import os
import shutil
from git import Repo

def clone_repo(repo_url, clone_dir='cloned_repo'):
    """
    Clones a GitHub repository to the local machine.
    
    :param repo_url: URL of the GitHub repository
    :param clone_dir: Directory where the repository will be cloned
    :return: List of markdown file paths
    """
    if os.path.exists(clone_dir):
        shutil.rmtree(clone_dir)
    Repo.clone_from(repo_url, clone_dir)
    markdown_files = []
    for root, _, files in os.walk(clone_dir):
        for file in files:
            if file.endswith('.md'):
                markdown_files.append(os.path.join(root, file))
    return markdown_files

def push_translated_files(repo_url, translated_files, clone_dir='cloned_repo'):
    """
    Pushes translated files back to the GitHub repository.
    
    :param repo_url: URL of the GitHub repository
    :param translated_files: List of translated file data
    :param clone_dir: Directory where the repository is cloned
    """
    repo = Repo(clone_dir)
    origin = repo.remote(name='origin')
    for file in translated_files:
        with open(os.path.join(clone_dir, file['filename']), 'w', encoding='utf-8') as f:
            f.write(file['content'])
    repo.index.add([file['filename'] for file in translated_files])
    repo.index.commit('Add translated files')
    origin.push()

def clean_local_repo(clone_dir='cloned_repo'):
    """
    Cleans up the local cloned repository.
    
    :param clone_dir: Directory where the repository is cloned
    """
    if os.path.exists(clone_dir):
        shutil.rmtree(clone_dir)