from django import forms
from django.conf.urls import url
from django.contrib import admin, messages
from django.core.exceptions import ValidationError
from django.shortcuts import redirect

from .models import *


class LocationAdminForm(forms.ModelForm):

    def clean_happy_hour_end(self):
        hh_start = self.cleaned_data['happy_hour_start']
        hh_end = self.cleaned_data['happy_hour_end']
        if hh_start is None and hh_end is not None:
            raise ValidationError('Start und Ende Zeit muss angegeben werden')
        if hh_start is not None and hh_end is None:
            raise ValidationError('Start und Ende Zeit muss angegeben werden')
        if hh_start is not None and hh_end is not None and not (hh_end > hh_start):
            raise ValidationError('Ende-Zeit muss nach Start-Zeit liegen')
        return self.cleaned_data['happy_hour_end']


@admin.register(Location)
class LocationAdmin(admin.ModelAdmin):
    form = LocationAdminForm
    list_display = ('code', 'name', 'city', 'happy_hour_start', 'happy_hour_end')
    fields = ['users', 'code', 'happy_hour_start', 'happy_hour_end', 'name', 'street', 'plz', 'city', 'phone', 'email',
              'url', ]


@admin.register(Client)
class ClientAdmin(admin.ModelAdmin):
    list_display = ('uuid', 'location', 'report_user', 'last_seen')
    fields = ['location', 'uuid', 'report_user', 'last_seen']


@admin.register(ClientData)
class ClientDataAdmin(admin.ModelAdmin):
    list_display = ('uuid', 'last_seen')
    fields = ['location', 'last_seen']


@admin.register(LocationData)
class LocationDataAdmin(admin.ModelAdmin):
    def get_urls(self):
        urls = super().get_urls()
        my_urls = [
            url(r'^process_locationdata/$', self.admin_site.admin_view(self.process_locationdata),
                name='process_locationdata'),
        ]
        return my_urls + urls

    def process_locationdata(self, request):
        from .tasks import process_location_data
        process_location_data(sender=None)
        messages.success(request, 'Items processed.')
        return redirect('admin:billard_locationdata_changelist')

    list_display = ('client_id', 'desk_no', 'tst', 'on_off', 'processed', 'error_msg')
    list_filter = ('client_id', 'desk_no', 'processed')
    fields = ['client_id', 'desk_no', 'tst', 'on_off', 'processed', 'error_msg']


class DeskAdminForm(forms.ModelForm):

    def clean_desk_no(self):
        id = self.instance.id
        client = self.cleaned_data['client']
        desk_no = self.cleaned_data['desk_no']
        t = Desk.objects.filter(desk_no=desk_no, client=client).exclude(id=id)
        if t.count() > 0:
            raise ValidationError('Tischnummer bereits vergeben.')
        return self.cleaned_data['desk_no']


@admin.register(Desk)
class DeskAdmin(admin.ModelAdmin):
    form = DeskAdminForm
    list_display = ('client', 'desk_no', 'name', 'enabled', 'prize', 'prize_hh')


@admin.register(Accounting)
class AccountingAdmin(admin.ModelAdmin):
    list_display = ('desk', 'time_from', 'time_to', 'prize', 'billed', 'account_user', 'account_tst')
    list_filter = ('desk__client__location', 'account_user', 'account_tst', 'billed')

    def has_add_permission(self, request):
        if request.user.username == 'reinsle':
            return True
        return False