feat: add GeneratesUniqueSlug class for unique slug generation

feat: create PostCategoryFactory for generating post category data

feat: create PostFactory for generating post data

feat: add retry_requested_at column to services table

feat: add vcenter provisioning fields to products table

feat: add module_host_id to os table

feat: create email_notification_templates table for email templates

feat: add scenario and format fields to template table

feat: add admin fields to transactions table

fix: update ticket table columns and types

feat: add uuid to ticket table and backfill existing records

fix: make ticket_reply user_id nullable

feat: create notifications table for user notifications

fix: make ticket uuid nullable

feat: create post_categories table for blog categories

feat: create posts table for blog posts

feat: add invoice email template for PDF generation

app/Mail/InvoiceNotificationMail.php

@@ -2,19 +2,20 @@
 
 namespace App\Mail;
 
+use App\Models\EmailNotificationTemplate;
 use App\Models\Invoice;
-use Illuminate\Bus\Queueable;
-use Illuminate\Contracts\Queue\ShouldQueue;
+use App\Services\EmailNotificationTemplateRenderer;
 use Illuminate\Database\Eloquent\Collection;
 use Illuminate\Mail\Mailable;
 use Illuminate\Mail\Mailables\Content;
 use Illuminate\Mail\Mailables\Envelope;
-use Illuminate\Queue\SerializesModels;
+use Illuminate\Support\Facades\Log;
 
-class InvoiceNotificationMail extends Mailable implements ShouldQueue
+/**
+ * KHÔNG implement ShouldQueue — gọi từ trong queued job, gửi đồng bộ.
+ */
+class InvoiceNotificationMail extends Mailable
 {
-    use Queueable, SerializesModels;
-
     public function __construct(
         public readonly Invoice $invoice,
         public readonly Collection $attachments,
@@ -25,13 +26,35 @@ class InvoiceNotificationMail extends Mailable implements ShouldQueue
 
     public function envelope(): Envelope
     {
-        return new Envelope(
-            subject: "Thông báo hóa đơn #{$this->invoice->order_num} - {$this->companyName}",
-        );
+        $tpl     = $this->activeTemplate();
+        $subject = $tpl
+            ? $this->resolveSubject($tpl->subject)
+            : "Thông báo hóa đơn #{$this->invoice->invoice_number} - {$this->companyName}";
+
+        return new Envelope(subject: $subject);
     }
 
     public function content(): Content
     {
+        $tpl = $this->activeTemplate();
+
+        if ($tpl) {
+            try {
+                $renderer = app(EmailNotificationTemplateRenderer::class);
+                $html     = $renderer->render(
+                    $tpl,
+                    $this->invoice->load(['order.orderItems.product', 'customer', 'attachments']),
+                    $this->companyName
+                );
+                return new Content(htmlString: $html);
+            } catch (\Throwable $e) {
+                Log::warning('InvoiceNotificationMail: renderer failed, falling back to blade', [
+                    'template_id' => $tpl->id,
+                    'error'       => $e->getMessage(),
+                ]);
+            }
+        }
+
         return new Content(
             view: 'emails.invoice-notification',
             with: [
@@ -48,4 +71,20 @@ class InvoiceNotificationMail extends Mailable implements ShouldQueue
     {
         return [];
     }
+
+    private function activeTemplate(): ?EmailNotificationTemplate
+    {
+        return EmailNotificationTemplate::where('type', 'invoice_notification')
+            ->where('is_active', true)
+            ->first();
+    }
+
+    private function resolveSubject(string $subject): string
+    {
+        return str_replace(
+            ['{{invoice_number}}', '{{company_name}}'],
+            [$this->invoice->invoice_number ?? '', $this->companyName],
+            $subject
+        );
+    }
 }