# Unreal Chat API

The backend API for the Unreal Chat application, built with Mercurius, GraphQL, and Prisma.

## Features

- GraphQL API with Mercurius
- Real-time subscriptions for messages and rooms
- Prisma ORM with MariaDB
- User authentication
- Chat rooms and messaging

## Getting Started

### Prerequisites

- Node.js (v18 or later)
- npm (v10 or later)
- MariaDB or MySQL

### Installation

1. Install dependencies:

```bash
npm install
```

2. Set up the database:

Make sure you have MariaDB running and update the connection string in `prisma/.env` if needed.

3. Run Prisma migrations:

```bash
npm run prisma:migrate
```

4. Start the development server:

```bash
npm run dev
```

The API will be available at http://localhost:4000/graphql.

## Available Scripts

- `npm run dev` - Start the development server
- `npm run build` - Build the application
- `npm run start` - Start the production server
- `npm run prisma:generate` - Generate Prisma client
- `npm run prisma:migrate` - Run Prisma migrations
- `npm run prisma:studio` - Open Prisma Studio

## API Documentation

### Authentication

For development purposes, authentication is simplified. In a production environment, you would use JWT tokens.

### GraphQL Schema

The GraphQL schema includes the following main types:

- `User`: Represents a user in the system
- `Room`: Represents a chat room
- `Message`: Represents a message in a chat room

### Queries

- `me`: Get the current user
- `users`: Get all users
- `user(id: ID!)`: Get a user by ID
- `rooms`: Get all public rooms
- `room(id: ID!)`: Get a room by ID
- `messages(roomId: ID!)`: Get messages in a room

### Mutations

- `register(email: String!, username: String!, password: String!)`: Register a new user
- `login(email: String!, password: String!)`: Login a user
- `createRoom(name: String!, description: String, isPrivate: Boolean)`: Create a new room
- `joinRoom(roomId: ID!)`: Join a room
- `leaveRoom(roomId: ID!)`: Leave a room
- `sendMessage(content: String!, roomId: ID!)`: Send a message to a room

### Subscriptions

- `messageAdded(roomId: ID!)`: Subscribe to new messages in a room
- `roomAdded`: Subscribe to new rooms