from rest_framework import authentication, permissions
from rest_framework.response import Response
from rest_framework.views import APIView

from ishtar_common.models import ApiSearchModel
from ishtar_common.views_item import get_item


class IpModelPermission(permissions.BasePermission):
    def has_permission(self, request, view):
        if not request.user or not getattr(request.user, "apiuser", None):
            return False
        ip_addr = request.META['REMOTE_ADDR']
        q = view.search_model_query(request).filter(user__ip=ip_addr)
        return bool(q.count())


class SearchAPIView(APIView):
    model = None
    authentication_classes = (authentication.TokenAuthentication,)
    permission_classes = (permissions.IsAuthenticated, IpModelPermission)

    def __init__(self, **kwargs):
        assert self.model is not None
        super(SearchAPIView, self).__init__(**kwargs)

    def search_model_query(self, request):
        return ApiSearchModel.objects.filter(
            user=request.user.apiuser,
            content_type__app_label=self.model._meta.app_label,
            content_type__model=self.model._meta.model_name)

    def get(self, request, format=None):
        _get_item = get_item(
            self.model, "get_" + self.model.SLUG, self.model.SLUG,
            # TODO: own_table_cols=get_table_cols_for_ope() - adapt columns
        )
        search_model = self.search_model_query(request).all()[0]
        if search_model.limit_query:
            # TODO
            # request.GET[] += " " + search_model.limit_query
            pass
        response = _get_item(request)
        return response
        #return Response({})