feat: add "fake" tmdb season xrefs for series

- Added "fake" tmdb season cross-references inferred from the linked episodes.

- Added the images linked to the seasons to the shoko series entry, because apparently there isn't a 100% overlap between the show images and season images.

Shoko.Server/Models/CrossReference/CrossRef_AniDB_TMDB_Episode.cs

@@ -60,6 +60,11 @@ public CrossRef_AniDB_TMDB_Episode(int anidbEpisodeId, int anidbAnimeId, int tmd
     public TMDB_Episode? TmdbEpisode =>
         TmdbEpisodeID == 0 ? null : RepoFactory.TMDB_Episode.GetByTmdbEpisodeID(TmdbEpisodeID);
 
+    public CrossRef_AniDB_TMDB_Season? TmdbSeasonCrossReference =>
+        TmdbEpisode is { } tmdbEpisode
+            ? new(AnidbAnimeID, tmdbEpisode.TmdbSeasonID, TmdbShowID, tmdbEpisode.SeasonNumber)
+            : null;
+
     public TMDB_Season? TmdbSeason =>
         TmdbEpisode?.TmdbSeason;
 

Shoko.Server/Models/CrossReference/CrossRef_AniDB_TMDB_Season.cs

@@ -0,0 +1,97 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Shoko.Plugin.Abstractions.DataModels;
+using Shoko.Plugin.Abstractions.Enums;
+using Shoko.Server.Models.TMDB;
+using Shoko.Server.Repositories;
+
+#nullable enable
+namespace Shoko.Server.Models.CrossReference;
+
+/// <summary>
+/// Not actually stored in the database, but made from the episode cross-reference.
+/// </summary>
+public class CrossRef_AniDB_TMDB_Season : IEquatable<CrossRef_AniDB_TMDB_Season>
+{
+    #region Columns
+
+    public int AnidbAnimeID { get; set; }
+
+    public int TmdbShowID { get; set; }
+
+    public int TmdbSeasonID { get; set; }
+
+    public int SeasonNumber { get; set; }
+
+    #endregion
+    #region Constructors
+
+    public CrossRef_AniDB_TMDB_Season(int anidbAnimeId, int tmdbSeasonId, int tmdbShowId, int seasonNumber = 1)
+    {
+        AnidbAnimeID = anidbAnimeId;
+        TmdbSeasonID = tmdbSeasonId;
+        TmdbShowID = tmdbShowId;
+        SeasonNumber = seasonNumber;
+    }
+
+    #endregion
+    #region Methods
+
+    public SVR_AniDB_Anime? AnidbAnime =>
+        RepoFactory.AniDB_Anime.GetByAnimeID(AnidbAnimeID);
+
+    public SVR_AnimeSeries? AnimeSeries =>
+        RepoFactory.AnimeSeries.GetByAnimeID(AnidbAnimeID);
+
+    public TMDB_Season? TmdbSeason =>
+        TmdbSeasonID == 0 ? null : RepoFactory.TMDB_Season.GetByTmdbSeasonID(TmdbSeasonID);
+
+    public TMDB_Show? TmdbShow =>
+        TmdbShowID == 0 ? null : RepoFactory.TMDB_Show.GetByTmdbShowID(TmdbShowID);
+
+    /// <summary>
+    /// Get all images for the episode, or all images for the given
+    /// <paramref name="entityType"/> provided for the episode.
+    /// </summary>
+    /// <param name="entityType">If set, will restrict the returned list to only
+    /// containing the images of the given entity type.</param>
+    /// <returns>A read-only list of images that are linked to the episode.
+    /// </returns>
+    public IReadOnlyList<TMDB_Image> GetImages(ImageEntityType? entityType = null) => entityType.HasValue
+        ? RepoFactory.TMDB_Image.GetByTmdbSeasonIDAndType(TmdbSeasonID, entityType.Value)
+        : RepoFactory.TMDB_Image.GetByTmdbSeasonID(TmdbSeasonID);
+
+    /// <summary>
+    /// Get all images for the episode, or all images for the given
+    /// <paramref name="entityType"/> provided for the episode.
+    /// </summary>
+    /// <param name="entityType">If set, will restrict the returned list to only
+    /// containing the images of the given entity type.</param>
+    /// <param name="preferredImages">The preferred images.</param>
+    /// <returns>A read-only list of images that are linked to the episode.
+    /// </returns>
+    public IReadOnlyList<IImageMetadata> GetImages(ImageEntityType? entityType, IReadOnlyDictionary<ImageEntityType, IImageMetadata> preferredImages) =>
+        GetImages(entityType)
+            .GroupBy(i => i.ImageType)
+            .SelectMany(gB => preferredImages.TryGetValue(gB.Key, out var pI) ? gB.Select(i => i.Equals(pI) ? pI : i) : gB)
+            .ToList();
+
+    public bool Equals(CrossRef_AniDB_TMDB_Season? other)
+    {
+        if (other is null) return false;
+        if (ReferenceEquals(this, other)) return true;
+        return AnidbAnimeID == other.AnidbAnimeID
+               && TmdbSeasonID == other.TmdbSeasonID
+               && TmdbShowID == other.TmdbShowID
+               && SeasonNumber == other.SeasonNumber;
+    }
+
+    public override bool Equals(object? obj)
+        => Equals(obj as CrossRef_AniDB_TMDB_Season);
+
+    public override int GetHashCode()
+        => HashCode.Combine(AnidbAnimeID, TmdbSeasonID, TmdbShowID, SeasonNumber);
+
+    #endregion
+}

Shoko.Server/Models/SVR_AnimeSeries.cs

@@ -352,6 +352,8 @@ public IReadOnlyList<IImageMetadata> GetImages(ImageEntityType? entityType = nul
         }
         foreach (var xref in TmdbShowCrossReferences)
             images.AddRange(xref.GetImages(entityType, preferredImages));
+        foreach (var xref in TmdbSeasonCrossReferences)
+            images.AddRange(xref.GetImages(entityType, preferredImages));
         foreach (var xref in TmdbMovieCrossReferences.DistinctBy(xref => xref.TmdbMovieID))
             images.AddRange(xref.GetImages(entityType, preferredImages));
 
@@ -389,6 +391,24 @@ public IReadOnlyList<CrossRef_AniDB_TMDB_Episode> GetTmdbEpisodeCrossReferences(
         ? RepoFactory.CrossRef_AniDB_TMDB_Episode.GetOnlyByAnidbAnimeAndTmdbShowIDs(AniDB_ID, tmdbShowId.Value)
         : RepoFactory.CrossRef_AniDB_TMDB_Episode.GetByAnidbAnimeID(AniDB_ID);
 
+    public IReadOnlyList<CrossRef_AniDB_TMDB_Season> TmdbSeasonCrossReferences =>
+        TmdbEpisodeCrossReferences
+            .Select(xref => xref.TmdbSeasonCrossReference)
+            .WhereNotNull()
+            .DistinctBy(xref => xref.TmdbSeasonID)
+            .ToList();
+
+    public IReadOnlyList<TMDB_Season> TmdbSeasons => TmdbSeasonCrossReferences
+        .Select(xref => xref.TmdbSeason)
+        .WhereNotNull()
+        .ToList();
+
+    public IReadOnlyList<CrossRef_AniDB_TMDB_Season> GetTmdbSeasonCrossReferences(int? tmdbShowId = null) =>
+        GetTmdbEpisodeCrossReferences(tmdbShowId)
+            .Select(xref => xref.TmdbSeasonCrossReference)
+            .WhereNotNull().Distinct()
+            .ToList();
+
     #endregion
 
     #region Trakt