Do uuid version 3 warning

src/main/java/me/libraryaddict/disguise/commands/utils/GrabHeadCommand.java

@@ -80,6 +80,7 @@ public class GrabHeadCommand implements CommandExecutor {
             @Override
             public void onSuccess(WrappedGameProfile profile) {
                 runnable.cancel();
+                DisguiseUtilities.doSkinUUIDWarning(sender);
 
                 DisguiseUtilities.setGrabHeadCommandUsed();
 

src/main/java/me/libraryaddict/disguise/commands/utils/GrabSkinCommand.java

@@ -90,6 +90,7 @@ public class GrabSkinCommand implements CommandExecutor {
             @Override
             public void onSuccess(WrappedGameProfile profile) {
                 runnable.cancel();
+                DisguiseUtilities.doSkinUUIDWarning(sender);
 
                 String nName = name;
 

src/main/java/me/libraryaddict/disguise/commands/utils/SaveDisguiseCommand.java

@@ -30,7 +30,9 @@ public class SaveDisguiseCommand implements CommandExecutor {
     public boolean onCommand(CommandSender sender, Command command, String s, String[] strings) {
         if (sender instanceof Player && !sender.isOp() &&
                 (!LibsPremium.isPremium() || LibsPremium.getPaidInformation() == LibsPremium.getPluginInformation())) {
-            sender.sendMessage(ChatColor.RED + "This is the free version of Lib's Disguises, player commands are limited to console and Operators only! Purchase the plugin for non-admin usage!");
+            sender.sendMessage(ChatColor.RED +
+                    "This is the free version of Lib's Disguises, player commands are limited to console and Operators only! Purchase the plugin for " +
+                    "non-admin usage!");
             return true;
         }
 
@@ -68,8 +70,7 @@ public class SaveDisguiseCommand implements CommandExecutor {
                 DisguiseAPI.addCustomDisguise(name, disguiseString);
 
                 LibsMsg.CUSTOM_DISGUISE_SAVED.send(sender, name);
-            }
-            catch (DisguiseParseException e) {
+            } catch (DisguiseParseException e) {
                 if (e.getMessage() != null) {
                     DisguiseUtilities.sendMessage(sender, e.getMessage());
                 } else {
@@ -85,8 +86,9 @@ public class SaveDisguiseCommand implements CommandExecutor {
             int i = 2;
 
             for (; i < args.length; i++) {
-                if (!args[i].equalsIgnoreCase("setskin"))
+                if (!args[i].equalsIgnoreCase("setskin")) {
                     continue;
+                }
 
                 break;
             }
@@ -138,6 +140,7 @@ public class SaveDisguiseCommand implements CommandExecutor {
                     @Override
                     public void onSuccess(WrappedGameProfile profile) {
                         runnable.cancel();
+                        DisguiseUtilities.doSkinUUIDWarning(sender);
 
                         finalArgs[skinId] = DisguiseUtilities.getGson().toJson(profile);
 
@@ -166,8 +169,7 @@ public class SaveDisguiseCommand implements CommandExecutor {
             LibsMsg.CUSTOM_DISGUISE_SAVED.send(sender, name);
 
             DisguiseUtilities.setSaveDisguiseCommandUsed();
-        }
-        catch (DisguiseParseException e) {
+        } catch (DisguiseParseException e) {
             if (e.getMessage() != null) {
                 DisguiseUtilities.sendMessage(sender, e.getMessage());
             } else {

src/main/java/me/libraryaddict/disguise/utilities/DisguiseUtilities.java

@@ -196,6 +196,7 @@ public class DisguiseUtilities {
     private final static ConcurrentHashMap<String, DScoreTeam> teams = new ConcurrentHashMap<>();
     private final static boolean java16;
     private static boolean criedOverJava16;
+    private static HashSet<UUID> warnedSkin = new HashSet<>();
 
     static {
         final Matcher matcher = Pattern.compile("(?:1\\.)?(\\d+)").matcher(System.getProperty("java.version"));
@@ -214,6 +215,21 @@ public class DisguiseUtilities {
         }
     }
 
+    public static void doSkinUUIDWarning(CommandSender sender) {
+        if (!(sender instanceof Player)) {
+            return;
+        }
+
+        UUID uuid = ((Player) sender).getUniqueId();
+
+        if (uuid.version() == 4 || warnedSkin.contains(uuid)) {
+            return;
+        }
+
+        warnedSkin.add(uuid);
+        LibsMsg.SKIN_API_UUID_3.send(sender);
+    }
+
     /**
      * Only allow saves every 2 minutes
      */

src/main/java/me/libraryaddict/disguise/utilities/translations/LibsMsg.java

@@ -198,9 +198,8 @@ public enum LibsMsg {
     COPY_DISGUISE_NO_COPY(ChatColor.GREEN + "Data: " + ChatColor.YELLOW + "%s"),
     CLICK_TO_COPY_HOVER(ChatColor.GOLD + "Click to Copy"),
     CLICK_COPY(ChatColor.YELLOW + "" + ChatColor.BOLD + "%s"),
-    SKIN_API_UUID_3(ChatColor.RED +
-            "You seem to be using a Minecraft account with an UUID version of 3. If the skin is not as expected, you can change 'UUIDVersion' in protocol.yml" +
-            " to 3 which may fix this. If you are using a Minecraft account that was not purchased, then there is nothing further we can do to fix this."),
+    SKIN_API_UUID_3(ChatColor.RED + "Using account with UUID version 3. If skin is incorrect, try change 'UUIDVersion' in protocol.yml" +
+            " to 3. If skin is still incorrect and you did not purchase Minecraft, this cannot be fixed."),
     SKIN_API_IN_USE(ChatColor.RED + "mineskin.org is currently in use, please try again"),
     SKIN_API_TIMER(ChatColor.RED + "mineskin.org can be used again in %s seconds"),
     SKIN_API_FAIL(ChatColor.RED + "Unexpected error while accessing mineskin.org, please try again"),