import { HttpInterceptor,HttpHandler,HttpEvent,HttpRequest } from '@angular/common/http';

import { Injectable } from '@angular/core';

import { Router } from '@angular/router';

import { Observable } from 'rxjs';

@Injectable()

export class AuthInterceptor implements HttpInterceptor{

constructor(private router:Router){}

intercept(req: HttpRequest,next: HttpHandler): Observable>

{

if(req.headers.get('No-Auth') == "True")

{

return next.handle(req.clone());

}

if(window.sessionStorage.getItem('userToken')!=null){

const clonedReq=req.clone({

headers:req.headers.set("Authorization","Bearer " +window.sessionStorage.getItem('userToken'))

});

return next.handle(clonedReq);

}

else{

this.router.navigateByUrl("/Login");

}

}

}