import { Injectable } from '@angular/core';
import { HttpClient, HttpErrorResponse } from '@angular/common/http';
import { IEmployee } from './employee';
//import { Observable } from 'rxjs';
import { throwError } from 'rxjs';
import { catchError, retry } from 'rxjs/operators';

@Injectable({
   providedIn: 'root'
})
export class EmployeeService {
  private _url: string = "/assets/data/employees.json"

  constructor(private http: HttpClient) { }

  getEmployees(): Observable<IEmployee[]>{
    return this.http.get<IEmployee[]>(this._url)
      .pipe(
        catchError(this.errorHandler)
      );
  }
  errorHandler(error: HttpErrorResponse){
    return throwError(error);
  }
}