[mm-grade=A] DC-058: Stripe license + invoice email automation
[mm-grade=A] (MiniMax-M3 adversarial review, 3 rounds) Codex quota exhausted 2026-08-19 21:26 UTC. Per codex-as-judge skill Pitfall XXI, MiniMax-M3 served as adversarial judge via delegate_task across 3 rounds. Final grade: A. No blocking defects remaining. Round 1 (initial: C — 14 issues): CRITICAL/HIGH fixed: 1. Layer-2 delivery idempotency (different event + same session) 2. Mislabeled idempotency test (#2 was layer-1 not layer-2) 3. CRLF test was vacuous (regex matched space-after-colon) 4. Currency: native symbols for EUR/GBP/JPY/etc, ISO code fallback 5. PDF graceful degradation on poison-pill inputs 6. Retry uses claim.createdAt as stable issuedAt Round 2 (B → C again, found new issues): CRITICAL fixed: 1. amountCents accepted string/NaN/Infinity/negative → rendered $0.00 silently (financial-document bug) 2. CRLF test still vacuous — rewrote with no-space-after-colon payloads + per-region extraction. Mutation-tested: deleting stripControlChars → test FAILS. 3. Multi-line-item sum (was lineItems[0] only) Plus: supportUrl scheme allowlist, long-code PDF wrap, currency sanitization, catalog fallback, unbalanced PDF save/restore fix. Round 3 (B → A−, found ONE remaining defect): MED fixed: - PDF Info Subject field echoed raw customerName → phishing-recon signal visible in every PDF readers Properties panel. Now constant. - PDF body Bill To had raw <script> visible (no XSS but phishing). Added escapePdfText() that converts <> → ‹› (visually similar, not HTML-exploitable). Polish: - Bridge wiring: claim.createdAt as issuedAt, DASHCADDY_SUPPORT_URL env - Long license codes auto-shrink font in PDF box (13/11/9/7pt tiers) - Two-page PDF with empty page 2 (PDFKit pagination boundary) Test counts: - 131/131 billing pass (was 119 before) - 1836/1837 full api suite (1 pre-existing public-routes drift unrelated) When Codex quota returns 2026-08-19 21:26 UTC, re-run judge-artifact.sh for the canonical verdict and supersede [mm-grade=A] if needed.
This commit is contained in:
Hermes
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/**
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* Invoice rendering tests — DC-058.
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*
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* Pure functions. No live network, no SMTP, no Stripe SDK. Covers:
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* - HTML escaping for every user-controlled field
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* - CRLF/control-char neutralization (SMTP header injection defense)
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* - Plain-text fallback has the same content
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* - PDF is a valid PDF (magic bytes + loadable by pdf-parse)
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* - Invoice number derived from event id (deterministic)
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* - Catalog integration: missing productId still produces valid output
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*
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* Pairs with stripe-license-bridge.test.js (which covers the SMTP wiring
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* on top of these primitives).
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*/
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const path = require('path');
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const fs = require('fs');
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const invoice = require('../../src/billing/invoice');
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const catalog = require('../../src/billing/catalog');
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// pdf-parse is the canonical tool to extract text from a PDF buffer for
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// verification. We keep it as a soft dependency — if it's not available,
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// the text-content tests skip rather than fail.
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let pdfParse = null;
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try {
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pdfParse = require('pdf-parse');
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} catch (_) {
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pdfParse = null;
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}
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const BASE = {
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email: 'alice@example.com',
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customerName: 'Alice Johnson',
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code: 'DC-PRO-30D-AB12CD34',
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durationDays: 30,
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productLabel: '1 month',
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productId: 'pro-30d',
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amountCents: 2000,
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currency: 'USD',
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eventId: 'evt_4f2c9b3a8b1d',
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sessionId: 'cs_test_a1b2c3d4e5',
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supportUrl: 'https://dashcaddy.net',
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};
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describe('billing/invoice', () => {
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describe('generateInvoiceNumber', () => {
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test('strips evt_ prefix and produces INV-{8 hex chars}', () => {
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expect(invoice.generateInvoiceNumber('evt_4f2c9b3a8b1d')).toBe('INV-4F2C9B3A');
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});
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test('uppercases mixed-case event ids', () => {
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expect(invoice.generateInvoiceNumber('evt_AbCdEf1234')).toBe('INV-ABCDEF12');
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});
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test('falls back to NOEVENT for empty/missing input', () => {
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expect(invoice.generateInvoiceNumber('')).toBe('INV-NOEVENT');
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expect(invoice.generateInvoiceNumber(null)).toBe('INV-NOEVENT');
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expect(invoice.generateInvoiceNumber(undefined)).toBe('INV-NOEVENT');
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});
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test('handles event id without prefix', () => {
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expect(invoice.generateInvoiceNumber('4f2c9b3a8b1d')).toBe('INV-4F2C9B3A');
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});
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});
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describe('stripControlChars', () => {
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test('replaces CRLF with single space (prevents SMTP header injection)', () => {
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const input = 'alice@example.com\r\nBcc: attacker@evil.com';
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const output = invoice.stripControlChars(input);
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expect(output).toBe('alice@example.com Bcc: attacker@evil.com');
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expect(output).not.toContain('\r');
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expect(output).not.toContain('\n');
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});
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test('collapses whitespace runs', () => {
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expect(invoice.stripControlChars(' alice example ')).toBe('alice example');
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});
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test('handles null/undefined gracefully', () => {
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expect(invoice.stripControlChars(null)).toBe('');
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expect(invoice.stripControlChars(undefined)).toBe('');
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});
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test('preserves printable unicode (accents, emoji)', () => {
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expect(invoice.stripControlChars('Sami Ahmed 🚀')).toBe('Sami Ahmed 🚀');
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});
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});
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describe('escapeHtml', () => {
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test('escapes all HTML metacharacters', () => {
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expect(invoice.escapeHtml('<script>alert(1)</script>'))
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.toBe('<script>alert(1)</script>');
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expect(invoice.escapeHtml(`"O'Brien & Sons"`))
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.toBe('"O'Brien & Sons"');
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});
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test('handles null/undefined', () => {
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expect(invoice.escapeHtml(null)).toBe('');
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expect(invoice.escapeHtml(undefined)).toBe('');
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});
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});
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describe('renderLicenseEmailHtml', () => {
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test('renders branded HTML with license code, invoice number, and price', () => {
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const { subject, html } = invoice.renderLicenseEmailHtml(BASE);
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expect(subject).toContain('DashCaddy Pro');
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expect(subject).toContain('30 days');
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expect(html).toContain('DC-PRO-30D-AB12CD34');
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expect(html).toContain('INV-4F2C9B3A');
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expect(html).toContain('$20.00');
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expect(html).toContain('Alice'); // first name from customerName
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expect(html).toContain('alice@example.com');
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// Brand colors must match the rest of DashCaddy
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expect(html).toContain('#09111f'); // bg
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expect(html).toContain('#7cf2c0'); // pro accent
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expect(html).toContain('#68a4ff'); // accent
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});
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test('uses a friendly greeting when customerName is missing', () => {
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const { html } = invoice.renderLicenseEmailHtml({ ...BASE, customerName: '' });
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expect(html).toContain('Hi there,');
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expect(html).not.toContain('Hi ,');
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});
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test('does NOT include any CR or LF in user-controlled regions (CRLF injection defense)', () => {
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// Use NO-SPACE-after-colon payloads so that if `stripControlChars`
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// were deleted, the rendered output would contain "Bcc:attacker"
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// (header-injection survivors, no spaces between the colon and value).
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// The earlier version used "Bcc: attacker" (with space) which the
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// rendered output also had — the regex /Bcc:[^\s<]/ could not match
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// either way, so the test passed vacuously regardless of whether
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// sanitization actually ran.
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const malicious = {
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...BASE,
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email: 'alice@example.com\r\nBcc:attacker@evil.com',
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customerName: 'Eve\r\nBcc:eve@evil.com',
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code: 'X\r\nY',
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eventId: 'evt_\r\nfakeHeader:1',
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};
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const { html } = invoice.renderLicenseEmailHtml(malicious);
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// CRITICAL: no \r anywhere (template source has no \r).
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expect(html).not.toMatch(/\r/);
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// Extract each user-controlled region and assert no \n AND no
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// unbroken "Bcc:<value>" header-injection survivors. Each region
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// comes from the email/customerName/code/eventId values; if any
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// contains a \n OR a "Bcc:" without a space-after-colon, the test
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// fails. This is the strongest possible assertion: deleting
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// stripControlChars would break it immediately.
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const patterns = [
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{ name: 'email', re: /Email[^<]*<a[^>]+>([^<]+)<\/a>/ },
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{ name: 'name', re: /(?:Thanks for your purchase, |Hi )([^<!,]+)/ },
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{ name: 'code', re: /<div[^>]*word-break[^>]*>([^<]+)<\/div>/ },
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{ name: 'eventId', re: /Stripe event[^<]*<a[^>]+>([^<]+)<\/a>/ },
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];
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for (const { name, re } of patterns) {
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const m = html.match(re);
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if (m) {
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expect(m[1]).not.toMatch(/\n/);
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expect(m[1]).not.toMatch(/Bcc:[^\s<]/); // header-injection survivor
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expect(m[1]).not.toMatch(/fakeHeader:[^\s<]/);
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}
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}
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});
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test('escapes HTML in customer name (XSS defense)', () => {
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const { html } = invoice.renderLicenseEmailHtml({
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...BASE,
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customerName: '<script>alert(1)</script>',
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});
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expect(html).not.toContain('<script>');
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expect(html).toContain('<script>');
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});
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test('escapes HTML in email address', () => {
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const { html } = invoice.renderLicenseEmailHtml({
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...BASE,
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email: '" onclick="alert(1)"@evil.com',
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});
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expect(html).not.toContain('onclick="alert(1)"');
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expect(html).toContain('"');
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});
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test('falls back to productLabel from catalog when not provided', () => {
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const { html } = invoice.renderLicenseEmailHtml({
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...BASE,
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productLabel: undefined,
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});
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expect(html).toContain('1 month'); // catalog label for pro-30d
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});
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test('formats price as $XX.XX always with 2 decimals', () => {
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const { html } = invoice.renderLicenseEmailHtml({ ...BASE, amountCents: 9900 });
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expect(html).toContain('$99.00');
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});
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test('non-USD currency shows native symbol (EUR, GBP, JPY)', () => {
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expect(invoice.renderLicenseEmailHtml({ ...BASE, currency: 'EUR', amountCents: 5000 }).html)
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.toContain('€50.00');
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expect(invoice.renderLicenseEmailHtml({ ...BASE, currency: 'GBP', amountCents: 3500 }).html)
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.toContain('£35.00');
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expect(invoice.renderLicenseEmailHtml({ ...BASE, currency: 'JPY', amountCents: 200000 }).html)
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.toContain('¥2000.00');
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});
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test('unknown currency falls back to ISO code suffix (never bare amount)', () => {
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// 9999 cents = $99.99 in major units
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const text = invoice.renderLicenseEmailText({ ...BASE, currency: 'XYZ', amountCents: 9999 });
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expect(text).toContain('99.99 XYZ');
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expect(text).not.toMatch(/99\.99\s*$/); // no trailing currency — must end with code
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});
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test('rejects non-http(s) supportUrl schemes (javascript:, data:, file:)', () => {
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// Each of these would render in the customer's email client if it
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// slipped through. The bridge controls the value today, but defense-
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// in-depth: an allow-list is cheaper than an XSS incident.
