feat: Add event association to purchases; implement event relationship in models, update migration, and enhance tests

app/Domains/Event/Models/Event.php

@@ -3,6 +3,7 @@
 namespace App\Domains\Event\Models;
 
 use App\Domains\Catalog\Models\CatalogItem;
+use App\Domains\Purchase\Models\Purchase;
 use App\Domains\Tenant\Models\Tenant;
 use Illuminate\Database\Eloquent\Attributes\Fillable;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
@@ -38,4 +39,10 @@ class Event extends Model
     {
         return $this->hasMany(CatalogItem::class);
     }
+
+    /** @return HasMany<Purchase, $this> */
+    public function purchases(): HasMany
+    {
+        return $this->hasMany(Purchase::class);
+    }
 }

app/Domains/Purchase/Models/Purchase.php

@@ -4,6 +4,7 @@ namespace App\Domains\Purchase\Models;
 
 use App\Domains\Auth\Models\User;
 use App\Domains\Cart\Models\Cart;
+use App\Domains\Event\Models\Event;
 use App\Domains\Logging\Models\Concerns\LogsValueChanges;
 use App\Domains\Purchase\Events\PurchasePaid;
 use App\Domains\Tenant\Models\Tenant;
@@ -19,6 +20,7 @@ use Illuminate\Support\Facades\DB;
 #[Fillable([
     'cart_id',
     'tenant_codigo',
+    'event_id',
     'user_id',
     'status',
     'payment_method',
@@ -70,6 +72,7 @@ class Purchase extends Model
     {
         return [
             'cart_id' => 'integer',
+            'event_id' => 'integer',
             'user_id' => 'integer',
             'expires_at' => 'datetime',
             'total' => 'decimal:2',
@@ -84,6 +87,12 @@ class Purchase extends Model
         return $this->belongsTo(Tenant::class, 'tenant_codigo', 'codigo');
     }
 
+    /** @return BelongsTo<Event, $this> */
+    public function event(): BelongsTo
+    {
+        return $this->belongsTo(Event::class);
+    }
+
     /**
      * @return BelongsTo<User, $this>
      */

app/Domains/Purchase/Resources/PurchaseResource.php

@@ -42,6 +42,7 @@ class PurchaseResource extends JsonResource
             'id' => $this->id,
             'cart_id' => $this->cart_id,
             'tenant_codigo' => $this->tenant_codigo,
+            'event_id' => $this->event_id,
             'user_id' => $this->user_id,
             'created_at' => $this->created_at,
             'status' => $this->status,

app/Domains/Purchase/Services/CheckoutService.php

@@ -26,6 +26,11 @@ class CheckoutService
     public function startCheckout(Tenant $tenant, int $userId, array $purchaseData): Purchase
     {
         return DB::transaction(function () use ($tenant, $userId, $purchaseData): Purchase {
+            /** @var Tenant $tenant */
+            $tenant = Tenant::query()
+                ->lockForUpdate()
+                ->findOrFail($tenant->getKey());
+
             $directItem = $purchaseData['direct_item'] ?? null;
             $cartId = isset($purchaseData['cart_id']) ? (int) $purchaseData['cart_id'] : null;
             unset($purchaseData['direct_item'], $purchaseData['cart_id']);
@@ -615,6 +620,7 @@ class CheckoutService
             ...$purchaseData,
             'cart_id' => $cartId,
             'tenant_codigo' => $tenant->codigo,
+            'event_id' => $tenant->active_event_id,
             'user_id' => $userId,
             'status' => Purchase::STATUS_CREATED,
             'payment_method' => null,