release: version 0.4.0 🚀

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

@@ -4,6 +4,55 @@ Changelog
 
 (unreleased)
 ------------
+
+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)
+------------------
 - Ci: more CI fixes, refs NOISSUE. [Simon Diesenreiter]
 - Ci: improve commit message generation script, refs NOISSUE. [Simon
   Diesenreiter]

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

@@ -2,11 +2,13 @@ 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();
@@ -18,7 +20,7 @@ public class PhoneClaimCodeProviderService
             .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 +34,10 @@ 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",
@@ -83,6 +85,16 @@ public class AppConfiguration
         get; private set;
     }
 
+    public string SpotifyClientId
+    {
+        get; private set;
+    }
+
+    public string SpotifyClientSecret
+    {
+        get; private set;
+    }
+
     public bool UseBotTag
     {
         get; private set;

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/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/DataContextModelSnapshot.cs

@@ -35,6 +35,12 @@ namespace song_of_the_day.DataMigrations
                     b.Property<string>("Name")
                         .HasColumnType("text");
 
+                    b.Property<int?>("Provider")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("SpotifyId")
+                        .HasColumnType("text");
+
                     b.Property<string>("Url")
                         .HasColumnType("text");
 

song_of_the_day/Data/Song.cs

@@ -6,4 +6,6 @@ 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; }
 }

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/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 string Url { get; set; }
+    public string Title { get; set; }
+    public string Description { get; set; }
+    public 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);
         }
     }
 
@@ -70,12 +114,40 @@ 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);
@@ -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 +5,29 @@
 }
 
 <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>
+            <th>Details</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>
+                    <td><a href="/SongSubmission/@songSuggestion?.Id">View</a></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 +14,16 @@ public class IndexModel : PageModel
         _logger = logger;
     }
 
-    public void OnGet()
-    {
+    [BindProperty]
+    public List<SongSuggestion> SongSuggestions { get; set; } = new List<SongSuggestion>();
 
+    public async Task OnGet()
+    {
+        using var dci = DataContext.Instance;
+        this.SongSuggestions = dci.SongSuggestions.OrderByDescending(s => s.Date)
+            .Take(50)
+            .Include(s => s.Song)
+            .Include(s => s.User)
+            .ToList();
     }
 }

song_of_the_day/Pages/Shared/SongPartialModel.cs

@@ -0,0 +1,16 @@
+public class SongPartialModel
+{
+    public 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>

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 +1,158 @@
+@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>
+            </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>
+                </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 +1,237 @@
+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;
+            }
+        }
+    }
+
+
+    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;
+
+    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}**'s \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 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.cs

@@ -25,9 +25,9 @@ public class UserModel : PageModel
     {
         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;
         }
     }
@@ -36,10 +36,13 @@ public class UserModel : PageModel
     {
         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;
+            }
         }
     }
 }

song_of_the_day/Program.cs

@@ -1,32 +1,38 @@
 
 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);
 
 var builder = WebApplication.CreateBuilder(args);
 
-var rand = new Random();
-var num = rand.NextInt64();
-var mod = num % AppConfiguration.Instance.AverageDaysBetweenRequests;
 
-Console.WriteLine("Setting up user check timer");
+// 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<SongResolver>();
+
+var app = builder.Build();
+
+var logger = app.Logger;
+
+logger.LogTrace("Setting up user check timer");
 var userCheckTimer = new CronTimer("*/1 * * * *", "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)
@@ -34,10 +40,10 @@ 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,
@@ -59,9 +65,8 @@ userCheckTimer.OnOccurence += async (s, ea) =>
     }
     await dci.DisposeAsync();
 };
-userCheckTimer.Start();
 
-Console.WriteLine("Setting up user intro timer");
+logger.LogTrace("Setting up user intro timer");
 var userIntroTimer = new CronTimer("*/1 * * * *", "Europe/Vienna", includingSeconds: false);
 userIntroTimer.OnOccurence += async (s, ea) =>
 {
@@ -76,7 +81,8 @@ 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;
     }
@@ -87,43 +93,42 @@ userIntroTimer.OnOccurence += async (s, ea) =>
     }
     await dci.DisposeAsync();
 };
-userIntroTimer.Start();
 
 
-Console.WriteLine("Setting up pick of the day timer");
+logger.LogTrace("Setting up pick of the day timer");
 var pickOfTheDayTimer = new CronTimer("0 8 * * *", "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;
     }
@@ -135,41 +140,43 @@ 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://sord.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");
+logger.LogTrace("Setting up LdapAssociation timer");
 var ldapAssociationTimer = new CronTimer("*/10 * * * *", "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;
     }
@@ -190,27 +197,31 @@ 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("*/10 * * * *", "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
+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())

song_of_the_day/SongValidators/Base64UrlImageBuilder.cs

@@ -0,0 +1,23 @@
+public class Base64UrlImageBuilder
+{
+    public 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 { get; set; }
+
+    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);
+
+    bool CanValidateUri(Uri songUri);
+
+    Task<bool> CanExtractSongMetadataAsync(Uri songUri);
+
+    SongProvider GetSongProvider();
+}

song_of_the_day/SongValidators/SongResolver.cs

@@ -0,0 +1,84 @@
+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 (validator.CanValidateUri(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.CanValidateUri(songUri))
+            {
+                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 bool CanValidateUri(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 Task<bool> CanExtractSongMetadataAsync(Uri songUri)
+    {
+        return Task.FromResult(this.CanValidateUri(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 +1,20 @@
+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 bool CanValidateUri(Uri songUri)
+    {
+        return GetUriMatch(songUri).Success;
+    }
+}

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 Task<bool> CanExtractSongMetadataAsync(Uri songUri)
+    {
+        return Task.FromResult(this.CanValidateUri(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 this.CanValidateUri(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/SpotifyClient.cs

@@ -0,0 +1,44 @@
+using SpotifyAPI.Web;
+
+public class SpotifyApiClient
+{
+    private SpotifyClient _spotifyClient;
+
+    public SpotifyApiClient()
+    {
+        var config = SpotifyClientConfig.CreateDefault()
+            .WithAuthenticator(new ClientCredentialsAuthenticator(
+                AppConfiguration.Instance.SpotifyClientId,
+                AppConfiguration.Instance.SpotifyClientSecret));
+
+        _spotifyClient = new SpotifyClient(config);
+    }
+
+    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 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);
+        }
+    }
+}

song_of_the_day/VERSION

@@ -1 +1 @@
-0.3.0
+0.4.0

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": {