#!/bin/bash
# Health check script
# Verifies that the server installation is successful

set -e

SERVER_PATH="${1:-.}"
CHECK_NODE="${2:-false}"
CHECK_PHP="${3:-false}"
CHECK_NGINX="${4:-false}"

echo "Running health check for server at: $SERVER_PATH"

cd "$SERVER_PATH"

# Check if server directory exists
if [ ! -d "." ]; then
    echo "✗ Server directory not found"
    exit 1
fi
echo "✓ Server directory exists"

# Check Node.js installation
if [ "$CHECK_NODE" == "true" ]; then
    echo ""
    echo "Checking Node.js installation..."
    
    if command -v node &> /dev/null; then
        NODE_VERSION=$(node --version)
        echo "✓ Node.js installed: $NODE_VERSION"
    else
        echo "✗ Node.js not installed"
        exit 1
    fi
    
    if command -v npm &> /dev/null; then
        NPM_VERSION=$(npm --version)
        echo "✓ npm installed: $NPM_VERSION"
    else
        echo "✗ npm not installed"
        exit 1
    fi
    
    # Check if package.json exists
    if [ -f "package.json" ]; then
        echo "✓ package.json found"
        
        # Check if node_modules exists
        if [ -d "node_modules" ]; then
            echo "✓ Node.js dependencies installed"
        else
            echo "✗ Node.js dependencies not installed"
            exit 1
        fi
    fi
fi

# Check PHP installation
if [ "$CHECK_PHP" == "true" ]; then
    echo ""
    echo "Checking PHP installation..."
    
    if command -v php &> /dev/null; then
        PHP_VERSION=$(php --version | head -n 1)
        echo "✓ PHP installed: $PHP_VERSION"
    else
        echo "✗ PHP not installed"
        exit 1
    fi
    
    if command -v composer &> /dev/null; then
        COMPOSER_VERSION=$(composer --version | head -n 1)
        echo "✓ Composer installed: $COMPOSER_VERSION"
    else
        echo "✗ Composer not installed"
        exit 1
    fi
    
    # Check if composer.json exists
    if [ -f "composer.json" ]; then
        echo "✓ composer.json found"
        
        # Check if vendor directory exists
        if [ -d "vendor" ]; then
            echo "✓ PHP dependencies installed"
        else
            echo "✗ PHP dependencies not installed"
            exit 1
        fi
    fi
fi

# Check nginx installation
if [ "$CHECK_NGINX" == "true" ]; then
    echo ""
    echo "Checking nginx installation..."
    
    if command -v nginx &> /dev/null; then
        NGINX_VERSION=$(nginx -version 2>&1)
        echo "✓ nginx installed: $NGINX_VERSION"
    else
        echo "✗ nginx not installed"
        exit 1
    fi
    
    # Check if nginx is running
    if systemctl is-active --quiet nginx 2>/dev/null || pgrep nginx > /dev/null 2>&1; then
        echo "✓ nginx is running"
    else
        echo "⚠ nginx is installed but not running"
    fi
    
    # Check nginx configuration
    if sudo nginx -t &> /dev/null; then
        echo "✓ nginx configuration is valid"
    else
        echo "⚠ nginx configuration may have issues"
    fi
fi

echo ""
echo "✓ Health check passed!"
exit 0