lucky draw system with inventory redo

src/main/java/me/night/nullvalkyrie/commands/BetaCommand.java

@@ -1,34 +1,24 @@
 package me.night.nullvalkyrie.commands;
 
-import me.night.nullvalkyrie.entities.miners.CryptoMiner;
+import me.night.nullvalkyrie.ui.inventory.LuckyDraw;
-import me.night.nullvalkyrie.enums.Items;
-import me.night.nullvalkyrie.util.RandomCollection;
-import org.bukkit.Material;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 
 import java.util.List;
 
 public class BetaCommand extends Command {
-    RandomCollection<String> randomCollection;
 
     public BetaCommand() {
         super("beta", new String[]{"b", "npc"}, "Beta", "");
-        randomCollection = new RandomCollection<>();
-        for (Items e : Items.values()) {
-            randomCollection.add(e.getWeight(), e.getName());
-        }
     }
 
     @Override
     public void onCommand(CommandSender sender, String[] args) {
         if (sender instanceof Player player) {
-//            String s = randomCollection.getRandom();
+
-//            if (s == null) System.out.println("You have got all rewards from the draw");
+//            CryptoMiner miner = new CryptoMiner(args[0], Material.DIAMOND_ORE, 1, 0.5, System.currentTimeMillis());
-//            System.out.println(s + " with the probability " + Math.round(randomCollection.getChance(s)));
+//            miner.spawn(player, "https://textures.minecraft.net/texture/c09cc3c75bd13c59602040b5970f30dbc76825c0e817da815a65d76ab0e82198");
-//            randomCollection.remove(s);
+            new LuckyDraw().UI(player);
-            CryptoMiner miner = new CryptoMiner(args[0], Material.DIAMOND_ORE, 1, 0.5, System.currentTimeMillis());
-            miner.spawn(player, "https://textures.minecraft.net/texture/c09cc3c75bd13c59602040b5970f30dbc76825c0e817da815a65d76ab0e82198");
         }
     }
 

src/main/java/me/night/nullvalkyrie/database/CustomWeaponsDataManager.java

@@ -40,19 +40,21 @@ public class CustomWeaponsDataManager {
                 for (String a : attributes.keySet()) attr.put(a, attributes.get(a));
                 Document pdc = (Document) doc.get("PDC");
                 HashMap<String, Object> pdcdata = new HashMap<>();
-                for (String i : pdc.keySet())
+                if (pdc != null)
-                    pdcdata.put(i, pdc.get(i));
+                    for (String a : pdc.keySet()) pdcdata.put(a, pdc.get(a));
                 Document recipe = (Document) doc.get("Recipes");
                 HashMap<String, Object> recipes = new HashMap<>();
-                Document ing = (Document) recipe.get("Ingredients");
+                if (recipe != null) {
-                HashMap<String, String> ingredients = new HashMap<>();
+                    Document ing = (Document) recipe.get("Ingredients");
-                for (String i : ing.keySet())
+                    HashMap<String, String> ingredients = new HashMap<>();
-                    ingredients.put(i, ing.getString(i));
+                    for (String i : ing.keySet())
-                List<String> shapes = new ArrayList<>();
+                        ingredients.put(i, ing.getString(i));
-                if (recipe.get("Shapes") != null) shapes.addAll((List<String>) recipe.get("Shapes"));
+                    List<String> shapes = new ArrayList<>();
-                recipes.put("Shape", shapes);
+                    if (recipe.get("Shapes") != null) shapes.addAll((List<String>) recipe.get("Shapes"));
-                recipes.put("Amount", recipe.getInteger("Amount"));
+                    recipes.put("Shape", shapes);
-                recipes.put("Ingredients", ingredients);
+                    recipes.put("Amount", recipe.getInteger("Amount"));
+                    recipes.put("Ingredients", ingredients);
+                }
                 item.put("Name", name);
                 item.put("Material", Material.matchMaterial(doc.getString("Material")));
                 item.put("Type", doc.getString("Type"));

src/main/java/me/night/nullvalkyrie/enums/Items.java

@@ -1,26 +1,40 @@
 package me.night.nullvalkyrie.enums;
 
