import requests
import logging

class CreateBranch:
    def __init__(self, base_url, token, repo, current_branch):
        self.base_url = base_url
        self.headers = {
            "Authorization": f"token {token}",
            "Accept": "application/vnd.github.v3+json"
        }
        self.repo = repo
        self.current_branch = current_branch

        # Set up logging
        self.logger = logging.getLogger(__name__)
        self.logger.setLevel(logging.INFO)
        
        # Create a file handler
        file_handler = logging.FileHandler('create_branch.log')
        file_handler.setLevel(logging.INFO)
        
        # Create a console handler
        console_handler = logging.StreamHandler()
        console_handler.setLevel(logging.INFO)
        
        # Create a formatting for the logs
        formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
        file_handler.setFormatter(formatter)
        console_handler.setFormatter(formatter)
        
        # Add the handlers to the logger
        self.logger.addHandler(file_handler)
        self.logger.addHandler(console_handler)

    def __call__(self, branch_name, base_branch="main"):
        self.logger.info(f"Creating branch: {branch_name} from base: {base_branch}")
        url = f"{self.base_url}/repos/{self.repo}/git/refs"
        response = requests.get(f"{url}/heads/{base_branch}", headers=self.headers)
        if response.status_code != 200:
            error_message = f"Error getting base branch: {response.status_code}"
            self.logger.error(error_message)
            return error_message

        sha = response.json()["object"]["sha"]
        data = {
            "ref": f"refs/heads/{branch_name}",
            "sha": sha
        }
        response = requests.post(url, headers=self.headers, json=data)
        if response.status_code == 201:
            self.current_branch = branch_name
            success_message = f"Branch '{branch_name}' created successfully and set as current branch"
            self.logger.info(success_message)
            return success_message
        else:
            error_message = f"Error creating branch: {response.status_code}"
            self.logger.error(error_message)
            return error_message