X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fcharging-station%2Focpp%2FOCPPResponseService.ts;h=ffcb888fe422bf35bb24549205ff4dfbc3ba09f5;hb=ada189a839743451d477d5b3bddc698f2634d799;hp=17bf80650c1e04e615e7b7ddc017f31d43822dc8;hpb=d18886407cdb8b8148c87492f2c953075e708401;p=e-mobility-charging-stations-simulator.git

diff --git a/src/charging-station/ocpp/OCPPResponseService.ts b/src/charging-station/ocpp/OCPPResponseService.ts
index 17bf8065..ffcb888f 100644
--- a/src/charging-station/ocpp/OCPPResponseService.ts
+++ b/src/charging-station/ocpp/OCPPResponseService.ts
@@ -1,13 +1,25 @@
-import ChargingStation from '../ChargingStation';
 import { JsonType } from '../../types/JsonType';
 import { RequestCommand } from '../../types/ocpp/Requests';
+import type ChargingStation from '../ChargingStation';
 
 export default abstract class OCPPResponseService {
-  protected chargingStation: ChargingStation;
+  private static instance: OCPPResponseService | null = null;
 
-  constructor(chargingStation: ChargingStation) {
-    this.chargingStation = chargingStation;
+  protected constructor() {
+    // This is intentional
   }
 
-  public abstract handleResponse(commandName: RequestCommand, payload: JsonType | string, requestPayload: JsonType): Promise<void>;
+  public static getInstance<T extends OCPPResponseService>(this: new () => T): T {
+    if (!OCPPResponseService.instance) {
+      OCPPResponseService.instance = new this();
+    }
+    return OCPPResponseService.instance as T;
+  }
+
+  public abstract responseHandler(
+    chargingStation: ChargingStation,
+    commandName: RequestCommand,
+    payload: JsonType,
+    requestPayload: JsonType
+  ): Promise<void>;
 }