#!/usr/bin/env python3
"""
Cache clearing utility for LEDMatrix
This script allows manual clearing of specific cache keys or all cache data.
"""

import os
import sys
import argparse

# Add the src directory to the path so we can import our modules
sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'src'))

from cache_manager import CacheManager

def list_cache_keys(cache_manager):
    """List all available cache keys."""
    cache_dir = cache_manager.cache_dir
    if not cache_dir or not os.path.exists(cache_dir):
        print(f"Cache directory does not exist: {cache_dir}")
        return []
    
    cache_files = []
    for file in os.listdir(cache_dir):
        if file.endswith('.json'):
            cache_files.append(file[:-5])  # Remove .json extension
    
    return cache_files

def clear_specific_cache(cache_manager, key):
    """Clear a specific cache key."""
    try:
        cache_manager.clear_cache(key)
        print(f"✓ Cleared cache key: {key}")
        return True
    except Exception as e:
        print(f"✗ Error clearing cache key '{key}': {e}")
        return False

def clear_all_cache(cache_manager):
    """Clear all cache data."""
    try:
        cache_manager.clear_cache()
        print("✓ Cleared all cache data")
        return True
    except Exception as e:
        print(f"✗ Error clearing all cache: {e}")
        return False

def show_cache_info(cache_manager, key=None):
    """Show information about cache entries."""
    if key:
        try:
            data = cache_manager.get(key)
            if data is not None:
                print(f"Cache key '{key}' exists with data type: {type(data)}")
                if isinstance(data, dict):
                    print(f"  Keys: {list(data.keys())}")
                    if 'games' in data:
                        print(f"  Number of games: {len(data['games']) if isinstance(data['games'], dict) else 'N/A'}")
                elif isinstance(data, list):
                    print(f"  Number of items: {len(data)}")
                else:
                    print(f"  Data: {str(data)[:100]}...")
            else:
                print(f"Cache key '{key}' does not exist or is expired")
        except Exception as e:
            print(f"Error checking cache key '{key}': {e}")
    else:
        # Show all cache keys
        keys = list_cache_keys(cache_manager)
        if keys:
            print("Available cache keys:")
            for key in sorted(keys):
                print(f"  - {key}")
        else:
            print("No cache keys found")

def main():
    parser = argparse.ArgumentParser(description='Clear LEDMatrix cache data')
    parser.add_argument('--list', '-l', action='store_true', 
                       help='List all available cache keys')
    parser.add_argument('--clear-all', '-a', action='store_true',
                       help='Clear all cache data')
    parser.add_argument('--clear', '-c', type=str, metavar='KEY',
                       help='Clear a specific cache key')
    parser.add_argument('--info', '-i', type=str, metavar='KEY',
                       help='Show information about a specific cache key')
    
    args = parser.parse_args()
    
    # Initialize cache manager
    cache_manager = CacheManager()
    
    if args.list:
        show_cache_info(cache_manager)
    elif args.clear_all:
        print("Clearing all cache data...")
        clear_all_cache(cache_manager)
    elif args.clear:
        print(f"Clearing cache key: {args.clear}")
        clear_specific_cache(cache_manager, args.clear)
    elif args.info:
        show_cache_info(cache_manager, args.info)
    else:
        # Default: show available options
        print("LEDMatrix Cache Utility")
        print("=" * 30)
        print()
        print("Available commands:")
        print("  --list, -l          List all cache keys")
        print("  --clear-all, -a     Clear all cache data")
        print("  --clear KEY, -c     Clear specific cache key")
        print("  --info KEY, -i      Show info about cache key")
        print()
        print("Examples:")
        print("  python clear_cache.py --list")
        print("  python clear_cache.py --clear milb_live_api_data")
        print("  python clear_cache.py --clear-all")
        print("  python clear_cache.py --info milb_upcoming_api_data")
        print()
        
        # Show current cache status
        show_cache_info(cache_manager)

if __name__ == "__main__":
    main()