RocketChat/Rocket.Chat

import { SystemLogger } from '../../../../server/lib/logger/system';
import { settings } from '../../../settings/server';

settings.watchMultiple(['SMTP_Host', 'SMTP_Port', 'SMTP_Username', 'SMTP_Password', 'SMTP_Protocol', 'SMTP_Pool', 'SMTP_IgnoreTLS'], () => {
    SystemLogger.info('Updating process.env.MAIL_URL');

    if (!settings.get('SMTP_Host')) {
        delete process.env.MAIL_URL;
        return;
    }

    process.env.MAIL_URL = `${settings.get('SMTP_Protocol')}://`;

    if (settings.get('SMTP_Username') && settings.get('SMTP_Password')) {
        process.env.MAIL_URL += `${encodeURIComponent(settings.get('SMTP_Username'))}:${encodeURIComponent(settings.get('SMTP_Password'))}@`;
    }

    process.env.MAIL_URL += encodeURIComponent(settings.get('SMTP_Host'));

    if (settings.get('SMTP_Port')) {
        process.env.MAIL_URL += `:${parseInt(settings.get('SMTP_Port'))}`;
    }

    process.env.MAIL_URL += `?pool=${settings.get('SMTP_Pool')}`;

    if (settings.get('SMTP_Protocol') === 'smtp' && settings.get('SMTP_IgnoreTLS')) {
        process.env.MAIL_URL += '&secure=false&ignoreTLS=true';
    }
});