How to call url for rest service?

Question

Java

Good evening, just starting to deal with the rest. How to correctly call the URL for an action (add a product to a client, remove a product from a client, etc.).
There are two tables. customer and product. Tied up mani to mani. To edit customer data, PUT /users/user is used, the same for products. The question arose of how to correctly add the action url for adding a product by the client?
After all, if you use users/user/?action=addproduct, then this is no longer rest

Answer 1

If your client is a seller. Then:
GET /api/v1/{userId}/products
GET /api/v1/{userId}/product/{id}
POST /api/v1/{userId}/product
PATCH /api/v1/{userId)/product /{id}
DELETE /api/v1/{userId}/product/{id}
If it's a customer, it's a good idea to add the cart entity .
GET /api/v1/cart
POST /api/v1/cart/item
PATCH /api/v1/cart/item/{id}
DELETE /api/v1/cart/item/{id
} id is not needed.
Orders:
GET /api/v1/{userId}/orders
GET/api/v1/{userId}/order/{id}
POST /api/v1/{userId}/order
PATCH /api/v1/{userId)/order/{id}
DELETE /api/v1/{userId}/ order/{id}
Dissolving endpoints via action is a bad idea.