Create e-commerce Web API

EcommerceApi/Ecommerce.Core/DTOs/Auth/AuthResponseDto.cs

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+namespace Ecommerce.Core.DTOs.Auth;
+
+public record AuthResponseDto(string Token, DateTime Expires);

EcommerceApi/Ecommerce.Core/DTOs/Auth/LoginDto.cs

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+namespace Ecommerce.Core.DTOs.Auth;
+
+public record LoginDto
+{
+    public string Email { get; init; } = string.Empty;
+    public string Password { get; init; } = string.Empty;
+}

EcommerceApi/Ecommerce.Core/DTOs/Auth/RegisterDto.cs

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+namespace Ecommerce.Core.DTOs.Auth;
+
+public record RegisterDto
+{
+    public string Username { get; init; } = string.Empty;
+    public string Email { get; init; } = string.Empty;
+    public string Password { get; init; } = string.Empty;
+    public string? Address { get; init; }
+    public string? PhoneNumber { get; init; }
+}

EcommerceApi/Ecommerce.Core/DTOs/Category/CategoryDto.cs

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+namespace Ecommerce.Core.DTOs.Category;
+
+public record CategoryDto
+{
+    public int Id { get; init; }
+    public string Name { get; init; } = string.Empty;
+    public string? Description { get; init; }
+}

EcommerceApi/Ecommerce.Core/DTOs/Category/CreateCategoryDto.cs

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+namespace Ecommerce.Core.DTOs.Category;
+
+public record CreateCategoryDto
+{
+    public string Name { get; init; } = string.Empty;
+    public string? Description { get; init; }
+}

EcommerceApi/Ecommerce.Core/DTOs/Category/UpdateCategoryDto.cs

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+namespace Ecommerce.Core.DTOs.Category;
+
+public record UpdateCategoryDto
+{
+    public string Name { get; init; } = string.Empty;
+    public string? Description { get; init; }
+}

EcommerceApi/Ecommerce.Core/DTOs/Product/CreateProductDto.cs

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+namespace Ecommerce.Core.DTOs.Product;
+
+public record CreateProductDto
+{
+    public string Name { get; init; } = string.Empty;
+    public decimal Price { get; init; }
+    public int Quantity { get; init; } = 1;
+    public string? Description { get; init; }
+    public string? ImageUrl { get; init; }
+    public int CategoryId { get; init; }
+}

EcommerceApi/Ecommerce.Core/DTOs/Product/ProductDto.cs

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+namespace Ecommerce.Core.DTOs.Product;
+
+public record ProductDto
+{
+    public int Id { get; init; }
+    public string Name { get; init; } = string.Empty;
+    public decimal Price { get; init; }
+    public int Quantity { get; init; }
+    public string? Description { get; init; }
+    public string? ImageUrl { get; init; }
+    public int CategoryId { get; init; }
+    public string CategoryName { get; init; } = string.Empty;
+}

EcommerceApi/Ecommerce.Core/DTOs/Product/UpdateProductDto.cs

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+namespace Ecommerce.Core.DTOs.Product;
+
+public record UpdateProductDto
+{
+    public string Name { get; init; } = string.Empty;
+    public decimal Price { get; init; }
+    public int Quantity { get; init; }
+    public string? Description { get; init; }
+    public string? ImageUrl { get; init; }
+    public int CategoryId { get; init; }
+}

EcommerceApi/Ecommerce.Core/DTOs/Sale/CreateSaleDto.cs

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+namespace Ecommerce.Core.DTOs.Sale;
+
+public record CreateSaleDto
+{
+    public List<CreateSaleItemDto> Items { get; init; } = new();
+}
+
+public record CreateSaleItemDto
+{
+    public int ProductId { get; init; }
+    public int Quantity { get; init; }
+}

EcommerceApi/Ecommerce.Core/DTOs/Sale/SaleDto.cs

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+namespace Ecommerce.Core.DTOs.Sale;
+
+public record SaleDto
+{
+    public int Id { get; init; }
+    public DateTime CreationDate { get; init; }
+    public decimal TotalPrice { get; init; }
+    public List<SaleItemDto> Items { get; init; } = new();
+}
+
+public record SaleItemDto
+{
+    public int ProductId { get; init; }
+    public string? ProductName { get; init; } = string.Empty;
+    public decimal UnitPrice { get; init; }
+    public int Quantity { get; init; }
+}

