Added first iteration of Hypixel API integration

- /moo stalk <player> to get online status of a player

12 files changed, 283 insertions, 12 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9132a76..f3ca6a2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,8 +3,10 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
-## 1.8.9-0.3.0 - unreleased
+## [1.8.9-0.3.0] - 28.03.2020
 ### Added
+- Added first iteration of Hypixel API integration:
+  - `/moo stalk <player>`: Get info about player's status
 - `/moo nameChangeCheck`: Force a scan for changed names of best friends
 
 ### Changed
@@ -33,5 +35,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 *Note:* The 'best friends' list is currently available via <kbd>ESC</kbd> > Mod Options > Cowmoonication > Config > bestFriends.
 
+[1.8.9-0.3.0]: https://github.com/cow-mc/Cowmoonication/compare/v1.8.9-0.2.0...v1.8.9-0.3.0
 [1.8.9-0.2.0]: https://github.com/cow-mc/Cowmoonication/compare/v0.1...v1.8.9-0.2.0
 [0.1]: https://github.com/cow-mc/Cowmoonication/releases/tag/v0.1
diff --git a/README.md b/README.md
index 86b43c8..8474a8f 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@ A client-side only Forge mod by [Cow](https://namemc.com/profile/Cow) providing
 |-------------------------------------------------------------------------|-----------------------------------------|
 | Toggle to hide all join/leave notifications                             | `/moo toggle`                           |
 | 'Best friends' list to limit the amount of join and leave notifications | `/moo add/remove/list`                  |
+| Stalk a player (check online status, current game, ...)                 | `/moo stalk`                            |
 | Change guiScale to any value                                            | `/moo guiscale [newValue]`              |
 | Auto-replace `/r` with `/w <latest username>`                           | `/r `                                   |
 | Copy chat components                                                    | <kbd>ALT</kbd> + <kbd>right click</kbd> |
diff --git a/build.gradle b/build.gradle
index f108a60..c4e1102 100644
--- a/build.gradle
+++ b/build.gradle
@@ -20,7 +20,7 @@ plugins {
     id "net.minecraftforge.gradle.forge" version "2.0.2"
 }
 */
-version = "1.8.9-0.2.0"
+version = "1.8.9-0.3.0"
 group= "eu.olli.cowmoonication" // http://maven.apache.org/guides/mini/guide-naming-conventions.html
 archivesBaseName = "Cowmoonication"
 
