Introduce a CS instance hashId dependent on its specifications and use it in

[e-mobility-charging-stations-simulator.git] / src / charging-station / ocpp / OCPPIncomingRequestService.ts

import type ChargingStation from '../ChargingStation';
import { HandleErrorParams } from '../../types/Error';
import { IncomingRequestCommand } from '../../types/ocpp/Requests';
import { JsonType } from '../../types/JsonType';
import logger from '../../utils/Logger';

export default abstract class OCPPIncomingRequestService {
  private static readonly instances: Map<string, OCPPIncomingRequestService> = new Map<
    string,
    OCPPIncomingRequestService
  >();

  protected chargingStation: ChargingStation;

  protected constructor(chargingStation: ChargingStation) {
    this.chargingStation = chargingStation;
  }

  public static getInstance<T extends OCPPIncomingRequestService>(
    this: new (chargingStation: ChargingStation) => T,
    chargingStation: ChargingStation
  ): T {
    if (!OCPPIncomingRequestService.instances.has(chargingStation.hashId)) {
      OCPPIncomingRequestService.instances.set(chargingStation.hashId, new this(chargingStation));
    }
    return OCPPIncomingRequestService.instances.get(chargingStation.hashId) as T;
  }

  protected handleIncomingRequestError<T>(
    commandName: IncomingRequestCommand,
    error: Error,
    params: HandleErrorParams<T> = { throwError: true }
  ): T {
    logger.error(
      this.chargingStation.logPrefix() + ' Incoming request command %s error: %j',
      commandName,
      error
    );
    if (!params?.throwError && params?.errorResponse) {
      return params?.errorResponse;
    }
    if (params?.throwError && !params?.errorResponse) {
      throw error;
    }
    if (params?.throwError && params?.errorResponse) {
      return params?.errorResponse;
    }
  }

  public abstract handleRequest(
    messageId: string,
    commandName: IncomingRequestCommand,
    commandPayload: JsonType
  ): Promise<void>;
}