Various improvements

utils/equipment.js

@@ -3,21 +3,31 @@ console.log('Load equipment modules');
 
 class Equipment {
     constructor(equipmentItem) {
-        console.info('Initialization of eqipment ' + equipmentItem.name + ' with type ' + this.constructor.name);
+        console.info(`Initialization of eqipment ${equipmentItem.name} with type ${this.constructor.name}`);
 
         // Set equipmentItem
         this.equipmentItem = equipmentItem;
 
-        // Set stateItem, toDo: error when no stateItem existing
-        this.stateItem = items[this.equipmentItem.name + '_State'];
-
         // Initialization of properties
         this.name = this.equipmentItem.name;
         this.watch = new Object();
+
+        // Set stateItem, toDo: error when no stateItem existing
+        this.stateItem = items[this.getPropertyItemName('State')];
+
+        // Check if equipment has LowBat item
+        if (this.hasProperty('LowBat')) {
+            this.watch['lowBat'] = new watch.Watch(this.getPropertyItemName('LowBat'));
+            this.watch['lowBat'].add({
+                targetState: 'ON', 
+                alertFunc: () => { this.#notifyLowBat(); },
+                alertRepeat: 'PT23H'
+            });
+        }
     }
 
-    getValue(valueName, defaultValue = '') {
+    getValue(propertyName, defaultValue = '') {
-        let valueItemName = this.name + '_' + valueName;
+        let valueItemName = this.name + '_' + propertyName;
         let returnValue = defaultValue;
   
         if (items[valueItemName] == null) {                             // Return default value if item is missing
@@ -34,10 +44,28 @@ class Equipment {
             }
         }       
 
-        console.debug('Return value ' +  valueName + ' for ' + this.name + ': ' + returnValue);
+        console.debug(`Return value ${valueName} for ${this.name}: ${returnValue}`);
         return returnValue;
     }
 
+    getPropertyItemName(propertyName) {
+        if (this.hasProperty(propertyName)) {
+            return items[this.name + '_' + propertyName].name;            
+        }
+    }
+
+    hasProperty(propertyName) {
+        if (items[this.name + '_' + propertyName] == null) {
+            console.debug(`Eqipment ${this.name} has no property ${propertyName}`)
+            return false;
+        }
+        return true;
+    }
+
+    #notifyLowBat() {
+        console.warn(`${this.name} has a low battery level.`);
+    }
+
     gc() {
         console.log('Denitialization of eqipment ' + this.name);
 
@@ -59,7 +87,7 @@ class IrrigationValve extends Equipment {
         super(equipmentItem);
 
         this.watch['state'] = new watch.Watch(this.stateItem.name);
-        this.autoOff = this.watch['state'].add({
+        this.watch['state'].add({
             targetState: 'ON', 
             alertFunc: () => { this.stateItem.sendCommand('OFF'); },
             alertDelay: 'PT59M'
@@ -92,6 +120,4 @@ module.exports = {
     IrrigationValve,
     TowelRadiator,
     WeatherService
-};
+};
-
-