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)