Add packs list command.

src/main/java/com/dfsek/terra/command/PacksCommand.java

@@ -0,0 +1,56 @@
+package com.dfsek.terra.command;
+
+import com.dfsek.terra.config.base.ConfigPackTemplate;
+import com.dfsek.terra.config.lang.LangUtil;
+import com.dfsek.terra.registry.ConfigRegistry;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+import org.polydev.gaea.command.Command;
+
+import java.util.Collections;
+import java.util.List;
+
+public class PacksCommand extends Command {
+    public PacksCommand(Command parent) {
+        super(parent);
+    }
+
+    @Override
+    public String getName() {
+        return "packs";
+    }
+
+    @Override
+    public List<Command> getSubCommands() {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public boolean execute(@NotNull CommandSender commandSender, org.bukkit.command.@NotNull Command command, @NotNull String s, @NotNull String[] strings) {
+
+        ConfigRegistry registry = ConfigRegistry.getRegistry();
+
+        if(registry.entries().size() == 0) {
+            LangUtil.send("command.packs.none", commandSender);
+            return true;
+        }
+
+        LangUtil.send("command.packs.main", commandSender);
+        registry.entries().forEach(entry -> {
+            ConfigPackTemplate template = entry.getTemplate();
+            LangUtil.send("command.packs.pack", commandSender, template.getID(), template.getAuthor());
+        });
+
+        return true;
+    }
+
+    @Override
+    public int arguments() {
+        return 0;
+    }
+
+    @Override
+    public List<String> getTabCompletions(@NotNull CommandSender commandSender, @NotNull String s, @NotNull String[] strings) {
+        return Collections.emptyList();
+    }
+}

src/main/java/com/dfsek/terra/command/TerraCommand.java

@@ -25,7 +25,8 @@ public class TerraCommand extends Command {
             new ImageCommand(this),
             new GeometryCommand(this),
             new FixChunkCommand(this),
-            new VersionCommand(this));
+            new VersionCommand(this),
+            new PacksCommand(this));
 
     public TerraCommand(GaeaPlugin main) {
         super(main);

src/main/resources/lang/en_us.yml

@@ -28,6 +28,10 @@ command:
     invalid-radius: "Invalid radius: \"%s\""
     invalid: "Invalid Biome ID: \"%s\""
     in: "You are in \"%s\""
+  packs:
+    main: "Currently installed config packs:"
+    pack: " - %1$s by %2$s"
+    none: "No config packs are installed."
   ore:
     main-menu:
       - "---------------Terra/ore---------------"