from django.shortcuts import render, redirect
from django.contrib.auth.mixins import LoginRequiredMixin
from django.contrib.auth.models import User
from django.views.generic import CreateView, ListView, UpdateView, DetailView, DeleteView, View
from .models import Standards
from django.contrib import messages
from django.http import HttpResponse, JsonResponse
from .forms import StandardAddStandard, StandardAddStandardEditor, StandardUpdateStandard, StandardUpdateStandardEditor
from django.contrib.auth.decorators import login_required
from tasks.models import Tasks
from areas.models import Areas
from datetime import datetime

# ALLE STANDARDS EINER AGENTUR
class StandardsManagement(LoginRequiredMixin, ListView):
	model = Standards
	# Adding active_link
	# Loading only user same agency
	# Change context and return for template-data
	def get_context_data(self, **kwargs):
		context = super().get_context_data(**kwargs)
	#	# Get all Users of the Same Agency as logged user
		areas = Areas.objects.filter(agency__pk=self.request.user.profile.agency.pk)
		standards_of_user = Standards.objects.filter(agency__pk=self.request.user.profile.agency.pk, created_standard_by=self.request.user.pk)
		standards_of_agency = Standards.objects.filter(agency__pk=self.request.user.profile.agency.pk)
		tasks = Tasks.objects.filter(agency__pk=self.request.user.profile.agency.pk)
		context.update({'active_link' : 'standards', 'tasks': tasks, 'standards_of_agency' : standards_of_agency, 'areas' : areas, 'standards_of_user' : standards_of_user})
		return context


@login_required
def StandardAdd(request):
	if request.method == 'POST':
		normalForm = StandardAddStandard(request.POST, instance=request.user)
		editorForm = StandardAddStandardEditor(request.POST, instance=request.user)		
		if editorForm.is_valid() and normalForm.is_valid():
			normalForm.agency = request.user.profile.agency
			normalForm.created_standard_by = request.user
			normalForm.created_standard_date = datetime.now()
			normalForm.published_by = request.user
			normalForm.last_modifed_by = request.user
			normalForm.save()
			editorForm.save()	
			new_standard = Standards()			
			new_standard.agency = request.user.profile.agency
			new_standard.created_standard_by = request.user
			new_standard.published_by = request.user
			new_standard.last_modified_by = request.user
			new_standard.created_standard_date = datetime.now()
			new_standard.last_modified_on = datetime.now()
			new_standard.task = normalForm.cleaned_data['task']
			new_standard.area = normalForm.cleaned_data['area']
			new_standard.name = normalForm.cleaned_data['name']
			new_standard.content = editorForm.cleaned_data['content']	
			new_standard.public = normalForm.cleaned_data['public']
			new_standard.save()
			tempstandardname = normalForm.cleaned_data['name']
			if(new_standard.public and request.user.has_perm('users.standard_management')):
				messages.success(request, f'Standard {tempstandardname} hinzugefügt und veröffentlicht.')			
			else:
				new_standard.public = False
				new_standard.save()
				messages.success(request, f'Standard {tempstandardname} hinzugefügt! Dieser muss noch veröffentlicht werden.')			
			return redirect('standards')	

	else:
		normalForm = StandardAddStandard(instance=request.user)
		editorForm = StandardAddStandardEditor(instance=request.user)
		

	context = {
		'normalForm' : normalForm,
		'editorForm' : editorForm,
		'active_link' : 'standards'
	}
	return render(request, 'standards/standards_add.html', context)


@login_required
def StandardUpdate(request, id):
	standard = Standards.objects.get(pk=id)
	if request.method == 'POST':
		#normalForm = StandardUpdateStandard(request.POST, instance=standard)
		normalForm = StandardUpdateStandard(request.POST, instance=standard)
		editorForm = StandardUpdateStandardEditor(request.POST, instance=standard)
		
		if editorForm.is_valid() and normalForm.is_valid():
			existing_standard = Standards.objects.get(pk=id)	
			existing_standard.last_modified_by = request.user
			existing_standard.last_modified_on = datetime.now()
			existing_standard.task = normalForm.cleaned_data['task']
			existing_standard.area = normalForm.cleaned_data['area']
			existing_standard.name = normalForm.cleaned_data['name']
			existing_standard.content = editorForm.cleaned_data['content']			
			'''

				AKTUALISIERUNG

				Wennn der User selbst den Standard erstellt hat und Rechte zur Standardverwaltung hat,
				dann wird der Status nicht verändert (public bleibt true bzw. false). Hat der User
				aber keine Rechte und ist der Standarf public, wird er auf public=false gesetzt!

