added estimated energy consumption

.editorconfig

@@ -0,0 +1,9 @@
+# Editor configuration, see https://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+indent_style = space
+tab_width = 4
+insert_final_newline = true
+trim_trailing_whitespace = true

luxtronik.js

@@ -463,6 +463,7 @@ Luxtronik.prototype._processData = function () {
         }
     }
     values.opStateHeatingString = heatingStateString;
+    values.estimatedEnergyConsumption = this._calculateElectricEnergyConsumption(values);
 
     return this.receivy.callback(null, {
         values,
@@ -471,6 +472,31 @@ Luxtronik.prototype._processData = function () {
     });
 };
 
+Luxtronik.prototype._calculateElectricEnergyConsumption = function(values) {
+    const heatPumpRunning =
+        values.heatpump_state3 == 0 || // heizbetrieb
+        values.heatpump_state3 == 8 || // pumpenvorlauf
+        values.heatpump_state3 == 17 ||  // elek. zusatzheizung
+        values.heatpump_state3 == 18;  // elek. zusatzheizung
+    const hotWaterProductionRunning =
+        values.heatpump_state3 == 5 || // brauchwasser
+        values.heatpump_state3 == 9 || // thermische desinfektion
+        values.heatpump_state3 == 19;  // warmwasser nachheizung
+
+    if (heatPumpRunning || hotWaterProductionRunning) {
+        // this factor is estimated by observation
+        const factor = hotWaterProductionRunning
+            ? 44
+            : 37;
+
+        const estimatedHeatPumpEnergyUsage = (values.temperature_hot_gas ?? 0) * factor;
+
+        return estimatedHeatPumpEnergyUsage;
+    }
+
+    return undefined;
+};
+
 function sendData(client, data) {
     if (typeof client !== 'undefined' && client !== null) {
         data.forEach(function (element) {