Removed best friends list and join/leave notifications toggles

Both features have been implemented by Hypixel

13 files changed, 598 insertions, 516 deletions

diff --git a/src/main/java/de/cowtipper/cowlection/command/MooCommand.java b/src/main/java/de/cowtipper/cowlection/command/MooCommand.java
index 9c950b6..c1baff9 100644
--- a/src/main/java/de/cowtipper/cowlection/command/MooCommand.java
+++ b/src/main/java/de/cowtipper/cowlection/command/MooCommand.java
@@ -10,6 +10,7 @@ import de.cowtipper.cowlection.command.exception.InvalidPlayerNameException;
 import de.cowtipper.cowlection.command.exception.MooCommandException;
 import de.cowtipper.cowlection.config.CredentialStorage;
 import de.cowtipper.cowlection.config.MooConfig;
+import de.cowtipper.cowlection.config.gui.MooConfigBestFriendsMigration;
 import de.cowtipper.cowlection.config.gui.MooConfigGui;
 import de.cowtipper.cowlection.data.*;
 import de.cowtipper.cowlection.data.HySkyBlockStats.Profile.Pet;
@@ -19,6 +20,7 @@ import de.cowtipper.cowlection.partyfinder.RuleEditorGui;
 import de.cowtipper.cowlection.search.GuiSearch;
 import de.cowtipper.cowlection.util.*;
 import net.minecraft.client.Minecraft;
+import net.minecraft.client.audio.SoundCategory;
 import net.minecraft.client.entity.EntityOtherPlayerMP;
 import net.minecraft.client.gui.GuiScreen;
 import net.minecraft.client.multiplayer.WorldClient;
@@ -93,16 +95,23 @@ public class MooCommand extends CommandBase {
                 || args[0].equalsIgnoreCase("s")
                 || args[0].equalsIgnoreCase("askPolitelyWhereTheyAre")) {
             handleStalking(args);
-        } else if (args[0].equalsIgnoreCase("add")) {
-            handleBestFriendAdd(args);
+        } else if (args[0].equalsIgnoreCase("add")
+                || args[0].equalsIgnoreCase("list")
+                || args[0].equalsIgnoreCase("online")
+                || args[0].equalsIgnoreCase("nameChangeCheck")) {
+            handleBestFriendSubcommands();
         } else if (args[0].equalsIgnoreCase("remove")) {
             handleBestFriendRemove(args);
-        } else if (args[0].equalsIgnoreCase("list")) {
-            handleListBestFriends();
-        } else if (args[0].equalsIgnoreCase("online")) {
-            handleBestFriendsOnlineCheck();
-        } else if (args[0].equalsIgnoreCase("nameChangeCheck")) {
-            handleNameChangeCheck(args);
+        } else if (args[0].equalsIgnoreCase("bestfriends") || args[0].equalsIgnoreCase("bestfriend")) {
+            displayGuiScreen(new MooConfigBestFriendsMigration());
+        } else if (args[0].equalsIgnoreCase("I-read-the-login-logout-notification-changes")) {
+            main.getConfig().acknowledgeLoginLogoutNotificationChanges();
+            MooChatComponent confirmationMsg = new MooChatComponent("[§2Cowlection§a] The 'login & logout notification filter' removal info message will no longer be shown.").green();
+            if (main.getFriendsHandler().getBestFriendsListSize() > 0) {
+                confirmationMsg.appendSibling(new MooChatComponent("\nHowever, don't forget to migrate your Cowlection best friends by using §4/moo bestfriends§c!").red())
+                        .setSuggestCommand("/moo bestfriends");
+            }
+            main.getChatHelper().sendMessage(confirmationMsg);
         }
         // + toggle (= alias for config)
         //endregion
@@ -193,7 +202,7 @@ public class MooCommand extends CommandBase {
     //region sub commands: Best friends, friends & other players
     private void handleStalking(String[] args) throws CommandException {
         if (!CredentialStorage.isMooValid) {
-            throw new MooCommandException("You haven't set your Hypixel API key yet or the API key is invalid. 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.");
+            throw new MooCommandException("You haven't set your Hypixel API key yet or the API key is invalid. Use " + EnumChatFormatting.DARK_RED + "/" + this.getCommandName() + " apikey <key>" + EnumChatFormatting.RED + " to manually set your existing API key.");
         }
         if (args.length != 2) {
             throw new WrongUsageException("/" + getCommandName() + " stalk <playerName>");
@@ -202,24 +211,18 @@ public class MooCommand extends CommandBase {
         } else {
             String playerName = args[1];
             main.getChatHelper().sendMessage(EnumChatFormatting.GRAY, "Stalking " + EnumChatFormatting.WHITE + playerName + EnumChatFormatting.GRAY + ". This may take a few seconds.");
-            boolean isBestFriend = main.getFriendsHandler().isBestFriend(playerName, true);
-            if (isBestFriend) {
-                Friend stalkedPlayer = main.getFriendsHandler().getBestFriend(playerName);
-                // we have the uuid already, so stalk the player
-                stalkPlayer(stalkedPlayer);
-            } else {
-                // fetch player uuid
-                ApiUtils.fetchFriendData(playerName, stalkedPlayer -> {
-                    if (stalkedPlayer == null) {
-                        throw new ApiContactException("Mojang", "couldn't stalk " + EnumChatFormatting.DARK_RED + playerName);
-                    } else if (stalkedPlayer.equals(Friend.FRIEND_NOT_FOUND)) {
-                        throw new PlayerNotFoundException("There is no player with the name " + EnumChatFormatting.DARK_RED + playerName + EnumChatFormatting.RED + ".");
-                    } else {
-                        // ... then stalk the player
-                        stalkPlayer(stalkedPlayer);
-                    }
-                });
-            }
+
+            // fetch player uuid
+            ApiUtils.fetchFriendData(playerName, stalkedPlayer -> {
+                if (stalkedPlayer == null) {
+                    throw new ApiContactException("Mojang", "couldn't stalk " + EnumChatFormatting.DARK_RED + playerName);
+                } else if (stalkedPlayer.equals(Friend.FRIEND_NOT_FOUND)) {
+                    throw new PlayerNotFoundException("There is no player with the name " + EnumChatFormatting.DARK_RED + playerName + EnumChatFormatting.RED + ".");
+                } else {
+                    // ... then stalk the player
+                    stalkPlayer(stalkedPlayer);
+                }
+            });
         }
     }
 
@@ -267,20 +270,11 @@ public class MooCommand extends CommandBase {
         });
     }
 
-    private void handleBestFriendAdd(String[] args) throws CommandException {
-        if (args.length != 2) {
-            throw new WrongUsageException("/" + getCommandName() + " add <playerName>");
-        } else if (Utils.isInvalidMcName(args[1])) {
-            throw new InvalidPlayerNameException(args[1]);
-        } else if (main.getFriendsHandler().isBestFriend(args[1], true)) {
-            throw new MooCommandException(EnumChatFormatting.DARK_RED + args[1] + EnumChatFormatting.RED + " is a best friend already.");
-        } else if (main.getFriendsHandler().getBestFriends().size() >= 100) {
-            throw new MooCommandException(EnumChatFormatting.RED + "The best friends list is limited to 100 players. Remove some with " + EnumChatFormatting.WHITE + "/" + getCommandName() + " remove <name> " + EnumChatFormatting.RED + "first");
-        } else {
-            main.getChatHelper().sendMessage(EnumChatFormatting.GOLD, "Fetching " + EnumChatFormatting.YELLOW + args[1] + EnumChatFormatting.GOLD + "'s unique user id. This may take a few seconds...");
-            // add friend async
-            main.getFriendsHandler().addBestFriend(args[1]);
-        }
+    private void handleBestFriendSubcommands() {
+        main.getChatHelper().sendMessage(new MooChatComponent("[" + EnumChatFormatting.DARK_RED + Cowlection.MODNAME + EnumChatFormatting.RED + "] The 'best friends list' feature has been removed from this mod.").red()
+                .appendSibling(new MooChatComponent(" Run " + EnumChatFormatting.GOLD + "/moo bestfriends " + EnumChatFormatting.YELLOW + "to migrate your best friends list").yellow())
+                .setSuggestCommand("/moo bestfriends"));
+        Minecraft.getMinecraft().thePlayer.playSound("mob.villager.no", Minecraft.getMinecraft().gameSettings.getSoundLevel(SoundCategory.MASTER), 1.4f);
     }
 
     private void handleBestFriendRemove(String[] args) throws CommandException {
@@ -297,51 +291,12 @@ public class MooCommand extends CommandBase {
             throw new MooCommandException(EnumChatFormatting.DARK_RED + username + EnumChatFormatting.RED + " isn't a best friend.");
         }
     }
-
-    private void handleListBestFriends() {
-        Set<String> bestFriends = main.getFriendsHandler().getBestFriends();
-
-        // TODO show fancy gui with list of best friends; maybe with buttons to delete them
-        main.getChatHelper().sendMessage(EnumChatFormatting.GREEN, "➜ Best friends"
-                + (bestFriends.isEmpty() ? "" : " (" + EnumChatFormatting.DARK_GREEN + bestFriends.size() + EnumChatFormatting.GREEN + ")") + ": "
-                + ((bestFriends.isEmpty())
-                ? EnumChatFormatting.ITALIC + "none :c"
-                : EnumChatFormatting.DARK_GREEN + String.join(EnumChatFormatting.GREEN + ", " + EnumChatFormatting.DARK_GREEN, bestFriends)));
-    }
-
-    private void handleBestFriendsOnlineCheck() throws MooCommandException {
-        if (!CredentialStorage.isMooValid) {
-            throw new MooCommandException("You haven't set your Hypixel API key yet or the API key is invalid. 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.");
-        }
-        if (main.getFriendsHandler().getBestFriends().size() > 0) {
-            main.getChatHelper().sendMessage(EnumChatFormatting.GRAY, "Checking online status of " + EnumChatFormatting.WHITE + main.getFriendsHandler().getBestFriends().size() + EnumChatFormatting.GRAY + " best friends. This may take a few seconds.");
-            main.getFriendsHandler().runBestFriendsOnlineCheck(true);
-        } else {
-            main.getChatHelper().sendMessage(EnumChatFormatting.RED, "You haven't added anyone to your best friends list yet. Do so with " + EnumChatFormatting.WHITE + "/moo add <playerName>");
-        }
-    }
-
-    private void handleNameChangeCheck(String[] args) throws CommandException {
-        if (args.length != 2) {
-            throw new WrongUsageException("/" + getCommandName() + " nameChangeCheck <playerName>");
-        } else if (Utils.isInvalidMcName(args[1])) {
-            throw new InvalidPlayerNameException(args[1]);
-        }
-        Friend bestFriend = main.getFriendsHandler().getBestFriend(args[1]);
-        if (bestFriend.equals(Friend.FRIEND_NOT_FOUND)) {
-            throw new MooCommandException(EnumChatFormatting.DARK_RED + args[1] + EnumChatFormatting.RED + " isn't a best friend.");
-        } else {
-            main.getChatHelper().sendMessage(EnumChatFormatting.GOLD, "Checking if " + bestFriend.getName() + " changed their name... This will take a few seconds...");
-            // check for name change async
-            main.getFriendsHandler().doBestFriendNameChangeCheck(bestFriend, true);
-        }
-    }
     //endregion
 
