feat(notification): 實作通知輪詢與優化顯示名稱

- 新增通知輪詢 API 與前端自動更新機制
- 修正生產工單單號格式為 PRO-YYYYMMDD-XX
- 確保通知顯示實際建立者名稱而非系統

app/Modules/Procurement/Models/PurchaseOrder.php

@@ -62,6 +62,11 @@ class PurchaseOrder extends Model
         return $this->belongsTo(Vendor::class);
     }
 
+    public function user(): \Illuminate\Database\Eloquent\Relations\BelongsTo
+    {
+        return $this->belongsTo(\App\Modules\Core\Models\User::class);
+    }
+
 
 
 

app/Modules/Procurement/Notifications/NewPurchaseOrder.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace App\Modules\Procurement\Notifications;
+
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Notifications\Messages\MailMessage;
+use Illuminate\Notifications\Notification;
+use App\Modules\Procurement\Models\PurchaseOrder;
+
+class NewPurchaseOrder extends Notification
+{
+    use Queueable;
+
+    protected $purchaseOrder;
+    protected $creatorName;
+
+    /**
+     * Create a new notification instance.
+     */
+    public function __construct(PurchaseOrder $purchaseOrder, string $creatorName)
+    {
+        $this->purchaseOrder = $purchaseOrder;
+        $this->creatorName = $creatorName;
+    }
+
+    /**
+     * Get the notification's delivery channels.
+     *
+     * @return array<int, string>
+     */
+    public function via(object $notifiable): array
+    {
+        return ['database'];
+    }
+
+    /**
+     * Get the array representation of the notification.
+     *
+     * @return array<string, mixed>
+     */
+    public function toArray(object $notifiable): array
+    {
+        return [
+            'type' => 'purchase_order',
+            'action' => 'created',
+            'purchase_order_id' => $this->purchaseOrder->id,
+            'code' => $this->purchaseOrder->code,
+            'creator_name' => $this->creatorName,
+            'message' => "{$this->creatorName} 建立了新的採購單：{$this->purchaseOrder->code}",
+            'link' => route('purchase-orders.index', ['search' => $this->purchaseOrder->code]), // 暫時導向列表並搜尋，若有詳情頁可改
+        ];
+    }
+}

app/Modules/Procurement/Observers/PurchaseOrderObserver.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Modules\Procurement\Observers;
+
+use App\Modules\Procurement\Models\PurchaseOrder;
+use App\Modules\Procurement\Notifications\NewPurchaseOrder;
+use App\Modules\Core\Models\User;
+use Illuminate\Support\Facades\Notification;
+
+class PurchaseOrderObserver
+{
+    /**
+     * Handle the PurchaseOrder "created" event.
+     */
+    public function created(PurchaseOrder $purchaseOrder): void
+    {
+        // 找出有檢視採購單權限的使用者
+        $users = User::permission('purchase_orders.view')->get();
+        
+        // 排除建立者自己（避免自己收到自己的通知）
+        // $users = $users->reject(function ($user) use ($purchaseOrder) {
+        //     return $user->id === $purchaseOrder->user_id;
+        // });
+
+        $creatorName = $purchaseOrder->user ? $purchaseOrder->user->name : '系統';
+
+        if ($users->isNotEmpty()) {
+            Notification::send($users, new NewPurchaseOrder($purchaseOrder, $creatorName));
+        }
+    }
+}

app/Modules/Procurement/ProcurementServiceProvider.php

@@ -6,6 +6,10 @@ use Illuminate\Support\ServiceProvider;
 use App\Modules\Procurement\Contracts\ProcurementServiceInterface;
 use App\Modules\Procurement\Services\ProcurementService;
 
+
+use App\Modules\Procurement\Models\PurchaseOrder;
+use App\Modules\Procurement\Observers\PurchaseOrderObserver;
+
 class ProcurementServiceProvider extends ServiceProvider
 {
     public function register(): void
@@ -15,6 +19,6 @@ class ProcurementServiceProvider extends ServiceProvider
 
     public function boot(): void
     {
-        //
+        PurchaseOrder::observe(PurchaseOrderObserver::class);
     }
 }