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

@Injectable()
export class AuthInterceptor implements HttpInterceptor {

    intercept(req: HttpRequest<any>,
              next: HttpHandler): Observable<HttpEvent<any>> {

        const user = JSON.parse(localStorage.getItem("user"));

        if (user && user.token) {
            const cloned = req.clone({
                headers: req.headers.set("Authorization",
                    "Bearer " + user.token)
            });

            return next.handle(cloned);
        }
        else {
            return next.handle(req);
        }
    }
}