from django.shortcuts import render, get_object_or_404
from django.db.models import Q
from django.contrib.auth.decorators import login_required
from django.http import HttpResponseRedirect, Http404
from django.urls import reverse, reverse_lazy
from django.views.generic import DetailView, CreateView, UpdateView
from django.contrib.auth.mixins import LoginRequiredMixin
from django.contrib import messages
from formtools.wizard.views import SessionWizardView

from .models import Maintainer, Contact, InetNum, ASBlock, ASNumber
from .forms import MntForm, MntInitialForm, ContactForm, ContactInitialForm, InetNumForm, ASBlockForm, ASNumberForm
from .generic import DeleteCheckView, MntGenericMixin


@login_required
def createObjectOverview(request):
	mnts = request.user.maintainer_set.filter().all()
	netblocks = InetNum.objects.filter(Q(mnt_by__in=mnts) | Q(mnt_lower__in=mnts)).distinct()
	asblocks = ASBlock.objects.filter(Q(mnt_by__in=mnts) | Q(mnt_lower__in=mnts)).distinct()

	return render(request, "whoisdb/create_overview.html", {"netblocks": netblocks, "asblocks": asblocks})


@login_required
def dbDashboard(request):
	mnts = request.user.maintainer_set.filter(rir=False, lir=False).all()
	if request.GET.get("delegated", None):
		mnts = request.user.maintainer_set.all()
	hasDelegations = request.user.maintainer_set.filter(Q(rir=True) | Q(lir=True)).count() > 0

	contacts = Contact.objects.filter(mnt_by__in=mnts)
	netblocks = InetNum.objects.filter(Q(mnt_by__in=mnts) | Q(mnt_lower__in=mnts)).distinct()
	asblocks = ASBlock.objects.filter(Q(mnt_by__in=mnts) | Q(mnt_lower__in=mnts)).distinct()
	asnumbers = ASNumber.objects.filter(Q(mnt_by__in=mnts) | Q(mnt_lower__in=mnts)).distinct()
	mntForm = contactForm = None

	if mnts.count() == 0:
		mntForm = contactForm = None
		if request.method == "POST":
			mntForm = MntInitialForm(user=request.user, data=request.POST, prefix="mnt")
			contactForm = ContactInitialForm(user=request.user, data=request.POST, prefix="contact")
			if mntForm.is_valid() and contactForm.is_valid():
				mnt = mntForm.save(commit=False)
				mnt.handleAuto(request.user.username)
				mnt.save()

				contact = contactForm.save(commit=False)
				contact.handleAuto()
				contact.type = Contact.TYPE_PERSON
				contact.save()
				contact.mnt_by.add(mnt.id)
				contact.save()

				mnt.auth.add(request.user.id)
				mnt.admin_c.add(contact.id)
				mnt.save()

				return HttpResponseRedirect(reverse("whoisdb:dashboard"))
		else:
			mntForm = MntInitialForm(user=request.user, prefix="mnt", initial={'handle': 'AUTO', 'description': 'Primary maintainer of %s' % request.user.username})
			contactForm = ContactInitialForm(user=request.user, initial={'handle': 'AUTO', 'name': request.user.username.capitalize()}, prefix='contact')

	return render(request, "whoisdb/overview.html", {"mnts": mnts, "contacts": contacts, "mntForm": mntForm, "contactForm": contactForm, "netblocks": netblocks, "asblocks": asblocks, "asnumbers": asnumbers, 'hasDelegations': hasDelegations})


def showHandle(request, handle):
	# a) find handle
	models = [Contact, Maintainer, ASBlock, ASNumber, InetNum]
	obj = None

	for model in models:
		if handle.endswith(model.handleSuffix):
			obj = get_object_or_404(model, handle=handle)
			break

	if not obj:
		raise Http404("Handle object not found")

	return render(request, "whoisdb/handle_show.html", {"object": obj})


class MaintainerCreate(LoginRequiredMixin, CreateView):
	template_name = "whoisdb/obj_create.html"
	form_class = MntForm

