Fix #104 (#107)

* Catch Volvo API not returning a valid json string #104

* Update changelog

src/CHANGELOG.md

@@ -1,3 +1,8 @@
+## v1.8.8
+### 🐛 Bug Fixes:
+
+- Fix json decode error, if volvo API returns a simple string #104
+
 ## v1.8.7
 ### 🚀 Features:
 

src/const.py

@@ -1,6 +1,6 @@
 from config import settings
 
-VERSION = "v1.8.7"
+VERSION = "v1.8.8"
 
 OAUTH_URL = "https://volvoid.eu.volvocars.com/as/token.oauth2"
 VEHICLES_URL = "https://api.volvocars.com/connected-vehicle/v1/vehicles"

src/mqtt.py

@@ -255,11 +255,12 @@ def update_car_data(force_update=False, overwrite={}):
             else:
                 topic = f"homeassistant/{entity['domain']}/{vin}_{entity['id']}/state"
 
-            mqtt_client.publish(
-                topic,
-                json.dumps(state) if isinstance(state, dict) or isinstance(state, list) else state
-            )
-            update_ha_device(entity, vin, state)
+            if state:
+                mqtt_client.publish(
+                    topic,
+                    json.dumps(state) if isinstance(state, dict) or isinstance(state, list) else state
+                )
+                update_ha_device(entity, vin, state)
 
 
 def update_ha_device(entity, vin, state):

src/volvo.py

@@ -8,6 +8,7 @@ from threading import currentThread
 from datetime import datetime, timedelta
 from config import settings
 from babel.dates import format_datetime
+from json import JSONDecodeError
 from const import charging_system_states, charging_connection_states, door_states, window_states, \
     OAUTH_URL, VEHICLES_URL, VEHICLE_DETAILS_URL, RECHARGE_STATE_URL, CLIMATE_START_URL, \
     WINDOWS_STATE_URL, LOCK_STATE_URL, TYRE_STATE_URL, supported_entities, BATTERY_CHARGE_STATE_URL, \
@@ -347,7 +348,11 @@ def api_call(url, method, vin, sensor_id=None, force_update=False, key_change=Fa
         return None
 
     logging.debug("Response status code: " + str(response.status_code))
-    data = response.json()
+    try:
+        data = response.json()
+    except JSONDecodeError as e:
+        logging.error("Fetched json decode error, Volvo API seems to return garbage. Skipping update. Error: " + str(e))
+        return None
 
     if response.status_code == 200:
         logging.debug(response.text)