feat: basic initial implementation of spotify client link validator and song submission form refs: NOISSUE

song_of_the_day/.editorconfig

@@ -0,0 +1,4 @@
+[*.cs]
+
+# CS8981: The type name only contains lower-cased ascii characters. Such names may become reserved for the language.
+dotnet_diagnostic.CS8981.severity = none

song_of_the_day/Auth/LdapAuthenticationService.cs

@@ -10,6 +10,6 @@ public class LdapAuthenticationService : IAuthenticationService
     public bool Authenticate(string username, string password)
     {
         var ldapInstance = LdapIntegration.Instance;
-        return ldapInstance.TestLogin(username, password);
+        return ldapInstance == null ? false : ldapInstance.TestLogin(username, password);
     }
 }

song_of_the_day/Auth/PhoneClaimCodeProviderService.cs

@@ -18,7 +18,7 @@ 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 +32,7 @@ public class PhoneClaimCodeProviderService
             _phoneClaimNumbers[username] = phoneNumber;
         }
 
-        SignalIntegration.Instance.SendMessageToUserAsync("Your phone number validation code is: " + generatedCode, phoneNumber);
+        await SignalIntegration.Instance.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/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/MessengerIntegration/SignalIntegration.cs

@@ -7,8 +7,13 @@ public class SignalIntegration
 {
     public static SignalIntegration? Instance;
 
+    private readonly ILogger logger;
+
     public SignalIntegration(string uri, int port, string phoneNumber)
     {
+        using ILoggerFactory factory = LoggerFactory.Create(builder => builder.AddConsole().SetMinimumLevel(LogLevel.Information));
+        this.logger = factory.CreateLogger("SignalIntegration");
+
         var http = new HttpClient()
         {
             BaseAddress = new Uri(uri + ":" + port)
@@ -24,17 +29,19 @@ public class SignalIntegration
 
     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);
         }
     }
 
@@ -52,7 +59,7 @@ public class SignalIntegration
         }
         catch (Exception ex)
         {
-            Console.WriteLine("Exception (SendMessageToGroupAsync): " + ex.Message);
+            logger.LogError("Exception (SendMessageToGroupAsync): " + ex.Message);
         }
     }
 
@@ -70,7 +77,7 @@ public class SignalIntegration
         }
         catch (Exception ex)
         {
-            Console.WriteLine("Exception (SendMessageToUserAsync): " + ex.Message);
+            logger.LogError("Exception (SendMessageToUserAsync): " + ex.Message);
         }
     }
 
@@ -97,7 +104,7 @@ public class SignalIntegration
         }
         catch (Exception ex)
         {
-            Console.WriteLine("Exception (GetMemberListAsync): " + ex.Message);
+            logger.LogError("Exception (GetMemberListAsync): " + ex.Message);
         }
         return new List<string>();
     }
@@ -117,7 +124,7 @@ 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/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

@@ -43,6 +43,12 @@
                                 <a class="nav-link text-dark" asp-area="" asp-page="/UnclaimedPhoneNumbers">Unclaimed Phone Numbers</a>
                             </li>
                         }
+                        @if (this.User.Identity.IsAuthenticated && DoesUserHaveClaimedPhoneNumber())
+                        {
+                            <li class="nav-item">
+                                <a class="nav-link text-dark" asp-area="" asp-page="/SubmitSongs">Submit Songs</a>
+                            </li>
+                        }
                     </ul>
                 </div>
             </div>

song_of_the_day/Pages/Shared/_SongPartial.cshtml

@@ -0,0 +1,7 @@
+@model Song
+<label asp-for="Name">Name:</label>
+<input asp-for="Name" />
+<label asp-for="Artist">Artist:</label>
+<input asp-for="Artist" />
+<label asp-for="SpotifyId">Spotify ID:</label>
+<input asp-for="SpotifyId" />

