from rest_framework import serializers
import ast
from .models import Device


class SearchEquipSerializer(serializers.Serializer):
    device_id = serializers.CharField(help_text="搜索设备号", required=True)
    isfullId = serializers.IntegerField(help_text="是否完整搜索固定值1", required=False)

    def validate_device_id(self, value):
        value = value.strip()
        if len(value) < 4:
            raise serializers.ValidationError("设备号长度不能小于4位")
        else:
            return value


class DeviceListSerializer(serializers.ModelSerializer):
    class Meta:
        model = Device
        exclude = ('owner', 'device_type')


class DeviceDetailSerializer(serializers.Serializer):
    def to_representation(self, instance):
        value = ast.literal_eval(instance.device_data)
        addtime = instance.add_time
        data = {"value": value, "time": addtime}
        return data