[FEAT] Allow disabling nickname updates on linking and allow custom nickname formats

src/main/java/com/hypherionmc/sdlink/core/accounts/MinecraftAccount.java

@@ -131,7 +131,7 @@ public class MinecraftAccount {
         try {
             sdlinkDatabase.upsert(account);
 
-            String suffix = " [MC: " + this.username + "]";
+            String suffix = this.username;
             int availableChars = 32 - suffix.length();
             String nickname = member.getEffectiveName();
 
@@ -139,10 +139,11 @@ public class MinecraftAccount {
                 nickname = nickname.substring(0, availableChars - 3) + "...";
             }
 
-            nickname += suffix;
+            String finalnickname = SDLinkConfig.INSTANCE.whitelistingAndLinking.accountLinking.nicknameFormat.replace("%nick%", nickname).replace("%mcname%", suffix);
 
+            if (SDLinkConfig.INSTANCE.whitelistingAndLinking.accountLinking.changeNickname) {
                 try {
-                member.modifyNickname(nickname).queue();
+                    member.modifyNickname(finalnickname).queue();
 
                     try {
                         if (RoleManager.getLinkedRole() != null) {
@@ -156,6 +157,7 @@ public class MinecraftAccount {
                         e.printStackTrace();
                     }
                 }
+            }
 
             return Result.success("Your Discord and MC accounts have been linked");
         } catch (Exception e) {

src/main/java/com/hypherionmc/sdlink/core/config/impl/LinkAndWhitelistConfigSettings.java

@@ -33,6 +33,14 @@ public class LinkAndWhitelistConfigSettings {
         @Path("requireLinking")
         @SpecComment("Require users to link their Discord and Minecraft accounts before joining the server")
         public boolean requireLinking = false;
+
+        @Path("changeNickname")
+        @SpecComment("Allow nickname changes on account linking")
+        public boolean changeNickname = true;
+
+        @Path("nicknameFormat")
+        @SpecComment("The nickname format to use for linked accounts, when changeNickname is enabled. %nick% for current nickname/name and %mcname% for the minecraft name")
+        public String nicknameFormat = "%nick% [MC:%mcname%]";
     }
 
     public static class Whitelisting {

src/main/java/com/hypherionmc/sdlink/core/managers/PermissionChecker.java

@@ -28,7 +28,6 @@ public class PermissionChecker {
     // Base Permissions required by the bot to operate
     private static final List<Permission> BOT_PERMS = new ArrayList<>() {{
        add(Permission.NICKNAME_CHANGE);
-       add(Permission.NICKNAME_MANAGE);
        add(Permission.MANAGE_WEBHOOKS);
        add(Permission.MESSAGE_SEND);
        add(Permission.MESSAGE_EMBED_LINKS);
@@ -50,6 +49,10 @@ public class PermissionChecker {
      * Run the permission checker to see if the bot has all the required permissions
      */
     public static void checkBotSetup() {
+        if (SDLinkConfig.INSTANCE.whitelistingAndLinking.accountLinking.changeNickname) {
+            BOT_PERMS.add(Permission.NICKNAME_MANAGE);
+        }
+
         StringBuilder builder = new StringBuilder();
         builder.append("\r\n").append("******************* Simple Discord Link Errors *******************").append("\r\n");
         AtomicInteger errCount = new AtomicInteger();