diff --git a/src/main/java/eu/olli/cowmoonication/Cowmoonication.java b/src/main/java/eu/olli/cowmoonication/Cowmoonication.java
index 2b46e71..3f0ab44 100644
--- a/src/main/java/eu/olli/cowmoonication/Cowmoonication.java
+++ b/src/main/java/eu/olli/cowmoonication/Cowmoonication.java
@@ -25,7 +25,7 @@ import java.io.File;
         updateJSON = "https://raw.githubusercontent.com/cow-mc/Cowmoonication/master/update.json")
 public class Cowmoonication {
     public static final String MODID = "cowmoonication";
-    public static final String VERSION = "1.8.9-0.2.0";
+    public static final String VERSION = "1.8.9-0.3.0";
     public static final String MODNAME = "Cowmoonication";
     private File modsDir;
     private MooConfig config;
diff --git a/src/main/java/eu/olli/cowmoonication/command/MooCommand.java b/src/main/java/eu/olli/cowmoonication/command/MooCommand.java
index 22d510a..e933c30 100644
--- a/src/main/java/eu/olli/cowmoonication/command/MooCommand.java
+++ b/src/main/java/eu/olli/cowmoonication/command/MooCommand.java
@@ -3,6 +3,9 @@ package eu.olli.cowmoonication.command;
 import eu.olli.cowmoonication.Cowmoonication;
 import eu.olli.cowmoonication.config.MooConfig;
 import eu.olli.cowmoonication.config.MooGuiConfig;
+import eu.olli.cowmoonication.friends.Friend;
+import eu.olli.cowmoonication.util.ApiUtils;
+import eu.olli.cowmoonication.util.HyStalking;
 import eu.olli.cowmoonication.util.TickDelay;
 import eu.olli.cowmoonication.util.Utils;
 import net.minecraft.client.Minecraft;
@@ -33,7 +36,15 @@ public class MooCommand extends CommandBase {
             return;
         }
         // sub commands: friends
-        if (args.length == 2 && args[0].equalsIgnoreCase("add")) {
+        if (args[0].equalsIgnoreCase("stalk")) {
+            if (args.length != 2) {
+                main.getChatHelper().sendMessage(EnumChatFormatting.RED, "Usage: /" + getCommandName() + " stalk <playerName>");
+            } else if (!Utils.isValidMcName(args[1])) {
+                main.getChatHelper().sendMessage(EnumChatFormatting.RED, "\"" + args[1] + "\" is not a valid player name.");
+            } else {
+                handleStalking(args[1]);
+            }
+        } else if (args.length == 2 && args[0].equalsIgnoreCase("add")) {
             handleBestFriendAdd(args[1]);
         } else if (args.length == 2 && args[0].equalsIgnoreCase("remove")) {
             handleBestFriendRemove(args[1]);
@@ -58,6 +69,8 @@ public class MooCommand extends CommandBase {
                 Minecraft.getMinecraft().gameSettings.guiScale = scale;
                 main.getChatHelper().sendMessage(EnumChatFormatting.GREEN, "\u2714 New GUI scale: " + EnumChatFormatting.DARK_GREEN + scale + EnumChatFormatting.GREEN + " (previous: " + EnumChatFormatting.DARK_GREEN + currentGuiScale + EnumChatFormatting.GREEN + ")");
             }
+        } else if (args[0].equalsIgnoreCase("apikey")) {
+            handleApiKey(args);
         }
         // sub-commands: update mod
         else if (args[0].equalsIgnoreCase("update")) {
@@ -101,6 +114,75 @@ public class MooCommand extends CommandBase {
         }
     }
 
