import random

from django.http import JsonResponse
from django.shortcuts import render
from django.views import View
from django.views.generic import ListView, TemplateView

from .forms import ContactForm
from .models import ContactSubmission, FAQEntry


class HomeView(TemplateView):
    template_name = "pages/home.html"


class AboutView(TemplateView):
    template_name = "pages/about.html"


class FAQView(ListView):
    model = FAQEntry
    template_name = "pages/faq.html"
    context_object_name = "faq_entries"
    queryset = FAQEntry.objects.filter(is_active=True)


class ContactView(View):
    template_name = "pages/contact.html"

    def _new_captcha(self, request):
        a, b = random.randint(1, 9), random.randint(1, 9)
        request.session["captcha_answer"] = a + b
        return f"{a} + {b}"

    def get(self, request, *args, **kwargs):
        return render(
            request,
            self.template_name,
            {"form": ContactForm(), "captcha_question": self._new_captcha(request)},
        )

    def post(self, request, *args, **kwargs):
        form = ContactForm(request.POST)
        expected = request.session.get("captcha_answer")
        captcha_question = self._new_captcha(request)

        captcha_ok = False
        try:
            captcha_ok = int(request.POST.get("captcha_answer", "")) == expected
        except (ValueError, TypeError):
            pass

        if form.is_valid() and captcha_ok:
            form.save()
            return JsonResponse({"success": True})

        errors: dict = {}
        if not captcha_ok:
            errors["captcha"] = ["Incorrect answer — please try again."]
        errors.update(
            {field: [str(e) for e in errs] for field, errs in form.errors.items()}
        )
        return JsonResponse(
            {"success": False, "errors": errors, "captcha_question": captcha_question},
            status=400,
        )