import logging

from flask import request, redirect, url_for, Blueprint
from flask_login import current_user

import features

from app import app, github_trigger
from auth.decorators import require_session_login
from auth.permissions import AdministerRepositoryPermission
from data import model
from endpoints.common import parse_repository_name
from endpoints.decorators import route_show_if
from util.http import abort


logger = logging.getLogger(__name__)
client = app.config['HTTPCLIENT']
githubtrigger = Blueprint('callback', __name__)


@githubtrigger.route('/github/callback/trigger/<repopath:repository>', methods=['GET'])
@route_show_if(features.GITHUB_BUILD)
@require_session_login
@parse_repository_name()
def attach_github_build_trigger(namespace_name, repo_name):
  permission = AdministerRepositoryPermission(namespace_name, repo_name)
  if permission.can():
    code = request.args.get('code')
    token = github_trigger.exchange_code_for_token(app.config, client, code)
    repo = model.repository.get_repository(namespace_name, repo_name)
    if not repo:
      msg = 'Invalid repository: %s/%s' % (namespace_name, repo_name)
      abort(404, message=msg)
    elif repo.kind.name != 'image':
      abort(501)

    trigger = model.build.create_build_trigger(repo, 'github', token, current_user.db_user())
    repo_path = '%s/%s' % (namespace_name, repo_name)
    full_url = url_for('web.buildtrigger', path=repo_path, trigger=trigger.uuid)

    logger.debug('Redirecting to full url: %s', full_url)
    return redirect(full_url)

  abort(403)