from django.conf import settings
from django.contrib import messages
from django.contrib.auth.mixins import LoginRequiredMixin
from django.db.models import Sum
from django.http import HttpResponse, JsonResponse
from django.shortcuts import render, get_object_or_404
from django.utils import timezone
from django.utils.decorators import method_decorator
from django.views.decorators.csrf import csrf_exempt
from django.views.generic import DetailView, CreateView
from django.views.generic.base import View

from users.models import User
from .forms import WithDrawForm, TmpCheckOrderForm, TmpPaymentAvisoForm
from .models import InvoiceHistory, WithDraw, Transaction


class ScoreDetailView(DetailView):
    model = User
    template_name = 'score-detail.html'
    context_object_name = 'user_score'

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        user_score_balance = InvoiceHistory.objects.filter(user=self.get_object()).aggregate(Sum('sum'))
        context['user_score_balance'] = user_score_balance['sum__sum'] or 0
        context['form'] = WithDrawForm
        return context


class ScoreView(LoginRequiredMixin, View):
    template_name = 'score-detail.html'

    def get(self, request, *args, **kwargs):
        transaction = Transaction.objects.create(customer=request.user, type='add')
        user_score = get_object_or_404(User.objects, pk=kwargs.get('pk'))
        current_sum_info = InvoiceHistory.objects.filter(user=user_score).aggregate(Sum('sum'))
        user_score_balance = current_sum_info['sum__sum'] or 0

        return render(request, self.template_name, {
            'transaction': transaction,
            'YANDEX_MONEY': settings.YANDEX_MONEY,
            'user_score': user_score,
            'user_score_balance': user_score_balance,
        })


class AjaxableResponseMixin(object):
    def form_invalid(self, form):
        response = super().form_invalid(form)
        if self.request.is_ajax():
            return JsonResponse(form.errors, status=400)
        else:
            return response

    def form_valid(self, form):
        # import code; code.interact(local=dict(globals(), **locals()))
        response = super(AjaxableResponseMixin, self).form_valid(form)
        if self.request.is_ajax():
            messages.info(self.request, 'Ваша заявка на вывод средств принята!')
            data = {
                'pk': self.object.pk,
                'status': 'ok',
            }
            return JsonResponse(data)
        else:
            return response


# class WithDrawCreate(AjaxableResponseMixin, CreateView):
#     model = WithDraw
#     form_class = WithDrawForm
#     success_url = '/'

class WithDrawCreate(CreateView):
    model = WithDraw
    form_class = WithDrawForm

    def form_valid(self, form):
        if self.request.is_ajax():
            self.object = form.save()
            messages.info(self.request, 'Ваша заявка на вывод средств принята!')
            data = {
                'pk': self.object.pk,
                'status': 'ok',
            }
            return JsonResponse(data)
        return super().form_valid(form)

    def form_invalid(self, form):
        if self.request.is_ajax():
            return JsonResponse(form.errors, status=400)
        return super().form_invalid(form)


# Yandex Money ------------------------------------------------



class TmpCheckOrderView(View):
    form_class = TmpCheckOrderForm

    @method_decorator(csrf_exempt)
    def dispatch(self, request, *args, **kwargs):
        return super().dispatch(request, *args, **kwargs)

    def post(self, request, *args, **kwargs):
        form = self.form_class(request.POST)

        # trans = form.cleaned_data.get('transaction')

        if form.is_valid():
            res = """<?xml version="1.0" encoding="utf-8"?>
                <checkOrderResponse
                    performedDatetime="{date}"
                    code="0"
                    invoiceId="{invoice_id}"
                    shopId="{shop_id}"/>
            """.format(
                date=timezone.now().isoformat(),
                invoice_id=form.cleaned_data.get('invoiceId'),
                shop_id=form.cleaned_data.get('shopId'),
            )

            return HttpResponse(res, content_type='application/xml')
        else:
            res = """<?xml version="1.0" encoding="utf-8"?>
                <checkOrderResponse
                    performedDatetime="{date}"
                    code="1"
                    invoiceId="{invoice_id}"
                    shopId="{shop_id}"
                    message="Check order, validation error"
                    techMessage="Check order, validation error"/>
            """.format(
                date=timezone.now().isoformat(),
                invoice_id=form.cleaned_data.get('invoiceId'),
                shop_id=form.cleaned_data.get('shopId'),
            )

            return HttpResponse(res, content_type='application/xml')
            # return HttpResponse('<pre>{msg}</pre>'.format(msg=pformat(form.errors))) # Debug


class TmpPaymentAvisoView(View):
    form_class = TmpPaymentAvisoForm

    @method_decorator(csrf_exempt)
    def dispatch(self, request, *args, **kwargs):
        return super().dispatch(request, *args, **kwargs)

    def post(self, request, *args, **kwargs):
        form = self.form_class(request.POST)

        if form.is_valid():
            transaction = form.cleaned_data.get('transaction_id')
            transaction.complete = True
            transaction.sum = form.cleaned_data.get('orderSumAmount')
            transaction.save()

            res = """<?xml version="1.0" encoding="utf-8"?>
                <paymentAvisoResponse
                    performedDatetime="{date}"
                    code="0"
                    invoiceId="{invoice_id}"
                    shopId="{shop_id}"/>
            """.format(
                date=timezone.now().isoformat(),
                invoice_id=form.cleaned_data.get('invoiceId'),
                shop_id=form.cleaned_data.get('shopId'),
            )

            return HttpResponse(res, content_type='application/xml')
        else:
            res = """<?xml version="1.0" encoding="utf-8"?>
                <paymentAvisoResponse
                    performedDatetime="{date}"
                    code="1"
                    message="Payment aviso, validation error"
                    techMessage="Payment aviso, validation error"/>
            """.format(date=timezone.now().isoformat())

            return HttpResponse(res, content_type='application/xml')
            # return HttpResponse('<pre>{msg}</pre>'.format(msg=pformat(form.errors))) # Debug