+    private void handleApiKey(String[] args) {
+        if (args.length == 1) {
+            String firstSentence;
+            EnumChatFormatting color;
+            EnumChatFormatting colorSecondary;
+            if (Utils.isValidUuid(MooConfig.moo)) {
+                firstSentence = "You already set your Hypixel API key.";
+                color = EnumChatFormatting.GREEN;
+                colorSecondary = EnumChatFormatting.DARK_GREEN;
+            } else {
+                firstSentence = "You haven't set your Hypixel API key yet.";
+                color = EnumChatFormatting.RED;
+                colorSecondary = EnumChatFormatting.DARK_RED;
+            }
+            main.getChatHelper().sendMessage(color, firstSentence + " Use " + colorSecondary + "/api new" + color + " to request a new API key from Hypixel or use " + colorSecondary + "/" + this.getCommandName() + " apikey <key>" + color + " to manually set your existing API key.");
+        } else {
+            String key = args[1];
+            if (Utils.isValidUuid(key)) {
+                MooConfig.moo = key;
+                main.getConfig().syncFromFields();
+                main.getChatHelper().sendMessage(EnumChatFormatting.GREEN, "Updated API key!");
+            } else {
+                main.getChatHelper().sendMessage(EnumChatFormatting.RED, "That doesn't look like a valid API key...");
+            }
+        }
+    }
+
+    private void handleStalking(String playerName) {
+        if (!Utils.isValidUuid(MooConfig.moo)) {
+            main.getChatHelper().sendMessage(EnumChatFormatting.RED, "You haven't set your Hypixel API key yet. Use " + EnumChatFormatting.DARK_RED + "/api new" + EnumChatFormatting.RED + " to request a new API key from Hypixel or use " + EnumChatFormatting.DARK_RED + "/" + this.getCommandName() + " apikey <key>" + EnumChatFormatting.RED + " to manually set your existing API key.");
+            return;
+        }
+        main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, "Stalking " + EnumChatFormatting.GOLD + playerName + EnumChatFormatting.YELLOW + ". This may take a few seconds.");
+        boolean isBestFriend = main.getFriends().isBestFriend(playerName, true);
+        if (isBestFriend) {
+            Friend stalkedPlayer = main.getFriends().getBestFriend(playerName);
+            // we have the uuid already, so stalk the player
+            stalkPlayer(stalkedPlayer);
+        } else {
+            // fetch player uuid
+            ApiUtils.fetchFriendData(playerName, stalkedPlayer -> {
+                if (stalkedPlayer == null) {
+                    main.getChatHelper().sendMessage(EnumChatFormatting.RED, "Sorry, could contact Mojang's API and thus couldn't stalk " + EnumChatFormatting.DARK_RED + playerName);
+                } else if (stalkedPlayer.equals(Friend.FRIEND_NOT_FOUND)) {
+                    main.getChatHelper().sendMessage(EnumChatFormatting.RED, "There is no player with the name " + EnumChatFormatting.DARK_RED + playerName + EnumChatFormatting.RED + ".");
+                } else {
+                    // ... then stalk the player
+                    stalkPlayer(stalkedPlayer);
+                }
+            });
+        }
+    }
+
+    private void stalkPlayer(Friend stalkedPlayer) {
+        ApiUtils.fetchPlayerStatus(stalkedPlayer, hyStalking -> {
+            if (hyStalking != null && hyStalking.isSuccess()) {
+                HyStalking.HySession session = hyStalking.getSession();
+                if (session.isOnline()) {
+                    main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, EnumChatFormatting.GOLD + stalkedPlayer.getName() + EnumChatFormatting.YELLOW + " is currently playing " + session.getGameType() + ": " + session.getMode() + (session.getMap() != null ? " (Map: " + session.getMap() + ")" : ""));
+                } else {
+                    main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, EnumChatFormatting.GOLD + stalkedPlayer.getName() + EnumChatFormatting.YELLOW + " is currently " + EnumChatFormatting.RED + "offline" + EnumChatFormatting.YELLOW + " (or deactivated API access).");
+                }
+            } else {
+                String cause = (hyStalking != null) ? hyStalking.getCause() : null;
+                main.getChatHelper().sendMessage(EnumChatFormatting.RED, "Something went wrong contacting the Hypixel API. Couldn't stalk " + EnumChatFormatting.DARK_RED + stalkedPlayer.getName() + EnumChatFormatting.RED + (cause != null ? " (Reason: " + EnumChatFormatting.DARK_RED + cause + EnumChatFormatting.RED + ")" : "") + ".");
+            }
+        });
+    }
+
     private void handleBestFriendAdd(String username) {
         if (!Utils.isValidMcName(username)) {
             main.getChatHelper().sendMessage(EnumChatFormatting.RED, EnumChatFormatting.DARK_RED + username + EnumChatFormatting.RED + "? This... doesn't look like a valid username.");
@@ -147,6 +229,7 @@ public class MooCommand extends CommandBase {
     public String getCommandUsage(ICommandSender sender) {
         IChatComponent usage = new ChatComponentText("\u279C Cowmoonication commands:").setChatStyle(new ChatStyle().setColor(EnumChatFormatting.GOLD).setBold(true))
                 .appendSibling(createCmdHelpSection(1, "Friends"))
+                .appendSibling(createCmdHelpEntry("stalk", "Get info of player's status"))
                 .appendSibling(createCmdHelpEntry("add", "Add best friends"))
                 .appendSibling(createCmdHelpEntry("remove", "Remove best friends"))
                 .appendSibling(createCmdHelpEntry("list", "View list of best friends"))
@@ -187,8 +270,8 @@ public class MooCommand extends CommandBase {
     public List<String> addTabCompletionOptions(ICommandSender sender, String[] args, BlockPos pos) {
         if (args.length == 1) {
             return getListOfStringsMatchingLastWord(args,
-                    /* friends */  "add", "remove", "list", "nameChangeCheck", "toggle",
-                    /* miscellaneous */ "guiscale", "config",
+                    /* friends */  "stalk", "add", "remove", "list", "nameChangeCheck", "toggle",
+                    /* miscellaneous */ "config", "guiscale", "apikey",
                     /* update mod */ "update", "updateHelp", "version", "folder",
                     /* help */ "help");
         }
diff --git a/src/main/java/eu/olli/cowmoonication/config/MooConfig.java b/src/main/java/eu/olli/cowmoonication/config/MooConfig.java
index d13758c..73e8bbc 100644
--- a/src/main/java/eu/olli/cowmoonication/config/MooConfig.java
+++ b/src/main/java/eu/olli/cowmoonication/config/MooConfig.java
@@ -1,6 +1,7 @@
 package eu.olli.cowmoonication.config;
 
