✅ KDV Sistemi - FINAL Implementation

/** * KDV dahil fiyat hesaplama (Runtime) * base_price üzerinden hesaplanır */ public function getPriceWithTaxAttribute(): float { if (!$this->base_price) { return 0.0; } $taxRate = $this->tax_rate ?? 20.0; return (float) ($this->base_price * (1 + $taxRate / 100)); } /** * KDV tutarı hesaplama */ public function getTaxAmountAttribute(): float { return $this->price_with_tax - ($this->base_price ?? 0.0); }

// Public properties ekle public $base_price; // KDV hariç (DB'ye kaydedilecek) public $price_with_tax; // KDV dahil (hesaplanan, DB'ye kaydedilmez) public $tax_rate = 20.0; // mount() içinde public function mount($productId = null) { // ... existing code if ($productId) { $product = ShopProduct::find($productId); $this->base_price = $product->base_price; $this->tax_rate = $product->tax_rate ?? 20.0; $this->calculatePriceWithTax(); } } // KDV hariç fiyat değiştiğinde public function updatedBasePrice() { $this->calculatePriceWithTax(); } // KDV dahil fiyat değiştiğinde public function updatedPriceWithTax() { $this->calculateBasePrice(); } // KDV oranı değiştiğinde public function updatedTaxRate() { if ($this->base_price) { $this->calculatePriceWithTax(); } elseif ($this->price_with_tax) { $this->calculateBasePrice(); } } private function calculatePriceWithTax() { if (!$this->base_price || !$this->tax_rate) { $this->price_with_tax = null; return; } $this->price_with_tax = $this->base_price * (1 + $this->tax_rate / 100); } private function calculateBasePrice() { if (!$this->price_with_tax || !$this->tax_rate) { $this->base_price = null; return; } $this->base_price = $this->price_with_tax / (1 + $this->tax_rate / 100); } // save() metodunda public function save() { // ... validation $product->update([ 'base_price' => $this->base_price, // Sadece bu kaydedilir! 'tax_rate' => $this->tax_rate, // price_with_tax KAYDEDİLMEZ! Accessor ile hesaplanır ]); }

<!-- Fiyatlandırma Bölümü --> <div class="row"> <div class="col-md-4"> <div class="mb-3"> <label class="form-label">KDV Hariç Fiyat (₺)</label> <input type="number" wire:model.live="base_price" class="form-control" step="0.01" placeholder="Örnek: 1000.00" > <small class="form-text text-muted"> Buraya girilince KDV dahil otomatik hesaplanır </small> </div> </div> <div class="col-md-4"> <div class="mb-3"> <label class="form-label">KDV Dahil Fiyat (₺)</label> <input type="number" wire:model.live="price_with_tax" class="form-control" step="0.01" placeholder="Örnek: 1200.00" > <small class="form-text text-muted"> Buraya girilince KDV hariç otomatik hesaplanır </small> </div> </div> <div class="col-md-4"> <div class="mb-3"> <label class="form-label">KDV Oranı (%)</label> <input type="number" wire:model.live="tax_rate" class="form-control" step="0.01" > </div> </div> </div> <!-- Fiyat Özeti --> <div class="alert alert-info"> <strong>Özet:</strong> KDV Hariç: {{ number_format($base_price ?? 0, 2) }} ₺ | KDV: {{ number_format(($price_with_tax ?? 0) - ($base_price ?? 0), 2) }} ₺ | KDV Dahil: {{ number_format($price_with_tax ?? 0, 2) }} ₺ </div>

@php // Setting'den gösterim modunu al $displayMode = setting('shop_product_tax', true); // true = KDV dahil, false = KDV hariç @endphp <div class="product-card"> <h3>{{ $product->title }}</h3> <div class="product-price"> @if($displayMode) <!-- KDV Dahil Göster --> <span class="price"> {{ number_format($product->price_with_tax, 2) }} ₺ </span> <small>KDV Dahil</small> @else <!-- KDV Hariç Göster --> <span class="price"> {{ number_format($product->base_price, 2) }} ₺ </span> <small>+ KDV</small> @endif </div> </div>

protected function setPricing($cartItem, $item, $quantity): void { // Accessor'ları kullan (artık hesaplama yok!) $priceWithoutTax = $item->base_price ?? 0; // KDV hariç $priceWithTax = $item->price_with_tax ?? 0; // KDV dahil (accessor) $taxRate = $item->tax_rate ?? 20.0; // KDV oranı $taxAmount = $priceWithTax - $priceWithoutTax; // KDV tutarı // Cart item'e set et $cartItem->unit_price = $priceWithoutTax; $cartItem->tax_amount = $taxAmount; $cartItem->tax_rate = $taxRate; $cartItem->final_price = $priceWithTax; // HER ZAMAN KDV DAHİL! $cartItem->subtotal = $priceWithoutTax * $quantity; $cartItem->total = $priceWithTax * $quantity; }