import {BindingScope, injectable} from '@loopback/core';
import {NotificationType} from '../../enums';
import {WebhookNotificationServiceType} from '../../types';

/**
 * Service for handling notifications.
 * This service is responsible for sending notifications using the NotificationProxyService.
 * It uses the TemplateService to retrieve and compile the notification templates.
 */
@injectable({scope: BindingScope.SINGLETON})
export class NotificationService implements WebhookNotificationServiceType {
  /**
   * Constructs a new instance of the NotificationService.
   * @param {TemplateService} templateService - Service for handling templates.
   * @param {NotificationProxyService} notificationProxyService - Service for sending notifications.
   */
  constructor() {}
  /**
   * The `send` function sends an email notification with a given email address,
   * notification type, data, and authentication token.
   * @param {string} email - The email address of the recipient.
   * @param {string} type - The `type` parameter is a string that represents the type
   * of email being sent. It is used to determine which template and subject to use
   * for the email.
   * @param {T} data - The `data` parameter is a generic type `T` which represents
   * the data that will be used to populate the email template. It can be any type of
   * data, depending on the specific use case.
   * @param {string} token - A string representing the authentication token for the
   * user sending the email.
   * @returns the result of the createNotification api call.
   */
  async send<T>(email: string, type: NotificationType, data: T, token: string) {
    // implement service here
    // const notification = {
    //   subject: 'subject',
    //   body: 'body',
    //   receiver: {
    //     to: [
    //       {
    //         id: email,
    //       },
    //     ],
    //   },
    //   type: 1,
    //   sentDate: new Date(),
    //   options: {
    //     from: process.env.FROM_EMAIL,
    //     html: 'body',
    //   },
    // };
    // return notification;
  }
}