.Net Core Rest API | Layered Architecture with DDD

Create a product via http post in a net core rest api by scaffolding an api controller, injecting app db context, and posting a json body to api/product.

Learn how http put updates a product by id, validate id mismatch, return bad request or no content after save changes, and beware entity framework may create missing records.

Implement the repository pattern with IProductRepository and ProductRepository to perform CRUD via a database context, using dependency injection and addScoped.

Learn about data transfer objects dto to avoid exposing domain models in a net core rest api, by creating brand create dto, brand update dto, and brand dto.

Define a brand service interface with get, create, update, patch, delete, and existence checks; implement it with a brand repository and map between domain models and dtos.

Create a product model inheriting from the base model with name, brand ID, category ID, price, and stock quantity; define brand and category as foreign keys to support one-to-many relationships.

Build a product api with layered architecture and ddd, define product repository contract and generic repository, create dtos for create/update and product view, implement service and controller, test via swagger.

Learn how middleware sits between client requests and backend responses to modify requests and responses, including converting 500 errors to 400 bad requests for clarity.

Learn to secure a .NET core rest api with EF Core Identity by defining app user and user role classes, configuring identity stores, running migrations, and seeding default roles.

Register a workspace user via an input model with first name, last name, email, password, and role, using identity user manager to create, hash the password, and assign the role.

Learn the difference between basic and JWT authentication, implementing a client–server api with username and password verification, issuing a JWT token, and securing subsequent requests with token-based access and expiry.

Implement a login flow with email and password input, validate the user via the user manager, and return a login response containing the user ID and a JWT token.

Secure a .NET Core REST API by implementing JWT bearer authentication, role-based authorization, and Swagger security definitions, configuring issuer, audience, and signing keys to protect endpoints.

Model a sales domain with an order and order items, linked to the app user and total bill amount, and configure ef core with a composite key for order items.

Create the IOrderRepository under contract, make it public, implement OrderRepository in infrastructure with ApplicationDbContext, pass it to the base, and register the repository.

Define order create dto and related order item dto, validate user and products, calculate total bill with grouping, adjust stock, create order with items, expose secured post endpoint for customers.

Implement a gate API to fetch order details using projection, selecting only needed fields from order and order item data via get async.

Install api versioning packages, configure program.cs with default version and readers (uri segment, query string, header), enable swagger explorer, and split controllers into v1 and v2 exposing api/v1/brand and api/v2/brand.

Implement city log in net core rest api by installing city log, configuring appsettings and program.cs, and injecting logger in controllers to log information and warnings to daily log files.