import {Inject, Injectable, InjectionToken, PLATFORM_ID} from '@angular/core';
import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from '@angular/common/http';
import { Observable } from 'rxjs';
import { timeout } from 'rxjs/operators';
import {isPlatformServer} from "@angular/common";

export const DEFAULT_TIMEOUT = new InjectionToken<number>('defaultTimeout');

@Injectable()
export class TimeoutInterceptor implements HttpInterceptor {
  constructor(@Inject(DEFAULT_TIMEOUT) protected defaultTimeout: number, @Inject(PLATFORM_ID) private platformId: any) {
  }

  intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
    if (req.method !== 'GET') {
      return next.handle(req);
    }

    const timeoutValue = isPlatformServer(this.platformId)?3000:6000;//req.headers.get('timeout') || this.defaultTimeout;
    const timeoutValueNumeric = Number(timeoutValue);
    return next.handle(req).pipe(timeout(timeoutValueNumeric));
  }
}