	def get_form_kwargs(self, *args, **kwargs):
		kwargs = super(MaintainerCreate, self).get_form_kwargs(*args, **kwargs)
		kwargs["user"] = self.request.user
		kwargs["initial"] = {
			"handle": "AUTO",
		}

		return kwargs

	def form_valid(self, form):
		self.object = form.save(commit=False)
		self.object.handleAuto(self.request.user.username)
		self.object.save()
		self.object.auth.add(self.request.user)
		self.object.save()

		return super(MaintainerCreate, self).form_valid(form)


class MaintainerEdit(LoginRequiredMixin, UpdateView):
	template_name = "whoisdb/maintainer_edit.html"
	model = Maintainer
	form_class = MntForm
	slug_field = "handle"
	slug_url_kwarg = "handle"

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

	def get_queryset(self):
		return self.model.objects.filter(auth=self.request.user)


class MaintainerDelete(LoginRequiredMixin, DeleteCheckView):
	template_name = "whoisdb/obj_delete.html"
	model = Maintainer
	slug_field = "handle"
	slug_url_kwarg = "handle"
	success_url = reverse_lazy("whoisdb:dashboard")

	def get_queryset(self):
		return self.model.objects.filter(auth=self.request.user)


class MaintainerDetail(LoginRequiredMixin, DetailView):
	template_name = "whoisdb/handle_show.html"
	model = Maintainer
	slug_field = "handle"
	slug_url_kwarg = "handle"
	#context_object_name = "mnt"


class ContactDetail(DetailView):
	model = Contact
	slug_field = "handle"
	slug_url_kwarg = "handle"
	context_object_name = "contact"


class ContactEdit(MntGenericMixin, LoginRequiredMixin, UpdateView):
	template_name = "whoisdb/obj_edit.html"
	model = Contact
	form_class = ContactForm
	slug_field = "handle"
	slug_url_kwarg = "handle"

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


class ContactCreate(LoginRequiredMixin, CreateView):
	template_name = "whoisdb/obj_create.html"
	form_class = ContactForm

	def get_form_kwargs(self, *args, **kwargs):
		kwargs = super(ContactCreate, self).get_form_kwargs(*args, **kwargs)
		kwargs["user"] = self.request.user
		kwargs["initial"] = {
			"handle": "AUTO",
			"type": Contact.TYPE_PERSON
		}
		return kwargs


class ContactDelete(MntGenericMixin, LoginRequiredMixin, DeleteCheckView):
	template_name = "whoisdb/obj_delete.html"
	model = Contact
	slug_field = "handle"
	slug_url_kwarg = "handle"
	success_url = reverse_lazy("whoisdb:dashboard")


# InetNum
class InetNumCreate(LoginRequiredMixin, CreateView):
	template_name = "whoisdb/obj_create.html"
	form_class = InetNumForm

	def get_form_kwargs(self, *args, **kwargs):
		print("NOOOOOOOOOOOOOOOOOOOOOOOOOOOOT", args, kwargs)
		kwargs = super(InetNumCreate, self).get_form_kwargs(*args, **kwargs)
		kwargs["user"] = self.request.user
		kwargs["initial"] = {
			"handle": "AUTO",
		}

		return kwargs


class InetNumDetail(DetailView):
	model = InetNum
	slug_field = "handle"
	slug_url_kwarg = "handle"
	context_object_name = "inetnum"


class InetNumEdit(MntGenericMixin, LoginRequiredMixin, UpdateView):
	template_name = "whoisdb/obj_edit.html"
	model = InetNum
	form_class = InetNumForm
	slug_field = "handle"
	slug_url_kwarg = "handle"

	def get_form_kwargs(self, *args, **kwargs):
		kwargs = super(InetNumEdit, self).get_form_kwargs(*args, **kwargs)
		kwargs["user"] = self.request.user
		kwargs["initial"] = {'prefix': str(self.object.getNetwork())}

		return kwargs


class InetNumDelete(MntGenericMixin, LoginRequiredMixin, DeleteCheckView):
	template_name = "whoisdb/obj_delete.html"
	model = InetNum
	slug_field = "handle"
	slug_url_kwarg = "handle"
	success_url = reverse_lazy("whoisdb:dashboard")


