# -*- coding: utf-8 -*-

from django.contrib.contenttypes.models import ContentType

from rest_framework.permissions import IsAuthenticated

from greenmine.base import filters
from greenmine.base.api import ModelCrudViewSet, ModelListViewSet
from greenmine.base.notifications.api import NotificationSenderMixin
from greenmine.projects.permissions import AttachmentPermission
from greenmine.projects.serializers import AttachmentSerializer
from greenmine.projects.models import Attachment

from . import models
from . import permissions
from . import serializers


class WikiAttachmentViewSet(ModelCrudViewSet):
    model = Attachment
    serializer_class = AttachmentSerializer
    permission_classes = (IsAuthenticated, AttachmentPermission)
    filter_backends = (filters.IsProjectMemberFilterBackend,)
    filter_fields = ["project", "object_id"]

    def get_queryset(self):
        ct = ContentType.objects.get_for_model(models.Wiki)
        qs = super(WikiAttachmentViewSet, self).get_queryset()
        qs = qs.filter(content_type=ct)
        return qs.distinct()

    def pre_save(self, obj):
        super(WikiAttachmentViewSet, self).pre_save(obj)
        if not obj.id:
            obj.content_type = ContentType.objects.get_for_model(models.Wiki)
            obj.owner = self.request.user


class WikiViewSet(ModelCrudViewSet):
    model = models.WikiPage
    serializer_class = serializers.WikiPageSerializer
    permission_classes = (IsAuthenticated,)
    filter_backends = (filters.IsProjectMemberFilterBackend,)
    filter_fields = ["project", "slug"]

    def pre_save(self, obj):
        if not obj.owner:
            obj.owner = self.request.user