Added product categories

LiteCharms.Features.MidrandBooks/Categories/CategoryService.cs

@@ -55,8 +55,8 @@ public sealed class CategoryService(IDbContextFactory<MidrandBooksDbContext> con
 
             var query = context.Categories.AsNoTracking()
                 .OrderByDescending(o => o.IsMain)
-                    .ThenByDescending(o => o.Id)                
-                    .ThenBy(o => o.IsMain)
+                    .ThenByDescending(o => o.Id)
+                    .ThenBy(o => o.Name)
                 .AsQueryable();
 
             query = isMain is null

LiteCharms.Features.MidrandBooks/Extensions/Mappers.cs

@@ -147,25 +147,21 @@ public static class Mappers
         Enabled = entity.Enabled
     };
 
-    public static Product ToModel(this Products.Entities.Product entity)
+    public static Product ToModel(this Products.Entities.Product entity) => new Product
     {
-        return new Product
-        {
-            Id = entity.Id,
-            CreatedAt = entity.CreatedAt,
-            UpdatedAt = entity.UpdatedAt,
-            Name = entity.Name,
-            Summary = entity.Summary,
-            Description = entity.Description,
-            Type = entity.Type,
-            ImageUrl = entity.ImageUrl,
-            ThumbnailUrls = entity.ThumbnailUrls,
-            Metadata = entity.Metadata,
-            Categories = entity.Categories,
-            Enabled = entity.Enabled,
-            Price = entity.Prices?.FirstOrDefault(p => p.Enabled)?.ToModel() ?? null,
-        };
-    }
+        Id = entity.Id,
+        CreatedAt = entity.CreatedAt,
+        UpdatedAt = entity.UpdatedAt,
+        Name = entity.Name,
+        Summary = entity.Summary,
+        Description = entity.Description,
+        Type = entity.Type,
+        ImageUrl = entity.ImageUrl,
+        ThumbnailUrls = entity.ThumbnailUrls,
+        Metadata = entity.Metadata,
+        Enabled = entity.Enabled,
+        Price = entity.Prices?.FirstOrDefault(p => p.Enabled)?.ToModel() ?? null,
+    };
 
     public static Author ToModel(this Authors.Entities.Author entity) => new()
     {

LiteCharms.Features.MidrandBooks/Postgres/MidrandBooksDbContext.cs

@@ -38,4 +38,6 @@ public sealed class MidrandBooksDbContext(DbContextOptions<MidrandBooksDbContext
     public DbSet<ShippingProvider> ShippingProviders => Set<ShippingProvider>();
 
     public DbSet<Category> Categories => Set<Category>();
+
+    public DbSet<ProductCategory> ProductCategories => Set<ProductCategory>();
 }

LiteCharms.Features.MidrandBooks/Postgres/Migrations/20260530125323_AddedProductCategories.cs

@@ -0,0 +1,68 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace LiteCharms.Features.MidrandBooks.Postgres.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddedProductCategories : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "Categories",
+                table: "Products");
+
+            migrationBuilder.CreateTable(
+                name: "ProductCategories",
+                columns: table => new
+                {
+                    Id = table.Column<long>(type: "bigint", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ProductId = table.Column<long>(type: "bigint", nullable: false),
+                    CategoryId = table.Column<long>(type: "bigint", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ProductCategories", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_ProductCategories_Categories_CategoryId",
+                        column: x => x.CategoryId,
+                        principalTable: "Categories",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_ProductCategories_Products_ProductId",
+                        column: x => x.ProductId,
+                        principalTable: "Products",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ProductCategories_CategoryId",
+                table: "ProductCategories",
+                column: "CategoryId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ProductCategories_ProductId",
+                table: "ProductCategories",
+                column: "ProductId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "ProductCategories");
+
+            migrationBuilder.AddColumn<string[]>(
+                name: "Categories",
+                table: "Products",
+                type: "text[]",
+                nullable: true);
+        }
+    }
+}

LiteCharms.Features.MidrandBooks/Postgres/Migrations/MidrandBooksDbContextModelSnapshot.cs

@@ -586,9 +586,6 @@ namespace LiteCharms.Features.MidrandBooks.Postgres.Migrations
 
                     NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<long>("Id"));
 
-                    b.PrimitiveCollection<string[]>("Categories")
-                        .HasColumnType("text[]");
-
                     b.Property<DateTime>("CreatedAt")
                         .ValueGeneratedOnAdd()
                         .HasColumnType("timestamp with time zone")
@@ -633,6 +630,29 @@ namespace LiteCharms.Features.MidrandBooks.Postgres.Migrations
                     b.ToTable("Products", (string)null);
                 });
 