     //region sub commands: SkyBlock
     private void handleStalkingSkyBlock(String[] args) throws CommandException {
         if (!CredentialStorage.isMooValid) {
-            throw new MooCommandException("You haven't set your Hypixel API key yet or the API key is invalid. 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.");
+            throw new MooCommandException("You haven't set your Hypixel API key yet or the API key is invalid. Use " + EnumChatFormatting.DARK_RED + "/" + this.getCommandName() + " apikey <key>" + EnumChatFormatting.RED + " to manually set your existing API key.");
         }
         if (args.length != 2) {
             throw new WrongUsageException("/" + getCommandName() + " skyblockstalk <playerName>");
@@ -350,24 +305,17 @@ public class MooCommand extends CommandBase {
         } else {
             String playerName = args[1];
             main.getChatHelper().sendMessage(EnumChatFormatting.GRAY, "Stalking " + EnumChatFormatting.WHITE + playerName + EnumChatFormatting.GRAY + "'s SkyBlock stats. This may take a few seconds.");
-            boolean isBestFriend = main.getFriendsHandler().isBestFriend(playerName, true);
-            if (isBestFriend) {
-                Friend stalkedPlayer = main.getFriendsHandler().getBestFriend(playerName);
-                // we have the uuid already, so stalk the player
-                stalkSkyBlockStats(stalkedPlayer);
-            } else {
-                // fetch player uuid
-                ApiUtils.fetchFriendData(playerName, stalkedPlayer -> {
-                    if (stalkedPlayer == null) {
-                        throw new ApiContactException("Mojang", "couldn't stalk " + EnumChatFormatting.DARK_RED + playerName);
-                    } else if (stalkedPlayer.equals(Friend.FRIEND_NOT_FOUND)) {
-                        throw new PlayerNotFoundException("There is no player with the name " + EnumChatFormatting.DARK_RED + playerName + EnumChatFormatting.RED + ".");
-                    } else {
-                        // ... then stalk the player
-                        stalkSkyBlockStats(stalkedPlayer);
-                    }
-                });
-            }
+            // fetch player uuid
+            ApiUtils.fetchFriendData(playerName, stalkedPlayer -> {
+                if (stalkedPlayer == null) {
+                    throw new ApiContactException("Mojang", "couldn't stalk " + EnumChatFormatting.DARK_RED + playerName);
+                } else if (stalkedPlayer.equals(Friend.FRIEND_NOT_FOUND)) {
+                    throw new PlayerNotFoundException("There is no player with the name " + EnumChatFormatting.DARK_RED + playerName + EnumChatFormatting.RED + ".");
+                } else {
+                    // ... then stalk the player
+                    stalkSkyBlockStats(stalkedPlayer);
+                }
+            });
         }
     }
 
@@ -879,7 +827,7 @@ public class MooCommand extends CommandBase {
         } else if ((args.length == 2 && (args[1].equalsIgnoreCase("party") || args[1].equalsIgnoreCase("p")))
                 || args.length == 1 && args[0].equalsIgnoreCase("dp")) {
             if (!CredentialStorage.isMooValid) {
-                throw new MooCommandException("You haven't set your Hypixel API key yet or the API key is invalid. 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.");
+                throw new MooCommandException("You haven't set your Hypixel API key yet or the API key is invalid. Use " + EnumChatFormatting.DARK_RED + "/" + this.getCommandName() + " apikey <key>" + EnumChatFormatting.RED + " to manually set your existing API key.");
             } else if (dungeonsPartyListener != null) {
                 throw new MooCommandException("Please wait a few seconds before using this command again.");
             }
@@ -951,14 +899,14 @@ public class MooCommand extends CommandBase {
                 color = EnumChatFormatting.RED;
                 colorSecondary = EnumChatFormatting.DARK_RED;
             }
-            main.getChatHelper().sendMessage(color, firstSentence + color + " 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.");
+            main.getChatHelper().sendMessage(color, firstSentence + color + " Use " + colorSecondary + "/" + this.getCommandName() + " apikey <key>" + color + " to manually set your existing API key.");
         } else {
             String key = args[1];
             if (Utils.isValidUuid(key)) {
                 main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, "[" + Cowlection.MODNAME + "] Validating API key...");
                 main.getMoo().setMooIfValid(key, true);
             } else {
-                throw new SyntaxErrorException("[" + Cowlection.MODNAME + "] That doesn't look like a valid API key... Did you want check your API key usage statistics? Run /" + getCommandName() + " apikey");
+                throw new SyntaxErrorException("[" + Cowlection.MODNAME + "] That doesn't look like a valid API key...");
             }
         }
     }
@@ -1062,18 +1010,11 @@ public class MooCommand extends CommandBase {
                 ? new MooChatComponent("\n").reset().white().appendText(EnumChatFormatting.DARK_GREEN + "  ❢" + EnumChatFormatting.LIGHT_PURPLE + EnumChatFormatting.ITALIC + " To move the Dungeons overlay: " + EnumChatFormatting.WHITE + "/" + getCommandName() + " config " + EnumChatFormatting.GRAY + "➡ " + EnumChatFormatting.WHITE + "SB Dungeons " + EnumChatFormatting.GRAY + "➡ " + EnumChatFormatting.WHITE + "Dungeon Performance Overlay")
                 : null;
 
-        IChatComponent usage = new MooChatComponent("➜ " + Cowlection.MODNAME + " commands:").gold().bold()
+        MooChatComponent usage = new MooChatComponent("➜ " + Cowlection.MODNAME + " commands:").gold().bold()
                 .appendSibling(createCmdHelpEntry("config", "Open mod's configuration"))
                 .appendSibling(dungeonOverlayHint)
                 .appendSibling(new MooChatComponent("\n").reset().gray().appendText(EnumChatFormatting.DARK_GREEN + "  ❢" + EnumChatFormatting.GRAY + EnumChatFormatting.ITALIC + " Commands marked with §d§l⚷" + EnumChatFormatting.GRAY + EnumChatFormatting.ITALIC + " require a valid API key"))
-                .appendSibling(createCmdHelpSection(1, "Best friends, friends & other players"))
-                .appendSibling(createCmdHelpEntry("stalk", "Get info of player's status §d§l⚷"))
-                .appendSibling(createCmdHelpEntry("add", "Add best friends"))
-                .appendSibling(createCmdHelpEntry("remove", "Remove best friends"))
-                .appendSibling(createCmdHelpEntry("list", "View list of best friends"))
-                .appendSibling(createCmdHelpEntry("online", "View list of best friends that are currently online §d§l⚷"))
-                .appendSibling(createCmdHelpEntry("nameChangeCheck", "Force a scan for a changed name of a best friend (is done automatically as well)"))
-                .appendSibling(createCmdHelpSection(2, "SkyBlock"))
+                .appendSibling(createCmdHelpSection(1, "SkyBlock"))
                 .appendSibling(createCmdHelpEntry("stalkskyblock", "Get info of player's SkyBlock stats §d§l⚷"))
                 .appendSibling(createCmdHelpEntry("analyzeChests", "Analyze chests' contents and evaluate potential Bazaar value"))
                 .appendSibling(createCmdHelpEntry("analyzeIsland", "Analyze a SkyBlock private island (inspect minions)"))
@@ -1081,19 +1022,23 @@ public class MooCommand extends CommandBase {
                 .appendSibling(createCmdHelpEntry("dungeon", "SkyBlock Dungeons: display current dungeon performance"))
                 .appendSibling(createCmdHelpEntry("dungeon party", "SkyBlock Dungeons: Shows armor and dungeon info about current party members " + EnumChatFormatting.GRAY + "(alias: " + EnumChatFormatting.WHITE + "/" + getCommandName() + " dp" + EnumChatFormatting.GRAY + ") §d§l⚷"))
                 .appendSibling(createCmdHelpEntry("dungeon rules", "SkyBlock Dungeons: Edit rules for Party Finder " + EnumChatFormatting.GRAY + "(alias: " + EnumChatFormatting.WHITE + "/" + getCommandName() + " dr" + EnumChatFormatting.GRAY + ")"))
-                .appendSibling(createCmdHelpSection(3, "Miscellaneous"))
+                .appendSibling(createCmdHelpSection(2, "Miscellaneous"))
                 .appendSibling(createCmdHelpEntry("search", "Open Minecraft log search"))
                 .appendSibling(createCmdHelpEntry("worldage", "Check how long the current world is loaded"))
+                .appendSibling(createCmdHelpEntry("stalk", "Get info of player's online status §d§l⚷"))
                 .appendSibling(createCmdHelpEntry("guiScale", "Change GUI scale"))
                 .appendSibling(createCmdHelpEntry("rr", "Alias for /r without auto-replacement to /msg"))
                 .appendSibling(createCmdHelpEntry("shrug", "¯\\_(ツ)_/¯"))
                 .appendSibling(createCmdHelpEntry("discord", "Need help? Join the Cowshed discord"))
-                .appendSibling(createCmdHelpSection(4, "Update mod"))
+                .appendSibling(createCmdHelpSection(3, "Update mod"))
                 .appendSibling(createCmdHelpEntry("update", "Check for new mod updates"))
                 .appendSibling(createCmdHelpEntry("updateHelp", "Show mod update instructions"))
                 .appendSibling(createCmdHelpEntry("version", "View results of last mod update check"))
-                .appendSibling(createCmdHelpEntry("directory", "Open Minecraft's mods directory"))
-                .appendFreshSibling(new MooChatComponent("➡ /commandslist " + EnumChatFormatting.YELLOW + "to list all commands added by your installed mods.").lightPurple().setSuggestCommand("/commandslist"))
+                .appendSibling(createCmdHelpEntry("directory", "Open Minecraft's mods directory"));
+        if (main.getFriendsHandler().getBestFriendsListSize() > 0) {
+            usage.appendSibling(createCmdHelpEntry("bestfriends", "§dMigrate best friends list"));
+        }
+        usage.appendFreshSibling(new MooChatComponent("➡ /commandslist " + EnumChatFormatting.YELLOW + "to list all commands added by your installed mods.").lightPurple().setSuggestCommand("/commandslist"))
                 .appendFreshSibling(new MooChatComponent("➜ Need help with " + EnumChatFormatting.GOLD + Cowlection.MODNAME + EnumChatFormatting.GREEN + "? Do you have any questions, suggestions or other feedback? " + EnumChatFormatting.GOLD + "Join the Cowshed discord!").green().setUrl(Cowlection.INVITE_URL));
         sender.addChatMessage(usage);
     }
@@ -1119,11 +1064,12 @@ public class MooCommand extends CommandBase {
         if (args.length == 1) {
             return getListOfStringsMatchingLastWord(args,
                     /* main */ "help", "config",
-                    /* Best friends, friends & other players */ "stalk", "add", "remove", "list", "online", "nameChangeCheck",
+                    /* Best friends, friends & other players */ "stalk",
                     /* SkyBlock */ "stalkskyblock", "skyblockstalk", "chestAnalyzer", "analyzeChests", "analyzeIsland", "waila", "whatAmILookingAt", "dungeon",
                     /* miscellaneous */ "search", "worldage", "serverage", "guiscale", "rr", "shrug", "apikey", "discord",
                     /* update mod */ "update", "updateHelp", "version", "directory",
-                    /* rarely used aliases */ "askPolitelyWhereTheyAre", "askPolitelyAboutTheirSkyBlockProgress", "year", "whatyearisit");
+                    /* rarely used aliases */ "askPolitelyWhereTheyAre", "askPolitelyAboutTheirSkyBlockProgress", "year", "whatyearisit",
+                    /* deprecated as of 0.16.0: */ "bestfriends", "remove");
         } else if (args.length == 2 && (args[0].equalsIgnoreCase("waila") || args[0].equalsIgnoreCase("whatAmILookingAt"))) {
             return getListOfStringsMatchingLastWord(args, "all", "main");
         } else if (args.length == 2 && args[0].equalsIgnoreCase("remove")) {
@@ -1136,7 +1082,7 @@ public class MooCommand extends CommandBase {
             return getListOfStringsMatchingLastWord(args, "stop");
         }
         String commandArg = args[0].toLowerCase();
-        if (args.length == 2 && (commandArg.equals("s") || commandArg.equals("ss") || commandArg.equals("namechangecheck") || commandArg.contains("stalk") || commandArg.contains("askpolitely"))) { // stalk & stalkskyblock + namechangecheck
+        if (args.length == 2 && (commandArg.equals("s") || commandArg.equals("ss") || commandArg.contains("stalk") || commandArg.contains("askpolitely"))) { // stalk & stalkskyblock
             return getListOfStringsMatchingLastWord(args, main.getPlayerCache().getAllNamesSorted());
         }
         return null;
diff --git a/src/main/java/de/cowtipper/cowlection/config/CredentialStorage.java b/src/main/java/de/cowtipper/cowlection/config/CredentialStorage.java
index 86deda9..5b1b0b1 100644
--- a/src/main/java/de/cowtipper/cowlection/config/CredentialStorage.java
+++ b/src/main/java/de/cowtipper/cowlection/config/CredentialStorage.java
@@ -71,7 +71,7 @@ public class CredentialStorage {
             // uhm... looks like someone added the certs to the default JKS already
             return;
         }
-        System.out.println("Injecting Let's Encrypt support due to ancient Java version...");
+        Cowlection.getInstance().getLogger().info("Injecting Let's Encrypt support due to ancient Java version...");
         try {
             KeyStore originalKeyStore = KeyStore.getInstance(KeyStore.getDefaultType());
             originalKeyStore.load(Files.newInputStream(Paths.get(System.getProperty("java.home"), "lib", "security", "cacerts")), "changeit".toCharArray());
diff --git a/src/main/java/de/cowtipper/cowlection/config/MooConfig.java b/src/main/java/de/cowtipper/cowlection/config/MooConfig.java
index 92632f3..9a9ba4b 100644
--- a/src/main/java/de/cowtipper/cowlection/config/MooConfig.java
+++ b/src/main/java/de/cowtipper/cowlection/config/MooConfig.java
@@ -11,16 +11,13 @@ import de.cowtipper.cowlection.partyfinder.Rule;
 import de.cowtipper.cowlection.util.MooChatComponent;
 import de.cowtipper.cowlection.util.Utils;
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.audio.SoundCategory;
 import net.minecraft.client.gui.GuiScreen;
 import net.minecraft.command.ICommand;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTBase;
 import net.minecraft.nbt.NBTTagInt;
 import net.minecraft.nbt.NBTTagString;
-import net.minecraft.util.ChatComponentText;
 import net.minecraft.util.EnumChatFormatting;
-import net.minecraft.util.IChatComponent;
 import net.minecraft.util.Util;
 import net.minecraftforge.client.ClientCommandHandler;
 import net.minecraftforge.common.ForgeModContainer;
@@ -66,8 +63,6 @@ public class MooConfig {
     private static int maxLatestLogFileSize;
     // Category: Notifications
     public static boolean doUpdateCheck;
-    public static boolean showBestFriendNotifications;
-    public static boolean enableBestFriendNotificationSound;
     public static boolean showFriendNotifications;
     public static boolean showGuildNotifications;
     public static boolean doBestFriendsOnlineCheck;
@@ -325,6 +320,10 @@ public class MooConfig {
                 "configGuiExplanations", "as tooltip", "Display config settings explanations",
                 new String[]{"as tooltip", "as text", "hidden"}));
 