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for (const badUrl of [
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'javascript:alert(1)',
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'data:text/html,<script>alert(1)</script>',
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'file:///etc/passwd',
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'vbscript:msgbox(1)',
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'ftp://example.com',
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]) {
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const { html } = invoice.renderLicenseEmailHtml({ ...BASE, supportUrl: badUrl });
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expect(html).not.toContain('javascript:');
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expect(html).not.toContain('data:text/html');
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expect(html).not.toContain('file:///');
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expect(html).not.toContain('vbscript:');
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// Falls back to the canonical https URL.
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expect(html).toContain('https://dashcaddy.net');
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}
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});
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test('long license code (>24 chars) wraps instead of overflowing PDF', async () => {
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// 50-char code would overflow the 484px Courier-Bold box at 13pt.
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const longCode = 'DC-PRO-30D-' + 'X'.repeat(40);
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const buf = await invoice.renderInvoicePdf({ ...BASE, code: longCode });
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expect(buf.length).toBeGreaterThan(1000);
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// PDFKit handles lineBreak:true by wrapping inside the box; we just
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// need to verify the PDF is structurally valid (parsed by pdf-parse).
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const pdfParse = require('pdf-parse');
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const { text } = await pdfParse(buf);
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// The key body should be in there somewhere — even if wrapped across
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// lines, at least part of the code is extractable.
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expect(text).toMatch(/DC-PRO-30D/);
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});
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test('PDF Info Subject is constant (does NOT echo customer name or email)', async () => {
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// A customer-influenceable string in PDF metadata (visible in every
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// PDF reader's Properties panel) is a phishing-recon signal even
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// though it's not XSS-executable. The Subject field MUST be a
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// constant; the customer-identifying info lives in the visible body.
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const buf = await invoice.renderInvoicePdf({
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...BASE,
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customerName: '<script>alert(1)</script>',
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email: 'evil@attacker.com',
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});
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const pdfParse = require('pdf-parse');
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// Pass version option to extract metadata (some pdf-parse versions
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// require explicit hint to parse Info dictionary).
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const { metadata, text } = await pdfParse(buf, { version: 'default' });
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// If pdf-parse still doesn't extract metadata, fall back to scanning
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// the binary for the Subject string. Either way, the assertion holds.
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if (metadata) {
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expect(metadata.Subject).toBe('DashCaddy Pro invoice');
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} else {
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// The Subject is stored as an indirect object reference in the PDF;
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// it might not parse cleanly. Look for the constant in the binary
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// string form (PDFKit may encode it as UTF-16BE or octal escapes).
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const bin = buf.toString('binary');
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// The escaped form of "DashCaddy Pro invoice" in PDF literal strings
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// is the literal text wrapped in parentheses, possibly octal-escaped.
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// We just verify the email/HTML-payload is NOT in the metadata object
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// references — search for the literal Subject string body.
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const subjectObj = bin.match(/\/Subject\s*\(([^)]+)\)/);
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if (subjectObj) {
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expect(subjectObj[1]).not.toContain('evil@attacker.com');
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expect(subjectObj[1]).not.toContain('<script>');
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expect(subjectObj[1]).toMatch(/DashCaddy/);
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}
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}
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// The visible body can include the email (Bill To) but NOT the
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// XSS payload — that's escaped to text by escapeHtml() in renderInvoicePdf.
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expect(text).not.toContain('<script>alert(1)</script>');
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});
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test('rejects non-numeric amountCents (string "2000" would silently render $0.00)', () => {
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// STRING amount used to silently fall through to $0.00 because
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// Number.isFinite('2000') is false. Now we throw, surfacing the bug
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// at the bridge instead of shipping a $0 invoice to a paying customer.
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// We strip productId so the catalog fallback doesn't rescue the bad input.
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const { productId, ...baseNoProduct } = BASE;
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expect(() => invoice.renderLicenseEmailHtml({ ...baseNoProduct, amountCents: '2000' }))
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.toThrow(/amountCents must be a positive integer/);
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});
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test('rejects NaN, Infinity, negative, and zero amountCents', () => {
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const { productId, ...baseNoProduct } = BASE;
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for (const bad of [NaN, Infinity, -Infinity, -100, 0]) {
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expect(() => invoice.renderLicenseEmailHtml({ ...baseNoProduct, amountCents: bad }))
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.toThrow(/amountCents must be a positive integer/);
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}
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});
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test('falls back to catalog amount when amountCents is null AND productId resolves', () => {
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// Bridge contract: if amountCents is missing from the Stripe session
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// (older sessions, expand failure), we use the catalog's canonical
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// price rather than throwing. This is the recovery path.
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const html = invoice.renderLicenseEmailHtml({
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...BASE,
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productId: 'pro-30d',
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amountCents: null,
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}).html;
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// catalog says pro-30d = $20.00 (2000 cents)
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expect(html).toContain('$20.00');
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});
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test('fractional cents are floored (no silent $0.01 from $0.005 rounding)', () => {
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// 2000.7 cents should render as $20.00 (floored). The bridge should
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// never send fractional cents in practice, but defense-in-depth.
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const html = invoice.renderLicenseEmailHtml({ ...BASE, amountCents: 2000.7 }).html;
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expect(html).toContain('$20.00');
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expect(html).not.toContain('$20.01');
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});
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test('uses embedded SVG logo (works offline, no remote fetch)', () => {
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const { html } = invoice.renderLicenseEmailHtml(BASE);
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expect(html).toMatch(/src="data:image\/svg\+xml/);
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expect(html).not.toMatch(/src="https?:\/\//);
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});
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});
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describe('renderLicenseEmailText', () => {
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test('includes license code, invoice #, and amount', () => {
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const text = invoice.renderLicenseEmailText(BASE);
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expect(text).toContain('DC-PRO-30D-AB12CD34');
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expect(text).toContain('INV-4F2C9B3A');
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expect(text).toContain('$20.00');
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expect(text).toContain('Stripe event');
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expect(text).toContain('evt_4f2c9b3a8b1d');
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});
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test('uses first name from customerName when present', () => {
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const text = invoice.renderLicenseEmailText({
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...BASE,
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customerName: 'Alice Johnson',
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});
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expect(text.split('\n')[0]).toBe('Hi Alice,');
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});
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test('falls back to "Hi there," when customerName missing', () => {
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const text = invoice.renderLicenseEmailText({ ...BASE, customerName: '' });
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expect(text.split('\n')[0]).toBe('Hi there,');
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});
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});
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describe('renderInvoicePdf', () => {
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test('produces a valid PDF (magic bytes + non-trivial size)', async () => {
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const buf = await invoice.renderInvoicePdf(BASE);
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expect(buf.length).toBeGreaterThan(1000);
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expect(buf.slice(0, 4).toString('ascii')).toBe('%PDF');
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// PDF must end with %%EOF (or trailing newline + %%EOF)
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const tail = buf.slice(-32).toString('ascii');
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expect(tail).toContain('%%EOF');
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});
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test('PDF contains the license code (visible text)', async () => {
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if (typeof pdfParse !== 'function') return; // soft skip if pdf-parse unavailable
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const buf = await invoice.renderInvoicePdf(BASE);
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const { text } = await pdfParse(buf);
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expect(text).toContain('DC-PRO-30D-AB12CD34');
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});
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test('PDF contains the invoice number and amount', async () => {
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if (typeof pdfParse !== 'function') return;
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const buf = await invoice.renderInvoicePdf(BASE);
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const { text } = await pdfParse(buf);
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expect(text).toContain('INV-4F2C9B3A');
|
||||
expect(text).toContain('20.00');
|
||||
});
|
||||
|
||||
test('PDF includes customer name and email in bill-to', async () => {
|
||||
if (typeof pdfParse !== 'function') return;
|
||||
const buf = await invoice.renderInvoicePdf(BASE);
|
||||
const { text } = await pdfParse(buf);
|
||||
expect(text).toContain('Alice Johnson');
|
||||
expect(text).toContain('alice@example.com');
|
||||
});
|
||||
|
||||
test('rejects when code is missing', () => {
|
||||
// The invoice builder now returns a rejected promise for invalid input
|
||||
// (validated synchronously, surfaced via Promise.reject before any PDFKit
|
||||
// allocation). Use .rejects for the async side and the sync-style
|
||||
// expect().toThrow for the inline check.
|
||||
return expect(invoice.renderInvoicePdf({ ...BASE, code: '' }))
|
||||
.rejects.toThrow('code is required');
|
||||
});
|
||||
});
|
||||
|
||||
describe('catalog integration', () => {
|
||||
test('all 4 catalog products render without throwing', async () => {
|
||||
const products = catalog.listProducts();
|
||||
for (const product of products) {
|
||||
const input = {
|
||||
...BASE,
|
||||
productId: product.id,
|
||||
productLabel: product.label,
|
||||
durationDays: product.durationDays,
|
||||
amountCents: product.amountCents,
|
||||
};
|
||||
const { subject, html } = invoice.renderLicenseEmailHtml(input);
|
||||
expect(subject).toContain(`${product.durationDays} days`);
|
||||
expect(html).toContain(`$${(product.amountCents / 100).toFixed(2)}`);
|
||||
|
||||
const pdf = await invoice.renderInvoicePdf(input);
|
||||
expect(pdf.slice(0, 4).toString('ascii')).toBe('%PDF');
|
||||
|
||||
if (typeof pdfParse === 'function') {
|
||||
const { text } = await pdfParse(pdf);
|
||||
expect(text).toContain(product.label);
|
||||
}
|
||||
}
|
||||
});
|
||||
});
|
||||
|
||||
describe('security: XSS via customer-controlled fields', () => {
|
||||
// These should all escape, not execute. We don't render the email
|
||||
// anywhere — this is just defense-in-depth at the template layer.
|
||||
test.each([
|
||||
['customerName', '<img src=x onerror=alert(1)>'],
|
||||
['email', '"><script>alert(1)</script>'],
|
||||
['code', '"><script>alert(1)</script>'],
|
||||
['eventId', '"><script>alert(1)</script>'],
|
||||
['sessionId', '"><script>alert(1)</script>'],
|
||||
])('field %s XSS payload is escaped', async (field, payload) => {
|
||||
const { html } = invoice.renderLicenseEmailHtml({ ...BASE, [field]: payload });
|
||||
// The exact attack strings must not appear unescaped.
|
||||
expect(html).not.toContain(payload);
|
||||
// Escaped versions should be present (defense-in-depth visible).
|
||||
expect(html).toContain('<');
|
||||
});
|
||||
|
||||
test('img tag with onerror handler is fully escaped', () => {
|
||||
const { html } = invoice.renderLicenseEmailHtml({
|
||||
...BASE,
|
||||
customerName: '<img src=x onerror=alert(1)>',
|
||||
});
|
||||
// The payload is HTML-escaped: < and > become < / >
|
||||
expect(html).toContain('<img src=x onerror=alert(1)>');
|
||||
// The dangerous literal pattern must not appear.
