# 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
import logging

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

from mistralclient.api.v1.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)