fixed crafting amount

src/main/java/net/Indyuce/mmocore/experience/source/CraftItemExperienceSource.java

@@ -1,16 +1,18 @@
 package net.Indyuce.mmocore.experience.source;
 
 import io.lumine.mythic.lib.api.MMOLineConfig;
+import net.Indyuce.mmocore.api.player.PlayerData;
 import net.Indyuce.mmocore.experience.provider.ExperienceDispenser;
 import net.Indyuce.mmocore.experience.source.type.SpecificExperienceSource;
-import net.Indyuce.mmocore.api.player.PlayerData;
 import net.Indyuce.mmocore.manager.profession.ExperienceSourceManager;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
+import org.bukkit.event.inventory.ClickType;
 import org.bukkit.event.inventory.CraftItemEvent;
 import org.bukkit.event.inventory.InventoryAction;
+import org.bukkit.inventory.ItemStack;
 
 public class CraftItemExperienceSource extends SpecificExperienceSource<Material> {
     public final Material material;
@@ -29,10 +31,11 @@ public class CraftItemExperienceSource extends SpecificExperienceSource<Material
             public void a(CraftItemEvent event) {
                 if (event.getAction() == InventoryAction.NOTHING ||
                         event.getInventory().getResult() == null) return;
+
                 PlayerData data = PlayerData.get((Player) event.getWhoClicked());
                 for (CraftItemExperienceSource source : getSources())
                     if (source.matches(data, event.getInventory().getResult().getType()))
-                        source.giveExperience(data, event.getInventory().getResult().getAmount(), event.getInventory().getLocation());
+                        source.giveExperience(data, getAmountCrafted(event), event.getInventory().getLocation());
             }
         };
     }
@@ -41,4 +44,31 @@ public class CraftItemExperienceSource extends SpecificExperienceSource<Material
     public boolean matchesParameter(PlayerData player, Material obj) {
         return material == obj;
     }
+
+    /**
+     * Source:
+     * - https://www.spigotmc.org/threads/how-to-get-amount-of-item-crafted.377598/
+     * <p>
+     * The idea is to find the item with the lowest count which is basically
+     * the amount of items that are crafted. Minecraft uses the same calculation
+     *
+     * @return Amount of items crafted
+     */
+    private final int getAmountCrafted(CraftItemEvent event) {
+        ItemStack craftedItem = event.getInventory().getResult(); //Get result of recipe
+        ClickType clickType = event.getClick();
+
+        // No shift click
+        if (!clickType.isShiftClick())
+            return craftedItem.getAmount();
+
+        // Find lowest amount of all ingredients
+        int lowerAmount = craftedItem.getMaxStackSize() + 1000; //Set lower at recipe result max stack size + 1000 (or just highter max stacksize of reciped item)
+        for (ItemStack actualItem : event.getInventory().getContents()) //For each item in crafting inventory
+            if (!actualItem.getType().isAir() && lowerAmount > actualItem.getAmount() && !actualItem.getType().equals(craftedItem.getType())) //if slot is not air && lowerAmount is highter than this slot amount && it's not the recipe amount
+                lowerAmount = actualItem.getAmount(); //Set new lower amount
+
+        //Calculate the final amount : lowerAmount * craftedItem.getAmount
+        return lowerAmount * craftedItem.getAmount();
+    }
 }