feat: add total field to purchases and update related logic for payment processing

app/Domains/Purchase/Controllers/PurchaseController.php

@@ -55,9 +55,11 @@ class PurchaseController extends Controller
     {
         $compra = $this->resolveScopedPurchase($tenant, $request->user()->id, $compra);
         $method = $request->validated('method');
+        $totalAmount = $compra->calculateCurrentTotalAmount();
 
         $compra->update([
             'payment_method' => $method,
+            'total' => $totalAmount,
         ]);
 
         if ($method === 'transfer') {
@@ -89,9 +91,9 @@ class PurchaseController extends Controller
             $telepagosService->forTenant($tenant->codigo);
 
             try {
-                Log::info("Generating QR for purchase ID: {$compra->id}, amount: {$compra->getTotalAmount()}");
+                Log::info("Generating QR for purchase ID: {$compra->id}, amount: {$totalAmount}");
                 $qrResponse = $telepagosService->generateQr(
-                    $compra->getTotalAmount(),
+                    $totalAmount,
                     'Compra',
                     "Compra #{$compra->id}"
                 );

app/Domains/Purchase/Models/Purchase.php

@@ -18,6 +18,7 @@ use Illuminate\Database\Eloquent\Relations\HasMany;
     'status',
     'payment_status',
     'payment_method',
+    'total',
     'dni',
     'telefono',
     'nombre_apellido',
@@ -34,6 +35,7 @@ class Purchase extends Model
         return [
             'cart_id' => 'integer',
             'user_id' => 'integer',
+            'total' => 'decimal:2',
         ];
     }
 
@@ -87,13 +89,26 @@ class Purchase extends Model
 
     public function getTotalAmount(): float
     {
+        if ($this->total !== null) {
+            return (float) $this->total;
+        }
+
+        return $this->calculateCurrentTotalAmount();
+    }
+
+    public function calculateCurrentTotalAmount(): float
+    {
+        if ($this->relationLoaded('items') && $this->getRelation('items')->isNotEmpty()) {
+            return (float) $this->getRelation('items')->sum('total');
+        }
+
         if ($this->items()->exists()) {
             return (float) $this->items()->sum('total');
         }
 
         $cart = $this->relationLoaded('cart')
             ? $this->getRelation('cart')
-            : $this->cart()->first();
+            : $this->cart()->with('items.variant.product')->first();
 
         if (! $cart) {
             return 0.0;
@@ -105,8 +120,8 @@ class Purchase extends Model
     public function finalize(): void
     {
         $this->update([
-            'status' => 'pagado', // Or the equivalent final status in your system
-            'payment_status' => 'paid',
+            'status' => 'paid',
+            'payment_status' => 'approved',
         ]);
     }
 }

app/Domains/Purchase/Resources/PurchaseResource.php

@@ -19,15 +19,19 @@ class PurchaseResource extends JsonResource
             ? $this->resource->getRelation('items')
             : collect();
 
-        $subtotal = $items->reduce(
-            fn (float $carry, $item): float => $carry + ((float) $item->precio_unitario * $item->cantidad),
-            0.0,
-        );
+        $subtotal = $items->isNotEmpty()
+            ? $items->reduce(
+                fn (float $carry, $item): float => $carry + ((float) $item->precio_unitario * $item->cantidad),
+                0.0,
+            )
+            : (float) ($this->total ?? 0);
 
-        $total = $items->reduce(
-            fn (float $carry, $item): float => $carry + (float) $item->total,
-            0.0,
-        );
+        $total = $items->isNotEmpty()
+            ? $items->reduce(
+                fn (float $carry, $item): float => $carry + (float) $item->total,
+                0.0,
+            )
+            : (float) ($this->total ?? 0);
 
         return [
             'id' => $this->id,

app/Domains/Purchase/Services/CheckoutService.php

@@ -29,6 +29,10 @@ class CheckoutService
                 ]);
             }
 
+            $cartItems->load('variant.product');
+            $cart->setRelation('items', $cartItems);
+            $totalAmount = $cart->getTotalAmount();
+
             /** @var Purchase $purchase */
             $purchase = Purchase::query()->updateOrCreate(
                 [
@@ -41,6 +45,7 @@ class CheckoutService
                     ...$purchaseData,
                     'payment_status' => 'pending',
                     'payment_method' => null,
+                    'total' => $totalAmount,
                 ]
             );