[FA-24] Reading lists

FictionArchive.Service.UserNovelDataService/Services/UserNovelDataServiceDbContext.cs

@@ -11,6 +11,8 @@ public class UserNovelDataServiceDbContext : FictionArchiveDbContext
     public DbSet<Novel> Novels { get; set; }
     public DbSet<Volume> Volumes { get; set; }
     public DbSet<Chapter> Chapters { get; set; }
+    public DbSet<ReadingList> ReadingLists { get; set; }
+    public DbSet<ReadingListItem> ReadingListItems { get; set; }
 
     public UserNovelDataServiceDbContext(DbContextOptions options, ILogger<UserNovelDataServiceDbContext> logger) : base(options, logger)
     {
@@ -34,5 +36,32 @@ public class UserNovelDataServiceDbContext : FictionArchiveDbContext
                 .HasForeignKey(b => b.UserId)
                 .OnDelete(DeleteBehavior.Cascade);
         });
+
+        modelBuilder.Entity<ReadingList>(entity =>
+        {
+            // Index for fetching user's lists
+            entity.HasIndex(r => r.UserId);
+
+            // User relationship with cascade delete
+            entity.HasOne(r => r.User)
+                .WithMany()
+                .HasForeignKey(r => r.UserId)
+                .OnDelete(DeleteBehavior.Cascade);
+        });
+
+        modelBuilder.Entity<ReadingListItem>(entity =>
+        {
+            // Unique constraint: one entry per novel per list
+            entity.HasIndex(i => new { i.ReadingListId, i.NovelId }).IsUnique();
+
+            // Index for efficient ordered retrieval
+            entity.HasIndex(i => new { i.ReadingListId, i.Order });
+
+            // ReadingList relationship with cascade delete
+            entity.HasOne(i => i.ReadingList)
+                .WithMany(r => r.Items)
+                .HasForeignKey(i => i.ReadingListId)
+                .OnDelete(DeleteBehavior.Cascade);
+        });
     }
 }