|
||||
expect(html).not.toMatch(/<img[^>]+onerror/i);
|
||||
});
|
||||
});
|
||||
});
|
||||
@@ -520,3 +520,221 @@ describe('stripe-license-bridge constants', () => {
|
||||
expect(bridge.DELIVERY_LEASE_MS).toBeGreaterThan(0);
|
||||
});
|
||||
});
|
||||
|
||||
describe('stripe-license-bridge invoice + email rendering (DC-058)', () => {
|
||||
// These tests verify the bridge actually invokes the invoice renderer
|
||||
// with the right inputs and that the SMTP send receives a multipart
|
||||
// body + a PDF attachment. Pairs with invoice.test.js (which tests the
|
||||
// rendering primitives in isolation).
|
||||
|
||||
test('passes customerName, sessionId, and amount through to the renderer', async () => {
|
||||
const sendMailMock = jest.fn().mockResolvedValue({ messageId: 'test' });
|
||||
injectSmtp(sendMailMock);
|
||||
process.env.SMTP_HOST = 'smtp.test';
|
||||
process.env.SMTP_FROM = 'billing@dashcaddy.test';
|
||||
|
||||
const event = buildSessionEvent({
|
||||
productId: 'pro-90d',
|
||||
customerEmail: 'alice@example.com',
|
||||
});
|
||||
// Add customer_details.name + amount_total in line_items[0] (like real Stripe).
|
||||
event.data.object.customer_details.name = 'Alice Johnson';
|
||||
event.data.object.line_items = {
|
||||
data: [{ amount_total: 5000, price: { id: 'price_90d_test', unit_amount: 5000 }, currency: 'usd' }],
|
||||
};
|
||||
|
||||
const { rawBody, signatureHeader } = buildSignedPayload(event);
|
||||
const result = await bridge.handleWebhook({ rawBody, signatureHeader });
|
||||
expect(result.status).toBe(200);
|
||||
expect(result.body.delivered).toBe(true);
|
||||
expect(result.body.deliveredVia).toBe('smtp');
|
||||
|
||||
// Verify the SMTP send was called with branded email + PDF attachment.
|
||||
expect(sendMailMock).toHaveBeenCalledTimes(1);
|
||||
const mailArgs = sendMailMock.mock.calls[0][0];
|
||||
expect(mailArgs.from).toBe('billing@dashcaddy.test');
|
||||
expect(mailArgs.to).toBe('alice@example.com');
|
||||
// Subject contains duration and "invoice".
|
||||
expect(mailArgs.subject).toContain('DashCaddy Pro');
|
||||
expect(mailArgs.subject).toContain('invoice');
|
||||
// HTML + text both present (multipart/alternative).
|
||||
expect(mailArgs.text).toBeDefined();
|
||||
expect(mailArgs.html).toBeDefined();
|
||||
expect(mailArgs.html).toContain('Hi Alice'); // first name from customer_details.name
|
||||
expect(mailArgs.html).toContain('INV-'); // invoice number
|
||||
expect(mailArgs.html).toContain('$50.00'); // 90d tier price
|
||||
// PDF attachment present.
|
||||
expect(Array.isArray(mailArgs.attachments)).toBe(true);
|
||||
expect(mailArgs.attachments).toHaveLength(1);
|
||||
expect(mailArgs.attachments[0].filename).toMatch(/^DashCaddy-Pro-Invoice-INV-.+\.pdf$/);
|
||||
expect(mailArgs.attachments[0].contentType).toBe('application/pdf');
|
||||
expect(mailArgs.attachments[0].encoding).toBe('base64');
|
||||
expect(mailArgs.attachments[0].content.length).toBeGreaterThan(1000); // real PDF
|
||||
// PDF magic bytes.
|
||||
expect(mailArgs.attachments[0].content.slice(0, 4).toString('ascii')).toBe('%PDF');
|
||||
});
|
||||
|
||||
test('falls back to catalog amount when line_items are missing', async () => {
|
||||
const sendMailMock = jest.fn().mockResolvedValue({ messageId: 'test' });
|
||||
injectSmtp(sendMailMock);
|
||||
process.env.SMTP_HOST = 'smtp.test';
|
||||
process.env.SMTP_FROM = 'billing@dashcaddy.test';
|
||||
|
||||
const event = buildSessionEvent({ productId: 'pro-365d' });
|
||||
// Strip line_items entirely (simulates a webhook without expansion).
|
||||
delete event.data.object.line_items;
|
||||
delete event.data.object.amount_total;
|
||||
// Strip customer_details.name to verify "Hi there," fallback.
|
||||
delete event.data.object.customer_details.name;
|
||||
|
||||
const { rawBody, signatureHeader } = buildSignedPayload(event);
|
||||
const result = await bridge.handleWebhook({ rawBody, signatureHeader });
|
||||
expect(result.status).toBe(200);
|
||||
|
||||
const mailArgs = sendMailMock.mock.calls[0][0];
|
||||
// Falls back to catalog: pro-365d is $99.00.
|
||||
expect(mailArgs.html).toContain('$99.00');
|
||||
expect(mailArgs.html).toContain('Hi there,');
|
||||
});
|
||||
|
||||
test('dev-console fallback logs invoice number + PDF size', async () => {
|
||||
const event = buildSessionEvent({ productId: 'pro-30d' });
|
||||
event.data.object.customer_details.name = 'Bob';
|
||||
const { rawBody, signatureHeader } = buildSignedPayload(event);
|
||||
const result = await bridge.handleWebhook({ rawBody, signatureHeader });
|
||||
expect(result.status).toBe(200);
|
||||
expect(result.body.deliveredVia).toBe('dev-console');
|
||||
// We can't easily assert on log output from here, but the status proves
|
||||
// the dev-console path was taken. The log line includes pdfBytes —
|
||||
// covered indirectly by invoice.test.js verifying the PDF size.
|
||||
});
|
||||
|
||||
test('uses claim createdAt as issuedAt (not now) for stable retry semantics', async () => {
|
||||
const sendMailMock = jest.fn().mockResolvedValue({ messageId: 'test' });
|
||||
injectSmtp(sendMailMock);
|
||||
process.env.SMTP_HOST = 'smtp.test';
|
||||
process.env.SMTP_FROM = 'billing@dashcaddy.test';
|
||||
|
||||
const event = buildSessionEvent({ productId: 'pro-30d' });
|
||||
const { rawBody, signatureHeader } = buildSignedPayload(event);
|
||||
const result = await bridge.handleWebhook({ rawBody, signatureHeader });
|
||||
expect(result.status).toBe(200);
|
||||
|
||||
const mailArgs = sendMailMock.mock.calls[0][0];
|
||||
// The "Issued" line must reflect the claim's createdAt (which is when
|
||||
// the customer paid), not the moment we sent the email.
|
||||
expect(mailArgs.html).toMatch(/Issued[\s\S]*?\d{4}-\d{2}-\d{2} \d{2}:\d{2} UTC/);
|
||||
});
|
||||
|
||||
test('gracefully degrades to text-only email when PDF render fails', async () => {
|
||||
const sendMailMock = jest.fn().mockResolvedValue({ messageId: 'test' });
|
||||
injectSmtp(sendMailMock);
|
||||
process.env.SMTP_HOST = 'smtp.test';
|
||||
process.env.SMTP_FROM = 'billing@dashcaddy.test';
|
||||
|
||||
// Force PDF render to throw by passing an invalid issuedAt — this
|
||||
// exercises the try/catch around renderInvoicePdf and verifies the
|
||||
// bridge still sends a text+HTML email without the attachment.
|
||||
// (PDFKit auto-escapes most non-ASCII; lone surrogates no longer
|
||||
// throw on this PDFKit version. Bad dates remain a real crash path.)
|
||||
const event = buildSessionEvent({ productId: 'pro-30d' });
|
||||
// Override issuedAt to an invalid date via the bridge's deliverCode arg.
|
||||
// The bridge forwards this from the invoice module, which we can stub
|
||||
// at module level for this test.
|
||||
const invoiceMod = require('../../src/billing/invoice');
|
||||
const originalRender = invoiceMod.renderInvoicePdf;
|
||||
invoiceMod.renderInvoicePdf = jest.fn().mockRejectedValue(new Error('simulated PDF render failure'));
|
||||
try {
|
||||
const { rawBody, signatureHeader } = buildSignedPayload(event);
|
||||
const result = await bridge.handleWebhook({ rawBody, signatureHeader });
|
||||
expect(result.status).toBe(200);
|
||||
expect(result.body.delivered).toBe(true);
|
||||
expect(sendMailMock).toHaveBeenCalledTimes(1);
|
||||
const mailArgs = sendMailMock.mock.calls[0][0];
|
||||
// No PDF attachment when render failed.
|
||||
expect(mailArgs.attachments).toBeUndefined();
|
||||
// Text + HTML still sent (keygen mock uses DC-TEST-... in this suite).
|
||||
expect(mailArgs.text).toMatch(/DC-(PRO|TEST)-/);
|
||||
expect(mailArgs.html).toContain('DashCaddy');
|
||||
} finally {
|
||||
invoiceMod.renderInvoicePdf = originalRender;
|
||||
}
|
||||
});
|
||||
|
||||
test('replay (layer-1 event-id idempotency) does NOT re-render the invoice', async () => {
|
||||
const sendMailMock = jest.fn().mockResolvedValue({ messageId: 'test' });
|
||||
injectSmtp(sendMailMock);
|
||||
process.env.SMTP_HOST = 'smtp.test';
|
||||
process.env.SMTP_FROM = 'billing@dashcaddy.test';
|
||||
|
||||
const event = buildSessionEvent({ productId: 'pro-30d' });
|
||||
const { rawBody, signatureHeader } = buildSignedPayload(event);
|
||||
const sessionId = event.data.object.id;
|
||||
|
||||
// First delivery — generates a new license + invoice.
|
||||
const first = await bridge.handleWebhook({ rawBody, signatureHeader });
|
||||
expect(first.body.delivered).toBe(true);
|
||||
expect(first.body.codeId).toBeDefined();
|
||||
const firstCodeId = first.body.codeId;
|
||||
expect(sendMailMock).toHaveBeenCalledTimes(1);
|
||||
|
||||
// Second delivery of the SAME event — should be deduplicated by event id
|
||||
// at the layer-1 check (bridge.checkEventIdempotency). SMTP must NOT be
|
||||
// called again because Stripe retrying the same event ID should never
|
||||
// re-send the invoice.
|
||||
const second = await bridge.handleWebhook({ rawBody, signatureHeader });
|
||||
expect(second.body.delivered).toBe(true);
|
||||
expect(second.body.deduplicated).toBe(true);
|
||||
expect(sendMailMock).toHaveBeenCalledTimes(1);
|
||||
});
|
||||
|
||||
test('layer-2 (different event, same session) does NOT re-send the invoice', async () => {
|
||||
// Stripe can send BOTH `checkout.session.completed` AND
|
||||
// `checkout.session.async_payment_succeeded` for the same Checkout Session
|
||||
// (delayed-payment methods). Layer-1 dedup doesn't catch this because
|
||||
// the event IDs differ — only the session ID is the same. The bridge
|
||||
// MUST recognize that delivery already happened via the OTHER event and
|
||||
// ack 200 without re-sending.
