from django.shortcuts import render
from django.contrib.auth import logout
from django.views.generic.list import ListView
from django.views.generic.detail import DetailView
from rest_framework.authentication import TokenAuthentication
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework.permissions import IsAuthenticated
from rest_framework import status, permissions
from django.contrib.auth.models import User
from django.contrib import messages
from django.contrib.auth.mixins import LoginRequiredMixin, UserPassesTestMixin
from .models import sistemas_por_cliente, DeviceHistory,Device
from .serializers import DeviceSerializer
from .permissions import HasAuthorizationHeader
from django.utils import timezone
import re

from rest_framework.authtoken.models import Token
from django.utils import timezone
from datetime import timedelta

from django.contrib.sessions.models import Session

def get_logged_in_users():
    sessions = Session.objects.filter(expire_date__gte=timezone.now())

    # Get all non-expired tokens
    #tokens = Token.objects.filter(created__gte=timezone.now() - timedelta(hours=1))    
    tokens = Token.objects.all()
    
    # Get a list of logged-in user ids
    uid_list = [token.user_id for token in tokens]

    # Get the logged-in users
    users = User.objects.filter(id__in=uid_list)
    for user,session in zip(users,sessions):        
        user.session_data = session.get_decoded()
        user.session_expire = session.expire_date
    return users

class UsersConnectedList(UserPassesTestMixin,LoginRequiredMixin,ListView):
    model = User
    template_name= 'Sistemas/Usuarios/lista.html'

    def get_queryset(self):
        return get_logged_in_users()

    def test_func(self):        
        res = self.request.user.groups.filter(name= 'admin_soft')
        if not res:
            messages.error(self.request, f'Lo sentimos. La página que buscas no está disponible, no cuentas con los permisos.')
        return res

class SistemasXCliente_ListView(UserPassesTestMixin,LoginRequiredMixin, ListView):
    model = sistemas_por_cliente
    paginate_by = 5
    template_name = 'Sistemas/Xclientes/lista.html'
    def test_func(self):
        res = self.request.user.groups.filter(name= 'admin_soft')
        if not res:
            messages.error(self.request, f'Lo sentimos. La página que buscas no está disponible, no cuentas con los permisos.')
        return res

class SistemasXCliente_DetailView(UserPassesTestMixin,LoginRequiredMixin, DetailView):
    model = sistemas_por_cliente
    template_name= 'Sistemas/Xclientes/detail.html'
    def test_func(self):        
        res = self.request.user.groups.filter(name= 'admin_soft')
        if not res:
            messages.error(self.request, f'Lo sentimos. La página que buscas no está disponible, no cuentas con los permisos.')
        return res




'''
========================= API Views
'''

class RegisterDeviceView(APIView):
    permissions_classes = (permissions.AllowAny,)

    def post(self,request):
        try:
            serializer = DeviceSerializer(data=request.data,context={'request':request})
            if serializer.is_valid():
                serializer.save()
                return Response(serializer.data, status=status.HTTP_200_OK)
            else:                
                return Response({'Error':f'{serializer.errors}','isError':True}, status=status.HTTP_200_OK) 
        except Exception as e:
            return Response(
                    {'Error':f'{e}','isError':True}
                    , status=status.HTTP_200_OK)



class AuthenticateDeviceView(APIView):
    authentication_classes= [TokenAuthentication]
    permissions_classes=[IsAuthenticated, HasAuthorizationHeader]

    def get(self, request):
        try:
            obj, created = DeviceHistory.objects.get_or_create(
                device=request.user.device,
                ip_address=request.META.get('REMOTE_ADDR'),
            )
            obj.last_authentication=timezone.now()
            obj.save()
            device_data=DeviceSerializer(request.user.device).data
            if device_data.serializer.is_valid:
                return Response(device_data.serializer.data, status=status.HTTP_200_OK)
            else:
                return Response(
                    {'Error':f'{device_data.serializer.errors}','isError':True}
                    , status=status.HTTP_200_OK)
        except Exception as e:
            return Response(
                    {'Error':f'{e}','isError':True}
                    , status=status.HTTP_200_OK)


class LogoutView(APIView):
    authentication_classes = (TokenAuthentication,)
    permission_classes = (IsAuthenticated,HasAuthorizationHeader,)

    def post(self, request):
        logout(request)
        return Response({'OK':'Dispositivo desautenticado'},status=200)