+import org.bukkit.Material;
+
 public enum Items {
 
-    COAL("Coal", 27),
+    ETERNALSTARE("Eternal Stare", 29, Rarity.LEGENDARY, Material.COAL), // legendary charm
-    IRON("Iron", 23),
+    MORNINGTEA("Morning Tea", 28, Rarity.EPIC, Material.IRON_INGOT), // epic emote
-    GOLD("Gold", 20),
+    PARACHUTE("Parachute - Doomed Chorus", 11, Rarity.EPIC, Material.GOLD_INGOT), // epic parachute
-    LAPIS("Lapis", 14),
+    RALLYCAR("Rally Car - Doomed Chorus", 10, Rarity.EPIC, Material.REDSTONE), //epic backpack
-    REDSTONE("Redstone", 10),
+    WORLDAFLAME("World Aflame", 6.5, Rarity.LEGENDARY, Material.LAPIS_LAZULI), // legendary background
-    EMERALD("Emerald", 6),
+    MOLOTOVCOTAIL("Molotov Cotail - Soul Flame", 5.5, Rarity.EPIC, Material.COPPER_INGOT), // epic throwable
-    QUARTZ("Quartz", 4),
+    KATANA("Katana - Silent Echo", 4.67, Rarity.EPIC, Material.EMERALD), // epic melee
-    OBSIDIAN("Obsidian", 3),
+    DLQ33("DL Q33 - Doomed Chorus", 4, Rarity.EPIC, Material.QUARTZ), // epic gun
-    DIAMOND("Diamond", 2),
+    DAME("Dame - Shot Caller", 1.25, Rarity.EPIC, Material.DIAMOND), // character epic
-    NETHERITE("Netherite", 1);
+    KILO141("Kilo 141 - Demonsong", 0.08, Rarity.LEGENDARY, Material.NETHERITE_INGOT); // weapon legendary
 
     private final String name;
     private final double weight;
+    private final Rarity rarity;
+    private final Material material;
 
-    Items(String name, double weight) {
+
+    Items(String name, double weight, Rarity rarity, Material material) {
         this.name = name;
         this.weight = weight;
+        this.rarity = rarity;
+        this.material = material;
+    }
+    public static Items getByName(String name) {
+        for (Items item : Items.values()) {
+            if (item.getName().equalsIgnoreCase(name)) {
+                return item;
+            }
+        }
+        return null;
     }
-
     public String getName() {
         return name;
     }
@@ -28,4 +42,12 @@ public enum Items {
     public double getWeight() {
         return weight;
     }
+
+    public Rarity getRarity() {
+        return rarity;
+    }
+
+    public Material getMaterial() {
+        return material;
+    }
 }

src/main/java/me/night/nullvalkyrie/events/listeners/CustomItemEvents.java

@@ -88,7 +88,7 @@ public class CustomItemEvents implements Listener {
                     if (weaponMeta != null) {
                         PersistentDataContainer container = weaponMeta.getPersistentDataContainer();
                         NamespacedKey ammoKey = CustomItemManager.keys.get(name + ".ammo");
-                        int ammo = container.get(ammoKey, PersistentDataType.INTEGER);
+                        int ammo = container.get(ammoKey, PersistentDataType.INTEGER) != null ? container.get(ammoKey, PersistentDataType.INTEGER) : 0;
                         container.set(ammoKey, PersistentDataType.INTEGER, ammo - 1);
                         int max = container.get(CustomItemManager.keys.get(name + ".max"), PersistentDataType.INTEGER);
                         weapon.setItemMeta(weaponMeta);

