from __future__ import absolute_import, unicode_literals

import logging

from django.db.models.signals import post_save
from django.dispatch import receiver

import billard.utils as utils
from billard.models import LocationData, Client, Accounting, ClientData

log = logging.getLogger(__name__)


@receiver(post_save, sender=ClientData)
def process_client_data(sender, **kwargs):
    data = ClientData.objects.all().order_by('last_seen')
    for cd in data:
        client = Client.objects.get(uuid=cd.uuid)
        client.last_seen = cd.last_seen
        client.save()
        cd.delete()


@receiver(post_save, sender=LocationData)
def process_location_data(sender, **kwargs):
    log.info('Starte die Verarbeitung der Location-Data-Objecte')
    data = LocationData.objects.filter(processed=False).order_by('tst')
    for ld in data:
        try:
            cli = Client.objects.filter(uuid=ld.client_id, desks__desk_no=ld.desk_no)
            if cli.count() < 1:
                ld.processed = True
                ld.error_msg = 'No client object found. Stopp processing! {}, {}'.format(ld.client_id, ld.desk_no)
                ld.save()
                log.error(ld.error_msg)
            else:
                cli = cli[0]
                desk = cli.desks.filter(desk_no=ld.desk_no, enabled=True)
                if desk.count() != 1:
                    ld.processed = True
                    ld.error_msg = 'No desk object found. Stopp processing! {}, {}'.format(ld.client_id, ld.desk_no)
                    ld.save()
                    log.error(ld.error_msg)
                desk = desk[0]
                ac = desk.accounting_set.order_by('time_from').reverse()
                if ld.on_off:
                    acc = None
                    if ac.count() > 0 and ac[0].time_to is None:
                        log.error('Vorheriges Accounting nicht abgeschlossen: Desk_id {}, Accounting_id {}'
                                  .format(desk.id, ac[0].id))
                        acc = ac[0]
                    if acc is None:
                        acc = Accounting(
                            desk=desk,
                            time_from=ld.tst,
                        )
                    acc.save()
                    ld.delete()
                else:
                    if len(ac) > 0:
                        acc = ac[0]
                        acc.time_to = ld.tst
                        acc.prize, acc.prize_normal, acc.prize_hh = utils.get_prize_for(
                            start=acc.time_from,
                            end=ld.tst,
                            pph=desk.prize,
                            hh_start=cli.location.happy_hour_start,
                            hh_end=cli.location.happy_hour_end,
                            pphh=desk.prize_hh,
                        )
                        acc.reporter_uuid = cli.uuid
                        acc.save()
                        ld.delete()
                    else:
                        ld.processed = True
                        ld.error_msg = 'No existing accountings found. Stopp processing! {}, {}'.format(ld.client_id,
                                                                                                        ld.desk_no)
                        ld.save()
                        log.error(ld.error_msg)
        except:
            log.exception('', exc_info=True)


@receiver(post_save, sender=Accounting)
def process_accounting_data(sender, **kwargs):
    log.info('Starte die Verarbeitung der Accounting-Data-Objecte')
    data = Accounting.objects.filter(prize=0.0, reporter_uuid__isnull=True).exclude(time_to__isnull=True)
    data.delete()