pigallery2/backend/routes/ErrorRouter.ts

import {RenderingMWs} from "../middlewares/RenderingMWs";
import {Error, ErrorCodes} from "../../common/entities/Error";
import {Logger} from "../Logger";
import Request = Express.Request;
import Response = Express.Response;

export class ErrorRouter {
  public static route(app: any) {

    this.addApiErrorHandler(app);
    this.addGenericHandler(app);
  }

  private static addApiErrorHandler(app) {
    app.use("/api/*",
      RenderingMWs.renderError
    );
  };

  private static addGenericHandler(app) {
    app.use((err: any, req: Request, res: Response, next: Function) => {
        //Flush out the stack to the console
        Logger.error("Unexpected error:", err);
        next(new Error(ErrorCodes.SERVER_ERROR, "Unknown server side error", err));
      },
      RenderingMWs.renderError
    );
  }

}