src/main/java/me/night/nullvalkyrie/items/CustomItemManager.java

@@ -89,12 +89,15 @@ public class CustomItemManager {
         }
         item.setItemMeta(itemMeta);
         HashMap<String, Object> recipes = (HashMap<String, Object>) weapon.get("Recipes");
-        List<String> shapes = (List<String>) recipes.get("Shape");
+        if (recipes.get("Shape") != null) {
-        HashMap<String, String> ind = (HashMap<String, String>) recipes.get("Ingredients");
+            List<String> shapes = (List<String>) recipes.get("Shape");
-        HashMap<Character, Material> indgredients = new HashMap<>();
+            HashMap<String, String> ind = (HashMap<String, String>) recipes.get("Ingredients");
-        for (String i : ind.keySet())
+            HashMap<Character, Material> indgredients = new HashMap<>();
-            indgredients.put(i.charAt(0), Material.matchMaterial(ind.get(i)));
+            for (String i : ind.keySet())
-        setItemRecipe((String) weapon.get("Name"), item, shapes, indgredients, (int) recipes.get("Amount"));
+                indgredients.put(i.charAt(0), Material.matchMaterial(ind.get(i)));
+            setItemRecipe((String) weapon.get("Name"), item, shapes, indgredients, (int) recipes.get("Amount"));
+
+        }
         return item;
     }
 

src/main/java/me/night/nullvalkyrie/ui/inventory/GUIManager.java

@@ -0,0 +1,75 @@
+package me.night.nullvalkyrie.ui.inventory;
+
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+
+public abstract class GUIManager {
+    public static Inventory GUI;
+    private boolean close;
+
+    public abstract void UI(Player player);
+
+    public void init(int size, String title) {
+        GUI = Bukkit.createInventory(null, size, title);
+    }
+
+    public void setCloseButton(boolean boo) {
+        if (boo) {
+            close = true;
+            ItemStack close = new ItemStack(Material.BARRIER);
+            ItemMeta closemeta = close.getItemMeta();
+            if (closemeta != null) closemeta.setDisplayName(ChatColor.WHITE + "Close the menu");
+            close.setItemMeta(closemeta);
+            GUI.setItem(0, close);
+        } else close = false;
+    }
+
+    public void setFrame(boolean boo, Material... frame) {
+        if (boo) {
+            ItemStack frames = new ItemStack(frame[0]);
+            switch (GUI.getSize()) {
+                case 27 -> {
+                    if (close) {
+                        for (int i : new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26})
+                            GUI.setItem(i, frames);
+                    } else {
+                        for (int i : new int[]{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26})
+                            GUI.setItem(i, frames);
+                    }
+                }
+                case 36 -> {
+                    if (close) {
+                        for (int i : new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 17, 18, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35})
+                            GUI.setItem(i, frames);
+                    } else {
+                        for (int i : new int[]{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 17, 18, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35})
+                            GUI.setItem(i, frames);
+                    }
+                }
+                case 45 -> {
+                    if (close) {
+                        for (int i : new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 17, 18, 26, 27, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44})
+                            GUI.setItem(i, frames);
+                    } else {
+                        for (int i : new int[]{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 17, 18, 26, 27, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44})
+                            GUI.setItem(i, frames);
+                    }
+                }
+                case 54 -> {
+                    if (close) {
+                        for (int i : new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 17, 18, 26, 27, 35, 36, 44, 45, 46, 47, 48, 49, 50, 51 ,52, 53})
+                            GUI.setItem(i, frames);
+                    } else {
+                        for (int i : new int[]{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 17, 18, 26, 27, 35, 36, 44, 45, 46, 47, 48, 49, 50, 51 ,52, 53})
+                            GUI.setItem(i, frames);
+                    }
+                }
+            }
+        }
+    }
+}

src/main/java/me/night/nullvalkyrie/ui/inventory/InventoryListener.java

@@ -1,16 +1,34 @@
 package me.night.nullvalkyrie.ui.inventory;
 