# asblock
class ASBlockCreate(LoginRequiredMixin, CreateView):
	template_name = "whoisdb/obj_create.html"
	form_class = ASBlockForm

	def get_form_kwargs(self, *args, **kwargs):
		kwargs = super(ASBlockCreate, self).get_form_kwargs(*args, **kwargs)
		kwargs["user"] = self.request.user
		kwargs["initial"] = {
			"handle": "AUTO",
		}

		return kwargs


class ASBlockDetail(DetailView):
	model = ASBlock
	slug_field = "handle"
	slug_url_kwarg = "handle"
	context_object_name = "asblock"


class ASBlockEdit(MntGenericMixin, LoginRequiredMixin, UpdateView):
	template_name = "whoisdb/obj_edit.html"
	model = ASBlock
	form_class = ASBlockForm
	slug_field = "handle"
	slug_url_kwarg = "handle"

	def get_form_kwargs(self, *args, **kwargs):
		kwargs = super(ASBlockEdit, self).get_form_kwargs(*args, **kwargs)
		kwargs["user"] = self.request.user
		#kwargs["initial"] = {'prefix': str(self.object.getNetwork())}

		return kwargs


class ASBlockDelete(MntGenericMixin, LoginRequiredMixin, DeleteCheckView):
	template_name = "whoisdb/obj_delete.html"
	model = ASBlock
	slug_field = "handle"
	slug_url_kwarg = "handle"
	success_url = reverse_lazy("whoisdb:dashboard")


# asnumber
class ASNumberCreate(LoginRequiredMixin, CreateView):
	template_name = "whoisdb/obj_create.html"
	form_class = ASNumberForm

	def get_form_kwargs(self, *args, **kwargs):
		kwargs = super(ASNumberCreate, self).get_form_kwargs(*args, **kwargs)
		kwargs["user"] = self.request.user
		kwargs["initial"] = {
			"handle": "AUTO",
		}

		return kwargs


class ASNumberDetail(DetailView):
	model = ASNumber
	slug_field = "handle"
	slug_url_kwarg = "handle"
	context_object_name = "asnumber"


class ASNumberEdit(MntGenericMixin, LoginRequiredMixin, UpdateView):
	template_name = "whoisdb/obj_edit.html"
	model = ASNumber
	form_class = ASNumberForm
	slug_field = "handle"
	slug_url_kwarg = "handle"

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

		return kwargs


class ASNumberDelete(MntGenericMixin, LoginRequiredMixin, DeleteCheckView):
	template_name = "whoisdb/obj_delete.html"
	model = ASNumber
	slug_field = "handle"
	slug_url_kwarg = "handle"
	success_url = reverse_lazy("whoisdb:dashboard")


class ASAndSubnetWizard(LoginRequiredMixin, SessionWizardView):
	form_list = [ASNumberForm, InetNumForm]
	template_name = "whoisdb/wizard.html"

	def get_form_initial(self, step):
		return {"handle": "AUTO"}

	def done(self, form_list, **kwargs):
		fl = list(form_list)
		asNum = fl[0].save()
		net = fl[1].save()

		messages.info(self.request, "The following objects have been created: AS %s %s, Subnet %s %s" % (asNum.handle, asNum.number, net.handle, net.getNetwork()))

		return HttpResponseRedirect(reverse("whoisdb:dashboard"))

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

		return kwargs

	def get_context_data(self, *args, **kwargs):
		d = super(ASAndSubnetWizard, self).get_context_data(*args, **kwargs)

		step = d["wizard"]["steps"].step1
		if step == 1:
			d["message"] = "Create an AS object"
		elif step == 2:
			d["message"] = "Create a Subnet"

		return d