Fix Livewire 4 computed properties: replace get*Property with #[Computed]

Livewire 4 dropped support for the legacy get*Property() magic accessor.
Migrated all 6 affected components to use the #[Computed] attribute:
- NewRegistrationWizard (hotbuyResults, hotbuyTotal, selectedProgram, etc.)
- WeeklySchedule (weekDays, timeSlots)
- InvoiceCreate (subtotal, total)
- InvoiceShow (canCancel, canRecordPayment)
- SystemSettings (activeSchema)
- NotificationTemplateForm (availableVariables)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Livewire/Admin/SystemSettings.php

@@ -4,6 +4,7 @@
 
 use App\Domain\Shared\Models\SystemSetting;
 use App\Domain\Shared\Services\SettingsService;
+use Livewire\Attributes\Computed;
 use Livewire\Attributes\Layout;
 use Livewire\Attributes\Title;
 use Livewire\Component;
@@ -201,7 +202,8 @@ public function save(SettingsService $service): void
         session()->flash('success', __('تم حفظ الإعدادات بنجاح'));
     }
 
-    public function getActiveSchemaProperty(): array
+    #[Computed]
+    public function activeSchema(): array
     {
         return $this->settingsSchema[$this->activeTab] ?? [];
     }

app/Livewire/Invoices/InvoiceCreate.php

@@ -5,6 +5,7 @@
 use App\Domain\Financial\Services\InvoiceService;
 use App\Domain\Participant\Models\Participant;
 use App\Domain\Shared\Exceptions\DomainException;
+use Livewire\Attributes\Computed;
 use Livewire\Attributes\Layout;
 use Livewire\Attributes\Title;
 use Livewire\Component;
@@ -127,12 +128,14 @@ public function save(InvoiceService $service): void
         }
     }
 
-    public function getSubtotalProperty(): float
+    #[Computed]
+    public function subtotal(): float
     {
         return collect($this->items)->sum(fn ($item) => ($item['quantity'] ?? 0) * ($item['unit_price'] ?? 0));
     }
 
-    public function getTotalProperty(): float
+    #[Computed]
+    public function total(): float
     {
         return $this->subtotal - $this->discount_amount + $this->tax_amount;
     }

app/Livewire/Invoices/InvoiceShow.php

@@ -8,6 +8,7 @@
 use App\Domain\Financial\Services\InvoiceService;
 use App\Domain\Financial\Services\PaymentService;
 use App\Domain\Shared\Exceptions\DomainException;
+use Livewire\Attributes\Computed;
 use Livewire\Attributes\Layout;
 use Livewire\Attributes\Title;
 use Livewire\Component;
@@ -95,13 +96,15 @@ public function cancelInvoice(InvoiceService $service): void
         }
     }
 
-    public function getCanCancelProperty(): bool
+    #[Computed]
+    public function canCancel(): bool
     {
         return in_array($this->invoice->status, [InvoiceStatus::Draft, InvoiceStatus::Sent])
             && $this->invoice->paid_amount === 0;
     }
 
-    public function getCanRecordPaymentProperty(): bool
+    #[Computed]
+    public function canRecordPayment(): bool
     {
         return $this->invoice->due_amount > 0
             && !in_array($this->invoice->status, [InvoiceStatus::Cancelled, InvoiceStatus::Refunded]);

app/Livewire/Notifications/NotificationTemplateForm.php

@@ -4,6 +4,7 @@
 
 use App\Domain\Notification\Enums\NotificationChannel;
 use App\Domain\Notification\Models\NotificationTemplate;
+use Livewire\Attributes\Computed;
 use Livewire\Attributes\Layout;
 use Livewire\Attributes\Title;
 use Livewire\Component;
@@ -133,7 +134,8 @@ public function save(): void
         $this->redirect(route('notifications.templates'), navigate: true);
     }
 
-    public function getAvailableVariablesProperty(): array
+    #[Computed]
+    public function availableVariables(): array
     {
         return $this->eventVariables[$this->event_type] ?? [];
     }

app/Livewire/Receptionist/NewRegistrationWizard.php

@@ -9,6 +9,8 @@
 use App\Domain\Identity\Models\Guardian;
 use App\Domain\Identity\Models\Person;
 use App\Domain\Identity\Services\PersonService;
+use App\Domain\Inventory\Models\Kit;
+use App\Domain\Inventory\Models\Product;
 use App\Domain\Participant\Models\Participant;
 use App\Domain\Participant\Services\DuplicateDetectionService;
 use App\Domain\Participant\Services\ParticipantService;
@@ -20,6 +22,7 @@
 use App\Domain\Training\Models\TrainingProgram;
 use App\Domain\Training\Services\EnrollmentService;
 use Illuminate\Support\Facades\DB;
+use Livewire\Attributes\Computed;
 use Livewire\Attributes\Layout;
 use Livewire\Attributes\Title;
 use Livewire\Component;
@@ -77,6 +80,10 @@ class NewRegistrationWizard extends Component
     public ?string $invoice_uuid = null;
     public bool $payment_recorded = false;
 
