from django.db.models import Q
from rest_framework.viewsets import ModelViewSet
from rest_framework import permissions

from projects.models import Project, Realty, Stage
from projects.serializers import ProjectSerializer, RealtySerializer, StageSerializer
from projects.filters import ProjectFilterSet, RealtyFilterSet, StageFilterSet

from specializations.models import Specialization
from specializations.serializers import SpecializationSerializer
from specializations.filters import SpecializationFilterSet

from users.models import User
from users.serializers import UserSerializer
from users.filters import UserFilterSet

from common.models import Location
from common.serializers import LocationSerializer
from common.filters import LocationFilterSet

from chat.models import Message, Notes
from chat.serializers import MessageSerializer, NoteSerializer
from chat.filters import MessageFilterSet, NoteFilterSet


class StageViewSet(ModelViewSet):
    queryset = Stage.objects.all()
    serializer_class = StageSerializer
    filter_class = StageFilterSet
    permission_classes = (permissions.IsAuthenticatedOrReadOnly,)


class ProjectViewSet(ModelViewSet):
    queryset = Project.objects.all()
    serializer_class = ProjectSerializer
    filter_class = ProjectFilterSet


class NoteViewSet(ModelViewSet):
    queryset = Notes.objects.all()
    serializer_class = NoteSerializer
    filter_class = NoteFilterSet
    permission_classes = (permissions.IsAuthenticatedOrReadOnly,)

class MessageViewSet(ModelViewSet):
    queryset = Message.objects.all()
    serializer_class = MessageSerializer
    filter_class = MessageFilterSet

    def get_queryset(self):
        queryset = Message.objects.all()
        search_param = self.request.query_params.get('operand', None)
        recipent_id = self.request.query_params.get('recipent_id', None)
        sender_id = self.request.query_params.get('sender_id', None)
        if search_param:
            # import code; code.interact(local=dict(globals(), **locals()))
            if search_param == 'in':
                queryset = queryset.filter(Q(sender__in=[sender_id,recipent_id]),Q(recipent__in=[sender_id,recipent_id])).order_by('created')
        return queryset


class RealtyViewSet(ModelViewSet):
    queryset = Realty.objects.all()
    serializer_class = RealtySerializer
    filter_class = RealtyFilterSet


class SpecializationViewSet(ModelViewSet):
    try:  # TODO: dirty
        queryset = Specialization.objects.root_nodes()[0].get_descendants()
    except:
        queryset = Specialization.objects
    serializer_class = SpecializationSerializer
    filter_class = SpecializationFilterSet


class UserViewSet(ModelViewSet):
    queryset = User.objects.all()
    serializer_class = UserSerializer
    filter_class = UserFilterSet


class LocationViewSet(ModelViewSet):
    try:  # TODO: dirty
        queryset = Location.objects.root_nodes()[0].get_descendants()
    except:
        queryset = Location.objects
    serializer_class = LocationSerializer
    filter_class = LocationFilterSet