feat(variants): enhance disableForSuspension method to manage variant replacements and inventory merging

app/Domains/Catalog/Services/VariantReplacementService.php

@@ -56,7 +56,7 @@ class VariantReplacementService
 
     public function disableForSuspension(EventDate $eventDate): void
     {
-        Variant::query()
+        $variants = Variant::query()
             ->whereNull('sales_disabled_at')
             ->whereNull('replaced_by_variant_id')
             ->where(function ($query) use ($eventDate): void {
@@ -64,7 +64,43 @@ class VariantReplacementService
                     ->orWhereHas('eventDates', fn ($eventDates) => $eventDates
                         ->where('event_dates.id', $eventDate->getKey()));
             })
-            ->update(['sales_disabled_at' => now()]);
+            ->with(['eventDates', 'eventDate', 'definitions', 'allAttachments'])
+            ->orderBy('id')
+            ->lockForUpdate()
+            ->get();
+
+        foreach ($variants as $variant) {
+            $remainingDateIds = $variant->selectedEventDates()
+                ->filter(fn (EventDate $date): bool => $date->suspended_at === null
+                    && $date->rescheduled_to_event_date_id === null)
+                ->pluck('id')
+                ->map(fn ($id): int => (int) $id)
+                ->unique()
+                ->sort()
+                ->values();
+
+            if ($remainingDateIds->isEmpty()) {
+                $variant->update(['sales_disabled_at' => now()]);
+
+                continue;
+            }
+
+            $replacement = $this->findEquivalent($variant, $remainingDateIds);
+            if ($replacement === null) {
+                $replacement = $this->cloneWithDates($variant, $remainingDateIds);
+            } else {
+                $this->mergeInventoryInto($variant, $replacement);
+            }
+
+            $variant->update([
+                'replaced_by_variant_id' => $replacement->getKey(),
+                'sales_disabled_at' => now(),
+            ]);
+
+            BundleComponent::query()
+                ->where('component_variant_id', $variant->getKey())
+                ->update(['component_variant_id' => $replacement->getKey()]);
+        }
     }
 
     /** @param Collection<int, int> $eventDateIds */
@@ -166,6 +202,52 @@ class VariantReplacementService
         return $replacementInventory;
     }
 
+    private function mergeInventoryInto(Variant $source, Variant $destination): void
+    {
+        if ($source->inventory_id === $destination->inventory_id) {
+            return;
+        }
+
+        $inventories = Inventory::query()
+            ->whereKey([$source->inventory_id, $destination->inventory_id])
+            ->orderBy('id')
+            ->lockForUpdate()
+            ->get()
+            ->keyBy('id');
+        $sourceInventory = $inventories->get($source->inventory_id);
+        $destinationInventory = $inventories->get($destination->inventory_id);
+        if ($sourceInventory === null || $destinationInventory === null) {
+            throw new \LogicException('No se encontró el inventario de una variante.');
+        }
+
+        $activeLines = StockReservationLine::query()
+            ->where('inventory_id', $source->inventory_id)
+            ->whereHas('reservation', fn ($reservation) => $reservation
+                ->where('status', StockReservation::STATUS_ACTIVE))
+            ->orderBy('id')
+            ->lockForUpdate()
+            ->get();
+        if ($sourceInventory->reserved_stock !== (int) $activeLines->sum('quantity')) {
+            throw new \LogicException('El inventario reservado de la variante es inconsistente.');
+        }
+
+        $destinationInventory->update([
+            'real_stock' => $destinationInventory->real_stock + $sourceInventory->real_stock,
+            'reserved_stock' => $destinationInventory->reserved_stock + $sourceInventory->reserved_stock,
+            'sold_units' => $destinationInventory->sold_units + $sourceInventory->sold_units,
+        ]);
+        if ($activeLines->isNotEmpty()) {
+            StockReservationLine::query()
+                ->whereKey($activeLines->modelKeys())
+                ->update(['inventory_id' => $destinationInventory->getKey()]);
+        }
+        $sourceInventory->update([
+            'real_stock' => 0,
+            'reserved_stock' => 0,
+            'sold_units' => 0,
+        ]);
+    }
+
     /** @return list<string> */
     private function definitionSignature(Variant $variant): array
     {