+    // Hot-buy items (optional products/kits sold alongside registration)
+    public string $hotbuy_search = '';
+    public array $hotbuyCart = [];
+
     // Pre-flight errors — blocks wizard from starting
     public array $systemErrors = [];
 
@@ -278,6 +285,100 @@ public function updatedSelectedActivityId(): void
         $this->selected_program_id = null;
     }
 
+    // --- Hot-buy methods ---
+
+    #[Computed]
+    public function hotbuyResults(): array
+    {
+        if (strlen($this->hotbuy_search) < 2) {
+            return [];
+        }
+
+        $search = $this->hotbuy_search;
+
+        $products = Product::where('is_active', true)
+            ->where(fn ($q) => $q->where('name_ar', 'ilike', "%{$search}%")
+                ->orWhere('name', 'ilike', "%{$search}%")
+                ->orWhere('sku', 'ilike', "%{$search}%")
+                ->orWhere('barcode', $search))
+            ->limit(5)
+            ->get()
+            ->map(fn ($p) => [
+                'id' => $p->id,
+                'type' => 'product',
+                'name_ar' => $p->name_ar,
+                'name' => $p->name,
+                'sku' => $p->sku,
+                'price' => $p->selling_price,
+            ])->toArray();
+
+        $kits = Kit::where('is_active', true)
+            ->where(fn ($q) => $q->where('name_ar', 'ilike', "%{$search}%")
+                ->orWhere('name', 'ilike', "%{$search}%")
+                ->orWhere('sku', 'ilike', "%{$search}%"))
+            ->limit(5)
+            ->get()
+            ->map(fn ($k) => [
+                'id' => $k->id,
+                'type' => 'kit',
+                'name_ar' => $k->name_ar,
+                'name' => $k->name,
+                'sku' => $k->sku,
+                'price' => $k->selling_price,
+            ])->toArray();
+
+        return array_merge($products, $kits);
+    }
+
+    public function addHotbuyItem(int $id, string $type): void
+    {
+        $key = "{$type}_{$id}";
+
+        if (isset($this->hotbuyCart[$key])) {
+            $this->hotbuyCart[$key]['quantity']++;
+        } else {
+            $item = $type === 'product'
+                ? Product::find($id)
+                : Kit::find($id);
+
+            if (!$item) {
+                return;
+            }
+
+            $this->hotbuyCart[$key] = [
+                'id' => $item->id,
+                'type' => $type,
+                'name_ar' => $item->name_ar,
+                'price' => $item->selling_price,
+                'quantity' => 1,
+            ];
+        }
+
+        $this->hotbuy_search = '';
+    }
+
+    public function removeHotbuyItem(string $key): void
+    {
+        unset($this->hotbuyCart[$key]);
+    }
+
+    public function updateHotbuyQuantity(string $key, int $quantity): void
+    {
+        if ($quantity <= 0) {
+            unset($this->hotbuyCart[$key]);
+            return;
+        }
+        if (isset($this->hotbuyCart[$key])) {
+            $this->hotbuyCart[$key]['quantity'] = $quantity;
+        }
+    }
+
+    #[Computed]
+    public function hotbuyTotal(): int
+    {
+        return collect($this->hotbuyCart)->sum(fn ($item) => $item['price'] * $item['quantity']);
+    }
+
     public function confirm(): void
     {
         try {
@@ -356,15 +457,40 @@ public function confirm(): void
                     $actor
                 );
 
-                // 7. Look up the price for this program + calculate platform fee
+                // 7. Look up the price for this program + calculate platform fee + hot-buy
                 $feeAmount = $this->resolveProgramFee($program);
+                $hotbuyTotal = $this->hotbuyTotal;
+                $subtotal = $feeAmount + $hotbuyTotal;
                 $platformFeeService = app(PlatformFeeService::class);
-                $serviceFee = $platformFeeService->calculate($feeAmount);
-                $totalWithFee = $feeAmount + $serviceFee;
+                $customerPays = $platformFeeService->customerPays();
+                $serviceFee = $customerPays ? $platformFeeService->calculate($subtotal) : 0;
+                $totalWithFee = $subtotal + $serviceFee;
 