+        // Sub-Category: Mod update checker
+        subCat = configCat.addSubCategory("Mod update checker");
+        Property propDoUpdateCheck = subCat.addConfigEntry(cfg.get("notifications", // legacy category
+                "doUpdateCheck", true, "Check for mod updates?"));
 
         // (not visible in config gui: has opened config? or: knows how to move the dungeon overlay?)
         Property propHasOpenedConfigGui = cfg.get(configCat.getConfigName(),
@@ -360,7 +359,7 @@ public class MooConfig {
                 "  ‣ Guild and Party chat",
                 "  ‣ Party and game (duels) invites",
                 "  ‣ SkyBlock Dungeon party finder: when a player joins the group",
-                "  ‣ Online best friends (if the best friend online checker is enabled)");
+                "  ‣ Friends join & leave messages");
 
         propTabCompletableNamesCommands = subCat.addConfigEntry(cfg.get(configCat.getConfigName(),
                         "tabCompletableNamesCommands", new String[]{"p", "ah", "ignore", "msg", "tell", "w", "boop", "profile", "friend", "friends"}, "List of commands with a Tab-completable username argument.")
@@ -386,49 +385,22 @@ public class MooConfig {
         logSearchProperties.add(propMaxLogFileSize);
         logSearchProperties.add(propMaxLatestLogFileSize);
 
-        // Category: Notifications
-        configCat = new MooConfigCategory("Notifications", "notifications");
-        configCategories.add(configCat);
-
-        // Sub-Category: Mod update checker
-        subCat = configCat.addSubCategory("Mod update checker");
-        Property propDoUpdateCheck = subCat.addConfigEntry(cfg.get(configCat.getConfigName(),
-                "doUpdateCheck", true, "Check for mod updates?"));
-
-        // Sub-Category: Login & Logout
-        subCat = configCat.addSubCategory("Login & Logout");
-        subCat.addExplanations("Hides selected login/logout notifications ",
-                "while still showing notifications of best friends (if enabled).",
-                "Add someone to the best friends list with " + EnumChatFormatting.YELLOW + "/moo add <player>" + EnumChatFormatting.RESET);
-
-        Property propShowBestFriendNotifications = subCat.addConfigEntry(cfg.get(configCat.getConfigName(),
-                        "showBestFriendNotifications", true, "Set to true to receive best friends' login/logout messages, set to false hide them."),
-                new MooConfigPreview(new ChatComponentText("§a§lBest friend §a> §6Cow §r§ejoined.")));
-        Property propEnableBestFriendNotificationSound = subCat.addConfigEntry(cfg.get(configCat.getConfigName(),
-                        "enableBestFriendNotificationSound", false, "Set to true to play a notification sound when a best friend comes online"),
-                new MooConfigPreview("random.pop", Minecraft.getMinecraft().gameSettings.getSoundLevel(SoundCategory.MASTER), 1));
-
-        Property propShowFriendNotifications = subCat.addConfigEntry(cfg.get(configCat.getConfigName(),
-                        "showFriendNotifications", true, "Set to true to receive friends' login/logout messages, set to false hide them."),
-                new MooConfigPreview(new ChatComponentText("§aFriend > §r§aBob §ejoined.")));
-        Property propShowGuildNotifications = subCat.addConfigEntry(cfg.get(configCat.getConfigName(),
-                        "showGuildNotifications", true, "Set to true to receive guild members' login/logout messages, set to false hide them."),
-                new MooConfigPreview(new ChatComponentText("§2Guild > §r§7Herobrian §eleft.")));
+        // Category "Notifications" > Sub-Category: Login & Logout
+        // deprecated as of 0.16.0
+        String legacyConfigCategory = "notifications";
+        Property propShowFriendNotifications = cfg.get(legacyConfigCategory,
+                        "showFriendNotifications", true, "[DEPRECATED as of 0.16.0] Set to true to receive friends' login/logout messages, set to false hide them.")
+                .setShowInGui(false);
+        Property propShowGuildNotifications = cfg.get(legacyConfigCategory,
+                        "showGuildNotifications", true, "[DEPRECATED as of 0.16.0] Set to true to receive guild members' login/logout messages, set to false hide them.")
+                .setShowInGui(false);
 
 
         // Sub-Category: Best friends online status
-        subCat = configCat.addSubCategory("Best friend online checker");
-        subCat.addExplanations("Check which best friends are online when you join the server.",
-                "About once a day, a check for new name changes is also performed automatically.");
-
-        IChatComponent spacer = new MooChatComponent(", ").green();
-        Property propDoBestFriendsOnlineCheck = subCat.addConfigEntry(cfg.get(configCat.getConfigName(),
-                        "doBestFriendsOnlineCheck", true, "Set to true to check best friends' online status when joining a server, set to false to disable."),
-                new MooConfigPreview(new MooChatComponent("§a⬤ Online best friends (§24§a/§216§a): ")
-                        .appendSibling(MooConfigPreview.createDemoOnline("Alice", "Housing", "1 hour 13 minutes 37 seconds")).appendSibling(spacer)
-                        .appendSibling(MooConfigPreview.createDemoOnline("Bob", "Build Battle", "2 hours 13 minutes 37 seconds")).appendSibling(spacer)
-                        .appendSibling(MooConfigPreview.createDemoOnline("Cow", "SkyBlock", "13 minutes 37 seconds")).appendSibling(spacer)
-                        .appendSibling(MooConfigPreview.createDemoOnline("Herobrian", "Murder Mystery", "13 hours 33 minutes 37 seconds"))));
+        // deprecated as of 0.16.0
+        Property propDoBestFriendsOnlineCheck = cfg.get(legacyConfigCategory,
+                        "doBestFriendsOnlineCheck", false, "[DEPRECATED as of 0.16.0] Set to true to check best friends' online status when joining a server, set to false to disable.")
+                .setShowInGui(false);
 
 
         // Category: SkyBlock
@@ -760,8 +732,6 @@ public class MooConfig {
             maxLatestLogFileSize = propMaxLatestLogFileSize.getInt();
             // Category: Notifications
             doUpdateCheck = propDoUpdateCheck.getBoolean();
-            showBestFriendNotifications = propShowBestFriendNotifications.getBoolean();
-            enableBestFriendNotificationSound = propEnableBestFriendNotificationSound.getBoolean();
             showFriendNotifications = propShowFriendNotifications.getBoolean();
             showGuildNotifications = propShowGuildNotifications.getBoolean();
             doBestFriendsOnlineCheck = propDoBestFriendsOnlineCheck.getBoolean();
@@ -854,8 +824,6 @@ public class MooConfig {
         propMaxLatestLogFileSize.set(maxLatestLogFileSize);
         // Category: Notifications
         propDoUpdateCheck.set(doUpdateCheck);
-        propShowBestFriendNotifications.set(showBestFriendNotifications);
-        propEnableBestFriendNotificationSound.set(enableBestFriendNotificationSound);
         propShowFriendNotifications.set(showFriendNotifications);
         propShowGuildNotifications.set(showGuildNotifications);
         propDoBestFriendsOnlineCheck.set(doBestFriendsOnlineCheck);
@@ -1052,7 +1020,13 @@ public class MooConfig {
      * @return true if notifications should be monitored
      */
     public static boolean doMonitorNotifications() {
-        return showBestFriendNotifications || enableBestFriendNotificationSound || !showFriendNotifications || !showGuildNotifications;
+        return !showFriendNotifications || !showGuildNotifications;
+    }
+
+    public void acknowledgeLoginLogoutNotificationChanges() {
+        showFriendNotifications = true;
+        showGuildNotifications = true;
+        syncFromFields();
     }
 
