Correct MarketUtils methods.

quickshop-api/src/main/java/com/ghostchu/quickshop/api/shop/inventory/ShopInventory.java

@@ -75,6 +75,8 @@ public interface ShopInventory {
    */
   int getRemainingSpace();
 
+  CompletableFuture<Integer> getRemainingSpaceAsync();
+
   /**
    * Get shop remaining stock.
    *

quickshop-bukkit/src/main/java/com/ghostchu/quickshop/menu/browse/MarketUtils.java

@@ -33,6 +33,7 @@
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
+import java.util.concurrent.atomic.AtomicInteger;
 
 /**
  * MarketUtils - Utility class for market/browse operations Handles grouping shops by item,
@@ -63,7 +64,7 @@ public static List<MarketItemGroup> groupShopsByItem(@NotNull final List<Shop> s
 
     for(final Shop shop : shops) {
       MarketItemGroup matchingGroup = null;
-      List<MarketItemGroup> matGroups = groupsByMat.computeIfAbsent(shop.getItem().getType(), k->new ArrayList<>());
+      final List<MarketItemGroup> matGroups = groupsByMat.computeIfAbsent(shop.getItem().getType(), k->new ArrayList<>());
       // Find existing group that matches this shop's item
       for(final MarketItemGroup group : matGroups) {
         if(matcher.matches(group.getRepresentativeItem(), shop.getItem())) {
@@ -406,16 +407,18 @@ public static List<MarketItemGroup> processGroups(@NotNull final List<Shop> shop
   public static int getStockFromCache(@NotNull final Shop shop) {
 
     if(shop.isUnlimited()) {
+
       return -1;
     }
     try {
-      final ShopInventoryCountCache cache = QuickShop.getInstance().getShopManager()
-              .queryShopInventoryCacheInDatabase(shop).join();
-      final int stock = cache.getStock();
+      //final ShopInventoryCountCache cache = QuickShop.getInstance().getShopManager().queryShopInventoryCacheInDatabase(shop).join();
+      //final int stock = cache.getStock();
+      final int stock = shop.getRemainingStockAsync().join();
       // Return stock if available, otherwise return 0 for uninitialized cache
-      return stock >= 0? stock : 0;
+      return Math.max(stock, 0);
     } catch(final Exception e) {
       // Fallback to 0 if cache query fails
+      System.out.println("Error getting stock: " + e.getMessage());
       return 0;
     }
   }
@@ -434,11 +437,10 @@ public static int getSpaceFromCache(@NotNull final Shop shop) {
       return -1;
     }
     try {
-      final ShopInventoryCountCache cache = QuickShop.getInstance().getShopManager()
-              .queryShopInventoryCacheInDatabase(shop).join();
-      final int space = cache.getSpace();
+      //final ShopInventoryCountCache cache = QuickShop.getInstance().getShopManager().queryShopInventoryCacheInDatabase(shop).join();
+      final int space = shop.getRemainingSpaceAsync().join();
       // Return space if available, otherwise return 0 for uninitialized cache
-      return space >= 0? space : 0;
+      return Math.max(space, 0);
     } catch(final Exception e) {
       // Fallback to 0 if cache query fails
       return 0;

quickshop-bukkit/src/main/java/com/ghostchu/quickshop/menu/trade/MainPage.java

@@ -99,7 +99,7 @@ public void handle(final PageOpenCallback open) {
         final ItemStack shopItem = shop.get().getItem();
         final int amount = shopItem.getAmount();
         // Use cache to avoid Folia cross-region block access issues
-        final int stock = (shop.get().isBuying())? -1 : MarketUtils.getStockFromCache(shop.get());
+        final int stock = (shop.get().isBuying())? MarketUtils.getSpaceFromCache(shop.get()) : MarketUtils.getStockFromCache(shop.get());
         final String stockString = (shop.get().isUnlimited())? "Unlimited" : stock + "";
         final String priceFormatted = shop.get().format(shop.get().bukkitLocation().getWorld().getName(), shop.get().getCurrency());
 

quickshop-bukkit/src/main/java/com/ghostchu/quickshop/shop/ContainerShop.java

@@ -818,6 +818,34 @@ public int getRemainingSpace() {
     }
   }
 
+  @Override
+  public CompletableFuture<Integer> getRemainingSpaceAsync() {
+    if(this.unlimited) {
+      return CompletableFuture.completedFuture(-1);
+    }
+
+    if(Bukkit.getServer().isOwnedByCurrentRegion(location)) {
+
+      return CompletableFuture.completedFuture(getRemainingSpace());
+    }
+
+    final CompletableFuture<Integer> future = new CompletableFuture<>();
+
+    try {
+      QuickShop.folia().getScheduler().runAtLocation(this.location, task->{
+        try {
+          future.complete(getRemainingSpace());
+        } catch(final Throwable throwable) {
+          future.completeExceptionally(throwable);
+        }
+      });
+    } catch(final Throwable throwable) {
+      future.completeExceptionally(throwable);
+    }
+
+    return future;
+  }
+
   /**
    * Returns the number of items this shop has in stock.
    *
@@ -857,6 +885,7 @@ public CompletableFuture<Integer> getRemainingStockAsync() {
     }
 
     return future;
+
   }
 
   private int calculateRemainingStock() {