song_of_the_day/Pages/SubmitSongs.cshtml

@@ -0,0 +1,25 @@
+@page
+@model SubmitSongsModel
+@{
+    ViewData["Title"] = "Submit Songs";
+}
+
+<div class="text-left">
+    <form method="post">
+        <label asp-for="SubmitUrl" >Song Url:</label>
+        <input asp-for="SubmitUrl" oninput="Update(this)" />
+    </form>
+        <form method="post">
+            <div id="songdata">
+                <partial name="_SongPartial" model="@Model.SongData" />
+            </div>
+            <input type="submit" title="Submit" value="Submit" disabled="CanSubmit" />
+        </form>
+</div>
+
+<script>
+    function Update(t) {
+        var url = '?handler=Update&&SubmitUrl=' + $(t).val();
+        $('#songdata').load(url)
+    }
+</script>

song_of_the_day/Pages/SubmitSongs.cshtml.cs

@@ -0,0 +1,71 @@
+using Microsoft.AspNetCore.Components;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using Microsoft.VisualBasic;
+
+namespace sotd.Pages;
+
+public class SubmitSongsModel : PageModel
+{
+    private readonly ILogger<UserModel> _logger;
+
+    private SongResolver songResolver;
+
+    private string _submitUrl;
+
+    public SubmitSongsModel(ILogger<UserModel> logger, SongResolver songResolver)
+    {
+        _logger = logger;
+        this.songResolver = songResolver;
+    }
+
+    [BindProperty]
+    public bool IsValidUrl { get; set; } = true;
+
+    [BindProperty]
+    public string SubmitUrl { 
+        get {
+            return _submitUrl;
+        }
+        set {
+            _submitUrl = 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;
+            }
+        }
+    }
+
+    [BindProperty]
+    public bool CanSubmit { get {
+        return !string.IsNullOrEmpty(SongData?.Artist) && ! string.IsNullOrEmpty(SongData?.Name);
+    } }
+
+    [BindProperty]
+    public Song SongData { get; set; }
+
+    public void OnPost()
+    {
+        // Todo implement save submission
+        var x = SongData.Name;
+    }
+
+    public IActionResult OnGetUpdate()
+    {
+        var songUrl = Request.Query["SubmitUrl"];
+        this.SubmitUrl = songUrl.ToString();
+        return Partial("_SongPartial", SongData);;
+    }
+}

song_of_the_day/Program.cs

@@ -18,7 +18,10 @@ LdapIntegration.Instance = new LdapIntegration(AppConfiguration.Instance.LDAPCon
 
 var builder = WebApplication.CreateBuilder(args);
 
-Console.WriteLine("Setting up user check timer");
+using ILoggerFactory factory = LoggerFactory.Create(builder => builder.AddConsole().SetMinimumLevel(LogLevel.Information));
+var logger = factory.CreateLogger("SongResolver");
+
+logger.LogTrace("Setting up user check timer");
 var userCheckTimer = new CronTimer("*/1 * * * *", "Europe/Vienna", includingSeconds: false);
 userCheckTimer.OnOccurence += async (s, ea) =>
 {
@@ -31,9 +34,9 @@ userCheckTimer.OnOccurence += async (s, ea) =>
         if (foundUser == null)
         {
             var newUserContact = await SignalIntegration.Instance.GetContactAsync(memberId);
-            Console.WriteLine("New user:");
+            logger.LogDebug("New user:");
-            Console.WriteLine($"   Name: {newUserContact.Name}");
+            logger.LogDebug($"   Name: {newUserContact.Name}");
-            Console.WriteLine($"   MemberId: {memberId}");
+            logger.LogDebug($"   MemberId: {memberId}");
             User newUser = new User()
             {
                 Name = newUserContact.Name,
@@ -55,9 +58,8 @@ 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) =>
 {
@@ -83,10 +85,9 @@ 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) =>
 {
@@ -94,32 +95,32 @@ pickOfTheDayTimer.OnOccurence += async (s, ea) =>
 