     // Category: SkyBlock
diff --git a/src/main/java/de/cowtipper/cowlection/config/gui/MooConfigBestFriendsMigration.java b/src/main/java/de/cowtipper/cowlection/config/gui/MooConfigBestFriendsMigration.java
new file mode 100644
index 0000000..3ff1730
--- /dev/null
+++ b/src/main/java/de/cowtipper/cowlection/config/gui/MooConfigBestFriendsMigration.java
@@ -0,0 +1,409 @@
+package de.cowtipper.cowlection.config.gui;
+
+import de.cowtipper.cowlection.Cowlection;
+import de.cowtipper.cowlection.util.MooChatComponent;
+import de.cowtipper.cowlection.util.TickDelay;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.*;
+import net.minecraft.client.renderer.GlStateManager;
+import net.minecraft.client.renderer.Tessellator;
+import net.minecraft.util.ChatComponentText;
+import net.minecraft.util.EnumChatFormatting;
+import net.minecraft.util.IChatComponent;
+import net.minecraftforge.client.event.ClientChatReceivedEvent;
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.fml.client.GuiScrollingList;
+import net.minecraftforge.fml.client.config.GuiButtonExt;
+import net.minecraftforge.fml.client.config.GuiConfigEntries;
+import net.minecraftforge.fml.client.config.GuiEditArrayEntries;
+import net.minecraftforge.fml.client.config.GuiUtils;
+import net.minecraftforge.fml.common.eventhandler.EventPriority;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+
+import java.awt.*;
+import java.net.URI;
+import java.util.List;
+import java.util.*;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+
+/**
+ * Based on GuiModList
+ */
+public class MooConfigBestFriendsMigration extends GuiScreen {
+    /**
+     * <pre>
+     * §9§m-----------------------------------------------------
+     * §r§a[VIP] PLAYER§r§a is now a best friend!§r§9§m
+     * -----------------------------------------------------§r
+     *
+     * §9§m-----------------------------------------------------
+     * §r§a[VIP] PLAYER§r§e is no longer a best friend!§r§9§m
+     * -----------------------------------------------------§r
+     *
+     * §9§m-----------------------------------------------------
+     * §r§6[MVP§r§d++§r§6] PLAYER§r§c isn't on your friends list!§r§9§m
+     * -----------------------------------------------------§r
+     * </pre>
+     */
+    private static final Pattern BEST_FRIEND_CHAT_PATTERN = Pattern.compile("-{20,}\\s*(?:\\[[^]]+] )?(\\w+)([^\n]+)\\s*-{20,}");
+
+    private BestFriendsListGui bestFriendsGui;
+    private GuiButton btnRemoveAll;
+    private GuiButton btnHelp;
+    private GuiButton btnClose;
+    private boolean isMigrating = false;
+
+    @Override
+    public void onGuiClosed() {
+        MinecraftForge.EVENT_BUS.unregister(this);
+        if (Cowlection.getInstance().getFriendsHandler().getBestFriendsListSize() == 0) {
+            new TickDelay(() -> Cowlection.getInstance().getChatHelper().sendMessage(new MooChatComponent("[§2Cowlection§a] All Cowlection best friends have been migrated or removed.").green()
+                    .appendFreshSibling(new MooChatComponent("You can now use Hypixel's commands instead: §b[open patch notes]").green().setUrl("https://hypixel.net/threads/social-update-online-status-best-friends-more.4638020/")
+                            .appendFreshSibling(new MooChatComponent(" §6➊ §aView best friends list: §2/friend list best §aor §2/fl best").green().setSuggestCommand("/fl best"))
+                            .appendFreshSibling(new MooChatComponent(" §6➋ §aAdd or remove best friend: §2/friend best <player name>").green().setSuggestCommand("/f best ")))),
+                    isMigrating ? 20 : 0);
+        }
+    }
+
+    // priority = highest to ignore other mods modifying the chat output
+    @SubscribeEvent(priority = EventPriority.HIGHEST, receiveCanceled = true)
+    public void onBestFriendsAddResponse(ClientChatReceivedEvent e) {
+        if (e.type == 2 || !isMigrating) return;
+        String text = EnumChatFormatting.getTextWithoutFormattingCodes(e.message.getUnformattedText());
+        if (!text.startsWith("-----------------------------") || !text.endsWith("-----------------------------"))
+            return;
+        Matcher matcher = BEST_FRIEND_CHAT_PATTERN.matcher(text);
+        if (!matcher.matches()) return;
+        String username = matcher.group(1);
+        String rawFriendStatus = matcher.group(2);
+
+        int friendStatus;
+        if (rawFriendStatus.contains("no longer a best friend")) {
+            friendStatus = 0xFFaa0000;
+        } else if (rawFriendStatus.contains("now a best friend")) {
+            friendStatus = 0xFF00aa00;
+        } else if (rawFriendStatus.contains("isn't on your friends list")) {
+            friendStatus = 0xFFff5555;
+        } else {
+            return;
+        }
+
+        this.bestFriendsGui.setBestFriendStatus(username, friendStatus);
+    }
+
+    @Override
+    public void initGui() {
+        if (Cowlection.getInstance().getFriendsHandler().getBestFriendsListSize() == 0) {
+            mc.displayGuiScreen(null);
+            return;
+        }
+        MinecraftForge.EVENT_BUS.register(this);
+
+        this.buttonList.clear();
+
+        // remove all button
+        this.buttonList.add(this.btnRemoveAll = new GuiButtonExt(3, this.width - 69, 4, 20, 20, EnumChatFormatting.DARK_RED + "♺"));
+
+        // help button
+        this.buttonList.add(this.btnHelp = new GuiButtonExt(1, this.width - 47, 4, 20, 20, "?"));
+        // close button
+        this.buttonList.add(this.btnClose = new GuiButtonExt(2, this.width - 25, 4, 20, 20, EnumChatFormatting.RED + "X"));
+
+        // scrollable gui
+        this.bestFriendsGui = new BestFriendsListGui(this.width / 2, this.height, this.isMigrating);
+    }
+
+    @Override
+    public void drawScreen(int mouseX, int mouseY, float partialTicks) {
+        this.drawGradientRect(this.width / 2, 0, this.width, this.height, -1072689136, -804253680); // from #drawDefaultBackground
+        super.drawScreen(mouseX, mouseY, partialTicks);
+        GlStateManager.pushMatrix();
+        double scaleFactor = 1.3;
+        GlStateManager.scale(scaleFactor, scaleFactor, 0);
+        this.drawString(this.fontRendererObj, "Cowlection: Best friends migration", (int) ((this.width / 2 + 8) / scaleFactor), 6, 0xFFCC00);
+        GlStateManager.popMatrix();
+        this.bestFriendsGui.drawScreen(mouseX, mouseY, partialTicks);
+        if (btnRemoveAll.isMouseOver()) {
+            List<String> removeAllTooltip = new ArrayList<>();
+            removeAllTooltip.add(EnumChatFormatting.RED + "Discard/Remove " + EnumChatFormatting.DARK_RED + "all " + EnumChatFormatting.RED + "Cowlection best friends");
+            drawHoveringText(removeAllTooltip, mouseX, mouseY);
+        } else if (btnHelp.isMouseOver()) {
+            List<String> helpTooltip = new ArrayList<>();
+            helpTooltip.add("" + EnumChatFormatting.GOLD + EnumChatFormatting.BOLD + "Cowlection: Best friends migration");
+            helpTooltip.add(EnumChatFormatting.GREEN + "If you have any questions or need help with the best friends list migration:");
+            helpTooltip.add(EnumChatFormatting.GREEN + "Join the Cowshed discord and open a ticket!");
+            drawHoveringText(helpTooltip, mouseX, mouseY);
+        } else if (btnClose.isMouseOver()) {
+            drawHoveringText(Arrays.asList(EnumChatFormatting.RED + "Save & Close", "" + EnumChatFormatting.GRAY + EnumChatFormatting.ITALIC + "Hint:" + EnumChatFormatting.RESET + " alternatively press ESC"), mouseX, mouseY);
+        }
+    }
+
+    @Override
+    protected void actionPerformed(GuiButton button) {
+        if (button == btnRemoveAll) {
+            // show best friends deletion confirmation screen
+            GuiYesNo guiDeleteRule = new GuiYesNo(MooConfigBestFriendsMigration.this,
+                    EnumChatFormatting.RED + "Discard/remove " + EnumChatFormatting.DARK_RED + Cowlection.getInstance().getFriendsHandler().getBestFriendsListSize() + " (= all)" + EnumChatFormatting.RED + " from Cowlection best friends list?",
+                    EnumChatFormatting.RED + "This action cannot be reverted!",
+                    1337);
+            mc.displayGuiScreen(guiDeleteRule);
+        } else if (button == btnHelp) {
+            GuiConfirmOpenLink guiHelp = new GuiConfirmOpenLink(this, Cowlection.INVITE_URL, 9001, true);
+            guiHelp.disableSecurityWarning();
+            mc.displayGuiScreen(guiHelp);
+        } else if (button == btnClose) {
+            mc.displayGuiScreen(null);
+        }
+    }
+
+    @Override
+    public void confirmClicked(boolean result, int id) {
+        super.confirmClicked(result, id);
+        if (result) {
+            if (id == 1337) {
+                Cowlection.getInstance().getFriendsHandler().removeAllBestFriends();
+            } else if (id == 9001) {
+                try {
+                    Desktop.getDesktop().browse(new URI(Cowlection.INVITE_URL));
+                } catch (Throwable throwable) {
+                    Cowlection.getInstance().getLogger().error("Couldn't open link " + Cowlection.INVITE_URL, throwable);
+                }
+            } else if (id < 500) {
+                // user confirmed rule deletion
+                BestFriendsListGui.BestFriendEntry removedBestFriendEntry = this.bestFriendsGui.bestFriendEntries.get(id);
+                if (removedBestFriendEntry != null) {
+                    removedBestFriendEntry.removeBestFriend();
+                }
+            }
+        }
+        mc.displayGuiScreen(this);
+    }
+
+    /**
+     * Based on GuiModList.Info
+     */
+    private class BestFriendsListGui extends GuiScrollingList {
+        private final MooChatComponent BEST_FRIENDS_MIGRATIONS_GUIDE = new MooChatComponent("The 'best friends list' feature has been removed from this mod, as Hypixel added a very similar feature ").red()
+                .appendSibling(new MooChatComponent("[click to open patch notes]")
+                        .darkAqua()
+                        .setUrl("https://hypixel.net/threads/social-update-online-status-best-friends-more.4638020/"))
+                .appendFreshSibling(new MooChatComponent("You can either…\n §e➊ §ftry to add someone from your Cowlection best friends list to your Hypixel best friends list (§2+§f button), or\n §e➋ §fdiscard/remove them from your Cowlection best friends list without trying to add them on Hypixel as a best friend (§c♺§f button)."
+                        + "\n§4§l❢ §eOnly players who are already on your §6normal §eHypixel friends list can be added as a best friends."))
+                .appendFreshSibling(new MooChatComponent("➜ Start migrating my clicking the button at the top.").gray());
+
+        private final List<IChatComponent> introduction;
+        private final List<BestFriendEntry> bestFriendEntries;
+        private final boolean isMigrating;
+        private final GuiButton startMigratingButton;
+        private BestFriendEntry hoveredEntry;
+
