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MattssonandClaude Fable 5.1 6ea92f3152 feat(zettle): sync paid purchases into webshop_orders (#2445)
Community PR #2416 by @olofpinzke, adopted and finished by maintainers (rebased so every commit is signed).

Why the problem occurred: no Zettle integration; POS sales only reached the books as bank descriptors while Woo/Shopify already had order underlag via webshop_orders. The contributor's version also failed at the database (platform CHECKs listed only woocommerce/shopify), which the mocked unit tests never saw.
What was simplified: reused the Orders/book/invoice path instead of a new inbox; Finance API payouts/fees deferred. Sales the one-account, revenue-per-rate model cannot book (split tender, gift cards, tips) import unbookable with a "bokför manuellt" title instead of guessing accounts. Reset parity uses the rename-and-wrap pattern instead of re-issuing the reset body.
Why this solution: per-purchase rows give the radunderlag BFL verifikat need and the bulk-book path exists; daily kassarapport aggregation and Finance API fees/payouts are the follow-up (DECISIONS.md). Skeptic-refuted paths fixed before merge: concurrent refresh-token rotation (sync claim), cron offset paging (candidate snapshot), platform CHECKs, writer-role gate, migration-reset parity, white-label return origin re-validated at callback, VAT net from product rows.

Not live until ZETTLE_CLIENT_ID / ZETTLE_CLIENT_SECRET / ZETTLE_CREDENTIALS_ENCRYPTION_KEY are set on Vercel and a Zettle developer app is registered with the callback redirect URI.

Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WtYqzKPoTSRHskYYdf7MwB
2026-09-09 11:19:39 +02:00

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TypeScript

import { describe, it, expect } from 'vitest'
process.env.ZETTLE_CREDENTIALS_ENCRYPTION_KEY = 'test-key'
import { decryptCredential, encryptCredential, isZettleConfigured } from '../lib/credentials'
describe('zettle credentials', () => {
it('round-trips AES-GCM ciphertext', () => {
const cipher = encryptCredential('IZSEC-refresh-token')
expect(cipher).not.toContain('IZSEC')
expect(decryptCredential(cipher)).toBe('IZSEC-refresh-token')
})
it('is configured only when all three env vars are set', () => {
const prev = {
id: process.env.ZETTLE_CLIENT_ID,
secret: process.env.ZETTLE_CLIENT_SECRET,
key: process.env.ZETTLE_CREDENTIALS_ENCRYPTION_KEY,
}
process.env.ZETTLE_CLIENT_ID = 'id'
process.env.ZETTLE_CLIENT_SECRET = 'secret'
process.env.ZETTLE_CREDENTIALS_ENCRYPTION_KEY = 'key'
expect(isZettleConfigured()).toBe(true)
delete process.env.ZETTLE_CLIENT_ID
expect(isZettleConfigured()).toBe(false)
process.env.ZETTLE_CLIENT_ID = prev.id
process.env.ZETTLE_CLIENT_SECRET = prev.secret
process.env.ZETTLE_CREDENTIALS_ENCRYPTION_KEY = prev.key
})
})