/**
 * GET /api/inventory/items/[id] — Get inventory item detail with recent movements
 */
import { NextRequest, NextResponse } from "next/server";
import { withPermission } from "@/lib/middleware/authorize";
import { withTenantContext } from "@/lib/prisma-tenant";
import { InventoryService } from "@/lib/services/inventory-service";

export function GET(req: NextRequest, { params }: { params: Promise<{ id: string }> }) {
  return withPermission("read", "Inventory")(
    async (_req: NextRequest, { user }) => {
      if (!user.tenantId) {
        return NextResponse.json(
          { error: "No tenant context — super-admins must use the admin API" },
          { status: 400 }
        );
      }

      const { id } = await params;
      const tenantPrisma = withTenantContext(user.tenantId);

      try {
        const item = await InventoryService.getItem(tenantPrisma, id);
        if (!item) {
          return NextResponse.json({ error: "Item not found" }, { status: 404 });
        }
        return NextResponse.json(item);
      } catch (err) {
        const message = err instanceof Error ? err.message : "Failed to get item";
        return NextResponse.json({ error: message }, { status: 500 });
      }
    }
  )(req);
}