#!/usr/bin/env python3
"""
Final verification script to ensure all changes have been properly applied
to convert the project from Gradio to FastAPI and fix Hugging Face Spaces deployment issues.
"""

import os
import re
import sys

def check_file_exists(filepath):
    """Check if a file exists"""
    if os.path.exists(filepath):
        print(f"✓ {filepath} exists")
        return True
    else:
        print(f"✗ {filepath} does not exist")
        return False

def check_dockerfile_content():
    """Check Dockerfile content for key fixes"""
    dockerfile_path = "Dockerfile"
    if not check_file_exists(dockerfile_path):
        return False
    
    with open(dockerfile_path, 'r', encoding='utf-8') as f:
        content = f.read()
    
    # Check for conditional script execution
    if 'if [ -f "arabic_fonts_setup.sh" ]' in content:
        print("✓ Dockerfile has conditional Arabic font setup script execution")
    else:
        print("✗ Dockerfile missing conditional Arabic font setup script execution")
        return False
    
    # Check for Java dependencies
    if 'libreoffice-java-common' in content and 'openjdk-11-jre-headless' in content:
        print("✓ Dockerfile includes Java dependencies for LibreOffice")
    else:
        print("✗ Dockerfile missing Java dependencies for LibreOffice")
        return False
    
    return True

def check_dockerignore_content():
    """Check .dockerignore content for key fixes"""
    dockerignore_path = ".dockerignore"
    if not check_file_exists(dockerignore_path):
        return False
    
    with open(dockerignore_path, 'r', encoding='utf-8') as f:
        content = f.read()
    
    # Check that requirements.txt is not excluded
    lines = content.split('\n')
    for line in lines:
        # Skip comments and empty lines
        if line.strip().startswith('#') or not line.strip():
            continue
        # Check if the line excludes requirements.txt
        if 'requirements.txt' in line and not line.strip().startswith('#'):
            print("✗ .dockerignore explicitly excludes requirements.txt")
            return False
    
    print("✓ .dockerignore properly includes requirements.txt")
    return True

def check_packages_content():
    """Check packages.txt content for key fixes"""
    packages_path = "packages.txt"
    if not check_file_exists(packages_path):
        return False
    
    with open(packages_path, 'r', encoding='utf-8') as f:
        content = f.read()
    
    # Check for Java dependencies
    if 'libreoffice-java-common' in content and 'openjdk-11-jre-headless' in content:
        print("✓ packages.txt includes Java dependencies for LibreOffice")
    else:
        print("✗ packages.txt missing Java dependencies for LibreOffice")
        return False
    
    # Check for removed unavailable packages
    unavailable_packages = [
        'libreoffice-help-ar',
        'fonts-noto-naskh',
        'fonts-noto-kufi-arabic',
        'fonts-amiri',
        'fonts-scheherazade-new'
    ]
    
    removed_count = 0
    for package in unavailable_packages:
        if package not in content:
            removed_count += 1
    
    if removed_count == len(unavailable_packages):
        print("✓ packages.txt has removed all unavailable packages")
    else:
        print(f"✗ packages.txt still contains {len(unavailable_packages) - removed_count} unavailable packages")
        return False
    
    return True

def check_requirements_content():
    """Check requirements.txt content for FastAPI dependencies"""
    requirements_path = "requirements.txt"
    if not check_file_exists(requirements_path):
        return False
    
    with open(requirements_path, 'r', encoding='utf-8') as f:
        content = f.read()
    
    # Check for FastAPI dependencies
    if 'fastapi' in content and 'uvicorn' in content:
        print("✓ requirements.txt includes FastAPI dependencies")
    else:
        print("✗ requirements.txt missing FastAPI dependencies")
        return False
    
    # Check that Gradio is not present
    if 'gradio' not in content:
        print("✓ requirements.txt does not include Gradio")
    else:
        print("✗ requirements.txt still includes Gradio")
        return False
    
    return True

def check_readme_content():
    """Check README.md content for FastAPI references"""
    readme_path = "README.md"
    if not check_file_exists(readme_path):
        return False
    
    with open(readme_path, 'r', encoding='utf-8') as f:
        content = f.read()
    
    # Check that references to FastAPI are present
    if 'FastAPI' in content:
        print("✓ README.md mentions FastAPI")
    else:
        print("✗ README.md does not mention FastAPI")
        return False
    
    return True

def check_main_py_content():
    """Check main.py content for FastAPI implementation"""
    main_path = "main.py"
    if not check_file_exists(main_path):
        return False
    
    with open(main_path, 'r', encoding='utf-8') as f:
        content = f.read()
    
    # Check for FastAPI imports and implementation
    if 'from fastapi' in content and 'FastAPI(' in content:
        print("✓ main.py implements FastAPI")
    else:
        print("✗ main.py does not implement FastAPI properly")
        return False
    
    # Check that Gradio is not present
    if 'gradio' not in content.lower():
        print("✓ main.py does not include Gradio")
    else:
        print("✗ main.py still includes Gradio")
        return False
    
    return True

def check_static_files():
    """Check that static files exist for HTML frontend"""
    static_dir = "static"
    if not os.path.exists(static_dir):
        print("✗ static directory does not exist")
        return False
    
    # Check for index.html
    index_path = os.path.join(static_dir, "index.html")
    if check_file_exists(index_path):
        print("✓ static/index.html exists")
    else:
        return False
    
    # Since CSS and JS are inline in index.html, we don't need separate files
    print("✓ CSS and JavaScript are included inline in index.html")
    
    return True

def main():
    """Main verification function"""
    print("Starting final verification of project conversion...\n")
    
    checks = [
        ("Dockerfile content", check_dockerfile_content),
        (".dockerignore content", check_dockerignore_content),
        ("packages.txt content", check_packages_content),
        ("requirements.txt content", check_requirements_content),
        ("README.md content", check_readme_content),
        ("main.py content", check_main_py_content),
        ("Static files", check_static_files)
    ]
    
    all_passed = True
    for check_name, check_func in checks:
        print(f"\nChecking {check_name}:")
        if not check_func():
            all_passed = False
    
    print("\n" + "="*50)
    if all_passed:
        print("🎉 All verification checks passed!")
        print("The project has been successfully converted to FastAPI")
        print("and should deploy correctly to Hugging Face Spaces.")
    else:
        print("❌ Some verification checks failed.")
        print("Please review the issues above and make necessary corrections.")
    
    return all_passed

if __name__ == "__main__":
    success = main()
    sys.exit(0 if success else 1)