from django.shortcuts import render, redirect, reverse
from django.contrib.auth.mixins import LoginRequiredMixin
from django.views.generic import CreateView, ListView, UpdateView, DetailView, DeleteView
from django.contrib.auth.models import User
from django.contrib.auth.decorators import login_required
from .forms import MessageForm
from notificsys.models import UserNotification
from django.core.mail import send_mail
from django.template.loader import render_to_string
from .models import Message
from django.contrib import messages
from django.http import JsonResponse
from notificsys.models import UserNotification
from django.urls import reverse_lazy
import channels.layers
from asgiref.sync import async_to_sync


# ALLE STANDARDS EINER AGENTUR
@login_required
def mainmessageview(request):	
	if request.method == 'POST':
		context = {		
			'active_link' : 'messages'
		}
		
		formtocheck = MessageForm(request.user, request.POST)

		if formtocheck.is_valid():

			targetuser_ids = formtocheck.cleaned_data["target_user"]
			for user in targetuser_ids:
				targetuser = User.objects.get(pk=user)
				messagecontent = formtocheck.cleaned_data["message_content"]
				message = Message.objects.create(target_user=targetuser, agency=request.user.profile.agency, content=messagecontent, created_by=request.user)			
				
				targeturl = request.build_absolute_uri() + "sl/" + str(message.id)
				notificationtext = "Sie haben eine neue Mitteilung erhalten: " + message.content

				if(targetuser.usernotifications.message_received_mail):		
					username = targetuser.first_name + " " + targetuser.last_name
					msg_html = render_to_string('notificsys/notification_mail.html', {'username': username, 'notificationtext' : notificationtext, 'linktarget' : targeturl})		
					send_mail(
					    'Agentur-Benachrichtigung',
					    'Hallo ' + targetuser.first_name + ' ' + targetuser.last_name + '! ' + notificationtext + " <a href='"+targeturl+"'>Klicken Sie hier.</a>",
					    'noreply@digitale-agentur.com',
					    [targetuser.email],		    
					    html_message=msg_html,
					    fail_silently=True
					)

				if(targetuser.usernotifications.message_received_push):
					newnotification = UserNotification(touser=targetuser, elementid=message.id, notificationtext='Hallo ' + targetuser.first_name + ' ' + targetuser.last_name + '! ' + notificationtext, notificationtype="messagereceived")
					newnotification.save()

					channel_layer = channels.layers.get_channel_layer()
					async_to_sync(channel_layer.group_send)("user_" + str(targetuser.pk), {'type' : 'pushhandler', 'pushtext' : "pushnotification__Mitteilung | Neue Mitteilung erhalten: " + message.content})
				

		else:
			messages.warning(request, f'Bitte valide Daten eingeben!')			
			context = {		
				'active_link' : 'messages',
				'form' : MessageForm(request.user),
				'usermessages' : Message.objects.filter(target_user=request.user, agency=request.user.profile.agency).order_by('-created_date')
			}
			return render (request, 'message/message.html', context)
		
		context = {		
			'active_link' : 'messages',
			'form' : MessageForm(request.user),
			'usermessages' : Message.objects.filter(target_user=request.user, agency=request.user.profile.agency).order_by('-created_date')
		}

		messages.success(request, f'Ihre Nachricht wurde verschickt!')			
		return render (request, 'message/message.html', context)
	else:
		context = {		
			'active_link' : 'messages',
			'form' : MessageForm(request.user),
			'usermessages' : Message.objects.filter(target_user=request.user, agency=request.user.profile.agency).order_by('-created_date')
		}
	# Adding active_link
	# Loading only user same agency
	# Change context and return for template-data
	#	# Get all Users of the Same Agency as logged user
	
	return render (request, 'message/message.html', context)

@login_required
def singelmessageview(request, pk):


	#Notification delete
	unknownnotification = UserNotification.objects.filter(touser__pk=request.user.pk, elementid=pk).delete()

	context = {		
			'active_link' : 'messages',
			'mess' : Message.objects.get(pk=pk)
		}

	return render (request, 'message/message_single.html', context)

@login_required
def delsinglemessage(request):
	if request.method == 'GET':
		if request.GET['action'] == 'delsingle':
			Message.objects.get(pk=request.GET['todelid']).delete()
			UserNotification.objects.filter(elementid=request.GET['todelid']).delete()
	return JsonResponse({})	


@login_required
def delsinglemessagefromsingle(request, pk):
	
	todelmess = Message.objects.get(pk=pk)

	if(todelmess.agency == request.user.profile.agency and todelmess.target_user == request.user):
		messages.success(request, f'Mitteilung gelöscht.')		
		Message.objects.get(pk=pk).delete()
		UserNotification.objects.filter(elementid=pk).delete()
	else:
		messages.success(request, f'Sie dürfen diese Mitteilung nicht löschen.')		


	# Load Context!
	context = {		
		'active_link' : 'messages',
		'form' : MessageForm(request.user),
		'usermessages' : Message.objects.filter(target_user=request.user, agency=request.user.profile.agency).order_by('-created_date')
	}
	
	return redirect ("messages")