@tmlmobilidade/emails/dist/email.provider.js

/* * */
import { asyncSingletonProxy } from '@tmlmobilidade/utils';
import nodemailer from 'nodemailer';
/* * */
export class EmailProvider {
    //
    static _instance;
    _smtpTransporter;
    /**
     * 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 the SMTP server and return the transporter instance.
     */
    async connect() {
        try {
            // Check for required environment variables
            if (!process.env.TML_PROVIDER_EMAIL_SERVER_HOST)
                throw new Error('Missing required environment variable: TML_PROVIDER_EMAIL_SERVER_HOST');
            if (!process.env.TML_PROVIDER_EMAIL_SERVER_PORT)
                throw new Error('Missing required environment variable: TML_PROVIDER_EMAIL_SERVER_PORT');
            if (!process.env.TML_PROVIDER_EMAIL_AUTH_CLIENT_ID)
                throw new Error('Missing required environment variable: TML_PROVIDER_EMAIL_AUTH_CLIENT_ID');
            if (!process.env.TML_PROVIDER_EMAIL_AUTH_CLIENT_SECRET)
                throw new Error('Missing required environment variable: TML_PROVIDER_EMAIL_AUTH_CLIENT_SECRET');
            if (!process.env.TML_PROVIDER_EMAIL_AUTH_ACCESS_URL)
                throw new Error('Missing required environment variable: TML_PROVIDER_EMAIL_AUTH_ACCESS_URL');
            if (!process.env.TML_PROVIDER_EMAIL_AUTH_REFRESH_TOKEN)
                throw new Error('Missing required environment variable: TML_PROVIDER_EMAIL_AUTH_REFRESH_TOKEN');
            if (!process.env.TML_PROVIDER_EMAIL_AUTH_USER)
                throw new Error('Missing required environment variable: TML_PROVIDER_EMAIL_AUTH_USER');
            if (!process.env.TML_PROVIDER_EMAIL_FROM)
                throw new Error('Missing required environment variable: TML_PROVIDER_EMAIL_FROM');
            // Connect to the SMTP server
            this._smtpTransporter = nodemailer.createTransport({
                auth: {
                    accessUrl: process.env.TML_PROVIDER_EMAIL_AUTH_ACCESS_URL,
                    clientId: process.env.TML_PROVIDER_EMAIL_AUTH_CLIENT_ID,
                    clientSecret: process.env.TML_PROVIDER_EMAIL_AUTH_CLIENT_SECRET,
                    refreshToken: process.env.TML_PROVIDER_EMAIL_AUTH_REFRESH_TOKEN,
                    type: 'OAuth2',
                    user: process.env.TML_PROVIDER_EMAIL_AUTH_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),
            });
            return this._smtpTransporter;
        }
        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(sendMailOptions) {
        try {
            await this._smtpTransporter.sendMail({
                ...this._smtpTransporter.options,
                ...sendMailOptions,
            });
        }
        catch (error) {
            throw new Error('Error sending email', { cause: error });
        }
    }
}
export const emailProvider = asyncSingletonProxy(EmailProvider);