onPhotoChange(event: any): void {
    const file = event.target.files[0];

    if (!file || !(/image\/(gif|jpg|jpeg|png)$/i).test(file.type)) {
      return;
    }

    this.photo = file;
    const reader = new FileReader();

    reader.readAsDataURL(file);

    reader.onload = () => {
      this.photoUrl = reader.result;
    };
  }