package com.project.code.Controller;

public class InventoryController {
// 1. Set Up the Controller Class:
//    - Annotate the class with `@RestController` to indicate that this is a REST controller, which handles HTTP requests and responses.
//    - Use `@RequestMapping("/inventory")` to set the base URL path for all methods in this controller. All endpoints related to inventory will be prefixed with `/inventory`.


// 2. Autowired Dependencies:
//    - Autowire necessary repositories and services:
//      - `ProductRepository` will be used to interact with product data (i.e., finding, updating products).
//      - `InventoryRepository` will handle CRUD operations related to the inventory.
//      - `ServiceClass` will help with the validation logic (e.g., validating product IDs and inventory data).


// 3. Define the `updateInventory` Method:
//    - This method handles HTTP PUT requests to update inventory for a product.
//    - It takes a `CombinedRequest` (containing `Product` and `Inventory`) in the request body.
//    - The product ID is validated, and if valid, the inventory is updated in the database.
//    - If the inventory exists, update it and return a success message. If not, return a message indicating no data available.


// 4. Define the `saveInventory` Method:
//    - This method handles HTTP POST requests to save a new inventory entry.
//    - It accepts an `Inventory` object in the request body.
//    - It first validates whether the inventory already exists. If it exists, it returns a message stating so. If it doesn’t exist, it saves the inventory and returns a success message.


// 5. Define the `getAllProducts` Method:
//    - This method handles HTTP GET requests to retrieve products for a specific store.
//    - It uses the `storeId` as a path variable and fetches the list of products from the database for the given store.
//    - The products are returned in a `Map` with the key `"products"`.


// 6. Define the `getProductName` Method:
//    - This method handles HTTP GET requests to filter products by category and name.
//    - If either the category or name is `"null"`, adjust the filtering logic accordingly.
//    - Return the filtered products in the response with the key `"product"`.


// 7. Define the `searchProduct` Method:
//    - This method handles HTTP GET requests to search for products by name within a specific store.
//    - It uses `name` and `storeId` as parameters and searches for products that match the `name` in the specified store.
//    - The search results are returned in the response with the key `"product"`.


// 8. Define the `removeProduct` Method:
//    - This method handles HTTP DELETE requests to delete a product by its ID.
//    - It first validates if the product exists. If it does, it deletes the product from the `ProductRepository` and also removes the related inventory entry from the `InventoryRepository`.
//    - Returns a success message with the key `"message"` indicating successful deletion.


// 9. Define the `validateQuantity` Method:
//    - This method handles HTTP GET requests to validate if a specified quantity of a product is available in stock for a given store.
//    - It checks the inventory for the product in the specified store and compares it to the requested quantity.
//    - If sufficient stock is available, return `true`; otherwise, return `false`.

}