     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;
     }
@@ -145,7 +146,6 @@ pickOfTheDayTimer.OnOccurence += async (s, ea) =>
     }
     await dci.DisposeAsync();
 };
-pickOfTheDayTimer.Start();
 
 var startUserAssociationProcess = async (User userToAssociate) =>
 {
@@ -158,14 +158,14 @@ var startUserAssociationProcess = async (User userToAssociate) =>
     }
 };
 
-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;
     }
@@ -186,13 +186,6 @@ 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
-);
 
 // Add services to the container.
 builder.Services.AddRazorPages();
@@ -205,9 +198,20 @@ builder.Services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationSc
 
 builder.Services.AddSingleton<LdapAuthenticationService>();
 builder.Services.AddSingleton<PhoneClaimCodeProviderService>();
+builder.Services.AddSingleton<SongResolver>();
 
 var app = builder.Build();
 
+// only start interaction timers in production builds
+// for local/development testing we want those disabled
+if (!app.Environment.IsDevelopment())
+{
+    userCheckTimer.Start();
+    userIntroTimer.Start();
+    pickOfTheDayTimer.Start();
+    ldapAssociationTimer.Start();
+}
+
 // Configure the HTTP request pipeline.
 if (!app.Environment.IsDevelopment())
 {

song_of_the_day/SongValidators/ISongValidator.cs

@@ -0,0 +1,8 @@
+public interface ISongValidator
+{
+    Task<Song> ValidateAsync(Uri songUri);
+
+    bool CanValidateUri(Uri songUri);
+
+    Task<bool> CanExtractSongMetadataAsync(Uri songUri);
+}

song_of_the_day/SongValidators/SongResolver.cs

@@ -0,0 +1,66 @@
+using Microsoft.Extensions.Logging;
+
+public class SongResolver
+{
+    private readonly IEnumerable<ISongValidator> _songValidators;
+
+    private readonly ILogger logger;
+
+    public SongResolver()
+    {
+        using ILoggerFactory factory = LoggerFactory.Create(builder => builder.AddConsole().SetMinimumLevel(LogLevel.Information));
+        this.logger = factory.CreateLogger("SongResolver");
+        
+        this._songValidators = new List<ISongValidator>();
+
+        foreach (Type mytype in System.Reflection.Assembly.GetExecutingAssembly().GetTypes()
+                 .Where(mytype => mytype.GetInterfaces().Contains(typeof(ISongValidator)) && !(mytype.Name.EndsWith("Base")))) {
+            if (Activator.CreateInstance(mytype) 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;
+    }
+}

song_of_the_day/SongValidators/SongValidatorBase.cs

@@ -0,0 +1,16 @@
+using System.Text.RegularExpressions;
+
+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);
+
+    protected string LookupSpotifyId(string songName, string songArtist)
+    {
+        // TODO: Implement Spotify ID lookup logic
+        return songName + " by " + songArtist;
+    }
+}

song_of_the_day/SongValidators/SpotifyValidator.cs

@@ -0,0 +1,40 @@
+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_-]+)?$";
+
+    private SpotifyApiClient spotifyApiClient;
+
+    public SpotifyValidator()
+    {
+        spotifyApiClient = new SpotifyApiClient();
+    }
+
+    public override async Task<bool> CanExtractSongMetadataAsync(Uri songUri)
+    {
+        return this.CanValidateUri(songUri);
+    }
+
+    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 +1,12 @@
+using System.Text.RegularExpressions;
+
+public abstract class UriBasedSongValidatorBase : SongValidatorBase
+{
+    public abstract string UriValidatorRegex { get; }
+
+    public override bool CanValidateUri(Uri songUri)
+    {
+        var regexp = new Regex(UriValidatorRegex, RegexOptions.IgnoreCase);
+        return regexp.Match(songUri.ToString()).Success;
+    }
+}