+import me.night.nullvalkyrie.Main;
+import me.night.nullvalkyrie.enums.Items;
+import me.night.nullvalkyrie.util.RandomCollection;
 import org.bukkit.ChatColor;
+import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.inventory.InventoryClickEvent;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+import org.bukkit.scheduler.BukkitRunnable;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
 
 public class InventoryListener implements Listener {
-
+    RandomCollection<String> randomCollection;
+    public InventoryListener() {
+        randomCollection = new RandomCollection<>();
+        for (Items e : Items.values()) {
+            randomCollection.add(e.getWeight(), e.getName());
+        }
+    }
     @EventHandler
     public void onClick(InventoryClickEvent e) {
-        if (e.getInventory().equals(Menu.GUI) && e.getCurrentItem() != null) {
+        if (e.getCurrentItem() == null) return;
+        if (e.getView().getTitle().equals(Menu.title)) {
             e.setCancelled(true);
             Player player = (Player) e.getWhoClicked();
             switch (e.getRawSlot()) {
@@ -32,12 +50,108 @@ public class InventoryListener implements Listener {
             }
             player.closeInventory();
         }
-        if (e.getInventory().equals(Shop.GUI) && e.getCurrentItem() != null) {
+        if (e.getView().getTitle().equals(Shop.title)) {
             e.setCancelled(true);
             Player player = (Player) e.getWhoClicked();
             if (e.getRawSlot() == 0) {
                 player.closeInventory();
             }
         }
+        if (e.getView().getTitle().equals(LuckyDraw.title)) {
+            e.setCancelled(true);
+            Player player = (Player) e.getWhoClicked();
+            if (e.getRawSlot() == 0) {
+                player.closeInventory();
+            } else if (e.getRawSlot() == 22) {
+                List<String> colors = List.of("WHITE", "ORANGE", "MAGENTA", "LIGHT_BLUE", "YELLOW", "LIME", "PINK", "GRAY", "LIGHT_GRAY", "CYAN", "PURPLE", "BLUE", "BROWN", "GREEN", "RED", "BLACK");
+                List<String> slot1 = new ArrayList<>(colors);
+                List<String> slot2 = new ArrayList<>(colors);
+                List<String> slot3 = new ArrayList<>(colors);
+                List<String> slot4 = new ArrayList<>(colors);
+                List<String> slot5 = new ArrayList<>(colors);
+                List<String> slot6 = new ArrayList<>(colors);
+                List<String> slot7 = new ArrayList<>(colors);
+                List<String> slot8 = new ArrayList<>(colors);
+                Collections.shuffle(slot1);
+                Collections.shuffle(slot2);
+                Collections.shuffle(slot3);
+                Collections.shuffle(slot4);
+                Collections.shuffle(slot5);
+                Collections.shuffle(slot6);
+                Collections.shuffle(slot7);
+                Collections.shuffle(slot8);
+                int[] slots = new int[]{11, 13, 15, 20, 24, 29, 31, 33};
+                new BukkitRunnable() {
+                    int i = 0;
+                    int ii = 0;
+                    int time = 0;
+                    @Override
+                    public void run() {
+                        if (colors.size() - 1 <= i) i = 0;
+                        if (ii == 8) ii = 0;
+                        if (time == 20) {
+                            cancel();
+                            return;
+                        }
+                        for (int slot : slots) {
+                            if (slot == 11) {
+                                ItemStack item = new ItemStack(Material.valueOf(slot1.get(i) + "_STAINED_GLASS_PANE"), 1);
+                                LuckyDraw.GUI.setItem(slot, item);
+                            }
+                            if (slot == 13) {
+                                ItemStack item = new ItemStack(Material.valueOf(slot2.get(i) + "_STAINED_GLASS_PANE"), 1);
+                                LuckyDraw.GUI.setItem(slot, item);
+                            }
+                            if (slot == 15) {
+                                ItemStack item = new ItemStack(Material.valueOf(slot3.get(i) + "_STAINED_GLASS_PANE"), 1);
+                                LuckyDraw.GUI.setItem(slot, item);
+                            }
+                            if (slot == 20) {
+                                ItemStack item = new ItemStack(Material.valueOf(slot4.get(i) + "_STAINED_GLASS_PANE"), 1);
+                                LuckyDraw.GUI.setItem(slot, item);
+                            }
+                            if (slot == 24) {
+                                ItemStack item = new ItemStack(Material.valueOf(slot5.get(i) + "_STAINED_GLASS_PANE"), 1);
+                                LuckyDraw.GUI.setItem(slot, item);
+                            }
+                            if (slot == 29) {
+                                ItemStack item = new ItemStack(Material.valueOf(slot6.get(i) + "_STAINED_GLASS_PANE"), 1);
+                                LuckyDraw.GUI.setItem(slot, item);
+                            }
+                            if (slot == 31) {
+                                ItemStack item = new ItemStack(Material.valueOf(slot7.get(i) + "_STAINED_GLASS_PANE"), 1);
+                                LuckyDraw.GUI.setItem(slot, item);
+                            }
+                            if (slot == 33) {
+                                ItemStack item = new ItemStack(Material.valueOf(slot8.get(i) + "_STAINED_GLASS_PANE"), 1);
+                                LuckyDraw.GUI.setItem(slot, item);
+                            }
+                        }
+                        i++;
+                        ii++;
+                        time++;
+                    }
+                }.runTaskTimer(Main.getPlugin(Main.class), 1L, 5L);
+                new BukkitRunnable() {
+                    @Override
+                    public void run() {
+                        for (int slot : slots) {
+                            LuckyDraw.GUI.setItem(slot, new ItemStack(Material.AIR));
+                        }
+                        String s = randomCollection.getRandom();
+                        randomCollection.remove(s);
+                        Items it = Items.getByName(s);
+                        ItemStack item = new ItemStack(it.getMaterial(), 1);
+                        ItemMeta meta = item.getItemMeta();
+                        if (meta == null) return;
+                        meta.setDisplayName(ChatColor.GOLD + it.getName());
+                        meta.setLore(List.of(it.getRarity().getDisplay()));
+                        item.setItemMeta(meta);
+                        player.getInventory().addItem(item);
+                    }
+                }.runTaskLater(Main.getPlugin(Main.class), 5L * 20L);
+
+            }
+        }
     }
 }

