pre-commit

#!/usr/bin/env python3
"""
Pre-commit hook to update copyright years in modified files.
This script is cross-platform compatible (Linux, macOS, Windows).
"""

import subprocess
import sys
from pathlib import Path

def main():
    """Run the copyright update script and stage changes."""
    try:
        # Get the root directory of the repo
        result = subprocess.run(
            ['git', 'rev-parse', '--show-toplevel'],
            capture_output=True,
            text=True,
            check=True
        )
        repo_root = Path(result.stdout.strip())
        
        # Run the update copyright script
        copyright_script = repo_root / 'scripts' / 'update_copyright.py'
        
        if not copyright_script.exists():
            # Fallback to bash script if Python version doesn't exist
            copyright_script = repo_root / 'scripts' / 'update_copyright.sh'
            if copyright_script.exists():
                subprocess.run(['bash', str(copyright_script)], check=True)
            else:
                print("Warning: Copyright update script not found", file=sys.stderr)
                return 0
        else:
            # Run in interactive mode (will show preview and ask for confirmation)
            result = subprocess.run([sys.executable, str(copyright_script)])
            
            # Check if there were any changes applied
            result = subprocess.run(
                ['git', 'diff', '--quiet'],
                capture_output=True
            )
            
            if result.returncode != 0:
                # There are changes, stage them
                print("\nStaging copyright updates...")
                subprocess.run(['git', 'add', '-u'], check=True)
        
        return 0
    
    except subprocess.CalledProcessError as e:
        print(f"Error running copyright update: {e}", file=sys.stderr)
        return 0  # Don't fail the commit
    except Exception as e:
        print(f"Unexpected error: {e}", file=sys.stderr)
        return 0  # Don't fail the commit

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