Restrict order quantity edits to pending orders

apps/api/src/orders/order-status.ts

@@ -1,8 +1,6 @@
 import type { OrderStatus } from "@orderops/shared/order-status";
 
-export function canEditOrderItems(status: OrderStatus) {
-  return status === "pending" || status === "processing";
-}
+export { canEditOrderItems } from "@orderops/shared/order-status";
 
 export function canEditShippingAddress(status: OrderStatus) {
   return status === "pending" || status === "processing";

apps/web/src/orders/order-items-panel.tsx

@@ -1,5 +1,6 @@
 import { useState } from "react";
 import type { OrderDetail } from "@orderops/shared";
+import { canEditOrderItems } from "@orderops/shared/order-status";
 
 interface OrderItemsPanelProps {
   order: OrderDetail;
@@ -39,9 +40,14 @@ function QuantityForm({
 }
 
 export function OrderItemsPanel({ order, onUpdateQuantity }: OrderItemsPanelProps) {
+  const canEditQuantity = canEditOrderItems(order.status);
+
   return (
     <section className="rounded-xl border border-slate-200 bg-white p-4 shadow-sm">
       <h3 className="mb-3 text-sm font-semibold text-slate-700">Items</h3>
+      {!canEditQuantity ? (
+        <p className="mb-3 text-sm text-slate-600">Item quantities can only be changed while an order is pending.</p>
+      ) : null}
       <div className="space-y-3">
         {order.items.map((item) => (
           <div key={item.id} className="rounded-lg border border-slate-200 p-3">
@@ -51,7 +57,11 @@ export function OrderItemsPanel({ order, onUpdateQuantity }: OrderItemsPanelProp
                 <div className="text-sm text-slate-600">{item.sku}</div>
                 <div className="text-sm text-slate-500">Available: {item.availableQuantity}</div>
               </div>
-              <QuantityForm itemId={item.id} quantity={item.quantity} onSave={onUpdateQuantity} />
+              {canEditQuantity ? (
+                <QuantityForm itemId={item.id} quantity={item.quantity} onSave={onUpdateQuantity} />
+              ) : (
+                <div className="text-sm text-slate-700">Quantity: {item.quantity}</div>
+              )}
             </div>
           </div>
         ))}

packages/shared/src/order-status.ts

@@ -1,3 +1,7 @@
 export const orderStatuses = ["pending", "processing", "shipped", "cancelled", "refunded"] as const;
 
 export type OrderStatus = (typeof orderStatuses)[number];
+
+export function canEditOrderItems(status: OrderStatus) {
+  return status === "pending";
+}