# This file is part of dnmgmt, a number resource management system
# Licensed under GNU General Public License v3 or later
# Written by Sebastian Lohff (seba@someserver.de)

from django.shortcuts import render
from django.urls import reverse_lazy, reverse
from django.contrib.auth.decorators import login_required
from django.views.generic import DetailView, CreateView, UpdateView
from django.contrib.auth.mixins import LoginRequiredMixin
from django.db.models import Q

from whoisdb.generic import MntGenericMixin, DeleteCheckView

from .models import Domain, Nameserver, ReverseZone
from .forms import DomainForm, NameserverForm, ReverseZoneForm


@login_required
def overview(request):
	mnts = request.user.maintainer_set.all()

	# get all domains and nameservers
	domains = Domain.objects.filter(mnt_by__in=mnts).distinct()
	nameservers = Nameserver.objects.filter(mnt_by__in=mnts).distinct()
	reversezones = ReverseZone.objects.filter(Q(parentNet__mnt_by__in=mnts) | Q(parentNet__mnt_lower__in=mnts)).distinct()

	return render(request, "domains/overview.html", {"mnts": mnts, "domains": domains, "nameservers": nameservers, 'reversezones': reversezones})


class DomainCreate(LoginRequiredMixin, CreateView):
	template_name = "domains/obj_create.html"
	form_class = DomainForm

	def get_form_kwargs(self, *args, **kwargs):
		kwargs = super(DomainCreate, self).get_form_kwargs(*args, **kwargs)
		kwargs["user"] = self.request.user

		return kwargs


class DomainCheck(LoginRequiredMixin, DetailView):
	model = Domain
	slug_field = "name"
	slug_url_kwarg = "domain"
	context_object_name = "domain"
	template_name = "domains/dns_check.html"

	def get_context_data(self, **kwargs):
		ctx = super(DomainCheck, self).get_context_data(**kwargs)
		ctx["key"] = self.object.name
		ctx["apiUrl"] = reverse("api:domain-check")

		return ctx


class DomainDetail(LoginRequiredMixin, DetailView):
	model = Domain
	slug_field = "name"
	slug_url_kwarg = "domain"
	context_object_name = "domain"

	template_name = "whoisdb/handle_show.html"


class DomainEdit(MntGenericMixin, LoginRequiredMixin, UpdateView):
	model = Domain
	form_class = DomainForm
	slug_field = "name"
	slug_url_kwarg = "domain"
	template_name = "domains/obj_edit.html"

	def get_form_kwargs(self, *args, **kwargs):
		kwargs = super(DomainEdit, self).get_form_kwargs(*args, **kwargs)
		kwargs["user"] = self.request.user
		return kwargs


class DomainDelete(MntGenericMixin, LoginRequiredMixin, DeleteCheckView):
	template_name = "domains/obj_delete.html"
	model = Domain
	slug_field = "name"
	slug_url_kwarg = "domain"
	success_url = reverse_lazy("domains:overview")


class NameserverCreate(LoginRequiredMixin, CreateView):
	template_name = "domains/obj_create.html"
	form_class = NameserverForm

	def get_form_kwargs(self, *args, **kwargs):
		kwargs = super(NameserverCreate, self).get_form_kwargs(*args, **kwargs)
		kwargs["user"] = self.request.user

		return kwargs


class NameserverDetail(LoginRequiredMixin, DetailView):
	model = Nameserver
	template_name = "whoisdb/handle_show.html"


class NameserverEdit(MntGenericMixin, LoginRequiredMixin, UpdateView):
	model = Nameserver
	form_class = NameserverForm
	template_name = "domains/obj_edit.html"

	def get_form_kwargs(self, *args, **kwargs):
		kwargs = super(NameserverEdit, self).get_form_kwargs(*args, **kwargs)
		kwargs["user"] = self.request.user
		return kwargs


class NameserverDelete(MntGenericMixin, LoginRequiredMixin, DeleteCheckView):
	template_name = "domains/obj_delete.html"
	model = Nameserver
	success_url = reverse_lazy("domains:overview")


class ReverseZoneCreate(LoginRequiredMixin, CreateView):
	template_name = "domains/obj_create.html"
	form_class = ReverseZoneForm

	def get_form_kwargs(self, *args, **kwargs):
		kwargs = super(ReverseZoneCreate, self).get_form_kwargs(*args, **kwargs)
		kwargs["user"] = self.request.user

		return kwargs


class ReverseZoneCheck(LoginRequiredMixin, DetailView):
	model = ReverseZone
	template_name = "domains/dns_check.html"

	def get_context_data(self, **kwargs):
		ctx = super(ReverseZoneCheck, self).get_context_data(**kwargs)
		ctx["key"] = self.object.id
		ctx["apiUrl"] = reverse("api:reversezone-check")

		return ctx

class ReverseZoneDetail(LoginRequiredMixin, DetailView):
	model = ReverseZone
	template_name = "whoisdb/handle_show.html"


class ReverseZoneEdit(MntGenericMixin, LoginRequiredMixin, UpdateView):
	model = ReverseZone
	form_class = ReverseZoneForm
	template_name = "domains/obj_edit.html"

	def get_form_kwargs(self, *args, **kwargs):
		kwargs = super(ReverseZoneEdit, self).get_form_kwargs(*args, **kwargs)
		kwargs["user"] = self.request.user

		if "initial" not in kwargs:
			kwargs["initial"] = {}

		kwargs["initial"]["prefix"] = self.object.prefix()
		return kwargs

	def get_queryset(self):
		mnts = self.request.user.maintainer_set.all()
		return ReverseZone.objects.filter(Q(parentNet__mnt_by__in=mnts) | Q(parentNet__mnt_lower__in=mnts)).distinct()


class ReverseZoneDelete(LoginRequiredMixin, DeleteCheckView):
	template_name = "domains/obj_delete.html"
	model = ReverseZone
	success_url = reverse_lazy("domains:overview")

	def get_queryset(self):
		mnts = self.request.user.maintainer_set.all()
		return ReverseZone.objects.filter(Q(parentNet__mnt_by__in=mnts) | Q(parentNet__mnt_lower__in=mnts)).distinct()