from django.contrib import messages
from django.contrib.auth.decorators import login_required
from django.http import HttpResponseRedirect
from django.shortcuts import render
from django.urls import reverse
from django.utils.decorators import method_decorator
from django.views.decorators.csrf import csrf_exempt
from django.views.generic import UpdateView, DetailView
from oauth2_provider.contrib.rest_framework import TokenHasScope, IsAuthenticatedOrTokenHasScope
from rest_framework import generics
from rest_framework.views import APIView

from .forms import ChargeRequestForm
from .models import ChargeRequest
from .serializers import ChargeRequestSerializer
from .constans import StateChoices
from ..gooyal_oauth2.utils import get_application


class ChargeRequestCreateApiView(generics.CreateAPIView):
    permission_classes = [IsAuthenticatedOrTokenHasScope]
    serializer_class = ChargeRequestSerializer
    required_scopes = ['wallet.wallet:get_balance']  # TODO: is it good scope?
    model = ChargeRequest

    def perform_create(self, serializer):
        user = self.request.user
        application = get_application(self.request)
        charge_request: ChargeRequest = serializer.save(user=user, application=application)

        # TODO: web view
        # charge_request.charge_wallet_balance()

@method_decorator(csrf_exempt, name='dispatch')
class ChargeRequestView(UpdateView):
    template_name = 'pg/charge-request.html'
    form_class = ChargeRequestForm
    # pk_url_kwarg = 'uuid'
    slug_field = 'uuid'
    slug_url_kwarg = 'uuid'

    def get_queryset(self):
        # return ChargeRequest.objects.all()
        # return Charge.objects.filter(state__in=[StateChoices.CREATED.value, StateChoices.SUCCESS.value])
        return ChargeRequest.objects.filter(state__in=[StateChoices.CREATED.value])

    def form_valid(self, form):
        self.object = form.save()
        charge_request: ChargeRequest = self.get_object()

        # try:
        charge_request.request_sale()
        pna_redirect_url = charge_request.get_pna_redirect_url()
        if pna_redirect_url:
            return HttpResponseRedirect(pna_redirect_url)
        else:
            messages.error(self.request, 'can not redirect to pna')
            # TODO: redirect to error page
            return HttpResponseRedirect(reverse('pg:charge-request-view', kwargs={'uuid': charge_request.uuid}))

    def get_success_url(self):
        return self.object.callback_url
        # return reverse('pg:charge-request-view', kwargs={'pk': self.object.pk})

@method_decorator(csrf_exempt, name='dispatch')
class ChargeConfirmView(UpdateView):
    template_name = 'pg/charge-confirm.html'
    form_class = ChargeRequestForm
    # pk_url_kwarg = 'uuid'
    slug_field = 'uuid'
    slug_url_kwarg = 'uuid'

    def get_queryset(self):
        return ChargeRequest.objects.all()
        # return Charge.objects.filter(state__in=[StateChoices.CREATED.value, StateChoices.SUCCESS.value])

    def get(self, request, *args, **kwargs):
        print('get')
        print(args)
        print(kwargs)
        self.object = self.get_object()
        context = self.get_context_data()
        messages.info(self.request, 'در پردازش صفحه خطایی وجود دارد.')

        return self.render_to_response(context)

    def post(self, request, *args, **kwargs):
        print("post")
        print(request.POST)
        print(args)
        print(kwargs)

        # post = <QueryDict: {'Token': ['NDEwMTI0Nzc0MDMzMA=='], 'OrderId': ['7'], 'TerminalNo': ['31127029'], 'RRN': ['511629156251'], 'status': ['0'], 'TspToken': ['00000000-0000-0000-0000-000000000000'], 'HashCardNumber': ['6008617E6BAB76997499446356F5C8B60288445650DD551FDF32007BCF2B14AF'], 'Amount': ['21,000'], 'SwAmount': [''], 'STraceNo': ['123232']}>

        if 'redirect-to-app' in request.POST:
            return super().post(request, *args, **kwargs)
        else:
            self.object = self.get_object()

            # post = <QueryDict: {'Token': ['NDEwMTI0Nzc0MDMzMA=='], 'OrderId': ['7'], 'TerminalNo': ['31127029'], 'RRN': ['511629156251'], 'status': ['0'], 'TspToken': ['00000000-0000-0000-0000-000000000000'], 'HashCardNumber': ['6008617E6BAB76997499446356F5C8B60288445650DD551FDF32007BCF2B14AF'], 'Amount': ['21,000'], 'SwAmount': [''], 'STraceNo': ['123232']}>
            if request.POST.get('status') == 0:
                try:
                    charge_request: ChargeRequest = self.get_object()
                    charge_request.charge_wallet_balance()
                    charge_request.confirm_sale()
                    messages.success(self.request, 'شارژ انجام شد')

                except Exception as e:
                    print(e)
                    messages.error(self.request, str(e))
            else:
                print(request.POST)
                messages.error(self.request, "نتیجه تراکنش از سمت درگاه دریافت نشد.")

            context = self.get_context_data(object=self.object)
            return self.render_to_response(context)


    # def form_valid(self, form):
        # self.object = form.save()
        # charge_request: ChargeRequest = self.get_object()
        # try:
        #
        #     # transaction = Transaction.objects.create(
        #     #     uuid=charge.uuid,
        #     #     payee_id=charge.user.pk,
        #     #     payee_type=1,
        #     #     payer_id=payer_pk,
        #     #     payer_type=2,
        #     #     amount=amount,
        #     #     details={'description': 'شارژ مجازی کیف پول'}
        #     # )
        #     # transaction.submit()
        #     # transaction.verify()
        #     # charge.change_state(from_state=StateChoices.PENDING.value, to_state=StateChoices.SUCCESS.value)
        #
        # except Exception as e:
        #     print(e)
        #     messages.error(self.request, 'خطایی رخ داده است')
        #     charge_request.change_state(from_state=StateChoices.PENDING.value, to_state=StateChoices.EXPECTED_FAILURE.value)
        #
        #     return HttpResponseRedirect(self.get_success_url())

    def get_success_url(self):
        return self.object.callback_url