Files
invoice-system/src/services/email-service.js
2026-07-07 13:43:00 -05:00

188 lines
7.1 KiB
JavaScript

// src/services/email-service.js
//
// Versendet Invoice-Mails über den Docker-Mailserver (SMTP-Relay) statt
// direkt über das SESv2-SDK. Dadurch nehmen Invoice-Mails EXAKT denselben
// Weg wie die funktionierenden Outlook-Mails: gleiche Sende-IP, gleiche
// Header-Profile, gleiche Message-ID-Erzeugung durch den MTA.
//
// Der Docker-Mailserver relayed anschließend selbst über Amazon SES.
//
// Benötigte Env-Variablen:
// SMTP_HOST z.B. mail.bayarea-cc.com (dein Docker-Mailserver)
// SMTP_PORT 587 (STARTTLS) oder 465 (implizit TLS)
// SMTP_USER accounting@bayarea-cc.com
// SMTP_PASS <mailbox-passwort>
// SMTP_SECURE "true" für Port 465, sonst "false" (STARTTLS auf 587)
// MAIL_FROM optional, default: accounting@bayarea-cc.com
// MAIL_FROM_NAME optional, default: Bay Area Affiliates Inc. Accounting
// MAIL_BCC optional; leer lassen, um kein BCC zu setzen
const nodemailer = require('nodemailer');
const mjml2html = require('mjml');
const SMTP_HOST = process.env.SMTP_HOST || 'smtp.bayarea-cc.com';
const SMTP_PORT = parseInt(process.env.SMTP_PORT || '465', 10);
const SMTP_SECURE = String(process.env.SMTP_SECURE || 'true').toLowerCase() === 'true';
const SMTP_USER = process.env.SMTP_USER || 'accounting@bayarea-cc.com';
const SMTP_PASS = process.env.SMTP_PASS;
const MAIL_FROM = process.env.MAIL_FROM || 'accounting@bayarea-cc.com';
const MAIL_FROM_NAME = process.env.MAIL_FROM_NAME || 'Bay Area Affiliates Inc. Accounting';
// BCC ist standardmäßig LEER — die auffällige Selbst-BCC war ein Filter-Trigger
// bei M365. Wer eine Kopie will, setzt MAIL_BCC explizit.
const MAIL_BCC = process.env.MAIL_BCC || '';
// ------------------------------------------------------------
// SMTP-Transport über den Docker-Mailserver
// ------------------------------------------------------------
const transporter = nodemailer.createTransport({
host: SMTP_HOST,
port: SMTP_PORT,
secure: SMTP_SECURE, // true = 465, false = 587 (STARTTLS)
auth: SMTP_USER && SMTP_PASS ? { user: SMTP_USER, pass: SMTP_PASS } : undefined,
requireTLS: !SMTP_SECURE, // erzwingt STARTTLS auf 587
tls: {
// Docker-Mailserver mit eigenem/Caddy-Wildcard-Cert: normal validieren.
// Nur auf true setzen, falls du mit self-signed testest.
rejectUnauthorized: String(process.env.SMTP_TLS_INSECURE || 'false').toLowerCase() !== 'true',
},
});
/**
* Prüft die SMTP-Verbindung (Login + TLS). Praktisch fürs CLI-Testen.
*/
async function verifyConnection() {
return transporter.verify();
}
function generateInvoiceEmailHtml(invoice, customText, stripePaymentUrl) {
const formattedText = customText || '';
// Stripe Pay Button — only if payment link exists
let paymentButtonMjml = '';
if (stripePaymentUrl) {
paymentButtonMjml = `
<mj-section background-color="#ffffff" padding="0 30px">
<mj-column>
<mj-button
background-color="#635bff"
color="white"
border-radius="6px"
href="${stripePaymentUrl}"
font-weight="600"
font-size="16px"
padding="25px 0 10px 0"
inner-padding="14px 30px"
width="100%">
Pay Online — Credit Card or ACH
</mj-button>
<mj-text font-size="12px" color="#94a3b8" align="center" padding="0 0 20px 0">
ACH payments incur lower processing fees. Secure payment powered by Stripe.
</mj-text>
</mj-column>
</mj-section>`;
}
const template = `
<mjml>
<mj-head>
<mj-attributes>
<mj-all font-family="ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif" />
</mj-attributes>
<mj-style inline="inline">
.email-body p {
margin: 0 0 14px 0 !important;
}
.email-body p:last-child {
margin-bottom: 0 !important;
}
</mj-style>
</mj-head>
<mj-body background-color="#f4f4f5">
<mj-section padding="0">
<mj-column>
<mj-spacer height="20px" />
</mj-column>
</mj-section>
<mj-section background-color="#ffffff" padding="30px" border-radius="8px 8px 0 0">
<mj-column>
<mj-text font-size="22px" font-weight="700" color="#1e3a8a" padding="0">
Bay Area Affiliates, Inc.
</mj-text>
<mj-text font-size="15px" color="#64748b" padding="5px 0 0 0">
Invoice #${invoice.invoice_number || invoice.id}
</mj-text>
</mj-column>
</mj-section>
<mj-section background-color="#ffffff" padding="0 30px 30px 30px">
<mj-column>
<mj-text css-class="email-body" font-size="15px" color="#334155" line-height="1.5" padding="0">
${formattedText}
</mj-text>
</mj-column>
</mj-section>
${paymentButtonMjml}
<mj-section background-color="#ffffff" padding="0 30px 30px 30px" border-radius="0 0 8px 8px">
<mj-column>
<mj-divider border-color="#e2e8f0" border-width="1px" padding-top="10px" padding-bottom="20px" />
<mj-text font-size="14px" color="#64748b" line-height="1.5" padding="0">
<strong>Prefer to pay by check?</strong><br/>
Please make checks payable to Bay Area Affiliates, Inc. and mail to:<br/>
1001 Blucher Street<br/>
Corpus Christi, Texas 78401
</mj-text>
</mj-column>
</mj-section>
</mj-body>
</mjml>
`;
const result = mjml2html(template, { validationLevel: 'strict' });
if (result.errors && result.errors.length > 0) {
console.error('MJML Parse Errors:', result.errors);
}
return result.html;
}
async function sendInvoiceEmail(invoice, recipients, customText, stripePaymentUrl, pdfBuffer) {
const htmlContent = generateInvoiceEmailHtml(invoice, customText, stripePaymentUrl);
// Akzeptiert String oder Array
const toList = Array.isArray(recipients)
? recipients
: [recipients].filter(Boolean);
const mailOptions = {
from: `"${MAIL_FROM_NAME}" <${MAIL_FROM}>`,
to: toList.join(', '),
subject: `Invoice #${invoice.invoice_number || invoice.id} from Bay Area Affiliates, Inc.`,
html: htmlContent,
attachments: [],
};
// BCC nur setzen, wenn explizit gewünscht
if (MAIL_BCC) {
mailOptions.bcc = MAIL_BCC;
}
// PDF-Anhang nur, wenn vorhanden (fürs CLI-Testen optional)
if (pdfBuffer) {
mailOptions.attachments.push({
filename: `Invoice_${invoice.invoice_number || invoice.id}_BayAreaAffiliates.pdf`,
content: pdfBuffer,
contentType: 'application/pdf',
});
}
return await transporter.sendMail(mailOptions);
}
module.exports = { sendInvoiceEmail, generateInvoiceEmailHtml, verifyConnection, transporter };