import logging

import stripe
from asgiref.sync import sync_to_async
from django.conf import settings
from django.contrib.auth.mixins import LoginRequiredMixin
from django.http import JsonResponse
from django.shortcuts import redirect, render
from django.urls import reverse, reverse_lazy
from django.views import View
from django.views.generic.edit import CreateView

from core.forms import NewUserForm
from core.lib.notify import raw_sendmsg
from core.lib.products import assemble_plan_map
from core.models import Plan, Session

logger = logging.getLogger(__name__)

# Create your views here


class Home(LoginRequiredMixin, View):
    template_name = "index.html"

    def get(self, request):
        return render(request, self.template_name)


class Billing(LoginRequiredMixin, View):
    template_name = "billing.html"

    async def get(self, request):
        if not settings.STRIPE_ENABLED:
            return redirect(reverse("home"))
        plans = await sync_to_async(list)(Plan.objects.all())
        user_plans = await sync_to_async(list)(request.user.plans.all())
        context = {"plans": plans, "user_plans": user_plans}
        return render(request, self.template_name, context)


class Order(LoginRequiredMixin, View):
    async def get(self, request, plan_name):
        if not settings.STRIPE_ENABLED:
            return redirect(reverse("home"))
        plan = Plan.objects.get(name=plan_name)
        try:
            cast = {
                "payment_method_types": settings.ALLOWED_PAYMENT_METHODS,
                "mode": "subscription",
                "customer": request.user.stripe_id,
                "line_items": await assemble_plan_map(
                    product_id_filter=plan.product_id
                ),
                "success_url": request.build_absolute_uri(reverse("success")),
                "cancel_url": request.build_absolute_uri(reverse("cancel")),
            }
            if request.user.is_superuser:
                cast["discounts"] = [{"coupon": settings.STRIPE_ADMIN_COUPON}]
            session = stripe.checkout.Session.create(**cast)
            await Session.objects.acreate(user=request.user, session=session.id)
            return redirect(session.url)
            # return JsonResponse({'id': session.id})
        except Exception as e:
            # Raise a server error
            return JsonResponse({"error": str(e)}, status=500)


class Cancel(LoginRequiredMixin, View):
    async def get(self, request, plan_name):
        if not settings.STRIPE_ENABLED:
            return redirect(reverse("home"))
        plan = Plan.objects.get(name=plan_name)
        try:
            subscriptions = stripe.Subscription.list(
                customer=request.user.stripe_id, price=plan.product_id
            )
            for subscription in subscriptions["data"]:
                items = subscription["items"]["data"]
                for item in items:
                    stripe.Subscription.delete(item["subscription"])
                    return render(request, "subscriptioncancel.html", {"plan": plan})
                    # return JsonResponse({'id': session.id})
        except Exception as e:
            # Raise a server error
            logging.error(f"Error cancelling subscription for user: {e}")
            return JsonResponse({"error": "True"}, status=500)


class Signup(CreateView):
    form_class = NewUserForm
    success_url = reverse_lazy("two_factor:login")
    template_name = "registration/signup.html"

    def form_valid(self, form):
        """If the form is valid, save the associated model."""
        self.object = form.save()
        raw_sendmsg(
            f"New user signup: {self.object.username} - {self.object.email}",
            title="New user",
            topic=settings.NOTIFY_TOPIC,
        )
        return super().form_valid(form)

    def get(self, request, *args, **kwargs):
        if not settings.REGISTRATION_OPEN:
            return render(request, "registration/registration_closed.html")
        return super().get(request, *args, **kwargs)


class Portal(LoginRequiredMixin, View):
    async def get(self, request):
        if not settings.STRIPE_ENABLED:
            return redirect(reverse("home"))
        session = stripe.billing_portal.Session.create(
            customer=request.user.stripe_id,
            return_url=request.build_absolute_uri(reverse("billing")),
        )
        return redirect(session.url)