"""
Quick setup verification script for Video Highlight Extractor
Run this to verify your installation is complete.
"""

import sys

def check_dependencies():
    """Check if all required dependencies are installed."""
    
    print("🔍 Checking dependencies...\n")
    
    dependencies = {
        'streamlit': 'Streamlit framework',
        'cv2': 'OpenCV',
        'torch': 'PyTorch',
        'transformers': 'Hugging Face Transformers',
        'ultralytics': 'YOLOv8',
        'clip': 'OpenAI CLIP',
        'PIL': 'Pillow',
        'numpy': 'NumPy',
        'sklearn': 'scikit-learn'
    }
    
    missing = []
    
    for module, name in dependencies.items():
        try:
            if module == 'cv2':
                import cv2
            elif module == 'clip':
                import clip
            else:
                __import__(module)
            print(f"✅ {name}")
        except ImportError:
            print(f"❌ {name} - NOT FOUND")
            missing.append(name)
    
    print()
    
    # Check optional dependencies
    print("📦 Optional dependencies:")
    try:
        from decord import VideoReader
        print("✅ Decord (GPU-accelerated video decoding)")
    except ImportError:
        print("⚠️  Decord - Not installed (will use OpenCV fallback)")
    
    try:
        from scenedetect import detect
        print("✅ PySceneDetect (Scene detection)")
    except ImportError:
        print("⚠️  PySceneDetect - Not installed (will use fallback)")
    
    print()
    
    # Check CUDA
    print("🖥️  GPU Support:")
    try:
        import torch
        if torch.cuda.is_available():
            print(f"✅ CUDA available - {torch.cuda.get_device_name(0)}")
            print(f"   CUDA version: {torch.version.cuda}")
        else:
            print("⚠️  CUDA not available - Will use CPU")
    except:
        print("⚠️  Could not check CUDA status")
    
    print()
    
    # Check FFmpeg
    print("🎬 FFmpeg:")
    import subprocess
    try:
        result = subprocess.run(
            ['ffmpeg', '-version'],
            capture_output=True,
            text=True,
            timeout=5
        )
        if result.returncode == 0:
            version_line = result.stdout.split('\n')[0]
            print(f"✅ {version_line}")
        else:
            print("❌ FFmpeg found but error checking version")
            missing.append("FFmpeg (functional)")
    except FileNotFoundError:
        print("❌ FFmpeg - NOT FOUND in PATH")
        missing.append("FFmpeg")
    except Exception as e:
        print(f"⚠️  FFmpeg check failed: {e}")
    
    print("\n" + "="*60)
    
    if missing:
        print(f"\n❌ Missing dependencies: {', '.join(missing)}")
        print("\n📝 To install missing dependencies:")
        print("   pip install -r requirements.txt")
        if "FFmpeg" in missing:
            print("\n📝 To install FFmpeg:")
            print("   Windows: choco install ffmpeg")
            print("   Linux:   sudo apt-get install ffmpeg")
            print("   Mac:     brew install ffmpeg")
        return False
    else:
        print("\n✅ All required dependencies installed!")
        print("\n🚀 Ready to run:")
        print("   streamlit run app.py")
        return True


def verify_structure():
    """Verify project structure is complete."""
    
    print("\n" + "="*60)
    print("\n📁 Verifying project structure...\n")
    
    from pathlib import Path
    
    required_files = [
        'app.py',
        'requirements.txt',
        'README.md',
        'pipeline/__init__.py',
        'pipeline/ingest.py',
        'pipeline/segmentation.py',
        'pipeline/aesthetic.py',
        'pipeline/objects.py',
        'pipeline/vlm.py',
        'pipeline/scoring.py',
        'pipeline/selector.py',
        'utils/__init__.py',
        'utils/config.py',
        'utils/video_utils.py',
        'utils/similarity.py'
    ]
    
    required_dirs = [
        'outputs/frames',
        'outputs/video'
    ]
    
    missing_files = []
    
    for file in required_files:
        if Path(file).exists():
            print(f"✅ {file}")
        else:
            print(f"❌ {file} - MISSING")
            missing_files.append(file)
    
    for dir_path in required_dirs:
        if Path(dir_path).exists():
            print(f"✅ {dir_path}/")
        else:
            print(f"❌ {dir_path}/ - MISSING")
            missing_files.append(dir_path)
    
    print()
    
    if missing_files:
        print(f"❌ Missing files/directories: {len(missing_files)}")
        return False
    else:
        print("✅ All project files present!")
        return True


if __name__ == "__main__":
    print("="*60)
    print("🎬 VIDEO HIGHLIGHT EXTRACTOR - Setup Verification")
    print("="*60)
    print()
    
    deps_ok = check_dependencies()
    structure_ok = verify_structure()
    
    print("\n" + "="*60)
    
    if deps_ok and structure_ok:
        print("\n🎉 Setup complete! Your application is ready to use.")
        print("\n📚 Next steps:")
        print("   1. Run: streamlit run app.py")
        print("   2. Upload a video in the sidebar")
        print("   3. Configure settings and click 'Extract Highlights'")
        print("\n📖 See README.md for detailed documentation")
    else:
        print("\n⚠️  Setup incomplete. Please address the issues above.")
        sys.exit(1)
    
    print("\n" + "="*60)