import { Injectable } from '@angular/core';
import { v4 as uuid } from 'uuid';

interface ToastOptions {
  id: string;
  header: string;
  message: string;
  alertClass: 'danger' | 'warning' | 'info';
  delay?: number;
}

@Injectable({
  providedIn: 'root'
})
export class ToastService {
  public toasts: ToastOptions[] = [];

  constructor() {}

  public error(message: string, header: string, delay?: number) {
    this.toasts.push({
      id: uuid(),
      message,
      header,
      alertClass: 'danger',
      delay
    });
  }

  public warning(message: string, header: string, delay?: number) {
    this.toasts.push({
      id: uuid(),
      message,
      header,
      alertClass: 'warning',
      delay
    });
  }
  public info(message: string, header: string, delay?: number) {
    this.toasts.push({
      id: uuid(),
      message,
      header,
      alertClass: 'info',
      delay
    });
  }

  public remove(id: string) {
    const idx = this.toasts.findIndex(t => t.id === id);
    if (idx >= 0) this.toasts.splice(idx, 1);
  }
}