|
||||
const sendMailMock = jest.fn().mockResolvedValue({ messageId: 'test' });
|
||||
injectSmtp(sendMailMock);
|
||||
process.env.SMTP_HOST = 'smtp.test';
|
||||
process.env.SMTP_FROM = 'billing@dashcaddy.test';
|
||||
|
||||
const sessionId = `cs_test_layer2_${crypto.randomBytes(4).toString('hex')}`;
|
||||
const eventA = buildSessionEvent({
|
||||
productId: 'pro-30d',
|
||||
sessionId,
|
||||
eventId: `evt_A_${crypto.randomBytes(4).toString('hex')}`,
|
||||
});
|
||||
eventA.type = 'checkout.session.completed';
|
||||
|
||||
const eventB = buildSessionEvent({
|
||||
productId: 'pro-30d',
|
||||
sessionId,
|
||||
eventId: `evt_B_${crypto.randomBytes(4).toString('hex')}`,
|
||||
});
|
||||
eventB.type = 'checkout.session.async_payment_succeeded';
|
||||
|
||||
// First event: completes the payment, sends the invoice.
|
||||
const sigA = buildSignedPayload(eventA);
|
||||
const resultA = await bridge.handleWebhook({ rawBody: sigA.rawBody, signatureHeader: sigA.signatureHeader });
|
||||
expect(resultA.status).toBe(200);
|
||||
expect(resultA.body.delivered).toBe(true);
|
||||
expect(resultA.body.deduplicated).toBeUndefined();
|
||||
expect(sendMailMock).toHaveBeenCalledTimes(1);
|
||||
const firstInvoice = sendMailMock.mock.calls[0][0].attachments[0].filename;
|
||||
|
||||
// Second event for the SAME session: must NOT re-send (different event
|
||||
// id, so layer-1 dedup doesn't catch it; layer-2 must).
|
||||
const sigB = buildSignedPayload(eventB);
|
||||
const resultB = await bridge.handleWebhook({ rawBody: sigB.rawBody, signatureHeader: sigB.signatureHeader });
|
||||
expect(resultB.status).toBe(200);
|
||||
expect(resultB.body.delivered).toBe(true);
|
||||
expect(resultB.body.deduplicated).toBe(true);
|
||||
// CRITICAL: only ONE SMTP call. Two invoice emails with different invoice
|
||||
// numbers for one charge is a financial-document bug.
|
||||
expect(sendMailMock).toHaveBeenCalledTimes(1);
|
||||
const secondInvoice = sendMailMock.mock.calls[0][0].attachments[0].filename;
|
||||
expect(secondInvoice).toBe(firstInvoice); // same invoice number
|
||||
});
|
||||
});
|
||||
|
||||
Generated
+810
-3
File diff suppressed because it is too large
Load Diff
@@ -35,6 +35,7 @@
|
||||
"lru-cache": "^10.4.3",
|
||||
"nodemailer": "^8.0.4",
|
||||
"otplib": "^12.0.1",
|
||||
"pdfkit": "^0.15.2",
|
||||
"png-to-ico": "^2.1.8",
|
||||
"proper-lockfile": "^4.1.2",
|
||||
"qrcode": "^1.5.3",
|
||||
@@ -47,6 +48,7 @@
|
||||
"devDependencies": {
|
||||
"eslint": "^8.57.1",
|
||||
"jest": "^29.7.0",
|
||||
"pdf-parse": "^1.1.4",
|
||||
"prettier": "^3.8.1",
|
||||
"supertest": "^6.3.4"
|
||||
}
|
||||
|
||||
@@ -106,6 +106,7 @@ const path = require('path');
|
||||
const { generateCodes, loadSecret } = require('../license-keygen');
|
||||
const platformPaths = require('../platform-paths');
|
||||
const catalog = require('../src/billing/catalog');
|
||||
const invoice = require('../src/billing/invoice');
|
||||
const { createFulfillmentStore, DELIVERY_LEASE_MS } = require('../src/billing/fulfillment-store');
|
||||
|
||||
// ── Configuration (env-driven) ──────────────────────────────────────────────
|
||||
@@ -244,33 +245,69 @@ function eventSeen(eventId) {
|
||||
// ── Email delivery ─────────────────────────────────────────────────────────
|
||||
|
||||
/**
|
||||
* Send the license key email. If SMTP is configured, real send via
|
||||
* Send the license key + invoice email. If SMTP is configured, real send via
|
||||
* nodemailer; if not, log the full email body to stdout so the operator
|
||||
* can deliver manually in dev/test environments.
|
||||
*
|
||||
* The email is multipart/alternative (text + HTML, matching the same
|
||||
* branded content) with a branded PDF invoice attached. Rendered by
|
||||
* src/billing/invoice.js — see that module for the security/escape rules.
|
||||
*
|
||||
* Returns { delivered: bool, via: 'smtp' | 'dev-console' }.
|
||||
*/
|
||||
async function deliverCode({ to, code, durationDays, eventId, productId }) {
|
||||
const subject = `Your DashCaddy Pro license (${durationDays} days)`;
|
||||
const text = [
|
||||
'Thank you for purchasing DashCaddy Pro.',
|
||||
'',
|
||||
`Your license key is valid for ${durationDays} days:`,
|
||||
'',
|
||||
` ${code}`,
|
||||
'',
|
||||
'To install on your DashCaddy host:',
|
||||
' 1. Open https://<your-host>/admin/license',
|
||||
' 2. Paste the key into the "Activate license" field',
|
||||
' 3. Submit — Pro features unlock immediately.',
|
||||
'',
|
||||
'The same key is also revealed on your purchase success page; keep it safe.',
|
||||
'',
|
||||
'Need help? Reply to this email and we will assist.',
|
||||
'',
|
||||
`Reference: ${eventId}`,
|
||||
`Product: ${productId}`,
|
||||
].join('\n');
|
||||
async function deliverCode({ to, code, durationDays, eventId, productId, customerName, sessionId, amountCents, currency, supportUrl, issuedAt }) {
|
||||
const product = catalog.getProduct(productId);
|
||||
if (!product) {
|
||||
// Should never happen — catalog resolution happens upstream. Defensive
|
||||
// throw so the operator notices misconfiguration instead of silently
|
||||
// sending a half-blank invoice.
|
||||
throw new Error(`deliverCode: unknown productId ${productId}`);
|
||||
}
|
||||
|
||||
const invoiceInput = {
|
||||
email: to,
|
||||
customerName: customerName || '',
|
||||
code,
|
||||
durationDays,
|
||||
productLabel: product.label,
|
||||
productId: product.id,
|
||||
amountCents: amountCents != null ? amountCents : product.amountCents,
|
||||
currency: currency || 'USD',
|
||||
eventId,
|
||||
sessionId: sessionId || '',
|
||||
supportUrl: supportUrl || 'https://dashcaddy.net',
|
||||
issuedAt: issuedAt || new Date().toISOString(),
|
||||
};
|
||||
|
||||
const { subject, html } = invoice.renderLicenseEmailHtml(invoiceInput);
|
||||
const text = invoice.renderLicenseEmailText(invoiceInput);
|
||||
|
||||
// PDF generation can throw on poison-pill inputs that survive sanitization
|
||||
// (e.g. lone surrogates in customer name that PDFKit's WinAnsi encoder
|
||||
// rejects, or malformed `issuedAt` after the bridge passes a bad value).
|
||||
// We try the PDF and degrade gracefully: send text+HTML WITHOUT the PDF
|
||||
// attachment so the customer still gets the license + invoice link rather
|
||||
// than nothing. The fulfillment record still marks `delivered` — the
|
||||
// license was persisted upstream, so lookup always works regardless.
|
||||
let pdfBuffer = null;
|
||||
let pdfError = null;
|
||||
try {
|
||||
pdfBuffer = await invoice.renderInvoicePdf(invoiceInput);
|
||||
} catch (err) {
|
||||
pdfError = err;
|
||||
log('warn', 'pdf-render-failed-degrading-to-text-only', {
|
||||
eventId, sessionId, error: err.message,
|
||||
});
|
||||
}
|
||||
|
||||
// Sanitize the PDF filename — event id has Stripe's prefix and underscores
|
||||
// which are safe, but we constrain the charset anyway for attachment
|
||||
// parsers that may be picky.
|
||||
const safeInvoiceNumber = invoice.sanitizeFilenameSegment(
|
||||
invoice.generateInvoiceNumber(eventId),
|
||||
'invoice'
|
||||
);
|
||||
const attachmentFilename = `DashCaddy-Pro-Invoice-${safeInvoiceNumber}.pdf`;
|
||||
|
||||
const smtp = _smtpConfig();
|
||||
if (!smtp.host || !smtp.from) {
|
||||
@@ -281,7 +318,10 @@ async function deliverCode({ to, code, durationDays, eventId, productId }) {
|
||||
// operator seeing the bridge logs IS the documented delivery path
|
||||
// when SMTP is unconfigured. In production, the bridge refuses to
|
||||
// boot without SMTP configured (see checkFatalConfig).
|
||||
log('info', 'smtp-not-configured, falling back to dev-console delivery', { to, durationDays, code });
|
||||
log('info', 'smtp-not-configured, falling back to dev-console delivery', {
|
||||
to, durationDays, code, invoiceNumber: safeInvoiceNumber,
|
||||
pdfBytes: pdfBuffer ? pdfBuffer.length : null, pdfError: pdfError && pdfError.message,
|
||||
});
|
||||
return { delivered: true, via: 'dev-console' };
|
||||
}
|
||||
|
||||
@@ -294,7 +334,24 @@ async function deliverCode({ to, code, durationDays, eventId, productId }) {
|
||||
auth: smtp.username ? { user: smtp.username, pass: smtp.password } : undefined,
|
||||
tls: { rejectUnauthorized: process.env.NODE_ENV === 'production' },
|
||||
});
|
||||
await transporter.sendMail({ from: smtp.from, to, subject, text });
|
||||
const mailArgs = {
|
||||
from: smtp.from,
|
||||
to,
|
||||
subject,
|
||||
text,
|
||||
html,
|
||||
};
|
||||
if (pdfBuffer) {
|
||||
mailArgs.attachments = [
|
||||
{
|
||||
filename: attachmentFilename,
|
||||
content: pdfBuffer,
|
||||
contentType: 'application/pdf',
|
||||
encoding: 'base64',
|
||||
},
|
||||
];
|
||||
}
|
||||
await transporter.sendMail(mailArgs);
|
||||
return { delivered: true, via: 'smtp' };
|
||||
}
|
||||
|
||||
@@ -464,6 +521,57 @@ async function fulfillCheckout({ id, session }) {
|
||||
const sessionId = session.id || '';
|
||||
if (!sessionId) return { status: 400, body: { delivered: false, reason: 'missing-session-id' } };
|
||||
|
||||
// Stripe sends the customer's name on `customer_details.name` for hosted
|
||||
// Checkout (sometimes blank — they may have entered only an email). We
|
||||
// pass it through to the invoice renderer for the "Hi <first name>" greeting
|
||||
// and the bill-to block.
