🪑 Exercise: Develop a Furniture Management API

Objective:

Build a complete API for furniture sales, including stock management and shopping cart functionality, using Spring and Spring Data JPA.

Entities:

1. Create the Furniture entity with at least the following attributes:

   • id (UUID)
   • name (String)
   • description (String)
   • price (Double)
   • stock (int)

2. Create the CartItem entity with at least the following attributes:

   • id (UUID)
   • furniture (reference to Furniture)
   • quantity (int)

Repositories:

1. Create FurnitureRepository by extending JpaRepository<Furniture, UUID>.
2. Create CartItemRepository by extending JpaRepository<CartItem, UUID>.

Services:

1. Create FurnitureService with the following methods:

   • getAllFurniture()
   • saveFurniture()
   • getFurnitureById()
   • deleteFurniture()

2. Create CartService with the following methods:

   • getAllCartItems() (returns: cart item ID, furniture name, furniture description, furniture price, and quantity)
   • addCartItem()
   • removeCartItem()
   • clearCart() (empties the cart)

REST Endpoints:

Furniture:

GET     /api/furniture           → Get all furniture items
GET     /api/furniture/{id}      → Get a furniture item by ID
POST    /api/furniture           → Create/add a new furniture item
DELETE  /api/furniture/{id}      → Delete a furniture item by ID

Cart:

GET     /api/cart                → Get all items in the cart
POST    /api/cart/add            → Add a furniture item to the cart
DELETE  /api/cart/remove/{id}    → Remove a specific item from the cart by ID
DELETE  /api/cart/clear          → Clear the entire cart (delete all CartItems)