// angular
import { ReflectiveInjector } from '@angular/core';
import { BaseRequestOptions, ConnectionBackend, Http } from '@angular/http';
import { MockBackend } from '@angular/http/testing';

let providers: Array<any> = [
  BaseRequestOptions,
  MockBackend,
  { provide: Http,
    useFactory: function (backend: ConnectionBackend, defaultOptions: BaseRequestOptions) {
      return new Http(backend, defaultOptions);
    },
    deps: [MockBackend, BaseRequestOptions]
  }
];

/*
* For instances where you need the injector
* @returns `ReflectiveInjector`
*/
export function GET_HTTP_PROVIDERS_INJECTOR(additionalProviders?: Array<any>): ReflectiveInjector {

  if (additionalProviders) {
    providers = providers.concat(additionalProviders);
  }

  return ReflectiveInjector.resolveAndCreate(providers);
}

/*
* For testing http services
* @returns `Array<any>`
*/
export function TEST_HTTP_PROVIDERS(): Array<any> {
  return providers;
}