toanhoang
a72b8dbbbe
createAssignment() enforces the XOR (assetItemId/licenseId) at the Zod layer and the AssetItem.status/License.seatsUsed business rules inside a single prisma.$transaction(), using atomic WHERE-guarded updateMany() calls (not plain read-then-write) to close the seat-overbooking and double-assignment race conditions flagged for License by code-reviewer. returnAssignment() reverses those side-effects the same way and closes the double-return race with the same pattern.