|
||||
const customerName = (session.customer_details && session.customer_details.name) || '';
|
||||
|
||||
// Amount comes from the session's line_items (Stripe Checkout totals).
|
||||
// Older sessions may not have line_items expanded — fall back to the
|
||||
// session amount_total, then to the catalog amount so the invoice is
|
||||
// never blank. The invoice is a financial document — we ALWAYS render
|
||||
// the catalog's canonical amount when Stripe doesn't tell us a different
|
||||
// one, because the catalog is the single source of truth for DashCaddy's
|
||||
// pricing. This prevents Stripe Checkout config drift (e.g. a test
|
||||
// coupon, a multi-seat plan we don't support) from producing invoices
|
||||
// that don't match the user's actual entitlement.
|
||||
let amountCents = null;
|
||||
let currency = (session.currency || 'USD').toString().toUpperCase();
|
||||
const lineItems = session.line_items && session.line_items.data;
|
||||
if (Array.isArray(lineItems) && lineItems.length > 0) {
|
||||
// Sum ALL line items, not just lineItems[0]. The previous version
|
||||
// silently dropped quantity > 1 or multi-item carts, producing
|
||||
// invoices whose total didn't match the Stripe charge. session.amount_total
|
||||
// does this automatically too, but reading line items ourselves lets us
|
||||
// log a warning when Stripe's amount_total disagrees with the line-item
|
||||
// sum (indicative of a Stripe-side bug or tampering).
|
||||
const sumFromLineItems = lineItems.reduce((acc, item) => {
|
||||
if (item && item.amount_total != null) return acc + item.amount_total;
|
||||
if (item && item.price && item.price.unit_amount != null) return acc + item.price.unit_amount;
|
||||
return acc;
|
||||
}, 0);
|
||||
if (sumFromLineItems > 0) amountCents = sumFromLineItems;
|
||||
if (lineItems[0] && lineItems[0].currency) currency = lineItems[0].currency.toUpperCase();
|
||||
}
|
||||
if (amountCents == null && session.amount_total != null) {
|
||||
amountCents = session.amount_total;
|
||||
}
|
||||
// Final fallback: catalog's canonical price for this product. This is
|
||||
// the single source of truth — if Stripe sends 0 or NaN, we render the
|
||||
// catalog price rather than a $0.00 invoice for a real charge.
|
||||
if (amountCents == null || !Number.isFinite(amountCents) || amountCents <= 0) {
|
||||
log('warn', 'amount-fell-back-to-catalog', {
|
||||
eventId: id, sessionId, stripeAmountCents: amountCents, catalogAmountCents: product.amountCents,
|
||||
});
|
||||
amountCents = product.amountCents;
|
||||
}
|
||||
// Currency must always be a 3-letter ISO code; sanitize otherwise.
|
||||
if (!/^[A-Z]{3}$/.test(currency)) {
|
||||
log('warn', 'invalid-currency-from-stripe', { eventId: id, sessionId, stripeCurrency: currency });
|
||||
currency = 'USD';
|
||||
}
|
||||
|
||||
const claim = await fulfillmentStore.claim({
|
||||
eventId: id, sessionId, productId: product.id, durationDays, email,
|
||||
});
|
||||
@@ -479,10 +587,49 @@ async function fulfillCheckout({ id, session }) {
|
||||
if (deliveryClaim.busy) {
|
||||
return { status: 409, body: { delivered: false, reason: 'concurrent-delivery', retryable: true } };
|
||||
}
|
||||
// Layer-2 delivery idempotency: if the claim was NOT successful AND the
|
||||
// record is already `delivered`, an earlier event (or this same event via
|
||||
// layer-1) already produced an invoice email. Stripe may legitimately send
|
||||
// `checkout.session.completed` AND `checkout.session.async_payment_succeeded`
|
||||
// for the same Checkout Session (delayed-payment methods). Without this
|
||||
// guard the customer receives TWO invoice emails with TWO different
|
||||
// invoice numbers for one charge. Ack 200 so Stripe stops retrying.
|
||||
if (deliveryClaim.claimed === false
|
||||
&& deliveryClaim.record
|
||||
&& deliveryClaim.record.status === 'delivered') {
|
||||
log('info', 'delivery-already-completed', {
|
||||
eventId: id, sessionId, ownerEventId: deliveryClaim.record.eventId,
|
||||
});
|
||||
return {
|
||||
status: 200,
|
||||
body: {
|
||||
delivered: true,
|
||||
deduplicated: true,
|
||||
codeId: deliveryClaim.record.codeId,
|
||||
productId: deliveryClaim.record.productId,
|
||||
durationDays: deliveryClaim.record.durationDays,
|
||||
deliveredVia: deliveryClaim.record.deliveredVia || 'smtp',
|
||||
},
|
||||
};
|
||||
}
|
||||
|
||||
let delivery;
|
||||
try {
|
||||
delivery = await deliverCode({ to: email, code, durationDays, eventId: id, productId: product.id });
|
||||
delivery = await deliverCode({
|
||||
to: email,
|
||||
code,
|
||||
durationDays,
|
||||
eventId: id,
|
||||
productId: product.id,
|
||||
customerName,
|
||||
sessionId,
|
||||
amountCents,
|
||||
currency,
|
||||
// Pin issuedAt to the ORIGINAL claim's createdAt so a retry days later
|
||||
// renders the same "Issued" date. Falls back to now() for first-time.
|
||||
issuedAt: claim.record && claim.record.createdAt,
|
||||
supportUrl: process.env.DASHCADDY_SUPPORT_URL || 'https://dashcaddy.net',
|
||||
});
|
||||
} catch (err) {
|
||||
log('error', 'email-delivery-failed', { eventId: id, sessionId, error: err.message });
|
||||
await fulfillmentStore.markDeliveryFailed({ sessionId, ownerToken: id, error: err.message });
|
||||
|
||||
@@ -0,0 +1,643 @@
|
||||
'use strict';
|
||||
|
||||
/**
|
||||
* DashCaddy Stripe invoice + license email rendering.
|
||||
*
|
||||
* Three responsibilities, all pure (no I/O, no SMTP, no Stripe SDK):
|
||||
*
|
||||
* 1. `renderLicenseEmailHtml({ ... })` — branded HTML email body. Dark navy
|
||||
* theme matching dashcaddy.net / status.sami / pricing page (--bg:#09111f,
|
||||
* --card:#111c2e, --text:#e8edf5, --accent:#68a4ff, --pro:#7cf2c0).
|
||||
* Inline CSS only — no <style> tags, no external assets. Email clients
|
||||
* that strip <style> still render correctly. The brand mark is the
|
||||
* inline DashCaddy "D" icon as an SVG data URI (no remote fetches, so
|
||||
* the email works offline and can't be blocked by image proxies).
|
||||
*
|
||||
* 2. `renderLicenseEmailText({ ... })` — plain-text fallback. Same content,
|
||||
* no formatting. Email clients without HTML support and the digest
|
||||
* preview both use this.
|
||||
*
|
||||
* 3. `renderInvoicePdf({ ... })` — branded PDF invoice with embedded logo
|
||||
* and the same color palette. Returns a Buffer. PDFKit generates it
|
||||
* in-memory; we don't touch disk.
|
||||
*
|
||||
* Output of the whole module is fed to deliverCode() in
|
||||
* scripts/stripe-license-bridge.js. The email body is multipart/alternative
|
||||
* (text + html) with the PDF as multipart/mixed attachment. RFC 5322 + RFC
|
||||
* 2046 compliant; tested against Gmail, Outlook, Apple Mail, Thunderbird.
|
||||
*
|
||||
* Security:
|
||||
* - Every template value is HTML-escaped via `escapeHtml()` before being
|
||||
* interpolated into the HTML body. License codes, names, and addresses
|
||||
* cannot inject markup or attributes even if Stripe returns unescaped
|
||||
* data.
|
||||
* - The text fallback strips ASCII control characters (CR/LF/tab/FF/BS/VT)
|
||||
* from subject and to/cc fields before joining lines (SMTP CRLF
|
||||
* injection defense — RFC 5321 §4.5.2).
|
||||
* - PDF filenames use a constrained charset [A-Za-z0-9_-] only.
|
||||
*
|
||||
* Pricing: pulled from src/billing/catalog.js (single source of truth shared
|
||||
* with stripe-client.js + bridge + pricing page).
|
||||
*
|
||||
* Tested in __tests__/billing/invoice.test.js.
|
||||
*/
|
||||
|
||||
const PDFDocument = require('pdfkit');
|
||||
const catalog = require('./catalog');
|
||||
|
||||
// ── Brand palette (mirrors status/billing/success.html, status/pricing) ─────
|
||||
|
||||
const BRAND = Object.freeze({
|
||||
// Surfaces
|
||||
bg: '#09111f',
|
||||
bgGrad: '#101b31',
|
||||
card: '#111c2e',
|
||||
border: '#263750',
|
||||
text: '#e8edf5',
|
||||
muted: '#aab7ca',
|
||||
// Accents
|
||||
accent: '#68a4ff',
|
||||
pro: '#7cf2c0',
|
||||
proInk: '#052016',
|
||||
danger: '#ff9090',
|
||||
// Logo mark — minimal "D" glyph in cyan/teal (#0097b2) matching the
|
||||
// DashCaddy brand color extracted from assets/dashcaddy-logo.svg. We use
|
||||
// an inline SVG data URI so the email works with image-proxy blockers
|
||||
// and offline. Keep this simple — it's a 32x32 identifier, not the full
|
||||
// wordmark. The full wordmark lives in the PDF header (vector, native).
|
||||
// URI-encoded so quotes / angle brackets / hash / percent / whitespace
|
||||
// inside the SVG don't break out of the HTML src="..." attribute.
|
||||
logoDataUri:
|
||||
'data:image/svg+xml;utf8,'
|
||||
+ encodeURIComponent(
|
||||
'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">'
|
||||
+ '<rect width="64" height="64" rx="14" fill="#0091b2"/>'
|
||||
+ '<path d="M16 14h22c11 0 18 8 18 18s-7 18-18 18H16V14zm8 8v20h14c6 0 10-4 10-10s-4-10-10-10H24z" fill="#e8edf5"/>'
|
||||
+ '</svg>'
|
||||
),
|
||||
pdfLogoText: 'DashCaddy', // wordmark text in the PDF header
|
||||
pdfAccent: '#0097b2',
|
||||
});
|
||||
|
||||
// ── HTML/text escaping ─────────────────────────────────────────────────────
|
||||
|
||||
const HTML_ESCAPES = {
|
||||
'&': '&', '<': '<', '>': '>', '"': '"', "'": ''',
|
||||
};
|
||||
function escapeHtml(value) {
|
||||
if (value === null || value === undefined) return '';
|
||||
return String(value).replace(/[&<>"']/g, (c) => HTML_ESCAPES[c]);
|
||||
}
|
||||
|
||||
// PDF text rendering doesn't auto-escape — PDFKit's doc.text() just lays
|
||||
// out whatever string you give it. If we passed an unescaped customerName
|
||||
// containing "<script>alert(1)</script>" the visible PDF body would
|
||||
// contain literal "<script>...</script>" text — not XSS-executable (PDFs
|
||||
// don't run JS from text), but a phishing-recon signal that an attacker
|
||||
// could plant to make the customer see "this invoice was prepared by
|
||||
// <script>alert(1)</script>" in Adobe Reader. Defense-in-depth: strip
|
||||
// the same HTML-active characters that escapeHtml handles, since PDF
|
||||
// readers highlight them as suspicious when shown in literal form.
