# Copyright 2014 StackStorm, Inc.
# All 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.
#

import argparse

from cliff.command import Command as BaseCommand
from cliff.lister import Lister as ListCommand
from cliff.show import ShowOne as ShowCommand

from mistralclient.openstack.common import log as logging
from mistralclient.api.workbooks import WorkbookManager

LOG = logging.getLogger(__name__)


def format(workbook=None):
    columns = (
        'Name',
        'Description',
        'Tags'
    )

    if workbook:
        data = (
            workbook.name,
            workbook.description or '<none>',
            ', '.join(workbook.tags) or '<none>'
        )
    else:
        data = (tuple('<none>' for _ in range(len(columns))),)

    return (columns, data)


class List(ListCommand):
    "List all workbooks"

    def take_action(self, parsed_args):
        data = [format(workbook)[1] for workbook
                in WorkbookManager(self.app.client).list()]

        if data:
            return (format()[0], data)
        else:
            return format()


class Get(ShowCommand):
    "Show specific workbook"

    def get_parser(self, prog_name):
        parser = super(Get, self).get_parser(prog_name)
        parser.add_argument(
            'name',
            help='Workbook name')
        return parser

    def take_action(self, parsed_args):
        workbook = WorkbookManager(self.app.client).get(parsed_args.name)

        return format(workbook)


class Create(ShowCommand):
    "Create new workbook"

    def get_parser(self, prog_name):
        parser = super(Create, self).get_parser(prog_name)
        parser.add_argument(
            'name',
            help='Workbook name')
        parser.add_argument(
            'description',
            nargs='?',
            help='Workbook description')
        parser.add_argument(
            'tags',
            nargs='?',
            help='Workbook tags separated by ","')
        parser.add_argument(
            'definition',
            nargs='?',
            type=argparse.FileType('r'),
            help='Workbook definition file'
        )

        return parser

    def take_action(self, parsed_args):
        workbook = WorkbookManager(self.app.client)\
            .create(parsed_args.name,
                    parsed_args.description,
                    str(parsed_args.tags).split(','))

        if parsed_args.definition:
            WorkbookManager(self.app.client)\
                .upload_definition(parsed_args.name,
                                   parsed_args.definition.read())

        return format(workbook)


class Delete(BaseCommand):
    "Delete workbook"

    def get_parser(self, prog_name):
        parser = super(Delete, self).get_parser(prog_name)
        parser.add_argument(
            'name',
            help='Workbook name')

        return parser

    def take_action(self, parsed_args):
        WorkbookManager(self.app.client).delete(parsed_args.name)


class Update(ShowCommand):
    "Update workbook"

    def get_parser(self, prog_name):
        parser = super(Update, self).get_parser(prog_name)
        parser.add_argument(
            'name',
            help='Workbook name')
        parser.add_argument(
            'description',
            nargs='?',
            help='Workbook description')
        parser.add_argument(
            'tags',
            nargs='*',
            help='Workbook tags')

        return parser

    def take_action(self, parsed_args):
        workbook = WorkbookManager(self.app.client)\
            .update(parsed_args.name,
                    parsed_args.description,
                    parsed_args.tags)

        return format(workbook)


class UploadDefinition(BaseCommand):
    "Upload workbook definition"

    def get_parser(self, prog_name):
        parser = super(UploadDefinition, self).get_parser(prog_name)
        parser.add_argument(
            'name',
            help='Workbook name')
        parser.add_argument(
            'path',
            type=argparse.FileType('r'),
            help='Workbook definition file')

        return parser

    def take_action(self, parsed_args):
        WorkbookManager(self.app.client)\
            .upload_definition(parsed_args.name,
                               parsed_args.path.read())


class GetDefinition(BaseCommand):
    "Show workbook definition"

    def get_parser(self, prog_name):
        parser = super(GetDefinition, self).get_parser(prog_name)
        parser.add_argument(
            'name',
            help='Workbook name')

        return parser

    def take_action(self, parsed_args):
        definition = WorkbookManager(self.app.client)\
            .get_definition(parsed_args.name)

        self.app.stdout.write(definition)