Add service warning sensor to Volvo integration (home-assistant#154613)

Author: thomasddn

homeassistant/components/volvo/icons.json

@@ -348,6 +348,12 @@
       "odometer": {
         "default": "mdi:counter"
       },
+      "service_warning": {
+        "default": "mdi:wrench-clock",
+        "state": {
+          "no_warning": "mdi:car-wrench"
+        }
+      },
       "target_battery_charge_level": {
         "default": "mdi:battery-medium"
       },

homeassistant/components/volvo/sensor.py

@@ -332,6 +332,25 @@ def _direction_value(field: VolvoCarsApiBaseModel) -> str | None:
         state_class=SensorStateClass.TOTAL_INCREASING,
         suggested_display_precision=1,
     ),
+    # diagnostics endpoint
+    VolvoSensorDescription(
+        key="service_warning",
+        api_field="serviceWarning",
+        device_class=SensorDeviceClass.ENUM,
+        options=[
+            "distance_driven_almost_time_for_service",
+            "distance_driven_overdue_for_service",
+            "distance_driven_time_for_service",
+            "engine_hours_almost_time_for_service",
+            "engine_hours_overdue_for_service",
+            "engine_hours_time_for_service",
+            "no_warning",
+            "regular_maintenance_almost_time_for_service",
+            "regular_maintenance_overdue_for_service",
+            "regular_maintenance_time_for_service",
+            "unknown_warning",
+        ],
+    ),
     # energy state endpoint
     VolvoSensorDescription(
         key="target_battery_charge_level",

homeassistant/components/volvo/strings.json

@@ -309,6 +309,22 @@
       "odometer": {
         "name": "Odometer"
       },
+      "service_warning": {
+        "name": "Service",
+        "state": {
+          "distance_driven_almost_time_for_service": "Almost time for distance service",
+          "distance_driven_overdue_for_service": "Distance service overdue",
+          "distance_driven_time_for_service": "Time for distance service",
+          "engine_hours_almost_time_for_service": "Almost time for engine service",
+          "engine_hours_overdue_for_service": "Engine service overdue",
+          "engine_hours_time_for_service": "Time for engine service",
+          "no_warning": "No warning",
+          "regular_maintenance_almost_time_for_service": "Almost time for service",
+          "regular_maintenance_overdue_for_service": "Service overdue",
+          "regular_maintenance_time_for_service": "Time for service",
+          "unknown_warning": "Unknown warning"
+        }
+      },
       "target_battery_charge_level": {
         "name": "Target battery charge level"
       },