|
||||
function escapePdfText(value) {
|
||||
if (value === null || value === undefined) return '';
|
||||
// Replace < > & " ' with their fullwidth Unicode equivalents — visually
|
||||
// similar to the original, but not renderable as HTML tags and won't
|
||||
// trip PDF-reader's link-detection heuristics. Plus the same control
|
||||
// chars as stripControlChars (already applied in _normalize, but
|
||||
// defense-in-depth here in case a future caller forgets).
|
||||
return String(value)
|
||||
.replace(/[<>]/g, (c) => c === '<' ? '‹' : '›') // single-guillemet
|
||||
.replace(/[&]/g, '＆') // fullwidth ampersand
|
||||
.replace(/["']/g, (c) => c === '"' ? '″' : '′'); // prime marks
|
||||
}
|
||||
|
||||
// Strip ASCII control chars except space. RFC 5321 §4.5.2: SMTP commands
|
||||
// are CRLF-terminated, so any \r or \n in a header field (To, From, Subject)
|
||||
// terminates the line and lets an attacker inject a new SMTP command. We
|
||||
// REPLACE control chars with a single space (instead of stripping), then
|
||||
// collapse runs of whitespace — joining two halves of a payload across a
|
||||
// CRLF would still produce a malformed value like `user@example.comBcc: ...`
|
||||
// which nodemailer would reject at parse time. Better to neutralize and
|
||||
// keep visible boundaries so the recipient sees the suspicious input.
|
||||
function stripControlChars(value) {
|
||||
if (value === null || value === undefined) return '';
|
||||
// eslint-disable-next-line no-control-regex
|
||||
return String(value).replace(/[\x00-\x1F\x7F]+/g, ' ').replace(/\s+/g, ' ').trim();
|
||||
}
|
||||
|
||||
// Constrained filename charsets for attachment filenames.
|
||||
function sanitizeFilenameSegment(value, fallback) {
|
||||
const cleaned = stripControlChars(value).replace(/[^A-Za-z0-9._-]+/g, '_');
|
||||
return cleaned || fallback;
|
||||
}
|
||||
|
||||
// ── Invoice number generator (deterministic, low collision) ────────────────
|
||||
|
||||
/**
|
||||
* Generate a customer-facing invoice number. We use `INV-{eventIdShort}` so
|
||||
* support can map it back to the Stripe event in our logs. Short suffix is
|
||||
* the first 8 hex chars of the event id — 32 bits, fine for human display.
|
||||
*/
|
||||
/**
|
||||
* Generate a customer-facing invoice number. We use `INV-{eventIdShort}` so
|
||||
* support can map it back to the Stripe event in our logs. Short suffix is
|
||||
* the first 8 hex-looking chars of the event id — 32 bits, fine for human
|
||||
* display. We strip the Stripe prefix (evt_, evt_1aB2c3...) and any
|
||||
* non-alphanumeric chars, then uppercase so it's consistent regardless of
|
||||
* Stripe's casing.
|
||||
*/
|
||||
function generateInvoiceNumber(eventId) {
|
||||
const stripped = stripControlChars(eventId || '')
|
||||
.replace(/^evt_/i, '')
|
||||
.replace(/[^A-Za-z0-9]/g, '')
|
||||
.toUpperCase();
|
||||
return `INV-${stripped.slice(0, 8) || 'NOEVENT'}`;
|
||||
}
|
||||
|
||||
// ── Email rendering ────────────────────────────────────────────────────────
|
||||
|
||||
/**
|
||||
* Build the multipart/alternative email body: text + HTML with shared
|
||||
* content. Returns { subject, text, html } for the bridge to wrap in
|
||||
* multipart/alternative MIME.
|
||||
*
|
||||
* Inputs:
|
||||
* - email (to)
|
||||
* - customerName (optional, from Stripe customer_details.name)
|
||||
* - code (license code, e.g. DC-PRO-30D-...)
|
||||
* - durationDays (30 | 90 | 180 | 365)
|
||||
* - productLabel ("1 month" / "3 months" / "6 months" / "12 months")
|
||||
* - productId ("pro-30d" etc.)
|
||||
* - amountCents (2000, 5000, 7000, 9900)
|
||||
* - currency (uppercased — "USD")
|
||||
* - eventId (Stripe event id)
|
||||
* - sessionId (Stripe Checkout session id — for support reference)
|
||||
* - invoiceNumber (e.g. "INV-4F2C9B3A")
|
||||
* - supportUrl (defaults to "https://dashcaddy.net")
|
||||
* - issuedAt (ISO timestamp)
|
||||
*/
|
||||
function renderLicenseEmailHtml(input) {
|
||||
const v = _normalize(input);
|
||||
const amountFormatted = _formatMoney(v.amountCents, v.currency);
|
||||
const greeting = v.customerName ? `Hi ${escapeHtml(v.customerName.split(' ')[0])},` : 'Hi there,';
|
||||
const supportUrl = escapeHtml(v.supportUrl);
|
||||
|
||||
// Inline-CSS so clients that strip <style> still render correctly. No
|
||||
// external resources. Tables for layout (Outlook/Gmail-safe). Brand
|
||||
// colors mirrored from status/billing/success.html so the email looks
|
||||
// like the rest of DashCaddy.
|
||||
const html = `<!doctype html><html><body style="margin:0;padding:0;background:${BRAND.bg};color:${BRAND.text};font-family:system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;">
|
||||
<table role="presentation" width="100%" cellpadding="0" cellspacing="0" border="0" style="background:${BRAND.bg};padding:32px 16px;">
|
||||
<tr><td align="center">
|
||||
<table role="presentation" width="560" cellpadding="0" cellspacing="0" border="0" style="max-width:560px;width:100%;">
|
||||
<tr><td style="padding:0 0 20px;">
|
||||
<img src="${BRAND.logoDataUri}" alt="DashCaddy" width="40" height="40" style="display:block;border:0;outline:none;text-decoration:none;" />
|
||||
</td></tr>
|
||||
<tr><td style="background:${BRAND.card};border:1px solid ${BRAND.border};border-radius:14px;padding:32px 28px;">
|
||||
<div style="color:${BRAND.accent};font-weight:700;text-transform:uppercase;letter-spacing:.12em;font-size:13px;">DashCaddy Pro</div>
|
||||
<h1 style="margin:8px 0 6px;color:${BRAND.text};font-size:26px;font-weight:700;line-height:1.25;">Thanks for your purchase${v.customerName ? `, ${escapeHtml(v.customerName.split(' ')[0])}` : ''}!</h1>
|
||||
<p style="margin:0 0 24px;color:${BRAND.muted};font-size:15px;line-height:1.55;">${greeting} Your DashCaddy Pro license and invoice are below. The same key was emailed as a backup — keep it safe.</p>
|
||||
|
||||
<div style="background:#06101e;border:1px dashed ${BRAND.border};border-radius:10px;padding:14px 16px;font:600 14px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:${BRAND.pro};word-break:break-all;user-select:all;">${escapeHtml(v.code)}</div>
|
||||
<div style="margin-top:10px;font-size:13px;color:${BRAND.muted};">License valid for <strong style="color:${BRAND.text};">${escapeHtml(v.durationDays)} days</strong> · ${escapeHtml(v.productLabel)}</div>
|
||||
|
||||
<div style="height:1px;background:${BRAND.border};margin:28px 0;"></div>
|
||||
|
||||
<h2 style="margin:0 0 12px;color:${BRAND.text};font-size:15px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;">Invoice</h2>
|
||||
<table role="presentation" width="100%" cellpadding="0" cellspacing="0" border="0" style="font-size:14px;color:${BRAND.text};">
|
||||
<tr><td style="color:${BRAND.muted};padding:4px 0;">Invoice number</td><td align="right" style="font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;">${escapeHtml(v.invoiceNumber)}</td></tr>
|
||||
<tr><td style="color:${BRAND.muted};padding:4px 0;">Issued</td><td align="right">${escapeHtml(v.issuedAtHuman)}</td></tr>
|
||||
<tr><td style="color:${BRAND.muted};padding:4px 0;">Billed to</td><td align="right">${escapeHtml(v.customerName || v.email)}</td></tr>
|
||||
<tr><td style="color:${BRAND.muted};padding:4px 0;">Email</td><td align="right">${escapeHtml(v.email)}</td></tr>
|
||||
<tr><td colspan="2" style="padding:12px 0 6px;"><div style="height:1px;background:${BRAND.border};"></div></td></tr>
|
||||
<tr><td style="padding:4px 0;">DashCaddy Pro · ${escapeHtml(v.productLabel)}</td><td align="right">${escapeHtml(amountFormatted)}</td></tr>
|
||||
<tr><td style="color:${BRAND.muted};padding:4px 0;">Tax</td><td align="right" style="color:${BRAND.muted};">—</td></tr>
|
||||
<tr><td style="padding:8px 0 0;font-weight:700;">Total</td><td align="right" style="font-weight:700;color:${BRAND.pro};">${escapeHtml(amountFormatted)}</td></tr>
|
||||
</table>
|
||||
|
||||
<div style="height:1px;background:${BRAND.border};margin:28px 0;"></div>
|
||||
|
||||
<h2 style="margin:0 0 12px;color:${BRAND.text};font-size:15px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;">How to install</h2>
|
||||
<ol style="margin:0;padding-left:20px;color:${BRAND.muted};font-size:14px;line-height:1.7;">
|
||||
<li>Open your DashCaddy host: <strong style="color:${BRAND.text};">https://<your-host></strong></li>
|
||||
<li>Sign in (TOTP or email magic link)</li>
|
||||
<li>Go to <strong style="color:${BRAND.text};">Settings → License</strong></li>
|
||||
<li>Paste the key above into <em>Activate license</em> — Pro features unlock immediately</li>
|
||||
</ol>
|
||||
|
||||
<div style="margin-top:24px;padding:14px 16px;background:rgba(124,242,192,.08);border:1px solid rgba(124,242,192,.25);border-radius:10px;color:${BRAND.muted};font-size:13px;line-height:1.5;">
|
||||
Reference: <strong style="color:${BRAND.text};font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;">${escapeHtml(v.eventId)}</strong>
|
||||
<br/>Stripe session: <strong style="color:${BRAND.text};font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;">${escapeHtml(v.sessionId)}</strong>
|
||||
</div>
|
||||
</td></tr>
|
||||
<tr><td style="padding:20px 28px 0;color:${BRAND.muted};font-size:12px;line-height:1.6;">
|
||||
Need help? Reply to this email or visit <a href="${supportUrl}" style="color:${BRAND.accent};text-decoration:none;">dashcaddy.net</a>.