+        public BestFriendsListGui(int width, int height, boolean isMigrating) {
+            super(MooConfigBestFriendsMigration.this.mc,
+                    width - 6, height,
+                    27, height - 3, width + 3, 18,
+                    MooConfigBestFriendsMigration.this.width, MooConfigBestFriendsMigration.this.height);
+            setHeaderInfo(true, isMigrating ? 20 : 30);
+
+            this.bestFriendEntries = isMigrating ? convertToEntries() : Collections.emptyList();
+            this.introduction = isMigrating ? Collections.emptyList() : this.resizeContent();
+            this.startMigratingButton = isMigrating ? null : new GuiButtonExt(21000, this.left + 25, 0, 170, 20, EnumChatFormatting.DARK_GREEN + "➜ " + EnumChatFormatting.GREEN + "Start best friends migration");
+            this.isMigrating = isMigrating;
+        }
+
+        private List<BestFriendEntry> convertToEntries() {
+            Set<String> bestFriends = Cowlection.getInstance().getFriendsHandler().getBestFriends();
+
+            return bestFriends.stream().map(BestFriendEntry::new).collect(Collectors.toList());
+        }
+
+        public void setBestFriendStatus(String username, int friendStatus) {
+            for (BestFriendEntry bestFriendEntry : this.bestFriendEntries) {
+                if (bestFriendEntry.bestFriend.equals(username)) {
+                    bestFriendEntry.setStatus(friendStatus);
+                }
+            }
+        }
+
+        @Override
+        protected void drawHeader(int entryRight, int relativeY, Tessellator tess) {
+            if (relativeY < 0) return;
+            boolean hasEntriesLeft = this.bestFriendEntries.size() > 0;
+            if (hasEntriesLeft) {
+                MooConfigBestFriendsMigration.this.fontRendererObj.drawStringWithShadow(EnumChatFormatting.GREEN + "Migrate " + EnumChatFormatting.WHITE + "or " + EnumChatFormatting.RED + "remove " + EnumChatFormatting.WHITE + "best friend", this.left + 6, relativeY + 5, 0xFFCC00);
+            } else if (!isMigrating && startMigratingButton != null) {
+                this.startMigratingButton.yPosition = relativeY + 3;
+                this.startMigratingButton.drawButton(mc, mouseX, mouseY);
+            }
+        }
+
+        @Override
+        protected void clickHeader(int x, int y) {
+            super.clickHeader(x, y);
+            if (this.startMigratingButton.isMouseOver()) {
+                MooConfigBestFriendsMigration.this.isMigrating = true;
+                MooConfigBestFriendsMigration.this.initGui();
+            }
+        }
+
+        private List<IChatComponent> resizeContent() {
+            return new ArrayList<>(GuiUtilRenderComponents.splitText(BEST_FRIENDS_MIGRATIONS_GUIDE,
+                    this.listWidth - 8, MooConfigBestFriendsMigration.this.fontRendererObj, false, true));
+        }
+
+
+        @Override
+        protected int getSize() {
+            return isMigrating ? this.bestFriendEntries.size() : this.introduction.size();
+        }
+
+        @Override
+        protected void elementClicked(int index, boolean doubleClick) {
+            if (isMigrating) {
+                this.bestFriendEntries.get(index).mousePressed(mouseX, mouseY, index);
+            } else {
+                IChatComponent line = introduction.get(index);
+                if (line != null) {
+                    int xOffset = this.left;
+                    for (IChatComponent part : line) {
+                        if (!(part instanceof ChatComponentText)) {
+                            continue;
+                        }
+                        xOffset += MooConfigBestFriendsMigration.this.fontRendererObj.getStringWidth(((ChatComponentText) part).getChatComponentText_TextValue());
+                        if (xOffset >= this.mouseX) {
+                            MooConfigBestFriendsMigration.this.handleComponentClick(part);
+                            break;
+                        }
+                    }
+                }
+            }
+        }
+
+        @Override
+        protected boolean isSelected(int index) {
+            return false;
+        }
+
+        @Override
+        protected void drawBackground() {
+        }
+
+        @Override
+        public void drawScreen(int mouseX, int mouseY, float partialTicks) {
+            hoveredEntry = null;
+            super.drawScreen(mouseX, mouseY, partialTicks);
+            if (hoveredEntry != null) {
+                hoveredEntry.drawToolTip(mouseX, mouseY);
+            }
+        }
+
+        @Override
+        protected void drawSlot(int slotIdx, int entryRight, int slotTop, int slotBuffer, Tessellator tess) {
+            if (this.isMigrating) {
+                BestFriendEntry bestFriendEntry = bestFriendEntries.get(slotIdx);
+                if (bestFriendEntry != null) {
+                    bestFriendEntry.drawEntry(this.left + 4, slotTop, this.right - 4);
+                    if (mouseY >= slotTop && mouseY < slotTop + this.slotHeight) {
+                        // mouse is over this slot
+                        hoveredEntry = bestFriendEntry;
+                    }
+                }
+            } else {
+                IChatComponent line = introduction.get(slotIdx);
+                if (line != null) {
+                    MooConfigBestFriendsMigration.this.fontRendererObj.drawStringWithShadow(line.getFormattedText(), this.left + 4, slotTop, 0xFFffffff);
+                }
+            }
+        }
+
+        /**
+         * Based on:
+         *
+         * @see GuiConfigEntries.StringEntry
+         * @see GuiEditArrayEntries.BaseEntry
+         */
+        private class BestFriendEntry {
+            private final String bestFriend;
+            private final GuiButton btnAdd;
+            private final List<String> btnAddTooltip;
+            private final GuiButton btnRemove;
+            private final List<String> btnRemoveTooltip;
+            private int friendStatus = 0xFFffffff;
+
+            public BestFriendEntry(String bestFriend) {
+                this.bestFriend = bestFriend;
+
+                this.btnAdd = new GuiButtonExt(50, 0, 0, 18, 16, "+");
+                this.btnAdd.packedFGColour = GuiUtils.getColorCode('2', true);
+                this.btnAddTooltip = new ArrayList<>();
+                this.btnAddTooltip.add("Try to §aadd §e" + bestFriend + " §fto Hypixel best friends list");
+                this.btnAddTooltip.add("§7Runs the command §8/friend best " + bestFriend);
+
+                this.btnRemove = new GuiButtonExt(50, 0, 0, 18, 16, "♺");
+                this.btnRemove.packedFGColour = GuiUtils.getColorCode('c', true);
+                this.btnRemoveTooltip = new ArrayList<>();
+                this.btnRemoveTooltip.add("§cRemove §e" + bestFriend + " §ffrom your Cowlection best friends list");
+                this.btnRemoveTooltip.add("§7Runs the command §8/moo remove " + bestFriend);
+            }
+
+            public void setStatus(int friendStatus) {
+                this.friendStatus = friendStatus;
+            }
+
+            public void drawEntry(int x, int y, int right) {
+                int currentX = x;
+
+                btnAdd.xPosition = currentX;
+                btnAdd.yPosition = y - 1;
+                btnAdd.drawButton(mc, mouseX, mouseY);
+                currentX += btnAdd.width + 3;
+
+                btnRemove.xPosition = currentX;
+                btnRemove.yPosition = y - 1;
+                btnRemove.drawButton(mc, mouseX, mouseY);
+                currentX += btnRemove.width + 3;
+
+                MooConfigBestFriendsMigration.this.fontRendererObj.drawStringWithShadow(this.bestFriend, (currentX + 1), (y + 4), friendStatus);
+
+                if (this.friendStatus < 0xFFffffff) {
+                    drawRect(x, y - 1, right, y + 15, 0x99666666);
+                }
+            }
+
+            public void drawToolTip(int mouseX, int mouseY) {
+                if (btnAdd.isMouseOver()) {
+                    drawHoveringText(this.btnAddTooltip, mouseX, mouseY);
+                } else if (btnRemove.isMouseOver()) {
+                    drawHoveringText(btnRemoveTooltip, mouseX, mouseY);
+                }
+            }
+
+            public void mousePressed(int mouseX, int mouseY, int slotIndex) {
+                if (btnAdd.mousePressed(mc, mouseX, mouseY)) {
+                    Minecraft.getMinecraft().thePlayer.sendChatMessage("/friend best " + this.bestFriend);
+                    this.removeBestFriend();
+                } else if (btnRemove.mousePressed(mc, mouseX, mouseY)) {
+                    if (isShiftKeyDown()) {
+                        this.removeBestFriend();
+                    } else {
+                        // show best friend deletion confirmation screen
+                        GuiYesNo guiDeleteRule = new GuiYesNo(MooConfigBestFriendsMigration.this,
+                                EnumChatFormatting.RED + "Discard/remove " + EnumChatFormatting.YELLOW + bestFriend + EnumChatFormatting.RESET + " from Cowlection best friends list?",
+                                EnumChatFormatting.GRAY + "Hint: You can hold " + EnumChatFormatting.WHITE + "SHIFT " + EnumChatFormatting.GRAY + "while clicking the " + EnumChatFormatting.RED + "♺ " + EnumChatFormatting.GRAY + "button to skip this confirmation screen.",
+                                slotIndex);
+                        mc.displayGuiScreen(guiDeleteRule);
+                    }
+                }
+            }
+
+            public void removeBestFriend() {
+                Cowlection.getInstance().getFriendsHandler().removeBestFriend(this.bestFriend);
+                this.friendStatus = 0xFFbbbbbb;
+                if (Cowlection.getInstance().getFriendsHandler().getBestFriendsListSize() == 0) {
+                    mc.displayGuiScreen(null);
+                }
+            }
+        }
+    }
+}
diff --git a/src/main/java/de/cowtipper/cowlection/error/ApiAskPolitelyErrorEvent.java b/src/main/java/de/cowtipper/cowlection/error/ApiAskPolitelyErrorEvent.java
deleted file mode 100644
index 5da2dfb..0000000
--- a/src/main/java/de/cowtipper/cowlection/error/ApiAskPolitelyErrorEvent.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package de.cowtipper.cowlection.error;
-
-import net.minecraftforge.fml.common.eventhandler.Event;
-
-public class ApiAskPolitelyErrorEvent extends Event {
-    private final String playerName;
-
-    public ApiAskPolitelyErrorEvent(String playerName) {
-        this.playerName = playerName;
-    }
-
-    public String getPlayerName() {
-        return playerName;
-    }
-}
diff --git a/src/main/java/de/cowtipper/cowlection/handler/FriendsHandler.java b/src/main/java/de/cowtipper/cowlection/handler/FriendsHandler.java
index 9034b17..3691d12 100644
--- a/src/main/java/de/cowtipper/cowlection/handler/FriendsHandler.java
+++ b/src/main/java/de/cowtipper/cowlection/handler/FriendsHandler.java
@@ -2,213 +2,57 @@ package de.cowtipper.cowlection.handler;
 
