feat(admin-stock): apply idempotent availability deltas

app/Domains/Ticketing/FiestaFutbolInfantil/Services/MerchandiseService.php

@@ -43,9 +43,9 @@ class MerchandiseService
      * @param  array<int, array<string, mixed>>  $items
      * @return Collection<int, CatalogItem>
      */
-    public function upsertMany(Tenant $tenant, array $items): Collection
+    public function upsertMany(Tenant $tenant, array $items, ?string $stockAdjustmentId = null): Collection
     {
-        return DB::transaction(function () use ($tenant, $items): Collection {
+        return DB::transaction(function () use ($tenant, $items, $stockAdjustmentId): Collection {
             $attributes = $this->attributes($tenant);
             $category = Category::query()->firstOrCreate([
                 'tenant_code' => $tenant->codigo,
@@ -57,6 +57,7 @@ class MerchandiseService
                 $tenant,
                 $attributes,
                 $category,
+                $stockAdjustmentId,
                 &$reservedSlugs,
             ): CatalogItem {
                 $item = isset($data['id'])
@@ -101,7 +102,7 @@ class MerchandiseService
                     if ($variant === null) {
                         $this->createVariant($item, $itemAttributes, $variantData);
                     } else {
-                        $this->updateVariant($variant, $itemAttributes, $variantData, $index, $variantIndex);
+                        $this->updateVariant($variant, $itemAttributes, $variantData, $index, $variantIndex, $stockAdjustmentId);
                     }
                 }
 
@@ -342,6 +343,7 @@ class MerchandiseService
         array $data,
     ): void {
         $inventory = Inventory::query()->create(['real_stock' => $data['stock']]);
+        $inventory->recordInitialization();
         $variant = $item->variants()->create([
             'inventory_id' => $inventory->id,
             'precio' => $data['price'],
@@ -359,22 +361,16 @@ class MerchandiseService
         array $data,
         int $itemIndex,
         int $variantIndex,
+        ?string $stockAdjustmentId,
     ): void {
         $inventory = Inventory::query()
             ->whereKey($variant->inventory_id)
             ->lockForUpdate()
             ->firstOrFail();
 
-        if ($data['stock'] < $inventory->reserved_stock) {
-            throw ValidationException::withMessages([
-                "items.{$itemIndex}.variants.{$variantIndex}.stock" => [
-                    'El stock no puede ser menor que la cantidad actualmente reservada.',
-                ],
-            ]);
-        }
-
         $variant->update(['precio' => $data['price']]);
-        $inventory->update(['real_stock' => $data['stock']]);
+        $stockDifference = (int) ($data['stock_difference'] ?? ($data['stock'] - $inventory->availableStock()));
+        $inventory->adjustAvailableStock($stockDifference, idempotencyKey: $stockAdjustmentId);
         $this->syncDefinitions($variant, $itemAttributes, $data);
     }