#!/usr/bin/python

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import argparse
import logging
import os
import pathlib
import subprocess
import warnings

from git import exc
from git import Repo
from git import SymbolicReference

from jinja2 import PackageLoader
from jinja2 import Environment
from jinja2 import select_autoescape

from cookiecutter.main import cookiecutter

import otc_metadata.services

data = otc_metadata.services.Services()


def create_repo(repo, repo_dir, service):
    repo_owner, repo_name = repo['repo'].split('/')
    git_repo = None

    if repo_dir.exists():
        logging.debug(f"Repository {repo['repo']} is already existing")
        return

    logging.info(f"Creating repository {repo_owner}/{repo_name}")
    if repo['type'] == 'gitea':
        repo_url = (
            f"ssh://git@gitea.eco.tsi-dev.otc-service.com:2222/"
            f"{repo['repo']}"
        )
        git_fqdn = "gitea.eco.tsi-dev.otc-service.com"
    elif repo['type'] == 'github':
        repo_url = f"git@github.com:/{repo['repo']}"
        git_fqdn = "github.com"

    try:
        git_repo = Repo.clone_from(
            repo_url,
            repo_dir, branch='main')
    except Exception:
        logging.debug("Error")
        pass

    if git_repo:
        return

    if repo["type"] == "gitea":
        subprocess.run(
            args=["tea", "repo", "create",
                  "--name", repo_name,
                  "--owner", repo_owner,
                  ]
            )
    elif repo["type"] == "github":
        subprocess.run(
            args=["gh", "repo", "create",
                  repo["repo"], "--public",
                  ]
            )
    cookiecutter(
        template="https://github.com/opentelekomcloud/docs-cookiecutter",
        output_dir=repo_dir.parent,
        no_input=True,
        extra_context=dict(
            git_fqdn=git_fqdn,
            repo_group=repo_owner,
            repo_name=repo_name,
            project_short_description=(
                f"Documentation project for {service['service_title']} "
                "service"),
            overwrite_if_exists=True
        )
    )
    git_repo = Repo(repo_dir)
    git_repo.create_remote('origin', repo_url)
    git_repo.remotes.origin.fetch()
    git_repo.git.push('--set-upstream', 'origin', 'main')


def process_repositories(args, service):
    """Checkout repositories

    """
    logging.debug(f"Processing service {service}")
    workdir = pathlib.Path(args.work_dir)
    workdir.mkdir(exist_ok=True)

    for repo in service["repositories"]:
        logging.debug(f"Processing repository {repo}")
        repo_dir = pathlib.Path(
            workdir, repo["type"], repo["repo"]
        )

        if repo["environment"] != args.target_environment:
            continue

        checkout_exists = repo_dir.exists()
        logging.debug(f"Repository {repo} exists {checkout_exists}")
        repo_dir.parent.mkdir(parents=True, exist_ok=True)
        if True: # not checkout_exists:
            create_repo(repo, repo_dir, service)


def main():
    parser = argparse.ArgumentParser(
        description='Bootstrap repositories.')
    parser.add_argument(
        '--target-environment',
        required=True,
        help='Environment to be used as a source'
    )
    parser.add_argument(
        '--service-type',
        help='Service to update'
    )
    parser.add_argument(
        '--work-dir',
        required=True,
        help='Working directory to use for repository checkout.'
    )

    args = parser.parse_args()
    logging.basicConfig(level=logging.DEBUG)
    services = []
    if args.service_type:
        services = [data.service_dict.get(args.service_type)]
    else:
        services = data.all_services

    for service in services:
        process_repositories(args, service)


if __name__ == '__main__':
    main()