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fix(media): prevent attaching an asset to a target twice

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Drop `position` from the `asset_usages` unique constraint so the same
asset can't be attached to one target/slot more than once, and update
the insert's onConflict target + lookup to match the narrower key.

Guard it at the service layer too: attachAssetService now rejects an
attach when the asset already has a usage for that target with a new
ASSET_ALREADY_ATTACHED (409) error, backed by an
assetUsageExistsForTarget query.
This commit is contained in:
Rotimi Best
2026-06-28 23:05:57 +01:00
parent 42231b3ee1
commit f18e5600f6
4 changed files with 40 additions and 8 deletions
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packages/utils/src/constants/error-codes.ts
+1
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@@ -71,6 +71,7 @@ export const ErrorCodes = {
ASSET_UPDATE_FAILED: 'ASSET_UPDATE_FAILED',
ASSET_DELETE_FAILED: 'ASSET_DELETE_FAILED',
ASSET_ATTACH_FAILED: 'ASSET_ATTACH_FAILED',
ASSET_ALREADY_ATTACHED: 'ASSET_ALREADY_ATTACHED',
ASSET_DETACH_FAILED: 'ASSET_DETACH_FAILED',
ASSET_USAGE_FETCH_FAILED: 'ASSET_USAGE_FETCH_FAILED',
ASSET_EXPORT_FAILED: 'ASSET_EXPORT_FAILED',