 import eu.olli.cowmoonication.Cowmoonication;
+import eu.olli.cowmoonication.util.Utils;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.common.config.Configuration;
 import net.minecraftforge.common.config.Property;
@@ -14,6 +15,7 @@ import java.util.List;
 public class MooConfig {
     public static boolean doUpdateCheck;
     public static boolean filterFriendNotifications;
+    public static String moo;
     private static Configuration cfg = null;
 
     public MooConfig(Configuration configuration) {
@@ -47,7 +49,7 @@ public class MooConfig {
     /**
      * Save the Configuration variables (fields) to disk
      */
-    private void syncFromFields() {
+    public void syncFromFields() {
         syncConfig(false, false);
     }
 
@@ -71,18 +73,25 @@ public class MooConfig {
         final boolean FILTER_FRIEND_NOTIFICATIONS = true;
         Property propFilterFriendNotify = cfg.get(Configuration.CATEGORY_CLIENT, "filterFriendNotifications", FILTER_FRIEND_NOTIFICATIONS, "Set to false to receive all login/logout messages, set to true to only get notifications of 'best friends' joining/leaving");
 
+        final String MOO = "";
+        Property propMoo = cfg.get(Configuration.CATEGORY_CLIENT, "moo", MOO, "The answer to life the universe and everything. Don't edit this entry manually!", Utils.VALID_UUID_PATTERN);
+        propMoo.setShowInGui(false);
+
         List<String> propOrderGeneral = new ArrayList<>();
         propOrderGeneral.add(propDoUpdateCheck.getName());
         propOrderGeneral.add(propFilterFriendNotify.getName());
+        propOrderGeneral.add(propMoo.getName());
         cfg.setCategoryPropertyOrder(Configuration.CATEGORY_CLIENT, propOrderGeneral);
 
         if (readFieldsFromConfig) {
             doUpdateCheck = propDoUpdateCheck.getBoolean(DO_UPDATE_CHECK);
             filterFriendNotifications = propFilterFriendNotify.getBoolean(FILTER_FRIEND_NOTIFICATIONS);
+            moo = propMoo.getString();
         }
 
         propDoUpdateCheck.set(doUpdateCheck);
         propFilterFriendNotify.set(filterFriendNotifications);
+        propMoo.set(moo);
 
         if (cfg.hasChanged()) {
             cfg.save();
diff --git a/src/main/java/eu/olli/cowmoonication/friends/Friends.java b/src/main/java/eu/olli/cowmoonication/friends/Friends.java
index e37b4a4..8c29d16 100644
--- a/src/main/java/eu/olli/cowmoonication/friends/Friends.java
+++ b/src/main/java/eu/olli/cowmoonication/friends/Friends.java
@@ -80,6 +80,10 @@ public class Friends {
         return bestFriends.stream().map(Friend::getName).collect(Collectors.toCollection(TreeSet::new));
     }
 
