#!/usr/bin/env python3
"""
Deployment script for MOTM Flask application to Google App Engine.
"""

import os
import subprocess
import sys

def deploy_to_app_engine():
    """Deploy the MOTM application to Google App Engine."""
    
    print("🚀 Starting deployment to Google App Engine...")
    
    # Check if gcloud is installed
    try:
        subprocess.run(['gcloud', '--version'], check=True, capture_output=True)
        print("✓ Google Cloud SDK is installed")
    except (subprocess.CalledProcessError, FileNotFoundError):
        print("❌ Google Cloud SDK not found. Please install it first:")
        print("   https://cloud.google.com/sdk/docs/install")
        return False
    
    # Check if user is authenticated
    try:
        subprocess.run(['gcloud', 'auth', 'list', '--filter=status:ACTIVE'], check=True, capture_output=True)
        print("✓ Google Cloud authentication verified")
    except subprocess.CalledProcessError:
        print("❌ Not authenticated with Google Cloud. Run 'gcloud auth login' first")
        return False
    
    # Check if app.yaml exists
    if not os.path.exists('app.yaml'):
        print("❌ app.yaml not found in current directory")
        return False
    
    print("✓ app.yaml found")
    
    # Deploy the application
    try:
        print("📦 Deploying application...")
        result = subprocess.run(['gcloud', 'app', 'deploy'], check=True)
        print("✅ Deployment completed successfully!")
        return True
    except subprocess.CalledProcessError as e:
        print(f"❌ Deployment failed: {e}")
        return False

if __name__ == "__main__":
    if len(sys.argv) > 1 and sys.argv[1] == '--deploy':
        success = deploy_to_app_engine()
        sys.exit(0 if success else 1)
    else:
        print("MOTM Application Deployment Script")
        print("=================================")
        print()
        print("Usage:")
        print("  python deploy.py --deploy    # Deploy to Google App Engine")
        print()
        print("Prerequisites:")
        print("  1. Install Google Cloud SDK")
        print("  2. Run 'gcloud auth login'")
        print("  3. Set your project: 'gcloud config set project YOUR_PROJECT_ID'")
        print("  4. Ensure app.yaml is configured correctly")