 import com.google.gson.JsonParseException;
 import com.google.gson.reflect.TypeToken;
-import com.mojang.realmsclient.util.Pair;
 import de.cowtipper.cowlection.Cowlection;
-import de.cowtipper.cowlection.command.exception.ApiContactException;
-import de.cowtipper.cowlection.command.exception.MooCommandException;
+import de.cowtipper.cowlection.config.MooConfig;
 import de.cowtipper.cowlection.data.Friend;
-import de.cowtipper.cowlection.data.HyPlayerData;
-import de.cowtipper.cowlection.util.*;
+import de.cowtipper.cowlection.util.GsonUtils;
 import io.netty.util.internal.ConcurrentSet;
-import net.minecraft.client.Minecraft;
-import net.minecraft.command.PlayerNotFoundException;
-import net.minecraft.event.ClickEvent;
-import net.minecraft.event.HoverEvent;
-import net.minecraft.util.ChatComponentText;
-import net.minecraft.util.ChatStyle;
-import net.minecraft.util.EnumChatFormatting;
 import org.apache.commons.io.FileUtils;
-import org.apache.commons.lang3.time.DurationFormatUtils;
 
 import java.io.File;
 import java.io.IOException;
 import java.lang.reflect.Type;
 import java.nio.charset.StandardCharsets;
-import java.util.*;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.atomic.AtomicInteger;
+import java.util.Set;
+import java.util.TreeSet;
 import java.util.stream.Collectors;
 
 public class FriendsHandler {
-    private static final long UPDATE_FREQUENCY_DEFAULT = TimeUnit.HOURS.toMillis(10);
     private final Cowlection main;
     private final Set<Friend> bestFriends = new ConcurrentSet<>();
     private final File bestFriendsFile;
-    private final AtomicInteger bestFriendNameCheckingQueue = new AtomicInteger();
-    private final AtomicInteger bestFriendOnlineStatusQueue = new AtomicInteger();
-    private final Set<String> bestFriendsOnlineStatusWithApiErrors = new ConcurrentSet<>();
-    private long nextBestFriendOnlineCheck = 0;
 
     public FriendsHandler(Cowlection main, File friendsFile) {
         this.main = main;
         this.bestFriendsFile = friendsFile;
         loadBestFriends();
-        doBestFriendsNameChangeCheck();
-    }
-
-    public boolean isBestFriend(String playerName, boolean ignoreCase) {
-        if (ignoreCase) {
-            return bestFriends.stream().map(Friend::getName).anyMatch(playerName::equalsIgnoreCase);
-        } else {
-            return bestFriends.stream().map(Friend::getName).anyMatch(playerName::equals);
-        }
-    }
-
-    public void addBestFriend(String name) {
-        if (name.isEmpty()) {
-            return;
-        }
-
-        ApiUtils.fetchFriendData(name, friend -> {
-            if (friend == null) {
-                throw new ApiContactException("Mojang", "didn't add " + name + " as a best friend.");
-            } else if (friend.equals(Friend.FRIEND_NOT_FOUND)) {
-                throw new PlayerNotFoundException("There is no player with the name " + EnumChatFormatting.DARK_RED + name + EnumChatFormatting.RED + ".");
-            } else {
-                boolean added = bestFriends.add(friend);
-                if (added) {
-                    main.getChatHelper().sendMessage(EnumChatFormatting.GREEN, "Added " + EnumChatFormatting.DARK_GREEN + friend.getName() + EnumChatFormatting.GREEN + " as best friend.");
-                    saveBestFriends();
-                }
-            }
-        });
     }
 
     public boolean removeBestFriend(String name) {
         boolean removed = bestFriends.removeIf(friend -> friend.getName().equalsIgnoreCase(name));
         if (removed) {
+            if (bestFriends.size() == 0) {
+                MooConfig.doBestFriendsOnlineCheck = false;
+                main.getConfig().syncFromFields();
+            }
             saveBestFriends();
         }
         return removed;
     }
 
-    public Set<String> getBestFriends() {
-        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);
-    }
-
-    public void doBestFriendsNameChangeCheck() {
-        bestFriends.stream().filter(friend -> System.currentTimeMillis() - friend.getLastChecked() > UPDATE_FREQUENCY_DEFAULT)
-                .forEach(friend1 -> {
-                    bestFriendNameCheckingQueue.incrementAndGet();
-                    doBestFriendNameChangeCheck(friend1, false);
-                });
+    public void removeAllBestFriends() {
+        bestFriends.clear();
+        MooConfig.doBestFriendsOnlineCheck = false;
+        main.getConfig().syncFromFields();
+        saveBestFriends();
     }
 
-    public void doBestFriendNameChangeCheck(Friend friend, boolean isCommandTriggered) {
-        ApiUtils.fetchCurrentName(friend, newName -> {
-            if (newName == null) {
-                // skipping friend, something went wrong with API request
-                if (isCommandTriggered) {
-                    throw new ApiContactException("Mojang", "couldn't check " + EnumChatFormatting.DARK_RED + friend.getName() + EnumChatFormatting.RED + " (possible) new player name");
-                }
-            } else if (newName.equals(ApiUtils.UUID_NOT_FOUND)) {
-                throw new PlayerNotFoundException("How did you manage to get a unique id on your best friends list that has no name attached to it?");
-            } else if (newName.equals(friend.getName())) {
-                // name hasn't changed, only updating lastChecked timestamp
-                Friend bestFriend = getBestFriend(friend.getUuid());
-                if (!bestFriend.equals(Friend.FRIEND_NOT_FOUND)) {
-                    bestFriend.setLastChecked(System.currentTimeMillis());
-                    if (isCommandTriggered) {
-                        throw new MooCommandException(friend.getName() + " hasn't changed their name");
-                    }
-                }
-            } else {
-                // name has changed
-                main.getChatHelper().sendMessage(new ChatComponentText("Your best friend " + EnumChatFormatting.DARK_GREEN + friend.getName() + EnumChatFormatting.GREEN + " changed the name to " + EnumChatFormatting.DARK_GREEN + newName + EnumChatFormatting.GREEN + ".").setChatStyle(new ChatStyle()
-                        .setColor(EnumChatFormatting.GREEN)
-                        .setChatClickEvent(new ClickEvent(ClickEvent.Action.OPEN_URL, "https://namemc.com/search?q=" + newName))
-                        .setChatHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, new ChatComponentText(EnumChatFormatting.YELLOW + "View " + EnumChatFormatting.GOLD + newName + EnumChatFormatting.YELLOW + "'s name history on namemc.com")))));
-
-                Friend bestFriend = getBestFriend(friend.getUuid());
-                if (!bestFriend.equals(Friend.FRIEND_NOT_FOUND)) {
-                    bestFriend.setName(newName);
-                    bestFriend.setLastChecked(System.currentTimeMillis());
-                }
-            }
-            if (isCommandTriggered) {
-                saveBestFriends();
-            } else {
-                int remainingFriendsToCheck = bestFriendNameCheckingQueue.decrementAndGet();
-                if (remainingFriendsToCheck == 0) {
-                    // we're done with checking for name changes, save updates to file!
-                    saveBestFriends();
-                }
-            }
-        });
-    }
-
-    public void runBestFriendsOnlineCheck(boolean isCommandTriggered) {
-        long now = System.currentTimeMillis();
-        int delay = (isCommandTriggered ? 5 : 1) * 60000;
-        if (nextBestFriendOnlineCheck < now) {
-            // ^ prevent too frequent checks
-            nextBestFriendOnlineCheck = now + delay;
-            bestFriendOnlineStatusQueue.set(0);
-            bestFriendsOnlineStatusWithApiErrors.clear();
-            final Map<String, HyPlayerData> onlineBestFriends = new ConcurrentHashMap<>();
-
-            main.getLogger().info("Checking best friends online status... (might take a bit)");
-
-            for (Friend bestFriend : bestFriends) {
-                bestFriendOnlineStatusQueue.incrementAndGet();
-                ApiUtils.fetchHyPlayerDetails(bestFriend, hyPlayerData -> {
-                    if (hyPlayerData != null && !hyPlayerData.hasNeverLoggedOut() && hyPlayerData.getLastLogin() > hyPlayerData.getLastLogout()) {
-                        // online & not hiding their online status
-                        main.getPlayerCache().addBestFriend(bestFriend.getName());
-
-                        onlineBestFriends.put(bestFriend.getName(), hyPlayerData);
-                    }
-
-                    int remainingFriendsToCheck = bestFriendOnlineStatusQueue.decrementAndGet();
-                    if (remainingFriendsToCheck == 0 && Minecraft.getMinecraft().thePlayer != null) {
-                        // we're done with checking for online status
-                        MooChatComponent bestFriendsComponent = new MooChatComponent("⬤ Online best friends ("
-                                + EnumChatFormatting.DARK_GREEN + onlineBestFriends.size() + EnumChatFormatting.GREEN + "/" + EnumChatFormatting.DARK_GREEN + bestFriends.size() + EnumChatFormatting.GREEN + "): ").green();
-                        if (onlineBestFriends.isEmpty()) {
-                            bestFriendsComponent.appendText("none...");
-                        } else {
-                            TreeMap<String, HyPlayerData> onlineBestFriendsSorted = new TreeMap<>(onlineBestFriends);
-                            for (Map.Entry<String, HyPlayerData> bestFriendData : onlineBestFriendsSorted.entrySet()) {
-                                if (bestFriendsComponent.getSiblings().size() > 0) {
-                                    bestFriendsComponent.appendSibling(new MooChatComponent(", ").green());
-                                }
-                                HyPlayerData hyBestFriendData = bestFriendData.getValue();
-                                Pair<String, String> lastOnline = Utils.getDurationAsWords(hyBestFriendData.getLastLogin());
-                                bestFriendsComponent.appendSibling(new MooChatComponent(bestFriendData.getKey()).darkGreen()
-                                        .setHover(new MooChatComponent(hyBestFriendData.getLastGame()).yellow().appendFreshSibling(new MooChatComponent("Online for " + (lastOnline.second() != null ? lastOnline.second() : lastOnline.first())).white())));
-                            }
-                        }
-                        if (bestFriendsOnlineStatusWithApiErrors.size() > 0) {
-                            String bestFriendsWithApiErrors = String.join(EnumChatFormatting.RED + ", " + EnumChatFormatting.DARK_RED, bestFriendsOnlineStatusWithApiErrors);
-                            bestFriendsComponent.appendFreshSibling(new MooChatComponent("Failed to check " + EnumChatFormatting.DARK_RED + bestFriendsOnlineStatusWithApiErrors.size() + EnumChatFormatting.RED + " best friends' online status due to Hypixel API errors: " + EnumChatFormatting.DARK_RED + bestFriendsWithApiErrors).red());
-                            bestFriendsOnlineStatusWithApiErrors.clear();
-                        }
-                        if (isCommandTriggered) {
-                            main.getChatHelper().sendMessage(bestFriendsComponent);
-                        } else {
-                            // delay by 4 seconds so the message doesn't get buried due to the server welcome messages
-                            new TickDelay(() -> main.getChatHelper().sendMessage(bestFriendsComponent), 80);
-                        }
-                    }
-                });
-            }
-        } else {
-            new TickDelay(() -> main.getChatHelper().sendMessage(EnumChatFormatting.RED, "Couldn't check best friends online status because it has not been long enough since the last check. Next check via " + EnumChatFormatting.WHITE + "/moo online" + EnumChatFormatting.RED + " available in " + DurationFormatUtils.formatDurationWords(nextBestFriendOnlineCheck - System.currentTimeMillis(), true, true)),
-                    isCommandTriggered ? 1 : 100);
-        }
+    public Set<String> getBestFriends() {
+        return bestFriends.stream().map(Friend::getName).collect(Collectors.toCollection(TreeSet::new));
     }
 
