Initial commit

src/PowderCoating.Application/Mappings/CatalogProfile.cs

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+using AutoMapper;
+using PowderCoating.Application.DTOs.Catalog;
+using PowderCoating.Core.Entities;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace PowderCoating.Application.Mappings
+{
+    /// <summary>
+    /// AutoMapper profile for product catalog entities.
+    /// </summary>
+    public class CatalogProfile : Profile
+    {
+        public CatalogProfile()
+        {
+            // ==================== Category Mappings ====================
+
+            // Category -> CategoryDto
+            CreateMap<CatalogCategory, CategoryDto>()
+                .ForMember(dest => dest.ParentCategoryName,
+                    opt => opt.MapFrom(src => src.ParentCategory != null ? src.ParentCategory.Name : null))
+                .ForMember(dest => dest.ItemCount,
+                    opt => opt.MapFrom(src => src.Items.Count(i => !i.IsDeleted)))
+                .ForMember(dest => dest.SubCategoryCount,
+                    opt => opt.MapFrom(src => src.SubCategories.Count(c => !c.IsDeleted)));
+
+            // CreateCategoryDto -> CatalogCategory
+            CreateMap<CreateCategoryDto, CatalogCategory>()
+                .ForMember(dest => dest.Id, opt => opt.Ignore())
+                .ForMember(dest => dest.CompanyId, opt => opt.Ignore())
+                .ForMember(dest => dest.CreatedAt, opt => opt.Ignore())
+                .ForMember(dest => dest.UpdatedAt, opt => opt.Ignore())
+                .ForMember(dest => dest.CreatedBy, opt => opt.Ignore())
+                .ForMember(dest => dest.UpdatedBy, opt => opt.Ignore())
+                .ForMember(dest => dest.IsDeleted, opt => opt.Ignore())
+                .ForMember(dest => dest.ParentCategory, opt => opt.Ignore())
+                .ForMember(dest => dest.SubCategories, opt => opt.Ignore())
+                .ForMember(dest => dest.Items, opt => opt.Ignore());
+
+            // UpdateCategoryDto -> CatalogCategory
+            CreateMap<UpdateCategoryDto, CatalogCategory>()
+                .ForMember(dest => dest.CompanyId, opt => opt.Ignore())
+                .ForMember(dest => dest.CreatedAt, opt => opt.Ignore())
+                .ForMember(dest => dest.UpdatedAt, opt => opt.Ignore())
+                .ForMember(dest => dest.CreatedBy, opt => opt.Ignore())
+                .ForMember(dest => dest.UpdatedBy, opt => opt.Ignore())
+                .ForMember(dest => dest.IsDeleted, opt => opt.Ignore())
+                .ForMember(dest => dest.ParentCategory, opt => opt.Ignore())
+                .ForMember(dest => dest.SubCategories, opt => opt.Ignore())
+                .ForMember(dest => dest.Items, opt => opt.Ignore());
+
+            // CatalogCategory -> CategoryTreeDto (recursive)
+            CreateMap<CatalogCategory, CategoryTreeDto>()
+                .ForMember(dest => dest.ItemCount,
+                    opt => opt.MapFrom(src => src.Items.Count(i => !i.IsDeleted)))
+                .ForMember(dest => dest.HasItems,
+                    opt => opt.MapFrom(src => src.Items.Any(i => !i.IsDeleted)))
+                .ForMember(dest => dest.Children,
+                    opt => opt.MapFrom(src => src.SubCategories.Where(c => !c.IsDeleted).OrderBy(c => c.DisplayOrder)));
+
+            // ==================== Item Mappings ====================
+
+            // CatalogItem -> CatalogItemDto
+            CreateMap<CatalogItem, CatalogItemDto>()
+                .ForMember(dest => dest.CategoryName,
+                    opt => opt.MapFrom(src => src.Category.Name))
+                .ForMember(dest => dest.FullCategoryPath,
+                    opt => opt.MapFrom(src => GetCategoryPath(src.Category)))
+                .ForMember(dest => dest.RevenueAccountName,
+                    opt => opt.MapFrom(src => src.RevenueAccount != null
+                        ? $"{src.RevenueAccount.AccountNumber} – {src.RevenueAccount.Name}" : null))
+                .ForMember(dest => dest.CogsAccountName,
+                    opt => opt.MapFrom(src => src.CogsAccount != null
+                        ? $"{src.CogsAccount.AccountNumber} – {src.CogsAccount.Name}" : null));
+
+            // CatalogItem -> CatalogItemListDto
+            CreateMap<CatalogItem, CatalogItemListDto>()
+                .ForMember(dest => dest.CategoryName,
+                    opt => opt.MapFrom(src => src.Category.Name));
+
+            // CreateCatalogItemDto -> CatalogItem
+            CreateMap<CreateCatalogItemDto, CatalogItem>()
+                .ForMember(dest => dest.Id, opt => opt.Ignore())
+                .ForMember(dest => dest.CompanyId, opt => opt.Ignore())
+                .ForMember(dest => dest.CreatedAt, opt => opt.Ignore())
+                .ForMember(dest => dest.UpdatedAt, opt => opt.Ignore())
+                .ForMember(dest => dest.CreatedBy, opt => opt.Ignore())
+                .ForMember(dest => dest.UpdatedBy, opt => opt.Ignore())
+                .ForMember(dest => dest.IsDeleted, opt => opt.Ignore())
+                .ForMember(dest => dest.Category, opt => opt.Ignore())
+                .ForMember(dest => dest.RevenueAccount, opt => opt.Ignore())
+                .ForMember(dest => dest.CogsAccount, opt => opt.Ignore());
+
+            // UpdateCatalogItemDto -> CatalogItem
+            CreateMap<UpdateCatalogItemDto, CatalogItem>()
+                .ForMember(dest => dest.CompanyId, opt => opt.Ignore())
+                .ForMember(dest => dest.CreatedAt, opt => opt.Ignore())
+                .ForMember(dest => dest.UpdatedAt, opt => opt.Ignore())
+                .ForMember(dest => dest.CreatedBy, opt => opt.Ignore())
+                .ForMember(dest => dest.UpdatedBy, opt => opt.Ignore())
+                .ForMember(dest => dest.IsDeleted, opt => opt.Ignore())
+                .ForMember(dest => dest.Category, opt => opt.Ignore())
+                .ForMember(dest => dest.RevenueAccount, opt => opt.Ignore())
+                .ForMember(dest => dest.CogsAccount, opt => opt.Ignore());
+
+            // CatalogItem -> UpdateCatalogItemDto (reverse mapping for Edit)
+            CreateMap<CatalogItem, UpdateCatalogItemDto>();
+        }
+
+        /// <summary>
+        /// Builds the full category path by walking up the hierarchy.
+        /// Example: "Wheels > 18 inch"
+        /// </summary>
+        private string GetCategoryPath(CatalogCategory category)
+        {
+            var path = new List<string>();
+            var current = category;
+
+            // Walk up the hierarchy
+            while (current != null)
+            {
+                path.Insert(0, current.Name);
+                current = current.ParentCategory;
+            }
+
+            return string.Join(" > ", path);
+        }
+    }
+}