+    public Friend getBestFriend(String name) {
+        return bestFriends.stream().filter(friend -> friend.getName().equalsIgnoreCase(name)).findFirst().orElse(Friend.FRIEND_NOT_FOUND);
+    }
+
     private Friend getBestFriend(UUID uuid) {
         return bestFriends.stream().filter(friend -> friend.getUuid().equals(uuid)).findFirst().orElse(Friend.FRIEND_NOT_FOUND);
     }
diff --git a/src/main/java/eu/olli/cowmoonication/listener/ChatListener.java b/src/main/java/eu/olli/cowmoonication/listener/ChatListener.java
index 42a45e0..78a8f29 100644
--- a/src/main/java/eu/olli/cowmoonication/listener/ChatListener.java
+++ b/src/main/java/eu/olli/cowmoonication/listener/ChatListener.java
@@ -2,6 +2,7 @@ package eu.olli.cowmoonication.listener;
 
 import eu.olli.cowmoonication.Cowmoonication;
 import eu.olli.cowmoonication.config.MooConfig;
+import eu.olli.cowmoonication.util.Utils;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.GuiChat;
 import net.minecraft.client.gui.GuiNewChat;
@@ -34,9 +35,9 @@ public class ChatListener {
 
     @SubscribeEvent
     public void onLogInOutMessage(ClientChatReceivedEvent e) {
-        if (e.type != 2 && MooConfig.filterFriendNotifications) { // normal chat or system msg
+        if (e.type != 2) { // normal chat or system msg
             String text = e.message.getUnformattedText();
-            if (text.length() < 42 && // to prevent the party disbanded message from being filtered: "The party was disbanded because all invites have expired and all members have left."
+            if (MooConfig.filterFriendNotifications && text.length() < 42 && // to prevent the party disbanded message from being filtered: "The party was disbanded because all invites have expired and all members have left."
                     (text.endsWith(" joined.") || text.endsWith(" left.") // Hypixel
                             || text.endsWith(" joined the game") || text.endsWith(" left the game."))) { // Spigot
                 // TODO maybe check which server thePlayer is on and check for logout pattern accordingly
@@ -48,6 +49,14 @@ public class ChatListener {
                 if (!isBestFriend) {
                     e.setCanceled(true);
                 }
+            } else if (text.length() == 56 && text.startsWith("Your new API key is ")) {
+                // Your new API key is 00000000-0000-0000-0000-000000000000
+                String moo = text.substring(20, 56);
+                if (Utils.isValidUuid(moo)) {
+                    MooConfig.moo = moo;
+                    main.getConfig().syncFromFields();
+                    main.getChatHelper().sendMessage(EnumChatFormatting.GREEN, "Added updated API key in Cowmoonication config!");
+                }
             }
         }
     }
diff --git a/src/main/java/eu/olli/cowmoonication/util/ApiUtils.java b/src/main/java/eu/olli/cowmoonication/util/ApiUtils.java
index 5ff7d5d..d408721 100644
--- a/src/main/java/eu/olli/cowmoonication/util/ApiUtils.java
+++ b/src/main/java/eu/olli/cowmoonication/util/ApiUtils.java
@@ -5,10 +5,13 @@ import com.google.gson.GsonBuilder;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonParser;
 import com.mojang.util.UUIDTypeAdapter;
+import eu.olli.cowmoonication.Cowmoonication;
+import eu.olli.cowmoonication.config.MooConfig;
 import eu.olli.cowmoonication.friends.Friend;
 
