Update sensor config from api; CO2 Sensor; Refactor & Tidy-Up

RaspberryPi_Receiver/Pi_Receiver.py

@@ -93,7 +93,7 @@ class SensorResponse(object):
 class GatewayMetadata(object):
     def __init__(self):
         self.gatewayUID = getserial()
-        self.apiKey = secrets.API_KEY
+        self.apiKey = secrets.GATEWAY_API_KEY
 
 class SensorMetadata(object):
     def __init__(self, uid, messageID, samplePeriod):
@@ -123,6 +123,16 @@ class Co2(object):
     def __init__(self, tmp):
         self.tmp = "Coming Soon!"
 
+class API():
+    def getSensorConfig(self, sensorUID):
+        headers = {'Content-Type': 'Application/json'}
+        response = requests.post(API_URL + '/' + secrets.API_KEY + '/sensor/getConfig/' + sensorUID, headers=headers)
+
+        if (response.status_code != 200):
+            return None
+
+        return json.loads(response.content)
+
 class Reply():
     ackStatus = False
 
@@ -130,8 +140,8 @@ class Reply():
         self.gatewayUid = getserial()
         self.uid = remoteSensorID
         self.replyMsgID = replyMsgID
-        self.txAfterNReadings = None # We may update config of the sensor
-        self.pollingFrequency = None # We may update config of the sensor
+        self.txAfterNReadings = None
+        self.pollingFrequency = None
 
     def setAckStatus(self, ackStatus):
         self.ackStatus = ackStatus
@@ -270,10 +280,11 @@ def ackMsg(sensorResponse):
     data = Reply(sensorResponse.sensorMetadata.uid, sensorResponse.sensorMetadata.messageID)
     data.setAckStatus(True)
 
-    # TODO Fetch config for this sensor from the API here
-    # TODO Include Reply config updates here
-    data.updateConfigPollingFrequency(10000)
-    data.updateConfigTxAfterNReadings(6)
+    # Retrieve up-to-date sensor config from API & Transmit back to sensor
+    updated_sensor_config = API().getSensorConfig(sensorResponse.sensorMetadata.uid)
+    if updated_sensor_config is not None:
+        data.updateConfigPollingFrequency(updated_sensor_config['txAfterNReadings'])
+        data.updateConfigTxAfterNReadings(updated_sensor_config['pollingFrequency'])
 
     if DEBUG > 1:
         print(data.ToJson())