+            modelBuilder.Entity("LiteCharms.Features.MidrandBooks.Products.Entities.ProductCategory", b =>
+                {
+                    b.Property<long>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("bigint");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<long>("Id"));
+
+                    b.Property<long>("CategoryId")
+                        .HasColumnType("bigint");
+
+                    b.Property<long>("ProductId")
+                        .HasColumnType("bigint");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CategoryId");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("ProductCategories", (string)null);
+                });
+
             modelBuilder.Entity("LiteCharms.Features.MidrandBooks.Products.Entities.ProductPrice", b =>
                 {
                     b.Property<long>("Id")
@@ -911,6 +931,25 @@ namespace LiteCharms.Features.MidrandBooks.Postgres.Migrations
                     b.Navigation("Metadata");
                 });
 
+            modelBuilder.Entity("LiteCharms.Features.MidrandBooks.Products.Entities.ProductCategory", b =>
+                {
+                    b.HasOne("LiteCharms.Features.MidrandBooks.Categories.Entities.Category", "Category")
+                        .WithMany()
+                        .HasForeignKey("CategoryId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("LiteCharms.Features.MidrandBooks.Products.Entities.Product", "Product")
+                        .WithMany("Categories")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Category");
+
+                    b.Navigation("Product");
+                });
+
             modelBuilder.Entity("LiteCharms.Features.MidrandBooks.Products.Entities.ProductPrice", b =>
                 {
                     b.HasOne("LiteCharms.Features.MidrandBooks.Products.Entities.Product", "Product")
@@ -955,6 +994,8 @@ namespace LiteCharms.Features.MidrandBooks.Postgres.Migrations
 
             modelBuilder.Entity("LiteCharms.Features.MidrandBooks.Products.Entities.Product", b =>
                 {
+                    b.Navigation("Categories");
+
                     b.Navigation("Prices");
                 });
 #pragma warning restore 612, 618

LiteCharms.Features.MidrandBooks/Products/Entities/Product.cs

@@ -3,5 +3,7 @@
 [EntityTypeConfiguration<ProductConfiguration, Product>]
 public class Product : Models.Product
 {
+    public virtual ICollection<ProductCategory> Categories { get; set; } = [];
+
     public virtual ICollection<ProductPrice> Prices { get; set; } = [];
 }

LiteCharms.Features.MidrandBooks/Products/Entities/ProductCategory.cs

@@ -0,0 +1,11 @@
+using LiteCharms.Features.MidrandBooks.Categories.Entities;
+
+namespace LiteCharms.Features.MidrandBooks.Products.Entities;
+
+[EntityTypeConfiguration<ProductCategoryConfiguration, ProductCategory>]
+public class ProductCategory : Models.ProductCategory
+{
+    public virtual Product? Product { get; set; }
+
+    public virtual Category? Category { get; set; }
+}

LiteCharms.Features.MidrandBooks/Products/Entities/ProductCategoryConfiguration.cs

@@ -0,0 +1,23 @@
+namespace LiteCharms.Features.MidrandBooks.Products.Entities;
+
+public sealed class ProductCategoryConfiguration : IEntityTypeConfiguration<ProductCategory>
+{
+    public void Configure(EntityTypeBuilder<ProductCategory> builder)
+    {
+        builder.ToTable("ProductCategories");
+
+        builder.HasKey(p => p.Id);
+        builder.Property(p => p.ProductId).IsRequired();
+        builder.Property(p => p.CategoryId).IsRequired();
+
+        builder.HasOne(p => p.Product)
+            .WithMany(p => p.Categories)
+            .HasForeignKey(p => p.ProductId)
+            .OnDelete(DeleteBehavior.Cascade);
+
+        builder.HasOne(c => c.Category)
+            .WithMany()
+            .HasForeignKey(c => c.CategoryId)
+            .OnDelete(DeleteBehavior.Cascade);
+    }
+}

LiteCharms.Features.MidrandBooks/Products/Entities/ProductConfiguration.cs

@@ -17,7 +17,6 @@ public sealed class ProductConfiguration : IEntityTypeConfiguration<Product>
         builder.Property(f => f.Description).HasMaxLength(1024);
         builder.Property(f => f.ImageUrl).HasMaxLength(1024);
         builder.Property(f => f.Enabled).HasDefaultValue(false);
-        builder.Property(f => f.Categories).IsRequired(false);
         builder.Property(f => f.ThumbnailUrls).IsRequired(false);
 
         builder.OwnsOne(f => f.Metadata, b => { b.ToJson(); });

LiteCharms.Features.MidrandBooks/Products/Models/Product.cs

@@ -22,8 +22,6 @@ public class Product
 
     public string[]? ThumbnailUrls { get; set; }
 
-    public string[]? Categories { get; set; }
-
     public ProductMetadata? Metadata { get; set; }
 
     public ProductPrice? Price { get; set; }

LiteCharms.Features.MidrandBooks/Products/Models/ProductCategory.cs

@@ -0,0 +1,10 @@
+namespace LiteCharms.Features.MidrandBooks.Products.Models;
+
+public class ProductCategory
+{
+    public long Id { get; set; }
+
+    public long ProductId { get; set; }
+
+    public long CategoryId { get; set; }
+}

