The only way to move an Assignment to a new employee was two separate calls (PATCH return + POST create), which is not atomic and left a race window where a third party could grab the now-in_stock AssetItem in between, plus no rollback if the second call failed. Adds transferAssignment() which closes the old Assignment and creates the new one inside a single prisma.$transaction(), per docs/asset-license-management.md's "Assignment (chốt 2026-08-02)" spec. Does not touch AssetItem.status or License.seatsUsed — the resource never becomes free mid-transfer. Wired into PATCH /api/assignments/[id]: an employeeId key in the body dispatches to transfer, a returnedAt key to return, both together is rejected as mutually exclusive.
87 lines
3.4 KiB
TypeScript
87 lines
3.4 KiB
TypeScript
import { NextResponse } from "next/server";
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import { z } from "zod";
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import { auth } from "@/auth";
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import {
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returnAssignment,
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transferAssignment,
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validateReturnAssignmentInput,
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validateTransferAssignmentInput,
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} from "@/lib/assignments";
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// First dynamic-segment ([id]) route in the codebase — see
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// docs/asset-license-management.md's "Assignment (chốt 2026-08-02)" section,
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// bullet (b): update routes use PATCH /api/<entity>/[id], not an
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// action-based sub-route (e.g. NOT /api/assignments/[id]/return). Next.js
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// 14 App Router route handler params are a plain synchronous object (not a
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// Promise) — that changed starting in Next.js 15, which this project does
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// not use (see package.json / CLAUDE.md).
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export async function PATCH(
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request: Request,
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{ params }: { params: { id: string } }
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): Promise<NextResponse> {
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const session = await auth();
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if (!session) {
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return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
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}
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// Validate the [id] path segment's format up front — an invalid UUID
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// passed straight to Prisma's `findUnique({ where: { id } })` (a `@db.Uuid`
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// column) throws a raw PrismaClientKnownRequestError that
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// returnAssignment()'s try/catch doesn't specifically handle, which would
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// otherwise leak as an uncaught 500 instead of a clean 400.
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if (!z.string().uuid().safeParse(params.id).success) {
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return NextResponse.json({ error: "id must be a valid UUID string" }, { status: 400 });
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}
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let body: unknown;
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try {
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body = await request.json();
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} catch {
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return NextResponse.json({ error: "Request body must be valid JSON" }, { status: 400 });
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}
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if (typeof body !== "object" || body === null) {
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return NextResponse.json({ error: "Request body must be a JSON object" }, { status: 400 });
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}
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const { returnedAt, employeeId } = body as Record<string, unknown>;
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// Dispatch on body shape — a body carrying employeeId is a transfer
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// request, everything else is the existing return behavior. The two are
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// mutually exclusive: don't guess intent if a caller sends both (see
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// docs/asset-license-management.md's "Assignment (chốt 2026-08-02)"
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// section, bullet right after the transfer rule, for why this stays a
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// single PATCH route rather than an action-based sub-route).
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if (employeeId !== undefined && returnedAt !== undefined) {
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return NextResponse.json(
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{ error: "Provide either employeeId (transfer) or returnedAt (return), not both" },
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{ status: 400 }
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);
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}
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if (employeeId !== undefined) {
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const transferValidation = validateTransferAssignmentInput({ employeeId });
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if (!transferValidation.ok) {
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return NextResponse.json({ error: transferValidation.error }, { status: 400 });
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}
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const transferred = await transferAssignment(params.id, transferValidation.value);
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if (!transferred.ok) {
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return NextResponse.json({ error: transferred.error }, { status: transferred.status });
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}
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return NextResponse.json(transferred.value, { status: 200 });
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}
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const validation = validateReturnAssignmentInput({ returnedAt });
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if (!validation.ok) {
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return NextResponse.json({ error: validation.error }, { status: 400 });
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}
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const updated = await returnAssignment(params.id, validation.value);
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if (!updated.ok) {
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return NextResponse.json({ error: updated.error }, { status: updated.status });
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}
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return NextResponse.json(updated.value, { status: 200 });
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}
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