#!/bin/bash

# Game Tracker Deployment Script with improved error handling

set -e  # Exit on error

# Bold text function
bold() {
  echo -e "\033[1m$1\033[0m"
}

# Print section header
header() {
  echo
  bold "=== $1 ==="
}

# Print error message and exit
error() {
  echo -e "\033[31mERROR: $1\033[0m" >&2
  exit 1
}

# Check if a command exists
command_exists() {
  command -v "$1" >/dev/null 2>&1
}

header "Game Tracker Deployment"

# Check requirements
echo "Checking requirements..."

if ! command_exists docker; then
  error "Docker is not installed. Please install Docker first."
fi

if ! command_exists docker-compose; then
  error "Docker Compose is not installed. Please install Docker Compose first."
fi

# Default settings
DEPLOY_MODE=${DEPLOY_MODE:-local}

# Check if .env file exists
echo "Checking environment..."
if [ ! -f .env ]; then
  error "'.env' file not found! Please create a .env file with your IGDB credentials:\nIGDB_CLIENT_ID=your_client_id_here\nIGDB_CLIENT_SECRET=your_client_secret_here"
fi

# Make sure necessary directories exist
echo "Creating required directories..."
mkdir -p instance
mkdir -p nginx

# Check deployment mode
if [ "$1" = "--ssl" ] || [ "$DEPLOY_MODE" = "ssl" ]; then
  header "SSL Deployment (Production Mode)"
  
  # Check for domain name
  if [ -z "$DOMAIN" ]; then
    read -p "Enter your domain name (e.g., gametracker.example.com): " DOMAIN
    export DOMAIN
  fi
  
  # Check for email
  if [ -z "$EMAIL" ]; then
    read -p "Enter your email (for Let's Encrypt notifications): " EMAIL
    export EMAIL
  fi
  
  # Verify domain
  echo "Verifying domain '$DOMAIN' is properly configured..."
  host_ip=$(dig +short "$DOMAIN" 2>/dev/null || echo "")
  
  if [ -z "$host_ip" ]; then
    echo "WARNING: Could not resolve domain '$DOMAIN'. DNS might not be configured correctly."
    read -p "Continue anyway? (y/n): " answer
    if [[ "$answer" != [Yy]* ]]; then
      error "Deployment cancelled. Please configure DNS correctly and try again."
    fi
  else
    echo "Domain '$DOMAIN' resolves to IP: $host_ip"
  fi
  
  # Run the SSL setup script
  echo "Running SSL setup script..."
  ./init-letsencrypt.sh
  
  header "SSL Deployment Complete"
  echo "Your Game Tracker is now running at: https://$DOMAIN"
  echo ""
  echo "SSL certificates will auto-renew every 90 days"
  echo "To view logs: docker-compose logs -f"
  echo "To stop the server: docker-compose down"
  
else
  header "Local Deployment (Development Mode)"
  
  # Create a simpler nginx config for local deployment
  echo "Generating local nginx configuration..."
  cat > nginx/app.conf << EOF
server {
    listen 80;
    server_name localhost;
    
    location / {
        proxy_pass http://web:8000;
        proxy_set_header Host \$host;
        proxy_set_header X-Real-IP \$remote_addr;
        proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto \$scheme;
    }
}
EOF
  
  # Build and start Docker containers
  echo "Building and starting Docker containers..."
  docker-compose down 2>/dev/null || true  # Ignore errors if no containers are running
  docker-compose up --build -d
  
  # Check if containers started successfully
  if ! docker-compose ps | grep -q "Up"; then
    error "Failed to start containers. Check logs with 'docker-compose logs'."
  fi
  
  header "Local Deployment Complete"
  echo "Your Game Tracker is now running at: http://localhost"
  echo ""
  echo "To view logs: docker-compose logs -f"
  echo "To stop the server: docker-compose down"
  echo "To deploy with SSL: ./deploy.sh --ssl"
fi