 import java.io.BufferedReader;
 import java.io.IOException;
+import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.net.HttpURLConnection;
 import java.net.URL;
@@ -21,6 +24,7 @@ public class ApiUtils {
     public static final String UUID_NOT_FOUND = "UUID-NOT-FOUND";
     private static final String NAME_TO_UUID_URL = "https://api.mojang.com/users/profiles/minecraft/";
     private static final String UUID_TO_NAME_URL = "https://api.mojang.com/user/profiles/%s/names";
+    private static final String STALKING_URL = "https://api.hypixel.net/status?key=%s&uuid=%s";
     private static ExecutorService pool = Executors.newCachedThreadPool();
     private static Gson gson = new GsonBuilder().registerTypeAdapter(UUID.class, new UUIDTypeAdapter()).registerTypeAdapter(Friend.class, new Friend.FriendCreator()).create();
 
@@ -67,4 +71,34 @@ public class ApiUtils {
         }
         return null;
     }
+
+    public static void fetchPlayerStatus(Friend friend, Consumer<HyStalking> action) {
+        pool.execute(() -> action.accept(stalkPlayer(friend)));
+    }
+
+    private static HyStalking stalkPlayer(Friend friend) {
+        try {
+            HttpURLConnection connection = (HttpURLConnection) new URL(String.format(STALKING_URL, MooConfig.moo, UUIDTypeAdapter.fromUUID(friend.getUuid()))).openConnection();
+            connection.setReadTimeout(5000);
+            connection.addRequestProperty("User-Agent", "Forge Mod " + Cowmoonication.MODNAME + "/" + Cowmoonication.VERSION + " (https://github.com/cow-mc/Cowmoonication/)");
+
+            connection.getResponseCode();
+            if (connection.getResponseCode() == 204) {
+                return null;
+            } else { // various possible http status code: 200, 403, 422
+                BufferedReader reader;
+                InputStream errorStream = connection.getErrorStream();
+                if (errorStream != null) {
+                    reader = new BufferedReader(new InputStreamReader(errorStream));
+                } else {
+                    reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
+                }
+
+                return gson.fromJson(reader, HyStalking.class);
+            }
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return null;
+    }
 }
diff --git a/src/main/java/eu/olli/cowmoonication/util/HyStalking.java b/src/main/java/eu/olli/cowmoonication/util/HyStalking.java
new file mode 100644
index 0000000..a46e1b5
--- /dev/null
+++ b/src/main/java/eu/olli/cowmoonication/util/HyStalking.java
@@ -0,0 +1,123 @@
+package eu.olli.cowmoonication.util;
+
+import org.apache.commons.lang3.text.WordUtils;
+
+public class HyStalking {
+    private boolean success;
+    private String cause;
+    private HySession session;
+
+    public HyStalking() {
+    }
+
+    public boolean isSuccess() {
+        return success;
+    }
+
+    public String getCause() {
+        return cause;
+    }
+
+    public HySession getSession() {
+        return session;
+    }
+
+    public static class HySession {
+        private boolean online;
+        private String gameType;
+        private String mode;
+        private String map;
+
+        public HySession() {
+        }
+
+        public boolean isOnline() {
+            return online;
+        }
+
+        public String getGameType() {
+            String cleanGameType;
+            try {
+                cleanGameType = GameType.valueOf(gameType).getCleanName();
+            } catch (IllegalArgumentException e) {
+                // no matching game type found
+                cleanGameType = WordUtils.capitalizeFully(gameType.replace('_', ' '));
+            }
+            return cleanGameType;
+        }
+
+        public String getMode() {
+            // list partially taken from https://api.hypixel.net/gameCounts?key=MOO
+            switch (mode) {
+                // SkyBlock related
+                case "dynamic":
+                    return "Private Island";
+                case "hub":
+                    return "Hub";
+                case "combat_1":
+                    return "Spider's Den";
+                case "combat_2":
+                    return "Blazing Fortress";
+                case "combat_3":
+                    return "The End";
+                case "farming_1":
+                    return "The Barn";
+                case "farming_2":
+                    return "Mushroom Desert";
+                case "foraging_1":
+                    return "The Park";
+                case "mining_1":
+                    return "Gold Mine";
+                case "mining_2":
+                    return "Deep Caverns";
+                default:
+                    return WordUtils.capitalizeFully(mode.replace('_', ' '));
+            }
+        }
+
+        public String getMap() {
+            return map;
+        }
+
+        // TODO replace with api request: https://github.com/HypixelDev/PublicAPI/blob/master/Documentation/misc/GameType.md
+        public enum GameType {
+            QUAKECRAFT("Quakecraft"),
+            WALLS("Walls"),
+            PAINTBALL("Paintball"),
+            SURVIVAL_GAMES("Blitz Survival Games"),
+            TNTGAMES("The TNT Games"),
+            VAMPIREZ("VampireZ"),
+            WALLS3("Mega Walls"),
+            ARCADE("Arcade"),
+            ARENA("Arena Brawl"),
+            UHC("UHC Champions"),
+            MCGO("Cops and Crims"),
+            BATTLEGROUND("Warlords"),
+            SUPER_SMASH("Smash Heroes"),
+            GINGERBREAD("Turbo Kart Racers"),
+            HOUSING("Housing"),
+            SKYWARS("SkyWars"),
+            TRUE_COMBAT("Crazy Walls"),
+            SPEED_UHC("Speed UHC"),
+            SKYCLASH("SkyClash"),
+            LEGACY("Classic Games"),
+            PROTOTYPE("Prototype"),
+            BEDWARS("Bed Wars"),
+            MURDER_MYSTERY("Murder Mystery"),
+            BUILD_BATTLE("Build Battle"),
+            DUELS("Duels"),
+            SKYBLOCK("SkyBlock"),
+            PIT("Pit");
+
+            private final String cleanName;
+
+            GameType(String cleanName) {
+                this.cleanName = cleanName;
+            }
+
+            public String getCleanName() {
+                return cleanName;
+            }
+        }
+    }
+}
diff --git a/src/main/java/eu/olli/cowmoonication/util/Utils.java b/src/main/java/eu/olli/cowmoonication/util/Utils.java
index 0b890f0..ec96bf1 100644
--- a/src/main/java/eu/olli/cowmoonication/util/Utils.java
+++ b/src/main/java/eu/olli/cowmoonication/util/Utils.java
@@ -3,11 +3,16 @@ package eu.olli.cowmoonication.util;
 import java.util.regex.Pattern;
 
