/SpotifyIntegration/SpotifyApiClient.cs

@@ -0,0 +1,290 @@
+using SpotifyAPI.Web;
+using System.Web;
+using Microsoft.EntityFrameworkCore;
+
+public class SpotifyApiClient
+{
+    private SpotifyClient _spotifyClient;
+    private SpotifyClient? _userAuthorizedSpotifyClient;
+    private ILogger<SpotifyApiClient> _logger;
+
+    public SpotifyApiClient(ILogger<SpotifyApiClient> logger)
+    {
+        var config = SpotifyClientConfig.CreateDefault()
+            .WithAuthenticator(new ClientCredentialsAuthenticator(
+                AppConfiguration.Instance.SpotifyClientId,
+                AppConfiguration.Instance.SpotifyClientSecret));
+
+        _spotifyClient = new SpotifyClient(config);
+        _userAuthorizedSpotifyClient = null;
+        _logger = logger;
+    }
+
+    public async Task<SpotifyApiClient> WithUserAuthorizationAsync(User user)
+    {
+        var refreshResponse = await new OAuthClient().RequestToken(
+            new AuthorizationCodeRefreshRequest(
+                            AppConfiguration.Instance.SpotifyClientId,
+                            AppConfiguration.Instance.SpotifyClientSecret,
+                            user.SpotifyAuthRefreshToken)
+        );
+        var config = SpotifyClientConfig
+            .CreateDefault()
+            .WithAuthenticator(new AuthorizationCodeAuthenticator(
+                            AppConfiguration.Instance.SpotifyClientId,
+                            AppConfiguration.Instance.SpotifyClientSecret,
+                            new AuthorizationCodeTokenResponse()
+                            {
+                                RefreshToken = refreshResponse.RefreshToken,
+                                AccessToken = refreshResponse.AccessToken,
+                                TokenType = refreshResponse.TokenType,
+                                ExpiresIn = refreshResponse.ExpiresIn,
+                                Scope = refreshResponse.Scope,
+                                CreatedAt = refreshResponse.CreatedAt
+                            }));
+
+        _userAuthorizedSpotifyClient = new SpotifyClient(config);
+        return this;
+    }
+
+    private SpotifyClient UserAuthorizedSpotifyClient
+    {
+        get
+        {
+            if (_userAuthorizedSpotifyClient == null)
+            {
+                throw new Exception("Cannot perform Spotify API call without user authorization. Authorize Spotify access from your user page first!");
+            }
+            return _userAuthorizedSpotifyClient;
+        }
+    }
+
+    public async Task<List<FullTrack>> GetTrackCandidatesAsync(string trackName, string artistName)
+    {
+        try
+        {
+            var searchResponse = await _spotifyClient.Search.Item(new SearchRequest(SearchRequest.Types.Track, $"{trackName} {artistName}")
+            {
+                Limit = 5
+            });
+            return searchResponse.Tracks.Items ?? new List<FullTrack>();
+        }
+        catch (APIException ex)
+        {
+            throw new Exception($"Error fetching tracks by query: \"{trackName} {artistName}\": {ex.Message}", ex);
+        }
+    }
+
+    public string GetLoginRedirectUri()
+    {
+        return AppConfiguration.Instance.WebUIBaseURL + (AppConfiguration.Instance.WebUIBaseURL.EndsWith("/") ? "SpotifyLogin" : "/SpotifyLogin");
+    }
+
+    private bool IsAuthTokenExpired(User user)
+    {
+        if (user.SpotifyAuthCreatedAt == null || user.SpotifyAuthExpiresAfterSeconds == null)
+        {
+            return true;
+        }
+        var expirationdate = user.SpotifyAuthCreatedAt.Value.AddSeconds(user.SpotifyAuthExpiresAfterSeconds.Value);
+        return expirationdate < DateTime.UtcNow;
+    }
+
+    public async Task DeAuthorizeUserAsync(User user)
+    {
+        using (var dci = DataContext.Instance)
+        {
+            var isEntityTracked = dci.Entry(user).State != EntityState.Detached;
+
+            if (!isEntityTracked)
+            {
+                user = dci.Users.Find(user.UserId);
+            }
+            user.SpotifyAuthAccessToken = string.Empty;
+            user.SpotifyAuthRefreshToken = string.Empty;
+            user.SpotifyAuthExpiresAfterSeconds = null;
+            user.SpotifyAuthCreatedAt = null;
+            await dci.SaveChangesAsync();
+        }
+    }
+
+    public async Task<string> GetValidAuthorizationTokenAsync(User user)
+    {
+        if (string.IsNullOrEmpty(user.SpotifyAuthAccessToken) || string.IsNullOrEmpty(user.SpotifyAuthRefreshToken))
+        {
+            // user either never connected Spotify or we failed to refresh token - user needs to re-authenticate
+            return string.Empty;
+        }
+
+        if (!this.IsAuthTokenExpired(user))
+        {
+            return user.SpotifyAuthAccessToken;
+        }
+
+        // if token is expired, attempt a refresh
+        var dci = DataContext.Instance;
+
+        var isEntityTracked = dci.Entry(user).State != EntityState.Detached;
+
+        if (!isEntityTracked)
+        {
+            user = dci.Users.Find(user.UserId);
+        }
+
+        try
+        {
+            var oAuthResponse = await new OAuthClient().RequestToken(
+                new AuthorizationCodeRefreshRequest(AppConfiguration.Instance.SpotifyClientId, AppConfiguration.Instance.SpotifyClientSecret, user.SpotifyAuthRefreshToken)
+            );
+            user.SpotifyAuthAccessToken = oAuthResponse.AccessToken;
+            user.SpotifyAuthExpiresAfterSeconds = oAuthResponse.ExpiresIn;
+            user.SpotifyAuthCreatedAt = oAuthResponse.CreatedAt;
+            user.SpotifyAuthRefreshToken = oAuthResponse.RefreshToken;
+            return user.SpotifyAuthAccessToken;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogWarning($"Failed to refresh SpotifyAuth token for user {user.LdapUserName}: {ex.Message}");
