#!/usr/bin/env python3
"""
file.compare - Compare two files and generate detailed diff reports showing line-by-line differences

Generated by meta.skill
"""

import os
import sys
import json
import yaml
from pathlib import Path
from typing import Dict, List, Any, Optional


from betty.config import BASE_DIR
from betty.logging_utils import setup_logger

logger = setup_logger(__name__)


class FileCompare:
    """
    Compare two files and generate detailed diff reports showing line-by-line differences
    """

    def __init__(self, base_dir: str = BASE_DIR):
        """Initialize skill"""
        self.base_dir = Path(base_dir)

    def execute(self, file_path_1: Optional[str] = None, file_path_2: Optional[str] = None, output_format_optional: Optional[str] = None) -> Dict[str, Any]:
        """
        Execute the skill

        Returns:
            Dict with execution results
        """
        try:
            logger.info("Executing file.compare...")

            # TODO: Implement skill logic here

            # Implementation notes:
            # Use Python's difflib to compare files line by line. Support multiple output formats: - unified: Standard unified diff format - context: Context diff format - html: HTML diff with color coding - json: Structured JSON with line-by-line changes Include statistics: - Total lines added - Total lines removed - Total lines modified - Percentage similarity Handle binary files by detecting and reporting as non-text.

            # Placeholder implementation
            result = {
                "ok": True,
                "status": "success",
                "message": "Skill executed successfully"
            }

            logger.info("Skill completed successfully")
            return result

        except Exception as e:
            logger.error(f"Error executing skill: {e}")
            return {
                "ok": False,
                "status": "failed",
                "error": str(e)
            }


def main():
    """CLI entry point"""
    import argparse

    parser = argparse.ArgumentParser(
        description="Compare two files and generate detailed diff reports showing line-by-line differences"
    )

    parser.add_argument(
        "--file-path-1",
        help="file_path_1"
    )
    parser.add_argument(
        "--file-path-2",
        help="file_path_2"
    )
    parser.add_argument(
        "--output-format-optional",
        help="output_format (optional)"
    )
    parser.add_argument(
        "--output-format",
        choices=["json", "yaml"],
        default="json",
        help="Output format"
    )

    args = parser.parse_args()

    # Create skill instance
    skill = FileCompare()

    # Execute skill
    result = skill.execute(
        file_path_1=args.file_path_1,
        file_path_2=args.file_path_2,
        output_format_optional=args.output_format_optional,
    )

    # Output result
    if args.output_format == "json":
        print(json.dumps(result, indent=2))
    else:
        print(yaml.dump(result, default_flow_style=False))

    # Exit with appropriate code
    sys.exit(0 if result.get("ok") else 1)


if __name__ == "__main__":
    main()