# Ghost Chess

A Next.js chess application that implements both classic chess and a special variant called "Ghost Chess". Features a complete chess interface with piece movement, game state management, and different game modes.

## 🎮 Game Features

- **Classic Chess**: Standard chess rules with check, checkmate, and stalemate
- **Ghost Chess**: Special variant with forced captures and elimination-based win conditions
- Full chess piece movement and validation
- Castling and pawn promotion (auto-promotes to queen)
- Visual move highlighting for valid moves
- Move history tracking with algebraic notation
- Captured pieces tracking
- Game state management

## 🚀 Development

### Getting Started

First, run the development server:

```bash
npm run dev
# or
yarn dev
# or
pnpm dev
# or
bun dev
```

Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.

You can start editing the page by modifying `app/page.tsx`. The page auto-updates as you edit the file.

### Available Scripts

- `npm run dev` - Start development server with Turbo mode
- `npm run build` - Build production application  
- `npm run lint` - Run ESLint checks
- `npm start` - Start production server

## 🐳 Docker Deployment

### Prerequisites

- Docker and Docker Compose installed
- Oracle A1 instance or any Linux server
- Open ports: 80 (HTTP), 443 (HTTPS), 3000 (direct app access)

### 1. Server Setup (Oracle A1 Instance)

```bash
# Update system
sudo apt update && sudo apt upgrade -y

# Install Docker
sudo apt install -y docker.io docker-compose

# Start and enable Docker
sudo systemctl start docker
sudo systemctl enable docker

# Add user to docker group
sudo usermod -aG docker $USER

# Log out and back in for group changes to take effect
```

### 2. Deploy the Application

Clone the repository and navigate to the project directory:

```bash
git clone <your-repository-url> ghost-chess
cd ghost-chess
```

#### Option A: Simple Deployment (App Only)
```bash
# Deploy only the Next.js application on port 3000
./deploy.sh --no-nginx
```

#### Option B: Production Deployment with Nginx (Recommended)
```bash
# Deploy with Nginx reverse proxy on port 80
./deploy.sh
```

#### Option C: SSL/HTTPS Deployment
```bash
# First, add your SSL certificates to ./ssl/ directory
mkdir ssl
# Copy your cert.pem and key.pem to ./ssl/

# Deploy with HTTPS support
./deploy.sh --with-ssl
```

### 3. Deployment Script Options

The `deploy.sh` script supports several options:

- `--build-only`: Only build the Docker images without deploying
- `--no-nginx`: Deploy without Nginx reverse proxy (port 3000)
- `--with-ssl`: Deploy with SSL support (requires certificates in ./ssl/)
- `--help`: Show help message

### 4. Managing the Deployment

```bash
# Check container status
docker-compose ps

# View application logs
docker-compose logs -f ghost-chess

# View all logs
docker-compose logs -f

# Stop the application
docker-compose down

# Restart the application
docker-compose restart

# Update deployment (after code changes)
git pull
./deploy.sh
```

### 5. Access Your Application

After successful deployment:

- **App only**: `http://your-server-ip:3000`
- **With Nginx**: `http://your-server-ip`
- **With SSL**: `https://your-server-ip`

### 6. Firewall Configuration (Oracle Cloud)

Make sure to configure your Oracle Cloud security groups to allow:

- **Port 80** (HTTP) - if using Nginx
- **Port 443** (HTTPS) - if using SSL
- **Port 3000** - if deploying app only

### 7. SSL Certificate Setup (Optional)

For HTTPS deployment, place your SSL certificates in the `ssl` directory:

```bash
mkdir ssl
# Add your certificates:
# ssl/cert.pem - SSL certificate
# ssl/key.pem - Private key
```

You can obtain free SSL certificates from [Let's Encrypt](https://letsencrypt.org/) or use your existing certificates.

### Troubleshooting

#### Common Issues:

1. **Permission denied**: Make sure deploy script is executable
   ```bash
   chmod +x deploy.sh
   ```

2. **Port already in use**: Stop existing services or change ports in docker-compose.yml

3. **SSL certificate errors**: Verify certificate paths and permissions in ssl/ directory

4. **Container build failures**: Check Docker logs
   ```bash
   docker-compose logs ghost-chess
   ```

## 🛠 Technology Stack

- **Next.js 15** with App Router
- **React 19** with TypeScript
- **Tailwind CSS** for styling  
- **Radix UI** components (tabs, slots)
- **Lucide React** for icons
- **Docker** for containerization

## 📚 Learn More

To learn more about the technologies used:

- [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API
- [React Documentation](https://react.dev/) - learn React
- [Tailwind CSS](https://tailwindcss.com/) - utility-first CSS framework
- [Docker Documentation](https://docs.docker.com/) - containerization platform
