@tmlmobilidade/interfaces/dist/src/providers/email/email.js

This package provides SDK-style connectors for interacting with databases (e.g., stops, plans, rides, alerts) and external providers (e.g., authentication, storage). It simplifies data access and integration across projects.

/* * */
import { AsyncSingletonProxy } from '@tmlmobilidade/utils';
import nodemailer from 'nodemailer';
/* * */
export class EmailProvider {
    //
    static _instance;
    _smtp_transporter;
    /**
     * Return the instance of the EmailProvider.
     */
    static async getInstance() {
        if (!EmailProvider._instance) {
            const instance = new EmailProvider();
            await instance.connect();
            EmailProvider._instance = instance;
        }
        return EmailProvider._instance;
    }
    /**
     * Connect to MongoDB and return the database instance.
     */
    async connect() {
        try {
            // Check for required environment variables
            if (!process.env.TML_PROVIDER_EMAIL_SERVER_PASSWORD)
                throw new Error('Missing TML_PROVIDER_EMAIL_SERVER_PASSWORD environment variable!');
            if (!process.env.TML_PROVIDER_EMAIL_SERVER_USER)
                throw new Error('Missing TML_PROVIDER_EMAIL_SERVER_USER environment variable!');
            if (!process.env.TML_PROVIDER_EMAIL_FROM)
                throw new Error('Missing TML_PROVIDER_EMAIL_FROM environment variable!');
            if (!process.env.TML_PROVIDER_EMAIL_SERVER_HOST)
                throw new Error('Missing TML_PROVIDER_EMAIL_SERVER_HOST environment variable!');
            if (!process.env.TML_PROVIDER_EMAIL_SERVER_PORT)
                throw new Error('Missing TML_PROVIDER_EMAIL_SERVER_PORT environment variable!');
            // Create the SMTP transporter
            const smtpTransportOptions = {
                auth: {
                    pass: process.env.TML_PROVIDER_EMAIL_SERVER_PASSWORD,
                    user: process.env.TML_PROVIDER_EMAIL_SERVER_USER,
                },
                from: process.env.TML_PROVIDER_EMAIL_FROM,
                host: process.env.TML_PROVIDER_EMAIL_SERVER_HOST,
                port: Number(process.env.TML_PROVIDER_EMAIL_SERVER_PORT),
            };
            // Connect to the SMTP server
            this._smtp_transporter = nodemailer.createTransport(smtpTransportOptions);
            return this._smtp_transporter;
        }
        catch (error) {
            throw new Error('Error connecting to SMTP server', { cause: error });
        }
    }
    /**
     * Send an email.
     *
     * @param emailOptions - The email options.
     * @returns A promise that resolves when the email is sent.
     */
    async send({ html, subject, to, ...options }) {
        try {
            await this._smtp_transporter.sendMail({
                ...this._smtp_transporter.options,
                html,
                subject,
                to,
                ...options,
            });
        }
        catch (error) {
            throw new Error('Error sending email', { cause: error });
        }
    }
}
export const emailProvider = AsyncSingletonProxy(EmailProvider);