Initial efcore migration and updates to make sure upserting novels (mostly) works. still need to do chapter handling

DBConnection/Repositories/AuthorRepository.cs

@@ -0,0 +1,17 @@
+using DBConnection.Models;
+using DBConnection.Repositories.Interfaces;
+using Microsoft.EntityFrameworkCore;
+
+namespace DBConnection.Repositories;
+
+public class AuthorRepository : BaseRepository<Author>, IAuthorRepository
+{
+    public AuthorRepository(AppDbContext dbContext) : base(dbContext)
+    {
+    }
+
+    protected override IQueryable<Author> GetAllIncludedQueryable()
+    {
+        return DbContext.Authors.Include(i => i.Novels);
+    }
+}

DBConnection/Repositories/BaseRepository.cs

@@ -13,7 +13,8 @@ public abstract class BaseRepository<TEntityType> : IRepository<TEntityType> whe
     private object?[]? GetPrimaryKey(TEntityType entity)
     {
         var keyProperties = DbContext.Model.FindEntityType(typeof(TEntityType))?.FindPrimaryKey()?.Properties.Select(p => p.Name);
-        return keyProperties?.Select(p => entity.GetType().GetProperty(p)?.GetValue(entity, null)).ToArray();
+        var ret = keyProperties?.Select(p => entity.GetType().GetProperty(p)?.GetValue(entity, null)).ToArray();
+        return ret;
     }
 
     protected abstract IQueryable<TEntityType> GetAllIncludedQueryable();
@@ -48,7 +49,7 @@ public abstract class BaseRepository<TEntityType> : IRepository<TEntityType> whe
 
     public virtual async Task<TEntityType?> GetIncluded(TEntityType entity)
     {
-        return await GetIncluded(dbEntity => GetPrimaryKey(dbEntity) == GetPrimaryKey(entity));
+        return await GetIncluded(dbEntity => GetPrimaryKey(dbEntity).SequenceEqual(GetPrimaryKey(entity)));
     }
 
     public virtual async Task<TEntityType?> GetIncluded(Func<TEntityType, bool> predicate)

DBConnection/Repositories/Interfaces/IAuthorRepository.cs

@@ -0,0 +1,8 @@
+using DBConnection.Models;
+
+namespace DBConnection.Repositories.Interfaces;
+
+public interface IAuthorRepository : IRepository<Author>
+{
+    
+}

DBConnection/Repositories/Interfaces/ITagRepository.cs

@@ -0,0 +1,8 @@
+using DBConnection.Models;
+
+namespace DBConnection.Repositories.Interfaces;
+
+public interface ITagRepository : IRepository<Tag>
+{
+    
+}

DBConnection/Repositories/NovelRepository.cs

@@ -6,9 +6,32 @@ namespace DBConnection.Repositories;
 
 public class NovelRepository : BaseRepository<Novel>, INovelRepository
 {
-
-    public NovelRepository(AppDbContext dbContext) : base(dbContext)
+    private readonly IAuthorRepository _authorRepository;
+    private readonly ITagRepository _tagRepository;
+    public NovelRepository(AppDbContext dbContext, IAuthorRepository authorRepository, ITagRepository tagRepository) : base(dbContext)
     {
+        _authorRepository = authorRepository;
+        _tagRepository = tagRepository;
+    }
+
+    public override async Task<Novel> Upsert(Novel entity)
+    {
+        var dbEntity = await GetIncluded(entity) ?? entity;
+        dbEntity.Author = await _authorRepository.GetIncluded(entity.Author) ?? entity.Author;
+        List<Tag> newTags = new List<Tag>();
+        foreach (var tag in dbEntity.Tags)
+        {
+            newTags.Add(await _tagRepository.GetIncluded(tag) ?? tag);
+        }
+        dbEntity.Tags.Clear();
+        dbEntity.Tags = newTags;
+        if (DbContext.Entry(dbEntity).State == EntityState.Detached)
+        {
+            DbContext.Add(dbEntity);
+        }
+
+        await DbContext.SaveChangesAsync();
+        return dbEntity;
     }
 
     protected override IQueryable<Novel> GetAllIncludedQueryable()

DBConnection/Repositories/TagRepository.cs

@@ -0,0 +1,17 @@
+using DBConnection.Models;
+using DBConnection.Repositories.Interfaces;
+using Microsoft.EntityFrameworkCore;
+
+namespace DBConnection.Repositories;
+
+public class TagRepository : BaseRepository<Tag>, ITagRepository
+{
+    public TagRepository(AppDbContext dbContext) : base(dbContext)
+    {
+    }
+
+    protected override IQueryable<Tag> GetAllIncludedQueryable()
+    {
+        return DbContext.Tags.Include(i => i.Novels);
+    }
+}