 public final class Utils {
+    public static final Pattern VALID_UUID_PATTERN = Pattern.compile("^(\\w{8})-(\\w{4})-(\\w{4})-(\\w{4})-(\\w{12})$");
     private static final Pattern VALID_USERNAME = Pattern.compile("^[\\w]{1,16}$");
 
     private Utils() {
     }
 
+    public static boolean isValidUuid(String uuid) {
+        return VALID_UUID_PATTERN.matcher(uuid).matches();
+    }
+
     public static boolean isValidMcName(String username) {
         return VALID_USERNAME.matcher(username).matches();
     }
diff --git a/update.json b/update.json
index 44a3ab2..44f660f 100644
--- a/update.json
+++ b/update.json
@@ -1,10 +1,10 @@
 {
   "homepage": "https://github.com/cow-mc/Cowmoonication/",
   "1.8.9": {
-    "1.8.9-0.2.0": "https://github.com/cow-mc/Cowmoonication/blob/master/CHANGELOG.md"
+    "1.8.9-0.3.0": "https://github.com/cow-mc/Cowmoonication/blob/master/CHANGELOG.md"
   },
   "promos": {
-    "1.8.9-latest": "1.8.9-0.2.0",
-    "1.8.9-recommended": "1.8.9-0.2.0"
+    "1.8.9-latest": "1.8.9-0.3.0",
+    "1.8.9-recommended": "1.8.9-0.3.0"
   }
 }