phase 2 and 3

app/api/v1/assemblies/[id]/parts/route.ts

@@ -0,0 +1,54 @@
+import { type NextRequest } from "next/server";
+import { prisma } from "@/lib/prisma";
+import { ok, errorResponse, requireRole, parseJson, ApiError } from "@/lib/api";
+import { CreatePartSchema } from "@/lib/schemas";
+import { audit } from "@/lib/audit";
+import { clientIp } from "@/lib/request";
+
+export async function GET(_req: NextRequest, ctx: { params: Promise<{ id: string }> }) {
+  try {
+    await requireRole("admin");
+    const { id } = await ctx.params;
+    const parts = await prisma.part.findMany({
+      where: { assemblyId: id },
+      orderBy: { code: "asc" },
+      include: { _count: { select: { operations: true } } },
+    });
+    return ok({ parts });
+  } catch (err) {
+    return errorResponse(err);
+  }
+}
+
+export async function POST(req: NextRequest, ctx: { params: Promise<{ id: string }> }) {
+  try {
+    const actor = await requireRole("admin");
+    const { id } = await ctx.params;
+    const body = await parseJson(req, CreatePartSchema);
+
+    const assembly = await prisma.assembly.findUnique({ where: { id } });
+    if (!assembly) throw new ApiError(404, "not_found", "Assembly not found");
+
+    const created = await prisma.part.create({
+      data: {
+        assemblyId: id,
+        code: body.code,
+        name: body.name,
+        material: body.material ?? null,
+        qty: body.qty,
+        notes: body.notes ?? null,
+      },
+    });
+    await audit({
+      actorId: actor.id,
+      action: "create",
+      entity: "Part",
+      entityId: created.id,
+      after: created,
+      ipAddress: clientIp(req),
+    });
+    return ok({ part: created }, { status: 201 });
+  } catch (err) {
+    return errorResponse(err);
+  }
+}