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94 lines
3.1 KiB
94 lines
3.1 KiB
# -*- coding: utf-8 -*-
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#
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from rest_framework import generics
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from rest_framework.serializers import Serializer
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from common.permissions import IsValidUser
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from common.utils import get_logger
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from .. import serializers
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from ..models import Preference
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logger = get_logger(__file__)
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class PreferenceApi(generics.RetrieveUpdateAPIView):
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permission_classes = (IsValidUser,)
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queryset = Preference.objects.all()
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serializer_class_mapper = {
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'lina': serializers.LinaSerializer,
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'luna': serializers.LunaSerializer,
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'koko': serializers.KokoSerializer,
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}
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def check_permissions(self, request):
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if self.category not in self.serializer_class_mapper:
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return self.permission_denied(request, 'category is invalid')
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return super().check_permissions(request)
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@property
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def user(self):
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return self.request.user
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@property
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def category(self):
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return self.request.query_params.get('category')
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def get_serializer_class(self):
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cls = self.serializer_class_mapper.get(self.category)
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return cls
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def get_field_defaults(self, serializer):
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field_defaults = {}
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fields = serializer.get_fields()
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for name, field in fields.items():
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if isinstance(field, Serializer):
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field_defaults[name] = self.get_field_defaults(field)
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continue
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field_defaults[name] = getattr(field, 'default', None)
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return field_defaults
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def get_encrypted_fields(self, serializer):
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encrypted_fields = []
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fields = serializer.get_fields()
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for name, field in fields.items():
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if isinstance(field, Serializer):
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encrypted_fields += self.get_encrypted_fields(field)
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continue
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if not field.write_only:
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continue
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encrypted_fields.append(name)
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return encrypted_fields
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def get_object(self):
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serializer = self.get_serializer_class()()
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field_defaults = self.get_field_defaults(serializer)
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qs = self.queryset.filter(user=self.user, category=self.category)
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if not qs.exists():
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return field_defaults
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data = dict(qs.values_list('name', 'value'))
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for k, v in data.items():
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for d in field_defaults.values():
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if k in d:
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d[k] = v
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break
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return field_defaults
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def perform_update(self, serializer):
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user = self.user
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category = self.category
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model = self.queryset.model
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encrypted_fields = self.get_encrypted_fields(serializer)
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data = serializer.validated_data
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for d in data.values():
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for name, value in d.items():
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kwargs = {'name': name, 'user': user}
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defaults = {'category': category}
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if name in encrypted_fields:
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value = model.encrypt(value)
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defaults['encrypted'] = True
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defaults['value'] = value
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defaults.update(kwargs)
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model.objects.update_or_create(defaults, **kwargs)
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