#!/usr/bin/env python3
"""
Quick start script to test the lane detection system
Creates a test video, processes it, and verifies the output
"""
import os
import sys
import tempfile


def main():
    print("=" * 60)
    print("OpenCV Lane Detection Demo - Quick Start")
    print("=" * 60)
    print()
    
    # Check imports
    print("1. Checking dependencies...")
    try:
        import cv2
        print(f"   ✓ OpenCV {cv2.__version__}")
    except ImportError:
        print("   ✗ OpenCV not found. Run: pip install opencv-python")
        sys.exit(1)
    
    try:
        import numpy as np
        print(f"   ✓ NumPy {np.__version__}")
    except ImportError:
        print("   ✗ NumPy not found. Run: pip install numpy")
        sys.exit(1)
    
    print()
    
    # Create test video
    print("2. Creating test video...")
    from create_test_video import create_test_video
    
    temp_dir = tempfile.gettempdir()
    input_video = os.path.join(temp_dir, "quickstart_input.mp4")
    output_video = os.path.join(temp_dir, "quickstart_output.mp4")
    
    create_test_video(input_video, duration_sec=2, fps=15)
    print()
    
    # Process video
    print("3. Processing video with lane detection...")
    from lane_detection import process_video
    
    success = process_video(input_video, output_video)
    
    if not success:
        print("   ✗ Processing failed!")
        sys.exit(1)
    
    print(f"   ✓ Processing complete!")
    print()
    
    # Verify output
    print("4. Verifying output...")
    if os.path.exists(output_video):
        size = os.path.getsize(output_video)
        print(f"   ✓ Output file created: {output_video}")
        print(f"   ✓ File size: {size:,} bytes")
    else:
        print("   ✗ Output file not found!")
        sys.exit(1)
    
    print()
    print("=" * 60)
    print("✅ SUCCESS! Lane detection system is working correctly.")
    print("=" * 60)
    print()
    print("Next steps:")
    print("  • Run Gradio UI: python app.py")
    print("  • Use CLI tool: python cli.py <input> <output>")
    print("  • Run tests: python test_lane_detection.py")
    print()


if __name__ == "__main__":
    try:
        main()
    except Exception as e:
        print(f"\n✗ Error: {e}")
        import traceback
        traceback.print_exc()
        sys.exit(1)