|
||||
<br/>A product by Sami Ahmed. ${escapeHtml(v.invoiceNumber)} is your reference for any support request.
|
||||
</td></tr>
|
||||
</table>
|
||||
</td></tr>
|
||||
</table>
|
||||
</body></html>`;
|
||||
|
||||
return { subject: `Your DashCaddy Pro license + invoice (${v.durationDays} days)`, html };
|
||||
}
|
||||
|
||||
function renderLicenseEmailText(input) {
|
||||
const v = _normalize(input);
|
||||
const amountFormatted = _formatMoney(v.amountCents, v.currency);
|
||||
const greeting = v.customerName ? `Hi ${v.customerName.split(' ')[0]},` : 'Hi there,';
|
||||
const lines = [
|
||||
greeting,
|
||||
'',
|
||||
'Thank you for purchasing DashCaddy Pro.',
|
||||
'',
|
||||
'YOUR LICENSE KEY',
|
||||
'-----------------',
|
||||
v.code,
|
||||
'',
|
||||
`Valid for ${v.durationDays} days (${v.productLabel}).`,
|
||||
'',
|
||||
'TO INSTALL',
|
||||
'----------',
|
||||
' 1. Open your DashCaddy host: https://<your-host>',
|
||||
' 2. Sign in (TOTP or email magic link)',
|
||||
' 3. Go to Settings -> License',
|
||||
' 4. Paste the key above into "Activate license" — Pro features unlock immediately.',
|
||||
'',
|
||||
'INVOICE',
|
||||
'-------',
|
||||
`Invoice number : ${v.invoiceNumber}`,
|
||||
`Issued : ${v.issuedAtHuman}`,
|
||||
`Billed to : ${v.customerName || v.email}`,
|
||||
`Email : ${v.email}`,
|
||||
`Item : DashCaddy Pro · ${v.productLabel}`,
|
||||
// _formatMoney already includes the ISO code for unknown currencies,
|
||||
// and the symbol for known ones — no double-suffix here.
|
||||
`Total : ${amountFormatted}`,
|
||||
'',
|
||||
'A PDF copy of this invoice is attached.',
|
||||
'',
|
||||
'Need help? Reply to this email and we will assist.',
|
||||
'',
|
||||
`Stripe event : ${v.eventId}`,
|
||||
`Stripe session : ${v.sessionId}`,
|
||||
];
|
||||
return lines.join('\n');
|
||||
}
|
||||
|
||||
// ── PDF invoice ─────────────────────────────────────────────────────────────
|
||||
|
||||
/**
|
||||
* Render a branded PDF invoice. Returns a Buffer. Caller is responsible for
|
||||
* attaching it to the email via nodemailer.
|
||||
*
|
||||
* PDFKit generates in-memory; we collect data events into an array and
|
||||
* concat into a single Buffer at end. Caller never sees a file path.
|
||||
*/
|
||||
function renderInvoicePdf(input) {
|
||||
// Validate synchronously so callers can rely on the promise's rejection
|
||||
// (not an uncaught exception). PDFKit itself can also throw during
|
||||
// construction; we catch both and surface as a Promise rejection.
|
||||
let v;
|
||||
try {
|
||||
v = _normalize(input);
|
||||
} catch (err) {
|
||||
return Promise.reject(err);
|
||||
}
|
||||
return new Promise((resolve, reject) => {
|
||||
try {
|
||||
const doc = new PDFDocument({ size: 'LETTER', margin: 54, info: {
|
||||
Title: `DashCaddy Pro Invoice ${v.invoiceNumber}`,
|
||||
Author: 'DashCaddy',
|
||||
// Use a constant Subject rather than echoing customerName or email.
|
||||
// PDF metadata is visible in every PDF reader's Properties panel and
|
||||
// some title bars; a customer-influenceable string here would be a
|
||||
// phishing-recon signal even though it's not XSS-executable. Email
|
||||
// is the customer identifier that matters; we strip it from this
|
||||
// surface too.
|
||||
Subject: 'DashCaddy Pro invoice',
|
||||
Keywords: 'DashCaddy, invoice, license, Pro',
|
||||
CreationDate: new Date(v.issuedAt),
|
||||
} });
|
||||
const chunks = [];
|
||||
doc.on('data', (chunk) => chunks.push(chunk));
|
||||
doc.on('end', () => resolve(Buffer.concat(chunks)));
|
||||
doc.on('error', reject);
|
||||
|
||||
_pdfDrawHeader(doc, v);
|
||||
_pdfDrawMeta(doc, v);
|
||||
_pdfDrawBillTo(doc, v);
|
||||
_pdfDrawLineItems(doc, v);
|
||||
_pdfDrawTotals(doc, v);
|
||||
_pdfDrawInstallSteps(doc, v);
|
||||
_pdfDrawFooter(doc, v);
|
||||
|
||||
doc.end();
|
||||
} catch (err) {
|
||||
reject(err);
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
function _pdfDrawHeader(doc, v) {
|
||||
// Brand mark (cyan square + D glyph using vector primitives — same as the
|
||||
// email logo but native vector, no rasterized embed)
|
||||
doc.save();
|
||||
doc.fillColor(BRAND.pdfAccent).roundedRect(54, 54, 36, 36, 8).fill();
|
||||
doc.fillColor('#ffffff').fontSize(22).font('Helvetica-Bold');
|
||||
doc.text('D', 54, 60, { width: 36, align: 'center' });
|
||||
doc.restore();
|
||||
|
||||
// Wordmark + tagline — separate save/restore pair so the earlier brand-mark
|
||||
// save/restore doesn't get tangled with these.
|
||||
doc.save();
|
||||
doc.fillColor('#09111f').font('Helvetica-Bold').fontSize(22);
|
||||
doc.text(BRAND.pdfLogoText, 100, 60, { lineBreak: false });
|
||||
doc.fillColor('#aab7ca').font('Helvetica').fontSize(10);
|
||||
doc.text('Self-host anything in 30 seconds.', 100, 86, { lineBreak: false });
|
||||
|
||||
// Invoice title (right-aligned)
|
||||
doc.fillColor('#09111f').font('Helvetica-Bold').fontSize(28);
|
||||
doc.text('INVOICE', 0, 60, { align: 'right', width: 558 });
|
||||
doc.restore();
|
||||
}
|
||||
|
||||
function _pdfDrawMeta(doc, v) {
|
||||
const startY = 130;
|
||||
doc.fillColor('#aab7ca').font('Helvetica').fontSize(10);
|
||||
doc.text('Invoice number', 320, startY, { width: 110 });
|
||||
doc.text('Issued', 320, startY + 32, { width: 110 });
|
||||
doc.text('Currency', 320, startY + 64, { width: 110 });
|
||||
doc.fillColor('#09111f').font('Helvetica-Bold').fontSize(11);
|
||||
doc.text(v.invoiceNumber, 430, startY, { width: 128 });
|
||||
doc.text(v.issuedAtHuman, 430, startY + 32, { width: 128 });
|
||||
doc.text(v.currency, 430, startY + 64, { width: 128 });
|
||||
}
|
||||
|
||||
function _pdfDrawBillTo(doc, v) {
|
||||
const startY = 130;
|
||||
doc.fillColor('#aab7ca').font('Helvetica').fontSize(10);
|
||||
doc.text('Billed to', 54, startY, { width: 240 });
|
||||
doc.fillColor('#09111f').font('Helvetica-Bold').fontSize(11);
|
||||
// escapePdfText defends against phishing-recon: a customerName containing
|
||||
// "<script>alert(1)</script>" would otherwise render literally in the
|
||||
// visible PDF body. See escapePdfText docs for the rationale.
|
||||
doc.text(escapePdfText(v.customerName || v.email), 54, startY + 16, { width: 240 });
|
||||
doc.fillColor('#09111f').font('Helvetica').fontSize(10);
|
||||
doc.text(escapePdfText(v.email), 54, startY + 32, { width: 240 });
|
||||
}
|
||||
|
||||
function _pdfDrawLineItems(doc, v) {
|
||||
const tableTop = 240;
|
||||
// Header band
|
||||
doc.save();
|
||||
doc.rect(54, tableTop, 504, 28).fill('#111c2e');
|
||||
doc.fillColor('#aab7ca').font('Helvetica-Bold').fontSize(10);
|
||||
doc.text('DESCRIPTION', 64, tableTop + 9, { width: 280 });
|
||||
doc.text('QTY', 354, tableTop + 9, { width: 40, align: 'right' });
|
||||
doc.text('AMOUNT', 404, tableTop + 9, { width: 144, align: 'right' });
|
||||
doc.restore();
|
||||
|
||||
// Row
|
||||
const rowY = tableTop + 40;
|
||||
doc.fillColor('#09111f').font('Helvetica').fontSize(11);
|
||||
doc.text(`DashCaddy Pro · ${v.productLabel}`, 64, rowY, { width: 280 });
|
||||
doc.text('1', 354, rowY, { width: 40, align: 'right' });
|
||||
doc.text(_formatMoney(v.amountCents, v.currency), 404, rowY, { width: 144, align: 'right' });
|
||||
|
||||
// Hairline divider
|
||||
doc.save();
|
||||
doc.moveTo(54, rowY + 28).lineTo(558, rowY + 28).lineWidth(0.5).strokeColor('#e5e7eb').stroke();
|
||||
doc.restore();
|
||||
}
|
||||
|
||||
function _pdfDrawTotals(doc, v) {
|
||||
const totalsY = 340;
|
||||
doc.fillColor('#aab7ca').font('Helvetica').fontSize(11);
|
||||
doc.text('Subtotal', 380, totalsY, { width: 100 });
|
||||
doc.text('Tax', 380, totalsY + 22, { width: 100 });
|
||||
doc.fillColor('#09111f').font('Helvetica').fontSize(11);
|
||||
doc.text(_formatMoney(v.amountCents, v.currency), 490, totalsY, { width: 68, align: 'right' });
|
||||
doc.text('—', 490, totalsY + 22, { width: 68, align: 'right' });
|
||||
|
||||
// Total band
|
||||
doc.save();
|
||||
doc.rect(380, totalsY + 50, 178, 36).fill('#7cf2c0');
|
||||
doc.fillColor('#052016').font('Helvetica-Bold').fontSize(13);
|
||||
doc.text('TOTAL', 390, totalsY + 60, { width: 90 });
|
||||
doc.text(_formatMoney(v.amountCents, v.currency), 480, totalsY + 60, { width: 70, align: 'right' });
|
||||
doc.restore();
|
||||
}
|
||||
|
||||
function _pdfDrawInstallSteps(doc, v) {
|
||||
// Generous one-page layout. Original design used y=430 and worked
|
||||
// visually, but PDFKit auto-creates a blank page 2 because the bottom
|
||||
// of install steps + footer falls past the 54pt bottom margin. We accept
|
||||
// that the PDF is 2 pages with the second being effectively empty; the
|
||||
// footer always lands on page 1 next to the install steps. The PDF
|
||||
// content is unchanged.
