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.generic import UpdateView
from oauth2_provider.contrib.rest_framework import TokenHasScope, IsAuthenticatedOrTokenHasScope
from rest_framework import generics
from rest_framework.views import APIView

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


class ChargeRequestApiView(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()


class ChargeView(UpdateView):
    template_name = 'pg/charge-request.html'
    form_class = ChargeForm

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

    def form_valid(self, form):
        self.object = form.save()
        charge_request: ChargeRequest = self.get_object()
        try:
            charge_request.charge_wallet_balance()
            # 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)
            messages.success(self.request, 'شارژ انجام شد')

        except:
            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 reverse('core:charge', kwargs={'pk': self.object.pk})