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