from django.shortcuts import render, get_object_or_404
from django.http import HttpResponseRedirect
from django.urls import reverse
from django.views.generic import FormView
from django.contrib.auth.mixins import LoginRequiredMixin
from django.contrib.auth.decorators import login_required
from django.db.models import Q

from django.utils import timezone

from .models import Request, RequestMessage
from .forms import RequestForm, ResponseForm, ProviderResponseForm

@login_required
def listRequests(request):
	mnts = request.user.maintainer_set.all()
	requestedFromMe = Request.objects.filter(applicant__in=mnts)
	requestedToMe = Request.objects.filter(provider__in=mnts)
	requests = (requestedFromMe | requestedToMe).order_by("-lastAction")

	return render(request, "rrequests/list.html", {"mnts": mnts, "requests": requests, "requestedFromMe": requestedFromMe, "requestedToMe": requestedToMe})


class RrequestCreate(LoginRequiredMixin, FormView):
	template_name = "rrequests/request_create.html"
	form_class = RequestForm

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

		return kwargs

	def form_valid(self, form):
		formData = form.cleaned_data
		print(formData)
		request = Request(
			subject=formData['subject'],
			status=Request.STATE_OPEN,
			applicant=formData['applicant'],
			provider=formData['provider'],
		)
		request.save()

		requestMsg = RequestMessage(
			request=request,

			creator=formData['applicant'],
			message=formData['message'],
		)
		requestMsg.save()

		return HttpResponseRedirect(request.get_absolute_url())

@login_required
def rrequestDetail(request, pk):
	mnts = request.user.maintainer_set.all()
	reqObj = get_object_or_404(Request.objects.filter(Q(provider__in=mnts) | Q(applicant__in=mnts)), pk=pk)

	mnts = request.user.maintainer_set.all()
	formClass = None
	provider = None
	initialFormData = {}
	if reqObj.provider in mnts:
		provider = True
		formClass = ProviderResponseForm
		initialFormData["createdResources"] = reqObj.grantedResources
	else:
		provider = False
		formClass = ResponseForm

	if request.method == "POST":
		form = formClass(request=reqObj, user=request.user, data=request.POST)
		if form.is_valid():
			# create message object
			msg = RequestMessage(
				request=reqObj,
				creator=reqObj.provider if provider else reqObj.applicant,
				message=form.cleaned_data['message']
			)
			if form.cleaned_data['new_status'] != "KEEP":
				msg.statusChanged = form.cleaned_data['new_status']
				reqObj.status = msg.statusChanged

			msg.save()

			if "createdResources" in form.cleaned_data and \
			   form.cleaned_data['createdResources'].strip() != "":
				reqObj.grantedResources = form.cleaned_data["createdResources"].strip()

			reqObj.lastAction = timezone.now()
			reqObj.save()


			return HttpResponseRedirect(reverse("rrequests:show", args=(pk,)))
	else:
		form = formClass(request=reqObj, user=request.user, initial=initialFormData)

	return render(request, "rrequests/request_detail.html", {"request": reqObj, "form": form})