import requests
import argparse
import time
from requests.adapters import HTTPAdapter
from urllib3.util.retry import Retry
from concurrent.futures import ThreadPoolExecutor, as_completed

# 使用方法: python clean-gitea-user.py --keep-users admin user1 --gitea-url http://gitea.example.com --api-token your_token

# 解析命令行参数
parser = argparse.ArgumentParser(description='清理 Gitea 用户和仓库，保留指定的用户及其仓库。')
parser.add_argument('--keep-users', nargs='+', required=True, help='要保留的用户列表，例如 --keep-users user1 user2')
parser.add_argument('--gitea-url', required=True, help='Gitea 服务器的 URL,例如 http://localhost:3000')
parser.add_argument('--api-token', required=True, help='Gitea API Token')

args = parser.parse_args()

# Gitea服务器 URL 和 API 访问 token
gitea_url = args.gitea_url
api_token = args.api_token

# 获取所有用户的API请求
users_api = f'{gitea_url}/api/v1/admin/users'  # 获取所有用户的 API URL
headers = {
    'Authorization': f'token {api_token}'  # 设置认证头，使用 API Token
}

# 创建带有重试机制的会话
session = requests.Session()
retry = Retry(total=5, backoff_factor=1, status_forcelist=[429, 500, 502, 503, 504])
adapter = HTTPAdapter(max_retries=retry)
session.mount('http://', adapter)
session.mount('https://', adapter)

# 删除指定用户的仓库（并发版本）
def delete_user_repositories(username):
    """
    获取并删除指定用户的所有仓库。
    :param username: 用户名
    """
    # 获取用户的仓库
    repos_api = f'{gitea_url}/api/v1/users/{username}/repos'  # 用户仓库 API URL
    response = session.get(repos_api, headers=headers)
    
    if response.status_code == 200:
        repos = response.json()
        with ThreadPoolExecutor(max_workers=5) as executor:  # 并发删除仓库
            futures = []
            for repo in repos:
                repo_name = repo['name']
                futures.append(executor.submit(delete_single_repo, username, repo_name))
            for future in as_completed(futures):
                try:
                    future.result()
                except Exception as e:
                    print(f'Error deleting repo: {e}')
    else:
        print(f'Failed to fetch repositories for {username}. Status code: {response.status_code}')

def delete_single_repo(username, repo_name):
    delete_repo_api = f'{gitea_url}/api/v1/repos/{username}/{repo_name}'
    delete_response = session.delete(delete_repo_api, headers=headers)
    if delete_response.status_code == 204:
        print(f'Repository {repo_name} deleted successfully.')
    else:
        print(f'Failed to delete repository {repo_name}. Status: {delete_response.status_code}')
    time.sleep(0.1)  # 减少延迟

# 删除用户
def delete_user(username):
    delete_user_api = f'{gitea_url}/api/v1/admin/users/{username}'
    delete_response = session.delete(delete_user_api, headers=headers)
    if delete_response.status_code == 204:
        print(f'User {username} deleted successfully.')
    else:
        print(f'Failed to delete user {username}. Status: {delete_response.status_code}')
    time.sleep(0.1)

# 获取所有用户并删除除指定用户外的用户及其仓库
response = session.get(users_api, headers=headers)

if response.status_code == 200:
    users = response.json()
    with ThreadPoolExecutor(max_workers=3) as executor:  # 并发处理用户
        futures = []
        for user in users:
            username = user['username']
            if username not in args.keep_users:
                print(f'Processing user: {username}')
                # 先删除仓库，再删除用户
                delete_user_repositories(username)
                futures.append(executor.submit(delete_user, username))
            else:
                print(f'User {username} is being kept.')
        for future in as_completed(futures):
            try:
                future.result()
            except Exception as e:
                print(f'Error deleting user: {e}')
else:
    print('Failed to fetch users. Status code:', response.status_code)