onLoginSubmit(){
    //console.log(this.username);
    const user = {
      username: this.username,
      password: this.password
    }

    this.authService.authenticateUser(user).subscribe(data => {
      //console.log(data);
      if(data.success){
      this.authService.storeUserData(data.token, data.user);

      this.flashMessage.show('You are now logged in', {
        cssClass: 'alert-success',
        timeout: 5000});
      this.router.navigate(['dashboard']);

    }else{
      this.flashMessage.show(data.msg, {
        cssClass: 'alert-danger',
        timeout: 5000});
      this.router.navigate(['login']);
    }

    });
  }