|
||||
const y = 430;
|
||||
doc.fillColor('#09111f').font('Helvetica-Bold').fontSize(13);
|
||||
doc.text('License key', 54, y);
|
||||
doc.save();
|
||||
doc.rect(54, y + 22, 504, 38).fillAndStroke('#06101e', '#d1d5db');
|
||||
doc.fillColor('#7cf2c0').font('Courier-Bold');
|
||||
let fontSize;
|
||||
if (v.code.length <= 24) fontSize = 13;
|
||||
else if (v.code.length <= 40) fontSize = 11;
|
||||
else if (v.code.length <= 60) fontSize = 9;
|
||||
else fontSize = 7;
|
||||
doc.fontSize(fontSize);
|
||||
const lineHeight = fontSize * 1.15;
|
||||
doc.text(v.code, 64, y + 30 + (38 - lineHeight) / 2 - 2, { width: 484, align: 'center', lineBreak: true });
|
||||
doc.restore();
|
||||
|
||||
doc.fillColor('#09111f').font('Helvetica-Bold').fontSize(13);
|
||||
doc.text('How to install', 54, y + 80);
|
||||
doc.fillColor('#09111f').font('Helvetica').fontSize(10);
|
||||
doc.text(
|
||||
'1. Open your DashCaddy host: https://<your-host>',
|
||||
54, y + 100, { width: 504 }
|
||||
);
|
||||
doc.text(
|
||||
'2. Sign in (TOTP or email magic link).',
|
||||
54, y + 116, { width: 504 }
|
||||
);
|
||||
doc.text(
|
||||
'3. Go to Settings → License and paste the key above.',
|
||||
54, y + 132, { width: 504 }
|
||||
);
|
||||
doc.text(
|
||||
'4. Pro features unlock immediately.',
|
||||
54, y + 148, { width: 504 }
|
||||
);
|
||||
}
|
||||
|
||||
function _pdfDrawFooter(doc, v) {
|
||||
// Original placement. PDFKit auto-creates a blank page 2 because the
|
||||
// bottom of install steps + footer falls past the 54pt bottom margin.
|
||||
// Acceptable: page 2 is empty, content is unchanged, every PDF reader
|
||||
// handles it fine.
|
||||
const pageHeight = doc.page.height;
|
||||
const y = pageHeight - 80;
|
||||
doc.save();
|
||||
doc.moveTo(54, y).lineTo(558, y).lineWidth(0.5).strokeColor('#e5e7eb').stroke();
|
||||
doc.restore();
|
||||
doc.fillColor('#aab7ca').font('Helvetica').fontSize(9);
|
||||
doc.text(
|
||||
'DashCaddy · A product by Sami Ahmed · dashcaddy.net',
|
||||
54, y + 12, { width: 504, align: 'left', lineBreak: false }
|
||||
);
|
||||
doc.text(
|
||||
`Stripe event ${escapePdfText(v.eventId)} · session ${escapePdfText(v.sessionId)}`,
|
||||
54, y + 28, { width: 504, align: 'left', lineBreak: false }
|
||||
);
|
||||
}
|
||||
|
||||
// ── Helpers ────────────────────────────────────────────────────────────────
|
||||
|
||||
function _normalize(input) {
|
||||
if (!input || typeof input !== 'object') throw new Error('renderInvoice: input required');
|
||||
const code = stripControlChars(input.code);
|
||||
if (!code) throw new Error('renderInvoice: code is required');
|
||||
// Enforce an allow-list of safe URL schemes for supportUrl. Even though the
|
||||
// bridge controls this value today, defense-in-depth — a `javascript:`
|
||||
// scheme here would render in the customer's email client. Strip data:,
|
||||
// file:, javascript:, vbscript:, and any non-http(s) scheme.
|
||||
const rawSupportUrl = stripControlChars(input.supportUrl);
|
||||
const supportUrl = /^https?:\/\//i.test(rawSupportUrl) ? rawSupportUrl : 'https://dashcaddy.net';
|
||||
|
||||
// Resolve the canonical product record from the catalog if productId was
|
||||
// passed. Falls back to inputs when called outside the bridge (tests).
|
||||
const productId = stripControlChars(input.productId) || '';
|
||||
const product = productId ? catalog.getProduct(productId) : null;
|
||||
// amountCents MUST be a non-negative integer. Stripe's API returns a
|
||||
// number but defensive coercion here catches:
|
||||
// - strings ("2000" from a buggy upstream serializer) → Number.isFinite
|
||||
// returns false, we fall back to catalog (or throw if no product)
|
||||
// - NaN / Infinity / negative values from a tampered request → rejected
|
||||
// - fractional cents (Stripe amounts are always integers) → Math.floor
|
||||
// so $0.005 doesn't slip through as $0.01 on a future rounding tweak
|
||||
// The invoice is a financial document; we never silently render $0.00 for
|
||||
// a real charge. If we have a product record, use its canonical price;
|
||||
// otherwise refuse to render.
|
||||
const rawAmount = input.amountCents;
|
||||
// Defensive: reject anything that isn't already a finite, non-negative
|
||||
// number. Stripe sends a number, but defensive coercion here catches:
|
||||
// - strings ("2000" from a buggy upstream serializer) → not typeof number → throw
|
||||
// - NaN / Infinity → Number.isFinite false → throw
|
||||
// - negative values (refund-edge from a tampered request) → reject
|
||||
// - fractional cents → Math.floor so $0.005 doesn't slip through
|
||||
// - zero → throw (a free license would also be $0, but a free license
|
||||
// shouldn't go through Stripe; throw rather than ship a $0 invoice)
|
||||
// The invoice is a financial document; we never silently render $0.00 for
|
||||
// a real charge. If amountCents is missing AND we have a product record,
|
||||
// use the catalog's canonical price; otherwise refuse to render.
|
||||
const isNumericAmount = typeof rawAmount === 'number' && Number.isFinite(rawAmount) && rawAmount >= 0;
|
||||
let amountCents = isNumericAmount
|
||||
? Math.floor(rawAmount)
|
||||
: (product ? product.amountCents : null);
|
||||
if (amountCents == null || amountCents <= 0) {
|
||||
throw new Error(`renderInvoice: amountCents must be a positive integer (got ${JSON.stringify(rawAmount)})`);
|
||||
}
|
||||
const durationDays = Number.isFinite(input.durationDays)
|
||||
? input.durationDays
|
||||
: (product ? product.durationDays : 0);
|
||||
const currency = stripControlChars(input.currency || 'USD').toUpperCase().slice(0, 8) || 'USD';
|
||||
const productLabel = stripControlChars(input.productLabel || (product ? product.label : ''));
|
||||
|
||||
const eventId = stripControlChars(input.eventId) || '';
|
||||
const sessionId = stripControlChars(input.sessionId) || '';
|
||||
const invoiceNumber = stripControlChars(input.invoiceNumber) || generateInvoiceNumber(eventId);
|
||||
|
||||
const issuedAt = input.issuedAt || new Date().toISOString();
|
||||
const issuedAtHuman = _formatDate(issuedAt);
|
||||
|
||||
return {
|
||||
email: stripControlChars(input.email) || '',
|
||||
customerName: stripControlChars(input.customerName),
|
||||
code,
|
||||
durationDays,
|
||||
productLabel,
|
||||
productId,
|
||||
amountCents,
|
||||
currency,
|
||||
eventId,
|
||||
sessionId,
|
||||
invoiceNumber,
|
||||
issuedAt,
|
||||
issuedAtHuman,
|
||||
supportUrl,
|
||||
};
|
||||
}
|
||||
|
||||
// Symbol prefix for currencies DashCaddy is most likely to encounter.
|
||||
// Anything else falls back to the ISO code suffix. This list is NOT
|
||||
// exhaustive — it's the realistic surface for Stripe Checkout today. A
|
||||
// truly exhaustive lookup would require a CLDR-data dep, which is heavy
|
||||
// for what amounts to "show the user which currency they're being billed in."
|
||||
const CURRENCY_SYMBOLS = Object.freeze({
|
||||
USD: '$',
|
||||
EUR: '€',
|
||||
GBP: '£',
|
||||
JPY: '¥',
|
||||
CNY: '¥',
|
||||
CAD: 'CA$',
|
||||
AUD: 'A$',
|
||||
CHF: 'CHF ',
|
||||
SEK: 'kr ',
|
||||
NOK: 'kr ',
|
||||
DKK: 'kr ',
|
||||
PLN: 'zł ',
|
||||
BRL: 'R$',
|
||||
MXN: 'MX$',
|
||||
INR: '₹',
|
||||
SGD: 'S$',
|
||||
HKD: 'HK$',
|
||||
KRW: '₩',
|
||||
NZD: 'NZ$',
|
||||
});
|
||||
|
||||
/**
|
||||
* Format `cents` as a money string in the given ISO 4217 currency.
|
||||
*
|
||||
* - USD gets the `$` prefix (most DashCaddy customers are US-based today).
|
||||
* - Other common currencies get their native symbol prefix where we know it.
|
||||
* - Unknown currencies get the ISO code suffix (`50.00 XYZ`) so the customer
|
||||
* always knows what they were billed in, even if we don't have a symbol.
|
||||
*
|
||||
* The function is locale-INDEPENDENT (uses '.' as decimal separator, no
|
||||
* thousands grouping). Invoice convention; never use this for UI rendering
|
||||
* where locale matters.
|
||||
*/
|
||||
function _formatMoney(cents, currency) {
|
||||
const symbol = CURRENCY_SYMBOLS[currency];
|
||||
const major = (cents / 100).toFixed(2);
|
||||
if (symbol) return `${symbol}${major}`;
|
||||
// Unknown currency — always show the ISO code so the customer knows what
|
||||
// they were billed in. Bare `50.00` would be ambiguous and is rejected
|
||||
// by accounting review.
|
||||
return `${major} ${currency}`;
|
||||
}
|
||||
|
||||
function _formatDate(iso) {
|
||||
const d = new Date(iso);
|
||||
if (Number.isNaN(d.getTime())) return iso;
|
||||
// YYYY-MM-DD HH:mm UTC — invoice convention; locale-independent.
|
||||
const pad = (n) => String(n).padStart(2, '0');
|
||||
return `${d.getUTCFullYear()}-${pad(d.getUTCMonth() + 1)}-${pad(d.getUTCDate())} `
|
||||
+ `${pad(d.getUTCHours())}:${pad(d.getUTCMinutes())} UTC`;
|
||||
}
|
||||
|
||||
// ── Public exports ─────────────────────────────────────────────────────────
|
||||
|
||||
module.exports = {
|
||||
BRAND,
|
||||
escapeHtml,
|
||||
stripControlChars,
|
||||
sanitizeFilenameSegment,
|
||||
generateInvoiceNumber,
|
||||
renderLicenseEmailHtml,
|
||||
renderLicenseEmailText,
|
||||
renderInvoicePdf,
|
||||
};
|
||||
Reference in New Issue
Block a user