from datetime import datetime
#import models


def get_prize_for(start, end, pph=0):
    """
    calculate prize of billard table rental

    :param start: start datetime of rental
    :param end: end datetime of rental
    :param pph: prize per hour of rental
    :return: the calculated prize of rental
    """
    pps = pph / 3600
    time = (end - start).seconds
    prize = round((pps * time), 1)
    return prize


def process_location_data():
    pass
    #data = models.LocationData.objects.filter(processed=False)
    #for ld in data:
    #    cli = models.Client.objects.filter(uuid=ld.client_id)
    #    if cli.count() < 1:
    #        ld.processed = True
    #        ld.error_msg = 'No location object found. Stopp processing!'
    #        ld.save()
    #        # TODO Send error eMail to Admin
    #    else:
    #        cli = cli[0]
    #        ac = models.Accounting.objects.filter(client=cli, desk_no=ld.table_no).order_by('time_from').reverse()
    #        if ld.on_off:
    #            if ac.count() > 0 and ac[0].time_to is None:
    #                ac[0].time_to = datetime.now()
    #                ac[0].save()
    #                # TODO Send error eMail to Admin
    #            acc = models.Accounting(
    #                client=cli,
    #                desk_no=ld.table_no,
    #                time_from=ld.tst,
    #            )
    #            acc.save()
    #            ld.delete()
    #        else:
    #            acc = ac[0]
    #            acc.time_to = ld.tst
    #            acc.prize = get_prize_for(
    #                start=acc.time_from,
    #                end=ld.tst,
    #                pph=cli.desk1_prize_ht
    #            )
    #            acc.save()
    #            ld.delete()