"""Command-line interface for the tagging system."""

import argparse
import sys
from pathlib import Path
from typing import Optional

from .config import load_config


def main():
    """Main entry point for the CLI."""
    parser = argparse.ArgumentParser(
        description="Comprehensive Tagging System for Obsidian Vaults"
    )
    
    parser.add_argument(
        "vault_path",
        type=str,
        help="Path to the Obsidian vault directory"
    )
    
    parser.add_argument(
        "--config",
        type=str,
        help="Path to configuration file (YAML or JSON)"
    )
    
    parser.add_argument(
        "--dry-run",
        action="store_true",
        help="Show what would be done without making changes"
    )
    
    parser.add_argument(
        "--verbose",
        "-v",
        action="store_true",
        help="Enable verbose output"
    )
    
    args = parser.parse_args()
    
    # Validate vault path
    vault_path = Path(args.vault_path)
    if not vault_path.exists():
        print(f"Error: Vault path '{vault_path}' does not exist")
        sys.exit(1)
    
    if not vault_path.is_dir():
        print(f"Error: Vault path '{vault_path}' is not a directory")
        sys.exit(1)
    
    # Load configuration
    config = load_config(args.config)
    
    if args.verbose:
        print(f"Vault path: {vault_path}")
        print(f"Configuration: {args.config or 'default'}")
        print(f"Dry run: {args.dry_run}")
    
    # TODO: Implement actual tagging logic in future tasks
    print("Tagging system setup complete!")
    print("Note: Core implementation will be added in subsequent tasks.")
    
    if args.dry_run:
        print("Dry run mode - no files would be modified")
    
    return 0


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