import os
import sys


def convert_encoding(filepath):
    try:
        with open(filepath, 'r', encoding='cp1251', errors='strict') as f:
            content = f.read()
        
        with open(filepath, 'w', encoding='utf-8', errors='strict') as f:
            f.write(content)
            
        print(f"Success: {filepath}")
        
    except UnicodeDecodeError:
        print(f"Error: {filepath} - not cp1251 encoded")
    except Exception as e:
        print(f"Error: {filepath} - {str(e)}")


def process_directory(root_dir):
    if not os.path.isdir(root_dir):
        print(f"Error: '{root_dir}' is not a valid directory")
        sys.exit(1)

    for root, _, files in os.walk(root_dir):
        for file in files:
            if file.endswith(('.cue', '.log')):
                file_path = os.path.join(root, file)
                convert_encoding(file_path)

def execute(args):
    process_directory(args.directory)