src/main/java/me/night/nullvalkyrie/ui/inventory/LuckyDraw.java

@@ -0,0 +1,39 @@
+package me.night.nullvalkyrie.ui.inventory;
+
+import me.night.nullvalkyrie.enums.Items;
+import org.bukkit.ChatColor;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+
+import java.util.List;
+
+public class LuckyDraw extends GUIManager {
+    public static final String title = ChatColor.DARK_BLUE.toString() + ChatColor.BOLD + "X Lucky Draw";
+    @Override
+    public void UI(Player player) {
+        init(45, title);
+        setCloseButton(true);
+        setFrame(true, Material.BLUE_STAINED_GLASS_PANE);
+        int[] slots = new int[]{10, 12, 14, 16, 28, 30, 32, 34, 19, 25};
+        int count = 0;
+        for (Items name : Items.values()) {
+            ItemStack item = new ItemStack(name.getMaterial());
+            ItemMeta meta = item.getItemMeta();
+            if (meta == null) return;
+            meta.setDisplayName(ChatColor.GOLD + name.getName());
+            meta.setLore(List.of(name.getRarity().getDisplay()));
+            item.setItemMeta(meta);
+            GUI.setItem(slots[count], item);
+            count++;
+        }
+        ItemStack roll = new ItemStack(Material.ARROW);
+        ItemMeta meta = roll.getItemMeta();
+        if (meta == null) return;
+        meta.setLore(List.of("Press to roll!"));
+        roll.setItemMeta(meta);
+        GUI.setItem(22, roll);
+        player.openInventory(GUI);
+    }
+}

src/main/java/me/night/nullvalkyrie/ui/inventory/Menu.java

@@ -1,23 +1,23 @@
 package me.night.nullvalkyrie.ui.inventory;
 
-import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
-import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.ItemMeta;
 
 import java.util.Arrays;
 
