# Copyright (c) 2014 Dark Secret Software Inc.
#
# 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.

from docopt import docopt
import prettytable
import requests


def remove_empty(kv):
    """Remove kv pairs from dictionary where value is empty."""
    return dict([(k, v) for k, v in kv.iteritems() if v])


def dump_response(keys, rows):
    for row in rows:
        x = prettytable.PrettyTable(["Property", "Value"])
        for key in keys:
            x.add_row([key, row.get(key)])
        print x


def get(url, cmd, params):
    final = "%s/%s" % (url, cmd)
    ret = requests.get(final, params=params)
    ret.raise_for_status()
    return ret


class Impl(object):
    def __init__(self, base_url, base_args, cmds, docs):
        self.base_url = base_url
        self.base_args = base_args
        self.cmds = cmds
        self.docs = docs

    def dispatch(self, cmdline):
        arguments = docopt(self.docs, argv=cmdline, help=False,
                           options_first=True)
        if self.base_args['--debug']:
            print arguments

        for key in self.cmds.keys():
            if arguments.get(key):
                self.cmds[key].cmdline(self, cmdline)