Added command completions for give command

src/main/java/com/songoda/epicbuckets/EpicBuckets.java

@@ -2,6 +2,7 @@ package com.songoda.epicbuckets;
 
 import co.aikar.commands.BukkitCommandManager;
 import com.songoda.epicbuckets.command.CommandGenbucket;
+import com.songoda.epicbuckets.command.CommandTabbing;
 import com.songoda.epicbuckets.file.ConfigManager;
 import com.songoda.epicbuckets.genbucket.GenbucketManager;
 import com.songoda.epicbuckets.listener.GenbucketPlaceListener;
@@ -61,6 +62,7 @@ public class EpicBuckets extends ExtendedJavaPlugin {
         inventoryManager = new InventoryManager(this);
         inventoryManager.init();
 
+        CommandTabbing.registerCommandCompletions();
         commandManager.registerCommand(new CommandGenbucket());
 
         getServer().getPluginManager().registerEvents(new GenbucketPlaceListener(), this);

src/main/java/com/songoda/epicbuckets/command/CommandGenbucket.java

@@ -2,6 +2,7 @@ package com.songoda.epicbuckets.command;
 
 import co.aikar.commands.BaseCommand;
 import co.aikar.commands.annotation.*;
+import co.aikar.commands.contexts.OnlinePlayer;
 import com.songoda.epicbuckets.EpicBuckets;
 import com.songoda.epicbuckets.gui.GUIMain;
 import com.songoda.epicbuckets.gui.GUIPanel;
@@ -38,8 +39,9 @@ public class CommandGenbucket extends BaseCommand {
     }
 
     @Subcommand("give")
+    @CommandCompletion("@players @traits @genitems")
     @Description("Gives a genbucket to a player")
-    public void give(CommandSender sender, ) {
+    public void give(CommandSender sender, OnlinePlayer onlinePlayer, String trait, String genitem, @Optional int cost) {
         
     }
 

src/main/java/com/songoda/epicbuckets/command/CommandTabbing.java

@@ -3,13 +3,45 @@ package com.songoda.epicbuckets.command;
 import co.aikar.commands.BukkitCommandCompletionContext;
 import co.aikar.commands.CommandCompletions;
 import com.songoda.epicbuckets.EpicBuckets;
+import com.songoda.epicbuckets.shop.Shop;
+import com.songoda.epicbuckets.shop.SubShop;
+import org.bukkit.entity.Player;
+
+import java.util.ArrayList;
+import java.util.List;
 
 public class CommandTabbing {
 
     public static void registerCommandCompletions() {
         CommandCompletions<BukkitCommandCompletionContext> commandCompletions = EpicBuckets.getInstance().getCommandManager().getCommandCompletions();
 
-        commandCompletions.registerCompletion("")
+        commandCompletions.registerCompletion("traits", c -> {
+           if (c.getSender() instanceof Player) {
+               List<String> traits = new ArrayList<>();
+               for (Shop shop : EpicBuckets.getInstance().getShopManager().getShops()) {
+                   if (!traits.contains(shop.getTrait().name())) {
+                       traits.add(shop.getTrait().name());
+                   }
+               }
+               return traits;
+           }
+           return null;
+        });
+
+        commandCompletions.registerCompletion("genitems", c -> {
+            if (c.getSender() instanceof Player) {
+                List<String> genitems = new ArrayList<>();
+                for (Shop shop : EpicBuckets.getInstance().getShopManager().getShops()) {
+                    for (SubShop subShop : shop.getSubShops()) {
+                        if (!genitems.contains(subShop.getGenItem().getType().name())) {
+                            genitems.add(subShop.getGenItem().getType().name());
+                        }
+                    }
+                }
+                return genitems;
+            }
+            return null;
+        });
     }
 
 }