"""
Verification script for Camera Models Explorer setup
Checks all dependencies and system requirements
"""

import sys
import subprocess


def check_python_version():
    """Check Python version"""
    print("🐍 Checking Python version...")
    version = sys.version_info
    if version.major == 3 and version.minor >= 11:
        print(f"   ✅ Python {version.major}.{version.minor}.{version.micro} - OK")
        return True
    else:
        print(f"   ❌ Python {version.major}.{version.minor} - Need 3.11+")
        return False


def check_package(package_name, import_name=None):
    """Check if a package is installed"""
    if import_name is None:
        import_name = package_name

    try:
        __import__(import_name)
        print(f"   ✅ {package_name} - OK")
        return True
    except ImportError:
        print(f"   ❌ {package_name} - NOT FOUND")
        return False


def check_dependencies():
    """Check all required Python packages"""
    print("\n📦 Checking Python dependencies...")

    packages = [
        ("streamlit", "streamlit"),
        ("numpy", "numpy"),
        ("OpenCV", "cv2"),
        ("Pillow", "PIL"),
        ("matplotlib", "matplotlib"),
        ("huggingface_hub", "huggingface_hub"),
    ]

    results = []
    for pkg_name, import_name in packages:
        results.append(check_package(pkg_name, import_name))

    return all(results)


def check_streamlit():
    """Check if streamlit can import core components"""
    print("\n🎨 Checking Streamlit functionality...")
    try:
        import streamlit as st

        print("   ✅ Streamlit imports - OK")
        return True
    except Exception as e:
        print(f"   ❌ Streamlit error: {e}")
        return False


def check_cv2():
    """Check OpenCV functionality"""
    print("\n📷 Checking OpenCV functionality...")
    try:
        import cv2
        import numpy as np

        # Try basic operations
        test_img = np.zeros((100, 100, 3), dtype=np.uint8)
        result = cv2.cvtColor(test_img, cv2.COLOR_BGR2RGB)

        print("   ✅ OpenCV operations - OK")
        return True
    except Exception as e:
        print(f"   ❌ OpenCV error: {e}")
        return False


def check_huggingface():
    """Check HuggingFace Hub functionality"""
    print("\n🤗 Checking Hugging Face Hub...")
    try:
        from huggingface_hub import hf_hub_download, list_repo_files

        print("   ✅ Hugging Face Hub imports - OK")
        return True
    except Exception as e:
        print(f"   ❌ Hugging Face Hub error: {e}")
        return False


def main():
    """Run all checks"""
    print("=" * 50)
    print("📷 Camera Models Explorer - Setup Verification")
    print("=" * 50)

    checks = [
        ("Python Version", check_python_version),
        ("Dependencies", check_dependencies),
        ("Streamlit", check_streamlit),
        ("OpenCV", check_cv2),
        ("Hugging Face Hub", check_huggingface),
    ]

    results = []
    for name, check_fn in checks:
        try:
            result = check_fn()
            results.append(result)
        except Exception as e:
            print(f"\n❌ Error checking {name}: {e}")
            results.append(False)

    print("\n" + "=" * 50)

    if all(results):
        print("✅ All checks passed! You're ready to run the app.")
        print("\nStart the app with:")
        print("  make run")
        print("or")
        print("  streamlit run app.py")
        return 0
    else:
        print("❌ Some checks failed. Please install missing dependencies:")
        print("  pip install -r requirements.txt")
        return 1


if __name__ == "__main__":
    sys.exit(main())