# Copyright 2017 AT&T Intellectual Property.  All other rights reserved.
#
# 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.
"""The entry point for the cli commands."""
import os
import logging
from urllib.parse import urlparse

import click
from drydock_provisioner.drydock_client.session import DrydockSession
from drydock_provisioner.drydock_client.client import DrydockClient
from .design import commands as design
from .part import commands as part
from .task import commands as task
from .node import commands as node

@click.group()
@click.option(
    '--debug/--no-debug', help='Enable or disable debugging', default=False)
@click.option(
    '--token',
    '-t',
    help='The auth token to be used',
    default=lambda: os.environ.get('DD_TOKEN', ''))
@click.option(
    '--url',
    '-u',
    help='The url of the running drydock instance',
    default=lambda: os.environ.get('DD_URL', ''))
@click.pass_context
def drydock(ctx, debug, token, url):
    """ Drydock CLI to invoke the running instance of the drydock API
    """
    if not ctx.obj:
        ctx.obj = {}

    ctx.obj['DEBUG'] = debug

    if not token:
        ctx.fail('Error: Token must be specified either by '
                 '--token or DD_TOKEN from the environment')

    if not url:
        ctx.fail('Error: URL must be specified either by '
                 '--url or DD_URL from the environment')

    # setup logging for the CLI
    # Setup root logger
    logger = logging.getLogger('drydock_cli')

    logger.setLevel(logging.DEBUG if debug else logging.INFO)
    logging_handler = logging.StreamHandler()
    formatter = logging.Formatter('%(asctime)s - %(levelname)s - '
                                  '%(filename)s:%(funcName)s - %(message)s')
    logging_handler.setFormatter(formatter)
    logger.addHandler(logging_handler)
    logger.debug('logging for cli initialized')

    # setup the drydock client using the passed parameters.
    url_parse_result = urlparse(url)
    logger.debug(url_parse_result)
    if not url_parse_result.scheme:
        ctx.fail('URL must specify a scheme and hostname, optionally a port')
    ctx.obj['CLIENT'] = DrydockClient(
        DrydockSession(
            scheme=url_parse_result.scheme,
            host=url_parse_result.netloc,
            token=token))


drydock.add_command(design.design)
drydock.add_command(part.part)
drydock.add_command(task.task)
drydock.add_command(node.node)