MyDIAPp/src/api/HealthCheckApi.ts

import type {HealthCheck} from '../health/HealthCheck.js';
import type {RoutePath, RouteHandler} from '../net/http/HttpRouteManger.js';
import type {IApiRoute} from './IApiRoute';
import type express from 'express';

export class HealthCheckApi implements IApiRoute {
  private readonly _getRoutes: Record<string, RouteHandler>;
  private readonly _postRoutes: Record<string, RouteHandler>;
  private readonly _putRoutes: Record<string, RouteHandler>;
  private readonly _deleteRoutes: Record<string, RouteHandler>;
  private readonly _healthCheck: HealthCheck;

  constructor(healthCheck: HealthCheck) {
    this._healthCheck = healthCheck;
    this._getRoutes = this.setupGETRoutes();
    this._postRoutes = this.setupPOSTRoutes();
    this._putRoutes = this.setupPUTRoutes();
    this._deleteRoutes = this.setupDELETERoutes();
  }

  public getGETRoutes(): Record<RoutePath, RouteHandler> {
    return this._getRoutes;
  }

  public getPOSTRoutes(): Record<RoutePath, RouteHandler> {
    return this._postRoutes;
  }

  public getPUTRoutes(): Record<RoutePath, RouteHandler> {
    return this._putRoutes;
  }

  public getDELETERoutes(): Record<RoutePath, RouteHandler> {
    return this._deleteRoutes;
  }

  private setupGETRoutes(): Record<RoutePath, RouteHandler> {
    return {
      '/_health': this.getHealth.bind(this)
    };
  }

  private setupPOSTRoutes(): Record<RoutePath, RouteHandler> {
    return {};
  }

  private setupPUTRoutes(): Record<RoutePath, RouteHandler> {
    return {};
  }

  private setupDELETERoutes(): Record<RoutePath, RouteHandler> {
    return {};
  }

  private getHealth(req: express.Request, res: express.Response): void {
    const health = this._healthCheck.getHealth();

    res.send(health);
  }
}