import { LocalStorageService } from 'angular-2-local-storage';
import { Injectable } from '@angular/core';
import { BaseRequestOptions, RequestOptions, Request, XHRBackend, XHRConnection} from '@angular/http';


// TODO: Chnage this to use Covalent Http helper service
// https://www.npmjs.com/package/@covalent/http 

@Injectable()
export class DefaultRequestOptions extends BaseRequestOptions {

  constructor(private store: LocalStorageService) {
    super();

    // Set the default 'Content-Type' header
    this.headers.set('Content-Type', 'application/json');
    let token = this.store.get<string>('token');
    if (token) {
        this.headers.set('X-SECURIS-TOKEN', token);
    }    
    
  }
}

@Injectable()
export class ApiXHRBackend extends XHRBackend {
    createConnection(request: Request): XHRConnection {
        if (request.url.startsWith('/')){
           // request.url = '/securis' + request.url;     // prefix base url
        }
        return super.createConnection(request);
    }
}

export const requestOptionsProvider = { provide: RequestOptions, useClass: DefaultRequestOptions };

export const requestBackendProvider = { provide: XHRBackend, useClass: ApiXHRBackend };