import logging
import subprocess
import os
import shlex

from src.settings import GIT_PRIVATE_KEY_PATH

_logger = logging.getLogger(__name__)
_logger.addHandler(logging.NullHandler())

os.environ['GIT_SSH_COMMAND'] = f"ssh -i {shlex.quote(GIT_PRIVATE_KEY_PATH)} -o IdentitiesOnly=yes"


def _check_preconditions():
    assert subprocess.check_call(["git", "--version"]) == 0


def clone_repo(ssh_url: str, path: str):
    subprocess.check_call(["git", "clone", ssh_url, path], stdout=subprocess.DEVNULL)


def create_and_open_branch(repo_path: str, branch_name: str):
    subprocess.check_call(
        ["git", "checkout", "-b", branch_name], cwd=repo_path, stdout=subprocess.DEVNULL
    )


def commit_and_push(repo_path: str, commit_message: str):
    subprocess.check_call(["git", "add", "."], cwd=repo_path, stdout=subprocess.DEVNULL)
    subprocess.check_call(
        ["git", "commit", "-m", commit_message], cwd=repo_path, stdout=subprocess.DEVNULL
    )
    branches = subprocess.check_output(
        ["git", "branch"], cwd=repo_path
    ).decode("utf-8")
    current_branch = next(filter(lambda x: x.startswith("*"), branches.splitlines()))[1:].strip()
    _logger.info(f"pushing branch {current_branch} in repo {repo_path}")
    subprocess.check_call(
        ["git", "push", "--set-upstream", "origin", current_branch],
        cwd=repo_path,
        stdout=subprocess.DEVNULL,
    )


_check_preconditions()