From dfe788c0ad3adfd1b0ac80c48f01b93d9db90384 Mon Sep 17 00:00:00 2001
From: PikaMug <2267126+PikaMug@users.noreply.github.com>
Date: Thu, 4 Jul 2024 06:08:26 -0400
Subject: [PATCH] Check available slots on craft, fixes #2245

---
 .../quests/listeners/BukkitItemListener.java    |  6 ++++++
 .../quests/util/BukkitInventoryUtil.java        | 17 +++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/core/src/main/java/me/pikamug/quests/listeners/BukkitItemListener.java b/core/src/main/java/me/pikamug/quests/listeners/BukkitItemListener.java
index e14c28b22..970bff119 100644
--- a/core/src/main/java/me/pikamug/quests/listeners/BukkitItemListener.java
+++ b/core/src/main/java/me/pikamug/quests/listeners/BukkitItemListener.java
@@ -14,6 +14,7 @@ import me.pikamug.quests.BukkitQuestsPlugin;
 import me.pikamug.quests.enums.ObjectiveType;
 import me.pikamug.quests.player.Quester;
 import me.pikamug.quests.quests.Quest;
+import me.pikamug.quests.util.BukkitInventoryUtil;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
@@ -53,6 +54,11 @@ public class BukkitItemListener implements Listener {
             final Player player = (Player) event.getWhoClicked();
             if (plugin.canUseQuests(player.getUniqueId())) {
                 final ItemStack craftedItem = getCraftedItem(event);
+                if (BukkitInventoryUtil.getEmptySlots(player)
+                        < craftedItem.getAmount() / craftedItem.getMaxStackSize()) {
+                    event.setCancelled(true);
+                    return;
+                }
                 final Quester quester = plugin.getQuester(player.getUniqueId());
                 final ObjectiveType type = ObjectiveType.CRAFT_ITEM;
                 final Set<String> dispatchedQuestIDs = new HashSet<>();
diff --git a/core/src/main/java/me/pikamug/quests/util/BukkitInventoryUtil.java b/core/src/main/java/me/pikamug/quests/util/BukkitInventoryUtil.java
index d9d1566a9..3f5922aaf 100644
--- a/core/src/main/java/me/pikamug/quests/util/BukkitInventoryUtil.java
+++ b/core/src/main/java/me/pikamug/quests/util/BukkitInventoryUtil.java
@@ -10,6 +10,7 @@
 
 package me.pikamug.quests.util;
 
+import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.EntityEquipment;
 import org.bukkit.inventory.Inventory;
@@ -158,4 +159,20 @@ public class BukkitInventoryUtil {
         }
         return false;
     }
+
+    /**
+     * Get number of empty inventory slots
+     *
+     * @param player Player to check
+     * @return number of empty slots
+     */
+    public static int getEmptySlots(final Player player) {
+        final ItemStack[] contents = player.getInventory().getContents();
+        int i = 0;
+        for (ItemStack item : contents)
+            if (item != null && item.getType() != Material.AIR) {
+                i++;
+            }
+        return 36 - i;
+    }
 }