#!/bin/bash

# Apache Deployment Script for Bike Service Application
# Make sure to run this script from the project root directory

set -e  # Exit on any error

echo "🚀 Starting Apache deployment..."

# Check if we're in the right directory
if [ ! -f "backend/artisan" ] || [ ! -f "frontend/package.json" ]; then
    echo "❌ Error: Please run this script from the project root directory"
    exit 1
fi

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

# Function to print colored output
print_status() {
    echo -e "${GREEN}[INFO]${NC} $1"
}

print_warning() {
    echo -e "${YELLOW}[WARNING]${NC} $1"
}

print_error() {
    echo -e "${RED}[ERROR]${NC} $1"
}

# Check if running on Ubuntu server
if [[ "$OSTYPE" != "linux-gnu"* ]]; then
    print_warning "This script is designed for Ubuntu servers. Some commands may not work on your system."
fi

# Check if running as root
if [[ $EUID -eq 0 ]]; then
    print_error "Please don't run this script as root. Use a regular user with sudo privileges."
    exit 1
fi

# Check if required commands exist
check_command() {
    if ! command -v $1 &> /dev/null; then
        print_error "$1 is not installed. Please install it first."
        exit 1
    fi
}

print_status "Checking required commands..."
check_command "php"
check_command "composer"
check_command "npm"
check_command "git"
check_command "mysql"

# Get current branch
CURRENT_BRANCH=$(git branch --show-current)
print_status "Current branch: $CURRENT_BRANCH"

# Ask for confirmation
read -p "Do you want to deploy from branch '$CURRENT_BRANCH'? (y/N): " -n 1 -r
echo
if [[ ! $REPLY =~ ^[Yy]$ ]]; then
    print_warning "Deployment cancelled."
    exit 0
fi

# Pull latest changes
print_status "Pulling latest changes from git..."
git pull origin $CURRENT_BRANCH

# Backend deployment
print_status "Deploying Laravel backend..."
cd backend

# Install/update dependencies
print_status "Installing Composer dependencies..."
composer install --no-dev --optimize-autoloader

# Check if .env exists, if not copy from example
if [ ! -f ".env" ]; then
    print_warning ".env file not found, copying from .env.example..."
    if [ -f ".env.example" ]; then
        cp .env.example .env
        print_warning "Please configure your .env file before continuing!"
        print_warning "Make sure to set up your MySQL database configuration."
        read -p "Press Enter after configuring .env file..."
    else
        print_error ".env.example file not found!"
        exit 1
    fi
fi

# Generate key if not set
if ! grep -q "APP_KEY=base64:" .env; then
    print_status "Generating application key..."
    php artisan key:generate
fi

# Check database connection
print_status "Testing database connection..."
if php artisan migrate:status > /dev/null 2>&1; then
    print_status "Database connection successful!"
else
    print_error "Database connection failed! Please check your .env configuration."
    print_warning "Make sure MySQL is running and your database credentials are correct."
    exit 1
fi

# Run migrations
print_status "Running database migrations..."
php artisan migrate --force

# Clear and rebuild caches
print_status "Clearing and rebuilding caches..."
php artisan config:clear
php artisan route:clear
php artisan view:clear
php artisan cache:clear

php artisan config:cache
php artisan route:cache
php artisan view:cache

# Set production environment
if ! grep -q "APP_ENV=production" .env; then
    print_status "Setting production environment..."
    sed -i 's/APP_ENV=.*/APP_ENV=production/' .env
fi

if ! grep -q "APP_DEBUG=false" .env; then
    print_status "Disabling debug mode..."
    sed -i 's/APP_DEBUG=.*/APP_DEBUG=false/' .env
fi

cd ..

# Frontend deployment
print_status "Deploying Vue.js frontend..."
cd frontend

# Install/update dependencies
print_status "Installing npm dependencies..."
npm install

# Build for production
print_status "Building frontend for production..."
npm run build

# Copy built files to Laravel public directory
print_status "Copying built files to Laravel public directory..."
if [ -d "dist" ]; then
    cp -r dist/* ../backend/public/
    print_status "Frontend files copied successfully"
else
    print_error "dist directory not found! Build may have failed."
    exit 1
fi

cd ..

# Set proper permissions
print_status "Setting proper permissions..."
if command -v sudo &> /dev/null; then
    sudo chown -R www-data:www-data backend/storage backend/bootstrap/cache
    sudo chmod -R 775 backend/storage backend/bootstrap/cache
    print_status "Permissions set successfully"
else
    print_warning "sudo not available, skipping permission changes"
fi

# Restart services (if running on server)
if command -v sudo &> /dev/null; then
    print_status "Restarting services..."
    
    # Check if Apache is running and restart it
    if sudo systemctl is-active --quiet apache2; then
        sudo systemctl restart apache2
        print_status "Apache restarted"
    else
        print_warning "Apache is not running. Please start it manually: sudo systemctl start apache2"
    fi
    
    # Check if MySQL is running
    if sudo systemctl is-active --quiet mysql; then
        print_status "MySQL is running"
    else
        print_warning "MySQL is not running. Please start it manually: sudo systemctl start mysql"
    fi
    
    # Check if queue worker service exists and restart it
    if sudo systemctl list-units --type=service | grep -q "bikeservice-queue"; then
        sudo systemctl restart bikeservice-queue
        print_status "Queue worker restarted"
    else
        print_warning "Queue worker service not found. You may need to set it up manually."
    fi
else
    print_warning "sudo not available, skipping service restarts"
fi

# Final checks
print_status "Running final checks..."

# Check if Laravel is working
cd backend
if php artisan --version &> /dev/null; then
    print_status "Laravel is working correctly"
else
    print_error "Laravel is not working correctly"
    exit 1
fi

# Check if frontend files are accessible
if [ -f "public/index.html" ]; then
    print_status "Frontend files are in place"
else
    print_error "Frontend files are missing"
    exit 1
fi

# Check Apache configuration
if command -v sudo &> /dev/null && command -v apache2ctl &> /dev/null; then
    print_status "Testing Apache configuration..."
    if sudo apache2ctl configtest > /dev/null 2>&1; then
        print_status "Apache configuration is valid"
    else
        print_warning "Apache configuration has issues. Run 'sudo apache2ctl configtest' for details."
    fi
fi

cd ..

echo
echo -e "${GREEN}✅ Apache deployment completed successfully!${NC}"
echo
echo "Next steps:"
echo "1. Test your application in the browser"
echo "2. Check application logs if there are any issues"
echo "3. Verify all features are working correctly"
echo "4. Set up SSL certificate if needed"
echo
echo "Useful commands:"
echo "- Check Laravel logs: tail -f backend/storage/logs/laravel.log"
echo "- Check Apache error logs: sudo tail -f /var/log/apache2/error.log"
echo "- Check Apache access logs: sudo tail -f /var/log/apache2/access.log"
echo "- Test Apache config: sudo apache2ctl configtest"
echo "- Restart Apache: sudo systemctl restart apache2"
echo "- Check MySQL status: sudo systemctl status mysql"
echo
echo "Database information:"
echo "- Make sure MySQL is running: sudo systemctl start mysql"
echo "- Check database connection: mysql -u your_username -p your_database"
echo
echo "Apache configuration:"
echo "- Virtual host: /etc/apache2/sites-available/bikeservice.conf"
echo "- Enable site: sudo a2ensite bikeservice.conf"
echo "- Disable default: sudo a2dissite 000-default.conf"