			'''
			if request.user.has_perm('users.standard_management'):
				messages.success(request, f'Standard {existing_standard.name} aktualisiert!')			
			else:
				if existing_standard.public:
					existing_standard.public = False	
					messages.warning(request, f'Standard {existing_standard.name} aktualisiert und ist nicht mehr öffentlich, damit Änderungen geprüft werden können.')												
				else:
					messages.success(request, f'Standard {existing_standard.name} aktualisiert!')												
			existing_standard.save()
			return redirect('/standards')		

	else:
		#normalForm = StandardUpdateStandard(instance=standard)
		normalForm = StandardUpdateStandard(instance=standard)
		editorForm = StandardUpdateStandardEditor(instance=standard)
		

	context = {
		'normalForm' : normalForm,
		'editorForm' : editorForm,
		'active_link' : 'standards',
		'standard_id' : standard.pk,
		'standard_status' : standard.public
	}
	return render(request, 'standards/standards_update.html', context)

@login_required
def load_tasks(request):
    areaid = request.GET.get('areaid')
    tasks = Tasks.objects.filter(area__id=areaid).order_by('name')    
    return render(request, 'standards/standards_tasklist.html', {'tasks': tasks})


class StandardDeleteView(LoginRequiredMixin, DeleteView):
	model = Standards
	success_url = '/standards'
	template_name = 'standards/standard_confirm_delete.html'	

	def delete(self, request, *args, **kwargs):		
		standard = Standards.objects.get(pk=kwargs['pk'])
		response = super(StandardDeleteView, self).delete(request, *args, **kwargs)
		names = standard.name
		messages.success(request, f'Standard ' +names+ ' wurde gelöscht!')
		return response

	def get_context_data(self, **kwargs):
		context = super(StandardDeleteView, self).get_context_data(**kwargs)
		context['active_link'] = 'standards'
		return context

@login_required
def StandardChangePublic(request, pk):
	standard = Standards.objects.get(pk=pk)
	if standard.public:
		standard.public = False
		messages.warning(request, f'Standard {standard.name} ist nicht mehr öffentlich!')
	else:
		standard.public = True
		messages.success(request, f'Standard {standard.name} wurde veröffentlicht und ist innerhalb der Agentur sichtbar!')
	standard.save()
	return redirect('standards')

@login_required
def StandardSingle(request, pk):
	standard = Standards.objects.get(pk=pk)
	context = {
		'active_link':'standards',
		'standard' : standard
	}
	return render(request, 'standards/standards_single.html', context)


@login_required
def StandardArea(request, pk):
	standards = Standards.objects.filter(agency__pk=request.user.profile.agency.pk).filter(area__pk=pk)
	area = Areas.objects.get(pk=pk)
	context = {
		'active_link':'standards',
		'standards_of_agency_area' : standards,
		'areaid' : pk,
		'areaname' : area.name
	}
	return render(request, 'standards/standard_area.html', context)

@login_required
def StandardTask(request, pk):
	standards = Standards.objects.filter(agency__pk=request.user.profile.agency.pk).filter(task__pk=pk)
	task = Tasks.objects.get(pk=pk)
	area = Areas.objects.get(pk=task.area.pk)
	context = {
		'active_link':'standards',
		'standards_of_agency_task' : standards,
		'taskid' : pk,
		'taskname' : task.name,
		'areaid' : area.pk,
		'areaname' : area.name
	}
	return render(request, 'standards/standard_task.html', context)