-                // 8. Create invoice if there's a fee
+                // 8. Create invoice if there's a fee or hot-buy items
                 $invoice = null;
-                if ($feeAmount > 0) {
+                if ($subtotal > 0) {
+                    $invoiceItems = [];
+
+                    if ($feeAmount > 0) {
+                        $invoiceItems[] = [
+                            'description' => $program->name_ar,
+                            'quantity' => 1,
+                            'unit_price' => $feeAmount,
+                            'discount_amount' => 0,
+                            'tax_amount' => 0,
+                        ];
+                    }
+
+                    foreach ($this->hotbuyCart as $cartItem) {
+                        $invoiceItems[] = [
+                            'description' => $cartItem['name_ar'],
+                            'quantity' => $cartItem['quantity'],
+                            'unit_price' => $cartItem['price'],
+                            'discount_amount' => 0,
+                            'tax_amount' => 0,
+                        ];
+                    }
+
                     $invoice = $invoiceService->create([
                         'academy_id' => app('current_academy')->id,
                         'number' => $invoiceService->generateNumber(app('current_academy')->id),
@@ -373,7 +499,7 @@ public function confirm(): void
                         'billable_id' => $participant->id,
                         'contact_name' => $this->guardian_name_ar,
                         'contact_phone' => $this->guardian_phone,
-                        'subtotal_amount' => $feeAmount,
+                        'subtotal_amount' => $subtotal,
                         'discount_amount' => 0,
                         'tax_amount' => 0,
                         'service_fee_amount' => $serviceFee,
@@ -382,15 +508,7 @@ public function confirm(): void
                         'issue_date' => now()->toDateString(),
                         'due_date' => now()->addDays(7)->toDateString(),
                         'notes' => 'اشتراك: ' . $program->name_ar,
-                    ], [
-                        [
-                            'description' => $program->name_ar,
-                            'quantity' => 1,
-                            'unit_price' => $feeAmount,
-                            'discount_amount' => 0,
-                            'tax_amount' => 0,
-                        ],
-                    ], $actor);
+                    ], $invoiceItems, $actor);
 
                     // Send the invoice (mark as sent)
                     $invoice->update(['status' => 'sent']);
@@ -474,7 +592,8 @@ private function resolveProgramFee(TrainingProgram $program): int
         return $genericPrice?->amount ?? 0;
     }
 
-    public function getSelectedProgramProperty(): ?TrainingProgram
+    #[Computed]
+    public function selectedProgram(): ?TrainingProgram
     {
         if (!$this->selected_program_id) {
             return null;
@@ -483,7 +602,8 @@ public function getSelectedProgramProperty(): ?TrainingProgram
         return TrainingProgram::with('activity')->find($this->selected_program_id);
     }
 
-    public function getSelectedProgramFeeProperty(): int
+    #[Computed]
+    public function selectedProgramFee(): int
     {
         if (!$this->selected_program_id) {
             return 0;
@@ -493,17 +613,25 @@ public function getSelectedProgramFeeProperty(): int
         return $program ? $this->resolveProgramFee($program) : 0;
     }
 
-    public function getPlatformFeeProperty(): int
+    #[Computed]
+    public function platformFee(): int
     {
-        return app(PlatformFeeService::class)->calculate($this->selectedProgramFee);
+        $service = app(PlatformFeeService::class);
+        if (!$service->customerPays()) {
+            return 0;
+        }
+        $subtotal = $this->selectedProgramFee + $this->hotbuyTotal;
+        return $service->calculate($subtotal);
     }
 
-    public function getTotalWithFeeProperty(): int
+    #[Computed]
+    public function totalWithFee(): int
     {
-        return $this->selectedProgramFee + $this->platformFee;
+        return $this->selectedProgramFee + $this->hotbuyTotal + $this->platformFee;
     }
 
-    public function getInvoiceForPrintProperty(): ?Invoice
+    #[Computed]
+    public function invoiceForPrint(): ?Invoice
     {
         if (!$this->invoiceId) {
             return null;

app/Livewire/Schedule/WeeklySchedule.php

@@ -8,6 +8,7 @@
 use App\Models\User;
 use Carbon\Carbon;
 use Carbon\CarbonPeriod;
+use Livewire\Attributes\Computed;
 use Livewire\Attributes\Layout;
 use Livewire\Attributes\Title;
 use Livewire\Attributes\Url;
@@ -52,7 +53,8 @@ public function goToToday(): void
         $this->weekStart = $today->startOfWeek(Carbon::SATURDAY)->format('Y-m-d');
     }
 
-    public function getWeekDaysProperty(): array
+    #[Computed]
+    public function weekDays(): array
     {
         $start = Carbon::parse($this->weekStart);
         $days = [];
@@ -79,7 +81,8 @@ public function getWeekDaysProperty(): array
         return $days;
     }
 
-    public function getTimeSlotsProperty(): array
+    #[Computed]
+    public function timeSlots(): array
     {
         $slots = [];
         for ($hour = 8; $hour <= 22; $hour++) {