song_of_the_day/SongValidators/YoutubeMusicValidator.cs

@@ -0,0 +1,43 @@
+using AngleSharp;
+using AngleSharp.Dom;
+
+public class YoutubeMusicValidator : UriBasedSongValidatorBase
+{
+    public override string UriValidatorRegex => @"^(https?://)?(music\.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 async Task<Song> ValidateAsync(Uri songUri)
+    {
+        var title = string.Empty;
+        var artist = string.Empty;
+
+        using(HttpClient httpClient = new HttpClient())
+        {
+            var response = await httpClient.GetAsync(songUri);
+            var config = Configuration.Default.WithDefaultLoader();
+            var context = BrowsingContext.New(config);
+            using(var document = await context.OpenAsync(async req => req.Content(await response.Content.ReadAsStringAsync())))
+            {
+                // document.getElementsByTagName("ytmusic-player-queue-item")[0].getElementsByClassName("song-title")[0].innerHTML
+                title = document.QuerySelector(".ytmusic-player-queue-item")?.QuerySelector(".song-title")?.InnerHtml;
+                // document.getElementsByTagName("ytmusic-player-queue-item")[0].getElementsByClassName("byline")[0].innerHTML
+                artist = document.QuerySelector(".ytmusic-player-queue-item")?.QuerySelector(".byline")?.InnerHtml;
+            }
+        }
+        
+        var song = new Song
+        {
+            Name = title,
+            Artist = artist,
+            Url = songUri.ToString(),
+            Provider = SongProvider.YouTube,
+            SpotifyId = this.LookupSpotifyId(title, artist)
+        };
+
+        return song;
+    }
+}

song_of_the_day/SongValidators/YoutubeValidator.cs

@@ -0,0 +1,55 @@
+using AngleSharp;
+using AngleSharp.Dom;
+using AngleSharp.Html.Dom;
+
+public class YoutubeValidator : UriBasedSongValidatorBase
+{
+    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)
+    {
+        using(HttpClient httpClient = new HttpClient())
+        {
+            var response = await httpClient.GetAsync(songUri);
+            var config = Configuration.Default.WithDefaultLoader();
+            var context = BrowsingContext.New(config);
+            using(var document = await context.OpenAsync(async req => req.Content(await response.Content.ReadAsStringAsync())))
+            {
+                var documentContents = (document.ChildNodes[1] as HtmlElement).InnerHtml;
+                var titleElement = document.QuerySelectorAll(".yt-video-attribute-view-model__title")[0];
+                var artistParentElement = document.QuerySelectorAll(".yt-video-attribute-view-model__secondary-subtitle")[0];
+
+                return titleElement != null && artistParentElement != null && artistParentElement.Children.Length > 0;
+            }
+        }
+    }
+
+    public override async Task<Song> ValidateAsync(Uri songUri)
+    {
+        var title = string.Empty;
+        var artist = string.Empty;
+
+        using(HttpClient httpClient = new HttpClient())
+        {
+            var response = await httpClient.GetAsync(songUri);
+            var config = Configuration.Default.WithDefaultLoader();
+            var context = BrowsingContext.New(config);
+            using(var document = await context.OpenAsync(async req => req.Content(await response.Content.ReadAsStringAsync())))
+            {
+                title = document.QuerySelectorAll(".yt-video-attribute-view-model__title")[0]?.InnerHtml;
+                artist = document.QuerySelectorAll(".yt-video-attribute-view-model__secondary-subtitle")[0]?.Children[0]?.InnerHtml;
+            }
+        }
+        
+        var song = new Song
+        {
+            Name = title,
+            Artist = artist,
+            Url = songUri.ToString(),
+            Provider = SongProvider.YouTube,
+            SpotifyId = this.LookupSpotifyId(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/song_of_the_day.csproj

@@ -6,16 +6,18 @@
     <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="System.DirectoryServices.Protocols" Version="*" />
   </ItemGroup>
   <ItemGroup>