# SHOP API
Simple API (still WIP)

## Requires:
1. Redis
Simple redis installation, no further configuration needed

2. MariaDB (or MySQL)
Make sure a proper database is set up with `shop.sql`

## Running:
Gunicorn is the simplest way to run this project
```sh
gunicorn -w 4 -b HOST:PORT main:app
```

# Routes

## Hello World
### `GET /`
- **Description:** A simple route that returns a JSON message saying 'Hello, Flask!'.
- **Response:**
  - JSON with the following structure:
    ```json
    {
      "message": "Hello, Flask!"
    }
    ```
- **Status Code:**
  - 200: Success.


## Users
### `POST /register`
- **Description:** Register a new user.
- **Request Body:**
  - JSON with the following fields:
    - `username` (string): User's username.
    - `displayname` (string): User's display name.
    - `email` (string): User's email address.
    - `password` (string): User's password.
- **Response:**
  - JSON indicating the success of the registration.
- **Status Codes:**
  - 200: Success.
  - 400: Bad Request (if any required field is missing).

### `POST /login`
- **Description:** Log in a user.
- **Request Body:**
  - JSON with the following fields:
    - `username` (string): User's username.
    - `password` (string): User's password.
- **Response:**
  - JSON containing authentication token and user information.
- **Status Codes:**
  - 200: Success.
  - 400: Bad Request (if any required field is missing).

### `DELETE /logout`
- **Description:** Log out a user by invalidating the JWT token.
- **Authentication:**
  - Requires a valid JWT token.
- **Response:**
  - JSON indicating the success of the logout.
- **Status Codes:**
  - 200: Success.
  - 401: Unauthorized (if JWT token is missing or invalid).

### `PUT /update/username`
- **Description:** Update the username of the authenticated user.
- **Authentication:**
  - Requires a valid JWT token.
- **Request Body:**
  - JSON with the following field:
    - `new_username` (string): New username.
- **Response:**
  - JSON indicating the success of the username update.
- **Status Codes:**
  - 200: Success.
  - 400: Bad Request (if new_username is missing).
  - 401: Unauthorized (if JWT token is missing or invalid).

### `PUT /update/displayname`
- **Description:** Update the display name of the authenticated user.
- **Authentication:**
  - Requires a valid JWT token.
- **Request Body:**
  - JSON with the following field:
    - `new_displayname` (string): New display name.
- **Response:**
  - JSON indicating the success of the display name update.
- **Status Codes:**
  - 200: Success.
  - 400: Bad Request (if new_displayname is missing).
  - 401: Unauthorized (if JWT token is missing or invalid).

### `PUT /update/email`
- **Description:** Update the email address of the authenticated user.
- **Authentication:**
  - Requires a valid JWT token.
- **Request Body:**
  - JSON with the following field:
    - `new_email` (string): New email address.
- **Response:**
  - JSON indicating the success of the email update.
- **Status Codes:**
  - 200: Success.
  - 400: Bad Request (if new_email is missing).
  - 401: Unauthorized (if JWT token is missing or invalid).

### `PUT /update/password`
- **Description:** Update the password of the authenticated user.
- **Authentication:**
  - Requires a valid JWT token.
- **Request Body:**
  - JSON with the following field:
    - `new_password` (string): New password.
- **Response:**
  - JSON indicating the success of the password update.
- **Status Codes:**
  - 200: Success.
  - 400: Bad Request (if new_password is missing).
  - 401: Unauthorized (if JWT token is missing or invalid).

### `DELETE /delete`
- **Description:** Delete the account of the authenticated user.
- **Authentication:**
  - Requires a valid JWT token.
- **Response:**
  - JSON indicating the success of the account deletion.
- **Status Codes:**
  - 200: Success.
  - 401: Unauthorized (if JWT token is missing or invalid).

## Cart
### `GET /`
- **Description:** Retrieve the contents of the user's shopping cart.
- **Authentication:**
  - Requires a valid JWT token.
- **Response:**
  - JSON containing a list of dictionaries representing the cart contents.
- **Status Codes:**
  - 200: Success.
  - 401: Unauthorized (if JWT token is missing or invalid).

### `PUT /add/<int:product_id>`
- **Description:** Add a specified quantity of a product to the user's shopping cart.
- **Authentication:**
  - Requires a valid JWT token.
- **Parameters:**
  - `count` (optional, int): Quantity of the product to add. Defaults to 1.
- **Response:**
  - JSON indicating the success of adding the product to the cart.
- **Status Codes:**
  - 200: Success.
  - 400: Bad Request (if count is less than 1).
  - 401: Unauthorized (if JWT token is missing or invalid).

### `DELETE /remove/<int:product_id>`
- **Description:** Remove a specific product from the user's shopping cart.
- **Authentication:**
  - Requires a valid JWT token.
- **Response:**
  - JSON indicating the success of removing the product from the cart.
- **Status Codes:**
  - 200: Success.
  - 401: Unauthorized (if JWT token is missing or invalid).

### `PUT /update/<int:product_id>`
- **Description:** Update the quantity of a product in the user's shopping cart.
- **Authentication:**
  - Requires a valid JWT token.
- **Parameters:**
  - `count` (int): New quantity of the product.
- **Response:**
  - JSON indicating the success of updating the product quantity in the cart.
- **Status Codes:**
  - 200: Success.
  - 400: Bad Request (if count is missing or not a valid integer).
  - 401: Unauthorized (if JWT token is missing or invalid).

### `GET /purchase`
- **Description:** Complete a purchase, transferring items from the user's cart to the purchase history.
- **Authentication:**
  - Requires a valid JWT token.
- **Response:**
  - JSON indicating the success of the purchase.
- **Status Codes:**
  - 200: Success.
  - 401: Unauthorized (if JWT token is missing or invalid).

## Products
### `GET /get`
- **Description:** Retrieve a paginated list of products.
- **Parameters:**
  - `page` (optional, int): Page number for pagination. Defaults to 0.
- **Response:**
  - JSON containing a list of products.
- **Status Codes:**
  - 200: Success.
  - 400: Bad Request (if the page is less than 0).

### `GET /<int:id>`
- **Description:** Retrieve information about a specific product.
- **Parameters:**
  - `id` (int): Product identifier.
  - `fields` (optional, string): Comma-separated list of fields to retrieve (e.g., 'name,price,image').
- **Response:**
  - JSON containing information about the specified product.
- **Status Codes:**
  - 200: Success.
  - 400: Bad Request (if invalid fields are provided).

### `POST /create`
- **Description:** Create a new product listing.
- **Authentication:**
  - Requires a valid JWT token.
- **Request Body:**
  - JSON with the following fields:
    - `name` (string): Product name.
    - `price` (float): Product price.
- **Response:**
  - JSON indicating the success of the product listing creation.
- **Status Codes:**
  - 200: Success.
  - 400: Bad Request (if name or price is missing or if price is not a valid float).
  - 401: Unauthorized (if JWT token is missing or invalid).