-    public void addErroredApiRequest(String playerName) {
-        bestFriendsOnlineStatusWithApiErrors.add(playerName);
+    public int getBestFriendsListSize() {
+        return bestFriends.size();
     }
 
     public synchronized void saveBestFriends() {
@@ -222,10 +66,7 @@ public class FriendsHandler {
 
     private void loadBestFriends() {
         try {
-            boolean createdNewFile = this.bestFriendsFile.createNewFile();
-
-            this.bestFriends.clear();
-            if (!createdNewFile) {
+            if (this.bestFriendsFile.exists()) {
                 String bestFriendsData = FileUtils.readFileToString(this.bestFriendsFile, StandardCharsets.UTF_8);
                 if (bestFriendsData.length() > 0) {
                     this.bestFriends.addAll(parseJson(bestFriendsData));
diff --git a/src/main/java/de/cowtipper/cowlection/handler/PlayerCache.java b/src/main/java/de/cowtipper/cowlection/handler/PlayerCache.java
index 6eb7904..caae8d5 100644
--- a/src/main/java/de/cowtipper/cowlection/handler/PlayerCache.java
+++ b/src/main/java/de/cowtipper/cowlection/handler/PlayerCache.java
@@ -8,7 +8,7 @@ import java.util.TreeSet;
 @SuppressWarnings("UnstableApiUsage")
 public class PlayerCache {
     private final EvictingQueue<String> nameCache = EvictingQueue.create(50);
-    private final EvictingQueue<String> bestFriendCache = EvictingQueue.create(100);
+    private final EvictingQueue<String> friendCache = EvictingQueue.create(100);
 
     public PlayerCache() {
     }
@@ -19,25 +19,25 @@ public class PlayerCache {
         nameCache.add(name);
     }
 
-    public void addBestFriend(String name) {
+    public void addFriend(String name) {
         // remove old entry (if exists) to 'push' name to the end of the queue
-        bestFriendCache.remove(name);
-        bestFriendCache.add(name);
+        friendCache.remove(name);
+        friendCache.add(name);
     }
 
-    public void removeBestFriend(String name) {
-        bestFriendCache.remove(name);
+    public void removeFriend(String name) {
+        friendCache.remove(name);
     }
 
     public SortedSet<String> getAllNamesSorted() {
         SortedSet<String> nameList = new TreeSet<>(String.CASE_INSENSITIVE_ORDER);
-        nameList.addAll(bestFriendCache);
+        nameList.addAll(friendCache);
         nameList.addAll(nameCache);
         return nameList;
     }
 
     public void clearAllCaches() {
         nameCache.clear();
-        bestFriendCache.clear();
+        friendCache.clear();
     }
 }
diff --git a/src/main/java/de/cowtipper/cowlection/listener/ChatListener.java b/src/main/java/de/cowtipper/cowlection/listener/ChatListener.java
index 243aa4a..83e7cb1 100644
--- a/src/main/java/de/cowtipper/cowlection/listener/ChatListener.java
+++ b/src/main/java/de/cowtipper/cowlection/listener/ChatListener.java
@@ -9,11 +9,9 @@ import de.cowtipper.cowlection.util.ApiUtils;
 import de.cowtipper.cowlection.util.MooChatComponent;
 import de.cowtipper.cowlection.util.Utils;
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.audio.SoundCategory;
 import net.minecraft.client.gui.GuiChat;
 import net.minecraft.client.gui.GuiControls;
 import net.minecraft.client.gui.GuiNewChat;
-import net.minecraft.util.ChatComponentText;
 import net.minecraft.util.EnumChatFormatting;
 import net.minecraft.util.IChatComponent;
 import net.minecraftforge.client.ClientCommandHandler;
@@ -31,12 +29,7 @@ import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 public class ChatListener {
-    /**
-     * Examples:
-     * - §aFriend > §r§aNAME §r§eleft.§r
-     * - §2Guild > §r§aNAME §r§eleft.§r
-     */
-    private static final Pattern LOGIN_LOGOUT_NOTIFICATION = Pattern.compile("^(?<type>§aFriend|§2Guild) > §r(?<rank>§[0-9a-f])(?<playerName>\\w+)(?<joinLeaveSuffix> §r§e(?<joinedLeft>joined|left)\\.)§r$");
+    private static final Pattern FRIEND_LOGIN_LOGOUT_NOTIFICATION = Pattern.compile("^Friend > (?<playerName>\\w+) (?<joinedLeft>joined|left)\\.$");
     private static final Pattern CHAT_MESSAGE_RECEIVED_PATTERN = Pattern.compile("^(?:Party|Guild) > (?:\\[.*?] )?(\\w+)(?: \\[.*?])?: ");
     private static final Pattern PRIVATE_MESSAGE_RECEIVED_PATTERN = Pattern.compile("^From (?:\\[.*?] )?(\\w+): ");
     private static final Pattern PARTY_OR_GAME_INVITE_PATTERN = Pattern.compile("^-+\\s+(?:\\[.*?] )?(\\w+) has invited you ");
@@ -50,60 +43,6 @@ public class ChatListener {
     }
 
     @SubscribeEvent
-    public void onLogInOutMessage(ClientChatReceivedEvent e) {
-        if (e.type != 2) { // normal chat or system msg (not above action bar)
-            String text = e.message.getUnformattedText();
-            Matcher notificationMatcher = LOGIN_LOGOUT_NOTIFICATION.matcher(e.message.getFormattedText());
-
-            if (MooConfig.doMonitorNotifications() && text.length() < 42 && notificationMatcher.matches()) {
-                // we got a login or logout notification!
-                main.getLogger().info(text);
-
-                String type = notificationMatcher.group("type");
-                String rank = notificationMatcher.group("rank");
-                String playerName = notificationMatcher.group("playerName");
-                String joinLeaveSuffix = notificationMatcher.group("joinLeaveSuffix");
-                String joinedLeft = notificationMatcher.group("joinedLeft");
-
-                boolean isBestFriend = main.getFriendsHandler().isBestFriend(playerName, false);
-                if (isBestFriend) {
-                    switch (joinedLeft) {
-                        case "joined":
-                            main.getPlayerCache().addBestFriend(playerName);
-                            if (MooConfig.enableBestFriendNotificationSound && Minecraft.getMinecraft().thePlayer != null) {
-                                Minecraft.getMinecraft().thePlayer.playSound("random.pop", Minecraft.getMinecraft().gameSettings.getSoundLevel(SoundCategory.MASTER), 1);
-                            }
-                            break;
-                        case "left":
-                            main.getPlayerCache().removeBestFriend(playerName);
-                            break;
-                        default:
-                            // player neither left nor joined?!
-                            return;
-                    }
-                    if (MooConfig.showBestFriendNotifications) {
-                        // replace default (friend/guild) notification with best friend notification
-                        e.message = new ChatComponentText("" + EnumChatFormatting.DARK_GREEN + EnumChatFormatting.BOLD + "Best friend" + EnumChatFormatting.DARK_GREEN + " > " + EnumChatFormatting.RESET + rank + playerName + joinLeaveSuffix);
-                        return;
-                    }
-                }
-                if (!MooConfig.showFriendNotifications && "§aFriend".equals(type)) {
-                    e.setCanceled(true);
-                } else if (!MooConfig.showGuildNotifications && "§2Guild".equals(type)) {
-                    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)) {
-                    main.getChatHelper().sendMessage(EnumChatFormatting.YELLOW, "[" + Cowlection.MODNAME + "] Verifying the new API key...");
-                    main.getMoo().setMooIfValid(moo, true);
-                }
-            }
-        }
-    }
-
-    @SubscribeEvent
     public void onClickOnChat(GuiScreenEvent.MouseInputEvent.Pre e) {
         if (Mouse.getEventButton() < 0) {
             // no button press, just mouse-hover
@@ -159,45 +98,59 @@ public class ChatListener {
     // priority = highest to ignore other mods modifying the chat output
     @SubscribeEvent(priority = EventPriority.HIGHEST, receiveCanceled = true)
     public void onChatMsgReceive(ClientChatReceivedEvent e) {
-        if (e.type != 2) {
-            String messageSender = null;
-
-            String message = EnumChatFormatting.getTextWithoutFormattingCodes(e.message.getUnformattedText());
+        if (e.type == 2) return; // above action bar
+        String message = EnumChatFormatting.getTextWithoutFormattingCodes(e.message.getUnformattedText());
+        if (message.length() < 42) {
+            Matcher notificationMatcher = FRIEND_LOGIN_LOGOUT_NOTIFICATION.matcher(message);
+            if (notificationMatcher.matches()) {
+                // we got a friend login or logout notification!
+                String playerName = notificationMatcher.group("playerName");
+                String joinedLeft = notificationMatcher.group("joinedLeft");
 
-            Matcher privateMessageMatcher = PRIVATE_MESSAGE_RECEIVED_PATTERN.matcher(message);
-            Matcher chatMessageMatcher = CHAT_MESSAGE_RECEIVED_PATTERN.matcher(message);
-            Matcher partyOrGameInviteMatcher = PARTY_OR_GAME_INVITE_PATTERN.matcher(message);
-            Matcher dungeonPartyFinderJoinedMatcher = DUNGEON_FINDER_JOINED_PATTERN.matcher(message);
-            if (privateMessageMatcher.find()) {
-                messageSender = privateMessageMatcher.group(1);
-                if (!"stash".equals(messageSender)) {
-                    this.lastPMSender = messageSender;
-                }
-            } else if (chatMessageMatcher.find()) {
-                messageSender = chatMessageMatcher.group(1);
-            } else if (partyOrGameInviteMatcher.find()) {
-                messageSender = partyOrGameInviteMatcher.group(1);
-            } else if (dungeonPartyFinderJoinedMatcher.find()) {
-                messageSender = dungeonPartyFinderJoinedMatcher.group(1);
-                if (CredentialStorage.isMooValid) {
-                    boolean joinedYourself = messageSender.equals(Minecraft.getMinecraft().thePlayer.getName());
-                    if (!joinedYourself && MooConfig.getDungPartyFinderPlayerLookupDisplay() != MooConfig.Setting.DISABLED) {
-                        // another player joined via Dungeon Party Finder
-                        String dungeonClass = dungeonPartyFinderJoinedMatcher.group(2) + " Lvl " + dungeonPartyFinderJoinedMatcher.group(3);
-                        getNewDungeonPartyMemberDetails(messageSender, dungeonClass);
-                    } else if (joinedYourself && MooConfig.dungPartyFinderPartyLookup) {
-                        // successfully joined another party via Dungeon Party Finder
-                        main.getDungeonCache().lookupPartyMembers();
-                    }
+                if ("joined".equals(joinedLeft)) {
+                    main.getPlayerCache().addFriend(playerName);
+                } else { // left
+                    main.getPlayerCache().removeFriend(playerName);
                 }
-            } else if (CredentialStorage.isMooValid && MooConfig.dungPartyFullLookup && message.equals("Party Finder > Your dungeon group is full! Click here to warp to the dungeon!")
-                    && (Minecraft.getMinecraft().currentScreen == null || Minecraft.getMinecraft().currentScreen instanceof GuiChat)) {
-                ClientCommandHandler.instance.executeCommand(Minecraft.getMinecraft().thePlayer, "/moo dp");
+                return;
             }
+        }
 