+            await DeAuthorizeUserAsync(user);
+            return string.Empty;
+        }
+        finally
+        {
+            await dci.SaveChangesAsync();
+            dci.Dispose();
+        }
+    }
+
+    public async Task<bool> IsUserAuthenticatedAsync(User user)
+    {
+        return !string.IsNullOrEmpty(await this.GetValidAuthorizationTokenAsync(user));
+    }
+
+    public async Task<FullTrack> GetTrackByIdAsync(string trackId)
+    {
+        try
+        {
+            return await _spotifyClient.Tracks.Get(trackId);
+        }
+        catch (APIException ex)
+        {
+            throw new Exception($"Error fetching track by ID: {trackId}: {ex.Message}", ex);
+        }
+    }
+
+    public async Task<SmartPlaylistDefinition> CreateSpotifyPlaylist(string playlistTitle,
+                                                                    string description,
+                                                                    bool IncludesUnCategorizedSongs,
+                                                                    bool IncludesLikedSongs,
+                                                                    User createdBy)
+    {
+        try
+        {
+            // for now hardcoded with my user ID
+            var playlistCreationRequest = new PlaylistCreateRequest(playlistTitle);
+            playlistCreationRequest.Public = true;
+            playlistCreationRequest.Collaborative = false;
+            playlistCreationRequest.Description = description;
+            var currentUser = await UserAuthorizedSpotifyClient.UserProfile.Current();
+            var playlist = await UserAuthorizedSpotifyClient.Playlists.Create(currentUser.Id, playlistCreationRequest);
+
+            _logger.LogWarning($"Creating new playlist '{playlistTitle}'");
+            using (var dci = DataContext.Instance)
+            {
+                var trackedUserEntity = dci.Users.Find(createdBy.UserId);
+                var newPlaylist = new SmartPlaylistDefinition()
+                {
+                    Title = playlistTitle,
+                    Description = description,
+                    Categories = new List<SuggestionHelper>(),
+                    IncludesLikedSongs = IncludesLikedSongs,
+                    IncludesUnCategorizedSongs = IncludesUnCategorizedSongs,
+                    SpotifyPlaylistId = playlist.Id,
+                    CreatedBy = trackedUserEntity,
+                    ExplicitlyExcludedSongs = new List<Song>(),
+                    ExplicitlyIncludedSongs = new List<Song>()
+                };
+
+                var trackedEntity = dci.SmartPlaylistDefinitions.Add(newPlaylist);
+                await dci.SaveChangesAsync();
+                return trackedEntity.Entity;
+            }
+        }
+        catch (APIException ex)
+        {
+            throw new Exception($"Error creating playlist with title: {playlistTitle}: {ex.Message}", ex);
+        }
+    }
+
+    public async Task<List<string>> GetSongsInPlaylist(string playlistId)
+    {
+        try
+        {
+            // for now hardcoded with my user ID
+            var ids = new List<string>();
+            var firstContentPage = await UserAuthorizedSpotifyClient.Playlists.GetItems(playlistId);
+            var allPages = await UserAuthorizedSpotifyClient.PaginateAll(firstContentPage);
+            ids.AddRange(allPages.Select(track => (track.Track as FullTrack).Id));
+
+            return ids;
+
+        }
+        catch (APIException ex)
+        {
+            throw new Exception($"Error fetching playlist contents for playlist with id: {playlistId}: {ex.Message}", ex);
+        }
+    }
+
+    public async Task<string> AddSongsToPlaylist(string playlistId, List<string> songIds)
+    {
+        if (songIds.Count == 0)
+        {
+            _logger.LogWarning($"No songs to add to playlist with id '{playlistId}'");
+            return string.Empty;
+        }
+        try
+        {
+            // for now hardcoded with my user ID
+            var addItemRequest = new PlaylistAddItemsRequest(songIds.Select(id => $"spotify:track:{id}").ToList());
+            _logger.LogWarning($"Adding songs to playlist with id '{playlistId}'");
+            var response = await UserAuthorizedSpotifyClient.Playlists.AddItems(playlistId, addItemRequest);
+            return response.SnapshotId;
+
+        }
+        catch (APIException ex)
+        {
+            throw new Exception($"Error adding songs to playlist with id: {playlistId}: {ex.Message}", ex);
+        }
+    }
+
+    public async Task<string> RemoveSongsFromPlaylist(string playlistId, List<string> songIds)
+    {
+        if (songIds.Count == 0)
+        {
+            _logger.LogWarning($"No songs to remove from playlist with id '{playlistId}'");
+            return string.Empty;
+        }
+        try
+        {
+            // for now hardcoded with my user ID
+            var removeItemsRequest = new PlaylistRemoveItemsRequest();
+            removeItemsRequest.Tracks = new List<PlaylistRemoveItemsRequest.Item>();
+            foreach (var song in songIds)
+            {
+                var item = new PlaylistRemoveItemsRequest.Item()
+                {
+                    Uri = $"spotify:track:{song}",
+                };
+                removeItemsRequest.Tracks.Add(item);
+            }
+
+            _logger.LogWarning($"Removing songs from playlist with id '{playlistId}'");
+            var response = await UserAuthorizedSpotifyClient.Playlists.RemoveItems(playlistId, removeItemsRequest);
+            return response.SnapshotId;
+        }
+        catch (APIException ex)
+        {
+            throw new Exception($"Error removing songs from playlist with id: {playlistId}: {ex.Message}", ex);
+        }
+    }
+}

