from django.shortcuts import render, redirect
from django.views.generic import DetailView, TemplateView
from django.http import HttpResponse
from django.views.decorators.csrf import csrf_exempt
from django.urls import reverse

from payment.models import Payment, PAYMENT_STATUS_AUTHORIZED, PAYMENT_STATUS_FAILURE, PAYMENT_STATUS_PENDING, PAYMENT_STATUS_REFUND, PAYMENT_STATUS_SUCCESS
from dbsettings.models import Setting

import stripe

# Create your views here.


class StatusView(DetailView):
    model = Payment
    template_name = "payment/status.html"


class StripeRedirectView(TemplateView):
    template_name = "payment/redirect.html"


class StripeRedirectJSView(DetailView):
    model = Payment
    template_name = "payment/redirect_stripe.js"


@csrf_exempt
def stripe_webhook(request):
    endpoint_secret = Setting.objects.get(key="stripe.webhook.secret").value # pylint: disable=no-member
    payload = request.body
    sig_header = request.META['HTTP_STRIPE_SIGNATURE']
    event = None

    try:
        event = stripe.Webhook.construct_event(
            payload, sig_header, endpoint_secret
        )
    except ValueError:
        # Invalid payload
        return HttpResponse(status=400)
    except stripe.error.SignatureVerificationError:
        # Invalid signature
        return HttpResponse(status=400)

    # Handle the checkout.session.completed event
    if event['type'] == 'checkout.session.completed':
        session = event['data']['object']
        payment = Payment.objects.get(session=session["id"])
        payment.session_status = event["type"]

    return HttpResponse(status=200)

def callback(request, pk):
    obj = Payment.objects.get(uuid=pk)
    if obj.status() in (PAYMENT_STATUS_AUTHORIZED, PAYMENT_STATUS_SUCCESS):
        return redirect(reverse("payment:status", args=[pk]))
    else:
        return obj.cancel()