marketplaces/docs/context/adrs/ADR-0002-media-manager-contract.md at 907ac2cfe09aa44ff10f8089c59172a1362061fb

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sdarbinyan b75e753d98 docs: add ADR-0002 for Media Manager backend contract and mock adapter

Documents the MediaAsset model, future GET/POST/DELETE/PATCH /media contract,
and the MediaRepository interface (Mock IndexedDB-backed now, Http later via
DI swap) that Sprint 4 will implement against. Media assets never enter the
Bootstrap model, consistent with ADR-0001.

2026-07-15 04:51:10 +04:00

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Context

Sprint 4 (Media Manager) needs a media library: upload, browse, delete, and pick images/files for use across Product Editor, Static Pages (CMS), and Branding. No media backend exists yet — /media currently routes to a "coming soon" placeholder (BackofficeComingSoonPageComponent), and docs/BACKEND.md does not document any upload/storage endpoint. This mirrors the already-documented draft-publish-flow gap in the Project Editor (see PE-20260713T010000Z-0003): build the real contract, then implement a client-side mock adapter behind the same interface so the UI never needs to change when the backend ships.

Decision

Domain model MediaAsset: { id, url, thumbnailUrl?, filename, mimeType, size, width?, height?, altText?: Record<locale, string>, tags?: string[], createdAt }. altText follows the platform's translations.{lang} rule (ADR-0001) — never a flat string.
Repository contract (future backend, to be implemented server-side):
- GET /media?page=&pageSize=&search= → paginated MediaAsset[]
- POST /media/upload (multipart) → MediaAsset
- DELETE /media/:id → 204
- PATCH /media/:id (altText/tags only) → MediaAsset
Frontend abstraction: a MediaRepository interface (Repository pattern, per docs/context/features/* conventions) with two implementations selected via DI token:
- MockMediaRepository — stores assets in IndexedDB (not localStorage: binary blobs need it) as an interim store until the backend exists. Data URLs are generated for rendering; the shape returned matches MediaAsset exactly.
- HttpMediaRepository — thin wrapper over the endpoints above, added when the backend ships. Swapping providers is the only change required.
Media never enters the Bootstrap model. Like products/orders/users, media assets are runtime admin data, not tenant configuration — consistent with ADR-0001's rule that Bootstrap contains only what's needed before the app starts.
Media Picker is a standalone, reusable dialog (built on the existing app-dialog Design System primitive) so Product Editor and CMS editors consume the same selection UI instead of each building their own.

Consequences

Any feature needing to reference an image (product gallery, static page hero, branding logo) does so via MediaAsset.url/id, obtained through the shared Media Picker — never a raw file input duplicated per feature.
When the backend ships, only MediaRepository's DI provider changes; no component or facade code should need to change.

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