import { NaHttpInterceptorPreparable, NaHttpRequestHandler } from '../na-http-interceptor-preparable';
import { HttpRequest } from '@angular/common/http';
import { NaHttpService } from '../../na-http.service';

/**
 * 处理url和withCredentials
 *
 * @export
 * @class NaBaseurlInterceptorPreparable
 * @implements {NaHttpInterceptorPreparable}
 */
export class NaBaseurlInterceptorPreparable implements NaHttpInterceptorPreparable {
  private readonly method = ['POST', 'PUT', 'PATCH'];

  constructor(protected naHttpService: NaHttpService) { }

  prepare(req: HttpRequest<any>, next: NaHttpRequestHandler): HttpRequest<any> {
    let url = req.url;
    if (!(url.startsWith('http://') || url.startsWith('https://') || url.startsWith('./'))) {
      url = this.naHttpService.concatUrl(this.naHttpService.baseUrl, url);
    }
    let newReq = req;
    if (this.method.indexOf(req.method) >= 0) {
      newReq = req.clone({
        url: url,
        withCredentials: true
      });
    } else {
      newReq = req.clone({
        url: url,
        withCredentials: true
      });
    }
    return next.handle(newReq);
  }
}