mashafrancis/butternut-user

import { google } from 'googleapis';
import { createTransport, SendMailOptions, SentMessageInfo } from 'nodemailer';
import { TwingEnvironment, TwingLoaderFilesystem } from 'twing';
import { config } from '../../../config';

export async function mail(options: SendMailOptions): Promise<SentMessageInfo> {
    const OAuth2 = google.auth.OAuth2;

    const oauth2Client = new OAuth2(
        config.google.mailClientId,
        config.google.mailClientSecret,
        'https://developers.google.com/oauthplayground',
    );

    oauth2Client.setCredentials({
        refresh_token: config.google.mailRefreshToken,
    });

    const accessToken = oauth2Client.getAccessToken();

    const transporter = createTransport({
        service: 'gmail',
        auth: {
            accessToken,
            type: 'OAuth2',
            user: 'butternut.froyo@gmail.com',
            clientId: config.google.mailClientId,
            clientSecret: config.google.mailClientSecret,
            refreshToken: config.google.mailRefreshToken,
        },
    } as any);

    return transporter.sendMail({ ...options, from: config.mail.from });
}

export function renderTemplate(path: string, data: any): string {
    const loader = new TwingLoaderFilesystem(config.assetsPath);
    const twing = new TwingEnvironment(loader);
    return twing.render(path, data);
}