@codefusion-cc/commerce-marketplaces

The marketplaces a CodeFusion shop sells on, run from its catalog. The catalog is the source of truth: prices and stock go out from it, and orders come into the panel. Allegro comes first. Empik (Mirakl) and InPost Von Halsky follow (ROADMAP).

npm install @codefusion-cc/commerce-marketplaces

Entry points

A shop imports only the marketplaces it sells on, so its Worker bundles no other marketplace's code (the rule for every commerce kind: ROADMAP.md, Commerce).

| Entry | Holds | | --- | --- | | @codefusion-cc/commerce-marketplaces | What every marketplace's client is given (MarketplaceContext). No marketplace. | | …/allegro | Allegro's client and everything of ./allegro/browser. | | …/allegro/browser | Allegro's definition (allegroDef), allegroEnvironment and an order's fulfillment states (FULFILLMENT), without the client. | | …/testing | A fake of Allegro. |

There is no ./browser yet: no marketplace shares anything with the pages.

Allegro

import { allOffers, getOffer, orderEvents, setOfferPrice, setOfferStock, startDeviceAuthorization, pollDeviceAuthorization } from '@codefusion-cc/commerce-marketplaces/allegro'

// The Allegro plugin's context (@codefusion-cc/commerce) as it is: config (mode: sandbox | production, client_id),
// secrets (client_secret, and the account's tokens once connected), fetch and saveSecrets.
const ctx = await store.enabledContext(env, site, 'allegro')

// Connect the seller's account from the panel: show the link, poll until the owner confirms on Allegro.
const { verification_uri_complete, device_code, interval } = await startDeviceAuthorization(ctx)
await pollDeviceAuthorization(ctx, device_code) // 'pending' | 'slower' | 'connected' | 'denied' | 'expired'

for await (const offer of allOffers(ctx)) {} // import: page by page, 1000 at a time
const details = await getOffer(ctx, id) // images, description as HTML, parameters, EAN, handling time
await setOfferPrice(ctx, id, 4050) // grosze, from the channel's price list
await setOfferStock(ctx, id, 2) // after a sale anywhere
const events = await orderEvents(ctx, lastEventId) // new orders since the last check

// The panel's page: the definition, without the client.
import { allegroDef } from '@codefusion-cc/commerce-marketplaces/allegro/browser'

• Tokens. Allegro's refresh tokens rotate on every refresh, and the old one stops working within a minute. So the new one is saved at once, through saveSecrets (the store's updateSecrets, sealed). If that fails, the account has to be connected again. Requests at the same moment share one refresh, even with contexts of their own.
• Errors. Errors are a ProviderError (@codefusion-cc/commerce). An access token that Allegro calls expired (401) is refreshed once. A rate limit carries retryAfter. No answer, or a 5xx, is uncertain: check the offer before changing it again.
• The device flow needs no return address on the shop. The confirmation link must be on Allegro's own domain.

A new marketplace

A marketplace is an entry of this package: src/<marketplace>/index.ts (its client, taking a MarketplaceContext) and src/<marketplace>/browser.ts (its definition), both listed in exports; what two marketplaces share moves into the root. It becomes a package of its own (@codefusion-cc/commerce-marketplaces-<marketplace>) only when it needs a heavy dependency, is maintained by someone else, or needs its own release pace.

Testing

fakeAllegroApi({ offers }) from @codefusion-cc/commerce-marketplaces/testing plays Allegro: client allegro-id / allegro-secret. The kind's fakes stay in this one entry (tests never reach a Worker's bundle).

• Refresh tokens rotate.
• confirm() makes the owner confirm the device flow.
• buy(offerId, qty) makes a buyer buy: an order, its event, and less stock (a sold-out offer ends).
• state.rateLimited answers 429.