# Gym Backend (Spring Boot)

A Spring Boot backend application for a gym management system. This application provides RESTful APIs for managing users, gym classes and bookings.

## Requirements

- Java 17 or higher
- Maven 3.8+
- PostgreSQL

## Getting Started

### Running Locally

1. Clone the repository
2. Configure PostgreSQL database (default credentials in application.properties)
3. Run the application:

```bash
mvn spring-boot:run
```

The application will start at http://localhost:8080

### Using Docker

1. Build the Docker image:

```bash
docker build -t gym-backend .
```

2. Run the container:

```bash
docker run -p 8080:8080 gym-backend
```

## API Endpoints

### Users

- `GET /api/users`: Get all users
- `GET /api/users/{id}`: Get user by ID
- `POST /api/users`: Create new user
- `PUT /api/users/{id}`: Update user

### Gym Classes

- `GET /api/classes`: Get all classes
- `GET /api/classes/{id}`: Get class by ID
- `POST /api/classes`: Create new class
- `PUT /api/classes/{id}`: Update class
- `DELETE /api/classes/{id}`: Delete class

### Bookings

- `GET /api/bookings`: Get all bookings
- `GET /api/bookings/user/{userId}`: Get bookings by user ID
- `POST /api/bookings`: Create new booking
- `PUT /api/bookings/{id}/cancel`: Cancel booking

### File Upload

- `POST /api/upload`: Upload files (for profile pictures and class images)