LiteCharms.Features.MidrandBooks/Products/ProductService.cs

@@ -1,4 +1,5 @@
 using LiteCharms.Features.MidrandBooks.Abstractions;
+using LiteCharms.Features.MidrandBooks.Categories.Models;
 using LiteCharms.Features.MidrandBooks.Extensions;
 using LiteCharms.Features.MidrandBooks.Postgres;
 using LiteCharms.Features.MidrandBooks.Products.Models;
@@ -8,6 +9,100 @@ namespace LiteCharms.Features.MidrandBooks.Products;
 
 public sealed class ProductService(IDbContextFactory<MidrandBooksDbContext> contextFactory) : IService
 {
+    public async ValueTask<Result> AddProductCategoryAsync(long productId, long categoryId, CancellationToken cancellationToken = default)
+    {
+        try
+        {
+            await using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            if (!await context.Products.AnyAsync(p => p.Id == productId && p.Enabled, cancellationToken))
+                return Result.Fail("Product does not exist");
+
+            if (!await context.Categories.AnyAsync(c => c.Id == categoryId && c.Enabled, cancellationToken))
+                return Result.Fail("Category does not exist");
+
+            if (await context.ProductCategories.AnyAsync(c => c.ProductId == productId && c.CategoryId == categoryId, cancellationToken))
+                return Result.Fail("Category already assigned to product");
+
+            context.ProductCategories.Add(new Entities.ProductCategory
+            {
+                ProductId = productId,
+                CategoryId = categoryId,
+            });
+
+            return await context.SaveChangesAsync(cancellationToken) > 0
+                ? Result.Ok()
+                : Result.Fail("Could not add category to product");
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+
+    public async ValueTask<Result<Category[]>> GetProductCategoriesAsync(long productId, CancellationToken cancellationToken = default)
+    {
+        try
+        {
+            await using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var categories = await context.ProductCategories.AsNoTracking()
+                .Where(p => p.ProductId == productId)
+                .OrderByDescending(o => o.Id)                
+                .Select(p => p.Category)
+                .ToArrayAsync(cancellationToken);
+
+            return categories?.Length > 0
+                ? Result.Ok(categories.Select(c => c!.ToModel()).ToArray())
+                : Result.Fail<Category[]>("Failed to get product categories");
+
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+
+    public async ValueTask<Result> DeleteProductCategoryAsync(long productId, long categoryId, CancellationToken cancellationToken = default)
+    {
+        try
+        {
+            await using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var rowsDeleted = await context.ProductCategories
+                .Where(p => p.ProductId == productId && p.CategoryId == categoryId)
+                .ExecuteDeleteAsync(cancellationToken);
+
+            return rowsDeleted > 0
+                ? Result.Ok()
+                : Result.Fail("No product categories were deleted");
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+
+    public async ValueTask<Result> DeleteAllProductCategoriesAsync(long productId, CancellationToken cancellationToken = default)
+    {
+        try
+        {
+            await using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var rowsDeleted = await context.ProductCategories
+                .Where(p => p.ProductId == productId)
+                .ExecuteDeleteAsync(cancellationToken);
+
+            return rowsDeleted > 0
+                ? Result.Ok()
+                : Result.Fail("No product categories were deleted");
+        }
+        catch (Exception ex)
+        {
+            return Result.Fail(new Error(ex.Message).CausedBy(ex));
+        }
+    }
+
     public async ValueTask<Result> UpdateProductPriceStatusAsync(long productPriceId, bool isEnabled, CancellationToken cancellationToken = default)
     {
         try
@@ -68,9 +163,6 @@ public sealed class ProductService(IDbContextFactory<MidrandBooksDbContext> cont
             if (!string.IsNullOrWhiteSpace(filter.Title))
                 query = query.Where(p => EF.Functions.ILike(p.Name!, $"%{filter.Title}%"));
 
-            if (!string.IsNullOrWhiteSpace(filter.Category))
-                query = query.Where(p => p.Categories.Contains(filter.Category));
-
             if (!string.IsNullOrWhiteSpace(filter.Manufacturer))
                 query = query.Where(p => EF.Functions.ILike(p.Metadata!.Manufacturer!, $"%{filter.Manufacturer}%"));
 
@@ -152,7 +244,6 @@ public sealed class ProductService(IDbContextFactory<MidrandBooksDbContext> cont
                 ImageUrl = request.ImageUrl,
                 ThumbnailUrls = request.ThumbnailUrls,
                 Metadata = request.Metadata,
-                Categories = request.Categories,
                 Enabled = true
             });