Parent.ts

import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { IParent } from './interfaces';
import { WpApiLoader } from './Loaders';


/******************************************************************************
* Service: WpApiParent
******************************************************************************/
@Injectable()
export class WpApiParent implements IParent {

  constructor(
    public wpApiLoader: WpApiLoader,
    public http: HttpClient
  ) { }

  httpGet(url: string, options = {}) {
    return this.http.get(this.wpApiLoader.getWebServiceUrl(url), options);
  }
  httpHead(url: string, options = {}) {
    return this.http.head(this.wpApiLoader.getWebServiceUrl(url), options);
  }
  httpDelete(url: string, options = {}) {
    return this.http.delete(this.wpApiLoader.getWebServiceUrl(url), options);
  }
  httpPost(url: string, body = {}, options = {}) {
    return this.http.post(this.wpApiLoader.getWebServiceUrl(url), body, options);
  }
  httpPut(url: string, body = {}, options = {}) {
    return this.http.put(this.wpApiLoader.getWebServiceUrl(url), body, options);
  }
  httpPatch(url: string, body = {}, options = {}) {
    return this.http.patch(this.wpApiLoader.getWebServiceUrl(url), body, options);
  }
}