D-Net

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";

import {properties} from "../../environments/environment";

import {isArray} from "util";

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

@Injectable()

export class TimeoutInterceptor implements HttpInterceptor {

  private static TIMEOUT_WHITELIST = [properties.csvAPIURL];

  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' || this.isService(req, TimeoutInterceptor.TIMEOUT_WHITELIST)) {

      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));

  }

  isService(req: HttpRequest<any>, service: string | string[]):boolean {

    if(isArray(service)) {

      return !!service.find(element => req.url.indexOf(element) !== -1);

    } else {

      return req.url.indexOf(service) !== -1;

    }

  }

}