opt-cc/static/src/app/services/user-interface/snack-bar/snack-bar.service.ts

import {Injectable} from '@angular/core';
import {MatSnackBar, MatSnackBarRef} from '@angular/material/snack-bar';

@Injectable()
export class SnackBarService {
  constructor(private snackbar: MatSnackBar) {
  }

  private show(message: string, action?: string, duration?: number, panelClasses?: string[]): MatSnackBarRef<any> {
    const config = {};
    if (duration) {
      config['duration'] = duration;
    }

    if (action) {
      if (panelClasses) {
        panelClasses.push('snack-bar-button');
      } else {
        panelClasses = ['snack-bar-button'];
      }
    }

    if (panelClasses) {
      config['panelClass'] = panelClasses;
    }

    return this.snackbar.open(message, action, config);
  }

  showSuccess(message: string) {
    return this.show(message, undefined, 2500, ['custom-snack-bar', 'label-success']);
  }

  showError(message: string, duration?: number) {
    return this.show(message, 'OK', duration, ['custom-snack-bar', 'label-danger']);
  }
}