song_of_the_day/VERSION

@@ -1 +1 @@
-0.3.1
+0.6.7

song_of_the_day/appsettings.Development.json

@@ -2,8 +2,11 @@
   "DetailedErrors": true,
   "Logging": {
     "LogLevel": {
-      "Default": "Information",
-      "Microsoft.AspNetCore": "Warning"
+      "Default": "Trace",
+      "Microsoft.AspNetCore": "Warning",
+      "SongResolver": "Trace",
+      "SignalIntegration": "Trace",
+      "SongOfTheDay": "Trace"
     }
   }
 }

song_of_the_day/appsettings.json

@@ -1,8 +1,11 @@
 {
   "Logging": {
     "LogLevel": {
-      "Default": "Information",
-      "Microsoft.AspNetCore": "Warning"
+      "Default": "Trace",
+      "Microsoft.AspNetCore": "Warning",
+      "SongResolver": "Information",
+      "SignalIntegration": "Information",
+      "SongOfTheDay": "Trace"
     }
   },
   "AllowedHosts": "*"

song_of_the_day/song_of_the_day.csproj

@@ -6,16 +6,19 @@
     <EnforceCodeStyleInBuild>true</EnforceCodeStyleInBuild>
   </PropertyGroup>
   <ItemGroup>
+    <PackageReference Include="AngleSharp" Version="1.3.0" />
     <PackageReference Include="CommandLineParser" Version="2.9.1" />
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.3" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="9.0.3">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.4" />
     <PackageReference Include="NSwag.ApiDescription.Client" Version="13.0.5" />
     <PackageReference Include="Scalar.AspNetCore" Version="2.1.*" />
+    <PackageReference Include="SpotifyAPI.Web" Version="7.2.1" />
+    <PackageReference Include="YouTubeMusicAPI" Version="2.2.8" />
     <PackageReference Include="System.DirectoryServices.Protocols" Version="*" />
   </ItemGroup>
   <ItemGroup>

song_of_the_day/swagger.json

@@ -2423,6 +2423,9 @@
                 "edit_timestamp": {
                     "type": "integer"
                 },
+                "link_preview": {
+                    "$ref": "#/definitions/data.LinkPreviewType"
+                },
                 "mentions": {
                     "type": "array",
                     "items": {
@@ -2817,6 +2820,23 @@
                 }
             }
         },
+        "data.LinkPreviewType": {
+            "type": "object",
+            "properties": {
+                "base64_thumbnail": {
+                    "type": "string"
+                },
+                "description": {
+                    "type": "string"
+                },
+                "title": {
+                    "type": "string"
+                },
+                "url": {
+                    "type": "string"
+                }
+            }
+        },
         "data.MessageMention": {
             "type": "object",
             "properties": {