'''
Copyright (C) 2021  Alexander "PapaTutuWawa"

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
'''
from collections import namedtuple

from mira.modules.janine.helpers import find_one

Warning_ = namedtuple('Warning_', ['id',
                                   'sent',
                                   'effective_from',
                                   'expires',
                                   'urgency',
                                   'sender',
                                   'headline',
                                   'description',
                                   'instruction',
                                   'landkreise'])


def stub_warning(id_):
    '''
    Returns a stubbed warning for loading warnings from disk.
    The only real attribute is the @id_ .
    '''
    return Warning_(id=id_,
                    sent='',
                    effective_from='',
                    expires='',
                    urgency='',
                    sender='',
                    headline='',
                    description='',
                    instruction='',
                    landkreise=[])

def to_warning(data):
    '''
    Returns a Warning given the raw data
    '''
    info = find_one(lambda x: 'headline' in x.keys(), data['info'])
    return Warning_(id=data['identifier'],
                    sent=data['sent'],
                    # Not all items have to have those
                    effective_from=info.get('effective', 'N/A'),
                    # Not all items have to have those
                    expires=info.get('expires', 'N/A'),
                    urgency=info['urgency'],
                    # Not all items have to have those
                    sender=info.get('senderName', 'N/A'),
                    headline=info['headline'],
                    description=info['description'],
                    instruction=info.get('instruction', ''),
                    landkreise=get_landkreise(data))

def get_landkreise(data):
    '''
    Returns the list of Landkreise relevant to the warning in @data
    '''
    info = find_one(lambda e: 'area' in e.keys(), data['info'])
    geocode = find_one(lambda e: 'geocode' in e.keys(), info['area'])

    # Note: Some items may have multiple Landkreise
    return [e['valueName'] for e in geocode['geocode']]

def parse_data(data):
    '''
    Reads the remote response, parses it and returns a list of warnings.
    '''
    return [to_warning(el) for el in data]