-public class Menu {
+public class Menu extends GUIManager {
-    public static Inventory GUI;
+    public static final String title = ChatColor.DARK_BLUE.toString() + ChatColor.BOLD + "Valkyrie Menu";
-
+    @Override
     public void UI(Player player) {
-        GUI = Bukkit.createInventory(player, 45, ChatColor.DARK_BLUE.toString() + ChatColor.BOLD + "Valkyrie Menu");
+        init(45, title);
-
+        setCloseButton(true);
+        setFrame(true, Material.BLUE_STAINED_GLASS_PANE);
         ItemStack KYS = new ItemStack(Material.WOODEN_SWORD);
         ItemMeta KYSmeta = KYS.getItemMeta();
+        if (KYSmeta == null) return;
         KYSmeta.setDisplayName(ChatColor.RED + "KILL YOURSELF WHEN???");
         KYSmeta.setLore(Arrays.asList(ChatColor.GRAY + "KYS", ChatColor.WHITE.toString() + ChatColor.BOLD + "COMMON"));
         KYS.setItemMeta(KYSmeta);
@@ -25,6 +25,7 @@ public class Menu {
 
         ItemStack home = new ItemStack(Material.MAP);
         ItemMeta homemeta = home.getItemMeta();
+        if (homemeta == null) return;
         homemeta.setDisplayName(ChatColor.BLUE + "Teleport to home");
         homemeta.setLore(Arrays.asList(ChatColor.GRAY + "Click to teleport back to home", ChatColor.WHITE.toString() + ChatColor.BOLD + "COMMON"));
         home.setItemMeta(homemeta);
@@ -32,22 +33,12 @@ public class Menu {
 
         ItemStack chest = new ItemStack(Material.ENDER_CHEST);
         ItemMeta chestmeta = chest.getItemMeta();
+        if (chestmeta == null) return;
         chestmeta.setDisplayName(ChatColor.GREEN + "Open your chest");
         chestmeta.setLore(Arrays.asList(ChatColor.GRAY + "Click to open the chest", ChatColor.WHITE.toString() + ChatColor.BOLD + "COMMON"));
         chest.setItemMeta(chestmeta);
         GUI.setItem(24, chest);
 
-        ItemStack close = new ItemStack(Material.BARRIER);
-        ItemMeta closemeta = close.getItemMeta();
-        closemeta.setDisplayName(ChatColor.WHITE + "Close the menu");
-        closemeta.setLore(Arrays.asList(ChatColor.GRAY + "Close the menu", ChatColor.WHITE.toString() + ChatColor.BOLD + "COMMON"));
-        close.setItemMeta(closemeta);
-        GUI.setItem(0, close);
-
-        ItemStack frame = new ItemStack(Material.BLUE_STAINED_GLASS_PANE);
-        for (int i : new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 17, 18, 26, 27, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44})
-            GUI.setItem(i, frame);
-
         player.openInventory(GUI);
     }
 }

src/main/java/me/night/nullvalkyrie/ui/inventory/Miner.java

@@ -2,11 +2,9 @@ package me.night.nullvalkyrie.ui.inventory;
 
 import me.night.nullvalkyrie.database.MinerDataManager;
 import me.night.nullvalkyrie.entities.miners.CryptoMiner;
-import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
-import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.ItemMeta;
 
