152 lines
4.5 KiB
Python
152 lines
4.5 KiB
Python
import pytz
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from enum import Enum
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from typing import Optional
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from django.utils.timezone import datetime
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from rest_framework import serializers
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from counter.models import DeviceCount, DeviceInfo
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from mosquito.models import DeviceInfo as MosquitoDeviceInfo
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class LedHealthStatus(Enum):
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Good = '良好'
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General = '一般'
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Bad = '较差'
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Unknown = '未知'
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def __repr__(self):
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return self.value
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def __str__(self):
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return self.value
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class LedStatusMobileSerializer(serializers.ModelSerializer):
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device_name = serializers.SerializerMethodField()
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working_hours = serializers.SerializerMethodField()
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energy = serializers.SerializerMethodField()
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class Meta:
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model = DeviceInfo
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fields = [
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'device_id',
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'device_name',
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'working_hours',
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'energy',
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]
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.cur_device = None
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def get_device_name(self, obj) -> Optional[str]:
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device = MosquitoDeviceInfo.objects.filter(device_id=obj.device_id).first()
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if device:
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self.cur_device = device
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return device.device_name
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return None
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def get_working_hours(self, obj):
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if self.cur_device:
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diff = datetime.now(tz=pytz.timezone('UTC')) - self.cur_device.launch_time
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hours = diff.days * 24 + int(diff.seconds / 3600)
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return hours
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return None
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def get_energy(self, obj):
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working_hours = self.get_working_hours(obj)
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if working_hours:
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used = working_hours / self.cur_device.led_lifetime
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return int((1 - used) * 100)
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return None
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class DeviceInfoMobileSerializer(serializers.ModelSerializer):
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device_name = serializers.SerializerMethodField()
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status = serializers.SerializerMethodField()
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csq = serializers.SerializerMethodField()
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count = serializers.SerializerMethodField()
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vol = serializers.SerializerMethodField()
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coordinate = serializers.SerializerMethodField()
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location = serializers.SerializerMethodField()
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led_status = serializers.SerializerMethodField()
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led_health = serializers.SerializerMethodField()
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class Meta:
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model = DeviceInfo
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fields = [
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'device_id',
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'device_name',
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'status',
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'count',
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'csq',
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'vol',
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'led_status',
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'led_health',
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'coordinate',
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'location',
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]
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.latest = None
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self.mosq_device = None
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self.counter_device = None
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def get_device_name(self, obj) -> Optional[str]:
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qs = MosquitoDeviceInfo.objects.filter(device_id=obj.device_id)
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if qs.count() > 0:
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device = qs.first()
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self.mosq_device = device
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return device.device_name
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return None
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def get_status(self, obj) -> int:
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return obj.online
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def get_coordinate(self, obj):
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if self.mosq_device:
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lon, lat = [self.mosq_device.longitude, self.mosq_device.latitude]
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if lon and lat:
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return [lon, lat]
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return None
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def get_location(self, obj):
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if self.mosq_device:
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return self.mosq_device.location
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return None
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def get_count(self, obj):
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device = DeviceCount.objects.filter(
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device_id=self.mosq_device.device_id).order_by('-data_time').first()
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if device:
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self.counter_device = device
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return device.count
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return None
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def get_csq(self, obj):
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if self.counter_device:
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return self.counter_device.csq
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return None
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def get_vol(self, obj):
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if self.counter_device:
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return self.counter_device.vol
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return None
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def get_led_status(self, obj):
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if self.mosq_device:
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return self.mosq_device.led_status
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return None
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def get_led_health(self, obj):
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if self.mosq_device:
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diff = datetime.now(tz=pytz.timezone('UTC')) - self.mosq_device.launch_time
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hours = diff.days * 24 + int(diff.seconds / 3600)
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rate = hours / self.mosq_device.led_lifetime
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if rate <= 0.3:
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return LedHealthStatus.Good.value
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if 0.3 < rate <= 0.6:
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return LedHealthStatus.General.value
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return LedHealthStatus.Bad.value
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return LedHealthStatus.Unknown.value
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