EcommerceApi/Ecommerce.Core/Ecommerce.Core.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net10.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <PackageReference Include="FluentValidation" Version="12.1.1" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <Reference Include="Microsoft.Extensions.Identity.Stores">
+        <HintPath>..\..\..\..\..\..\..\..\..\..\home\basem\.nuget\packages\microsoft.extensions.identity.stores\10.0.3\lib\net10.0\Microsoft.Extensions.Identity.Stores.dll</HintPath>
+      </Reference>
+    </ItemGroup>
+
+</Project>

EcommerceApi/Ecommerce.Core/Interfaces/Common/IBaseEntity.cs

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+namespace Ecommerce.Core.Interfaces.Common;
+
+public interface IBaseEntity
+{
+    int Id { get; set; }
+}

EcommerceApi/Ecommerce.Core/Interfaces/Common/ISoftDeletable.cs

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+namespace Ecommerce.Core.Interfaces.Common;
+
+public interface ISoftDeletable
+{
+    bool IsDeleted { get; set; }
+    DateTime? DeletedAt { get; set; }
+}

EcommerceApi/Ecommerce.Core/Interfaces/Repositories/ICategoryRepository.cs

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+using Ecommerce.Core.Models;
+
+namespace Ecommerce.Core.Interfaces.Repositories;
+
+public interface ICategoryRepository : IGenericRepository<Category>
+{
+}

EcommerceApi/Ecommerce.Core/Interfaces/Repositories/IGenericRepository.cs

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+using System.Linq.Expressions;
+using Ecommerce.Core.Interfaces.Common;
+using Ecommerce.Core.Utilities;
+
+namespace Ecommerce.Core.Interfaces.Repositories;
+
+public interface IGenericRepository<T> where T : class
+{
+    Task<List<T>> GetAllAsync(params Expression<Func<T, object?>>[] includeProperties);
+    Task<List<T>> GetAllAsync(PaginationParams paginationParams, params Expression<Func<T, object?>>[] includeProperties);
+    Task<List<T>> FindAsync(Expression<Func<T, bool>> predicate, params Expression<Func<T, object?>>[] includeProperties);
+    Task<T?> GetByIdAsync(int id, params Expression<Func<T, object?>>[] includes);
+    void Add(T entity);
+    void Update(T entity);
+    void Delete(ISoftDeletable entity);
+}

EcommerceApi/Ecommerce.Core/Interfaces/Repositories/IProductRepository.cs

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+using Ecommerce.Core.Models;
+
+namespace Ecommerce.Core.Interfaces.Repositories;
+
+public interface IProductRepository : IGenericRepository<Product>
+{
+}

EcommerceApi/Ecommerce.Core/Interfaces/Repositories/ISaleRepository.cs

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+using Ecommerce.Core.Models;
+
+namespace Ecommerce.Core.Interfaces.Repositories;
+
+public interface ISaleRepository : IGenericRepository<Sale>
+{
+    Task<Sale?> GetSaleWithItemsAsync(int id);
+}

EcommerceApi/Ecommerce.Core/Interfaces/Repositories/IUnitOfWork.cs

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+using Ecommerce.Core.Models;
+
+namespace Ecommerce.Core.Interfaces.Repositories;
+
+public interface IUnitOfWork
+{
+    IProductRepository Products { get; }
+    ICategoryRepository Categories { get; }
+    ISaleRepository Sales { get; }
+
+    Task<int> CompleteAsync();
+    void Dispose();
+}

EcommerceApi/Ecommerce.Core/Interfaces/Services/IAuthService.cs

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+using Ecommerce.Core.DTOs.Auth;
+using Ecommerce.Core.Utilities;
+
+namespace Ecommerce.Core.Interfaces.Services;
+
+public interface IAuthService
+{
+    Task<Result<string>> Register(RegisterDto registerDto);
+    Task<Result<AuthResponseDto>> Login(LoginDto loginDto);
+}

EcommerceApi/Ecommerce.Core/Interfaces/Services/ICategoryService.cs

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+using Ecommerce.Core.DTOs.Category;
+using Ecommerce.Core.Utilities;
+
+namespace Ecommerce.Core.Interfaces.Services;
+
+public interface ICategoryService
+{
+    Task<Result<CategoryDto>> CreateCategoryAsync(CreateCategoryDto category);
+    Task<Result<CategoryDto>> GetCategoryAsync(int id);
+    Task<Result<IEnumerable<CategoryDto>>> GetAllCategoriesAsync();
+    Task<Result<CategoryDto>> UpdateCategoryAsync(int id, UpdateCategoryDto category);
+    Task<Result<bool>> DeleteCategoryAsync(int id);
+}