@@ -15,35 +13,30 @@ import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
 
-public class Miner {
+public class Miner extends GUIManager {
-    public static Inventory GUI;
+    public static String title = ChatColor.DARK_AQUA + "Crypto Miners";
-
+    @Override
     public void UI(Player player) {
-        GUI = Bukkit.createInventory(null, 45, ChatColor.DARK_AQUA + "Crypto Miners");
+        init(45, title);
-        ItemStack frame = new ItemStack(Material.BLUE_STAINED_GLASS_PANE);
+        setCloseButton(true);
-        for (int i : new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 17, 18, 26, 27, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44}) {
+        setFrame(true, Material.BLUE_STAINED_GLASS_PANE);
-            GUI.setItem(i, frame);
-        }
-        ItemStack close = new ItemStack(Material.BARRIER);
-        ItemMeta closemeta = close.getItemMeta();
-        if (closemeta != null) closemeta.setDisplayName(ChatColor.WHITE + "Close the menu");
-        close.setItemMeta(closemeta);
-        GUI.setItem(0, close);
         int[] a = new int[]{10, 11, 12, 13, 14, 15, 16, 19, 20, 21, 22, 23, 24, 25, 28, 29, 30, 31, 32, 33, 34};
         int counter = 0;
         for (CryptoMiner c : MinerDataManager.getMiners().values()) {
             if (counter <= 20) {
                 ItemStack item = new ItemStack(c.getType());
                 ItemMeta itemMeta = item.getItemMeta();
-                itemMeta.setDisplayName(c.getName());
+                if (itemMeta != null) {
-                List<String> lore = new ArrayList<>();
+                    itemMeta.setDisplayName(c.getName());
-                lore.add("Level: " + c.getLevel());
+                    List<String> lore = new ArrayList<>();
-                lore.add("Rate: " + c.getRate());
+                    lore.add("Level: " + c.getLevel());
-                lore.add("Last Claim: " + new SimpleDateFormat("d MMM yyyy HH:mm:ss").format(new Date(c.getLastclaim())));
+                    lore.add("Rate: " + c.getRate());
-                itemMeta.setLore(lore);
+                    lore.add("Last Claim: " + new SimpleDateFormat("d MMM yyyy HH:mm:ss").format(new Date(c.getLastclaim())));
-                item.setItemMeta(itemMeta);
+                    itemMeta.setLore(lore);
-                GUI.setItem(a[counter], item);
+                    item.setItemMeta(itemMeta);
-                counter++;
+                    GUI.setItem(a[counter], item);
+                    counter++;
+                }
             }
             player.openInventory(GUI);
         }

src/main/java/me/night/nullvalkyrie/ui/inventory/Shop.java

@@ -2,30 +2,23 @@ package me.night.nullvalkyrie.ui.inventory;
 
 import me.night.nullvalkyrie.database.ShopDataManager;
 import me.night.nullvalkyrie.items.CustomItemManager;
-import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
-import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.ItemMeta;
 
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 
-public class Shop {
+public class Shop extends GUIManager {
-    public static Inventory GUI;
+    public static final String title = ChatColor.GREEN + "7-Eleven 24/7";
-
+    @Override
     public void UI(Player player) {
-        GUI = Bukkit.createInventory(null, 54, ChatColor.GREEN + "7-Eleven 24/7");
+        init(54, title);
-        ItemStack frame = new ItemStack(Material.BLUE_STAINED_GLASS_PANE);
+        setCloseButton(true);
-        for (int i : new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 17, 18, 26, 27, 35, 36, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53})
+        setFrame(true, Material.GREEN_STAINED_GLASS_PANE);
-            GUI.setItem(i, frame);
-        ItemStack close = new ItemStack(Material.BARRIER);
-        ItemMeta closemeta = close.getItemMeta();
-        if (closemeta != null) closemeta.setDisplayName(ChatColor.WHITE + "Close the menu");
-        close.setItemMeta(closemeta);
-        GUI.setItem(0, close);
         HashMap<String, Integer> list = ShopDataManager.getItems();
         int[] a = new int[]{10, 11, 12, 13, 14, 15, 16, 19, 20, 21, 22, 23, 24, 25, 28, 29, 30, 31, 32, 33, 34, 37, 38, 39, 40, 41, 42, 43, 44};
         int counter = 0;
@@ -33,7 +26,8 @@ public class Shop {
             if (counter <= 20) {
                 ItemStack item = CustomItemManager.produceItem(c).clone();
                 ItemMeta itemMeta = item.getItemMeta();
-                List<String> lore = itemMeta.getLore();
+                if (itemMeta == null) return;
+                List<String> lore = itemMeta.getLore() == null ? new ArrayList<>() : itemMeta.getLore();
                 lore.add("Price (BIN): " + list.get(c));
                 itemMeta.setLore(lore);
                 item.setItemMeta(itemMeta);