EcommerceApi/Ecommerce.Core/Interfaces/Services/IProductService.cs

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+using Ecommerce.Core.DTOs;
+using Ecommerce.Core.DTOs.Product;
+using Ecommerce.Core.Utilities;
+
+namespace Ecommerce.Core.Interfaces.Services;
+
+public interface IProductService
+{
+    Task<Result<ProductDto>> CreateProductAsync(CreateProductDto product);
+    Task<Result<ProductDto>> GetProductAsync(int id);
+    Task<Result<IEnumerable<ProductDto>>> GetAllProductsAsync(PaginationParams paginationParams);
+    Task<Result<ProductDto>> UpdateProductAsync(int id, UpdateProductDto product);
+    Task<Result<bool>> DeleteProductAsync(int id);
+}

EcommerceApi/Ecommerce.Core/Interfaces/Services/ISaleService.cs

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+using Ecommerce.Core.DTOs.Sale;
+using Ecommerce.Core.Utilities;
+
+namespace Ecommerce.Core.Interfaces.Services;
+
+public interface ISaleService
+{
+    Task<Result<SaleDto>> CreateSaleAsync(CreateSaleDto sale);
+    Task<Result<SaleDto>> GetSaleAsync(int id);
+    Task<Result<IEnumerable<SaleDto>>> GetAllSalesAsync(PaginationParams paginationParams);
+}

EcommerceApi/Ecommerce.Core/Models/ApplicationUser.cs

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+using Microsoft.AspNetCore.Identity;
+
+namespace Ecommerce.Core.Models;
+
+public class ApplicationUser : IdentityUser
+{
+    public string? Address { get; set; }
+}

EcommerceApi/Ecommerce.Core/Models/Category.cs

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+using Ecommerce.Core.Interfaces.Common;
+
+namespace Ecommerce.Core.Models;
+
+public class Category : IBaseEntity, ISoftDeletable
+{
+    public const int MaxNameLength = 50;
+    public const int MaxDescriptionLength = 250;
+
+    public int Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public string? Description { get; set; }
+    public ICollection<Product> Products { get; set; } = new List<Product>();
+
+    public bool IsDeleted { get; set; }
+    public DateTime? DeletedAt { get; set; }
+}

EcommerceApi/Ecommerce.Core/Models/Product.cs

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+using Ecommerce.Core.Interfaces.Common;
+
+namespace Ecommerce.Core.Models;
+
+public class Product : IBaseEntity, ISoftDeletable
+{
+    public const int MaxNameLength = 50;
+    public const int MaxDescriptionLength = 250;
+
+    public int Id { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public decimal Price { get; set; }
+    public int Quantity { get; set; }
+    public string? Description { get; set; }
+    public string? ImageUrl { get; set; }
+    public int CategoryId { get; set; }
+    public Category? Category { get; set; }
+
+    public bool IsDeleted { get; set; }
+    public DateTime? DeletedAt { get; set; }
+}

EcommerceApi/Ecommerce.Core/Models/Sale.cs

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+using Ecommerce.Core.Interfaces.Common;
+
+namespace Ecommerce.Core.Models;
+
+public class Sale : IBaseEntity, ISoftDeletable
+{
+    public int Id { get; set; }
+    public DateTime CreationDate { get; init; }
+    public decimal TotalPrice { get; init; }
+    public ICollection<SaleItem> Items { get; init; } = new List<SaleItem>();
+
+    public bool IsDeleted { get; set; }
+    public DateTime? DeletedAt { get; set; }
+}

EcommerceApi/Ecommerce.Core/Models/SaleItem.cs

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+namespace Ecommerce.Core.Models;
+
+public class SaleItem
+{
+    public int ProductId { get; set; }
+    public Product? Product { get; set; }
+    public int SaleId { get; set; }
+    public Sale? Sale { get; set; }
+    public decimal UnitPriceAtTimeOfSale { get; set; }
+    public int Quantity { get; set; }
+}

EcommerceApi/Ecommerce.Core/Utilities/PaginationParams.cs

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+namespace Ecommerce.Core.Utilities;
+
+public record PaginationParams
+{
+    private const int DefaultPageSize = 50;
+
+    public int PageNumber
+    {
+        get;
+        init => 
+            field = value > 0 ? value : 1;
+    } = 1;
+
+    public int PageSize
+    {
+        get;
+        init => 
+            field = value > DefaultPageSize ? DefaultPageSize : value;
+    } = 10;
+}