-            if (messageSender != null) {
-                main.getPlayerCache().add(messageSender);
+        String messageSender = null;
+
+        Matcher privateMessageMatcher = PRIVATE_MESSAGE_RECEIVED_PATTERN.matcher(message);
+        Matcher chatMessageMatcher = CHAT_MESSAGE_RECEIVED_PATTERN.matcher(message);
+        Matcher partyOrGameInviteMatcher = PARTY_OR_GAME_INVITE_PATTERN.matcher(message);
+        Matcher dungeonPartyFinderJoinedMatcher = DUNGEON_FINDER_JOINED_PATTERN.matcher(message);
+        if (privateMessageMatcher.find()) {
+            messageSender = privateMessageMatcher.group(1);
+            if (!"stash".equals(messageSender)) {
+                this.lastPMSender = messageSender;
             }
+        } else if (chatMessageMatcher.find()) {
+            messageSender = chatMessageMatcher.group(1);
+        } else if (partyOrGameInviteMatcher.find()) {
+            messageSender = partyOrGameInviteMatcher.group(1);
+        } else if (dungeonPartyFinderJoinedMatcher.find()) {
+            messageSender = dungeonPartyFinderJoinedMatcher.group(1);
+            if (CredentialStorage.isMooValid) {
+                boolean joinedYourself = messageSender.equals(Minecraft.getMinecraft().thePlayer.getName());
+                if (!joinedYourself && MooConfig.getDungPartyFinderPlayerLookupDisplay() != MooConfig.Setting.DISABLED) {
+                    // another player joined via Dungeon Party Finder
+                    String dungeonClass = dungeonPartyFinderJoinedMatcher.group(2) + " Lvl " + dungeonPartyFinderJoinedMatcher.group(3);
+                    getNewDungeonPartyMemberDetails(messageSender, dungeonClass);
+                } else if (joinedYourself && MooConfig.dungPartyFinderPartyLookup) {
+                    // successfully joined another party via Dungeon Party Finder
+                    main.getDungeonCache().lookupPartyMembers();
+                }
+            }
+        } else if (CredentialStorage.isMooValid && MooConfig.dungPartyFullLookup && message.equals("Party Finder > Your dungeon group is full! Click here to warp to the dungeon!")
+                && (Minecraft.getMinecraft().currentScreen == null || Minecraft.getMinecraft().currentScreen instanceof GuiChat)) {
+            ClientCommandHandler.instance.executeCommand(Minecraft.getMinecraft().thePlayer, "/moo dp");
+        }
+
+        if (messageSender != null) {
+            main.getPlayerCache().add(messageSender);
         }
     }
 
diff --git a/src/main/java/de/cowtipper/cowlection/listener/PlayerListener.java b/src/main/java/de/cowtipper/cowlection/listener/PlayerListener.java
index ff29669..ad47288 100644
--- a/src/main/java/de/cowtipper/cowlection/listener/PlayerListener.java
+++ b/src/main/java/de/cowtipper/cowlection/listener/PlayerListener.java
@@ -1,9 +1,7 @@
 package de.cowtipper.cowlection.listener;
 
 import de.cowtipper.cowlection.Cowlection;
-import de.cowtipper.cowlection.config.CredentialStorage;
 import de.cowtipper.cowlection.config.MooConfig;
-import de.cowtipper.cowlection.error.ApiAskPolitelyErrorEvent;
 import de.cowtipper.cowlection.error.ApiHttpErrorEvent;
 import de.cowtipper.cowlection.listener.skyblock.DungeonsListener;
 import de.cowtipper.cowlection.listener.skyblock.SkyBlockListener;
@@ -43,6 +41,7 @@ public class PlayerListener {
     private boolean isOnSkyBlock;
     private AbortableRunnable checkScoreboard;
     private long nextApiErrorMessage;
+    private long nextMigrationNotification = 0;
 
     public PlayerListener(Cowlection main) {
         this.main = main;
@@ -118,18 +117,10 @@ public class PlayerListener {
             isOnSkyBlock = false;
             isPlayerJoiningServer = true;
             main.getVersionChecker().runUpdateCheck(false);
-            if (MooConfig.doBestFriendsOnlineCheck && CredentialStorage.isMooValid && main.getFriendsHandler().getBestFriends().size() > 0) {
-                main.getFriendsHandler().runBestFriendsOnlineCheck(false);
-            }
         }
     }
 
     @SubscribeEvent
-    public void onApiAskPolitelyError(ApiAskPolitelyErrorEvent e) {
-        main.getFriendsHandler().addErroredApiRequest(e.getPlayerName());
-    }
-
-    @SubscribeEvent
     public void onApiHttpError(ApiHttpErrorEvent e) {
         if (nextApiErrorMessage < System.currentTimeMillis() && Minecraft.getMinecraft().thePlayer != null) {
             this.nextApiErrorMessage = System.currentTimeMillis() + 3000;
@@ -148,6 +139,26 @@ public class PlayerListener {
     public void onWorldEnter(PlayerSetSpawnEvent e) {
         isPlayerJoiningServer = false;
 
+        if (this.nextMigrationNotification < System.currentTimeMillis()) {
+            this.nextMigrationNotification = System.currentTimeMillis() + 10000;
+            new TickDelay(() -> {
+                if (MooConfig.doBestFriendsOnlineCheck || main.getFriendsHandler().getBestFriendsListSize() > 0) {
+                    main.getChatHelper().sendMessage(new MooChatComponent("[" + EnumChatFormatting.DARK_RED + Cowlection.MODNAME + EnumChatFormatting.RED + "] The 'best friends list' feature has been removed from this mod.").red()
+                            .appendSibling(new MooChatComponent(" Run " + EnumChatFormatting.GOLD + "/moo bestfriends " + EnumChatFormatting.YELLOW + "to migrate your best friends list").yellow())
+                            .setSuggestCommand("/moo bestfriends", false)
+                            .setHover(new MooChatComponent.KeyValueChatComponent("Run", "/moo bestfriends", " ")
+                                    .appendFreshSibling(new MooChatComponent("(This message will re-appear as long as there are still names on your Cowlection best friends list)").red())));
+                }
+                if (MooConfig.doMonitorNotifications()) {
+                    main.getChatHelper().sendMessage(new MooChatComponent("[" + EnumChatFormatting.DARK_RED + Cowlection.MODNAME + EnumChatFormatting.RED + "] The 'login & logout notifications filter' feature has been removed from this mod.").red()
+                            .appendFreshSibling(new MooChatComponent("Use Hypixel's commands instead:").gold()
+                                    .appendFreshSibling(new MooChatComponent(" §6➊ §eCycle through (best) friends notifications: §6/friend notifications §7(you may need to repeat this command to get the desired setting)").yellow().setSuggestCommand("/friend notifications"))
+                                    .appendFreshSibling(new MooChatComponent(" §6➋ §eToggle Guild notifications: §6/guild notifications").yellow().setSuggestCommand("/guild notifications")))
+                            .appendFreshSibling(new MooChatComponent("[Do not show this message again! I updated my settings accordingly]").darkAqua().underline().setSuggestCommand("/moo I-read-the-login-logout-notification-changes")));
+                }
+            }, 3000);
+        }
+
         if (MooConfig.getEnableSkyBlockOnlyFeatures() == MooConfig.Setting.ALWAYS) {
             main.getLogger().info("Registering SkyBlock listeners");
             isOnSkyBlock = true;
diff --git a/src/main/java/de/cowtipper/cowlection/partyfinder/RuleEditorGui.java b/src/main/java/de/cowtipper/cowlection/partyfinder/RuleEditorGui.java
index 60f6b81..b1b1160 100644
--- a/src/main/java/de/cowtipper/cowlection/partyfinder/RuleEditorGui.java
+++ b/src/main/java/de/cowtipper/cowlection/partyfinder/RuleEditorGui.java
@@ -80,7 +80,7 @@ public class RuleEditorGui extends GuiScreen {
         this.buttonList.add(this.btnClose = new GuiButtonExt(2, this.width - 25, 4, 20, 20, EnumChatFormatting.RED + "X"));
 
         updateLastScrollDistance();
-        // scrollable commands list
+        // scrollable gui
         rulesList = new RulesListGui(this.width - 30, this.rules.getRules(), lastScrollDistance);
     }
 
diff --git a/src/main/java/de/cowtipper/cowlection/util/ApiUtils.java b/src/main/java/de/cowtipper/cowlection/util/ApiUtils.java
index 1397a36..d820c83 100644
--- a/src/main/java/de/cowtipper/cowlection/util/ApiUtils.java
+++ b/src/main/java/de/cowtipper/cowlection/util/ApiUtils.java
@@ -1,7 +1,5 @@
 package de.cowtipper.cowlection.util;
 
-import com.google.gson.JsonObject;
-import com.google.gson.JsonParser;
 import com.google.gson.JsonSyntaxException;
 import com.mojang.util.UUIDTypeAdapter;
 import de.cowtipper.cowlection.Cowlection;
@@ -11,7 +9,6 @@ import de.cowtipper.cowlection.chesttracker.data.LowestBinsCache;
 import de.cowtipper.cowlection.command.exception.ThrowingConsumer;
 import de.cowtipper.cowlection.config.CredentialStorage;
 import de.cowtipper.cowlection.data.*;
-import de.cowtipper.cowlection.error.ApiAskPolitelyErrorEvent;
 import de.cowtipper.cowlection.error.ApiHttpErrorEvent;
 import de.cowtipper.cowlection.error.ApiHttpErrorException;
 import net.minecraft.util.EnumChatFormatting;
@@ -32,9 +29,7 @@ import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
 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://sessionserver.mojang.com/session/minecraft/profile/%s";
     private static final String ONLINE_STATUS_URL = "https://api.hypixel.net/status?key=%s&uuid=%s";
     private static final String SKYBLOCK_STATS_URL = "https://api.hypixel.net/skyblock/profiles?key=%s&uuid=%s";
     private static final String BAZAAR_URL = "https://api.hypixel.net/skyblock/bazaar";
@@ -64,26 +59,6 @@ public class ApiUtils {
         return null;
     }
 
-    public static void fetchCurrentName(Friend friend, ThrowingConsumer<String> action) {
-        pool.execute(() -> action.accept(getCurrentName(friend)));
-    }
-
-    private static String getCurrentName(Friend friend) {
-        try (BufferedReader reader = makeApiCall(String.format(UUID_TO_NAME_URL, UUIDTypeAdapter.fromUUID(friend.getUuid())))) {
-            if (reader == null) {
-                return UUID_NOT_FOUND;
-            } else {
-                JsonObject profile = new JsonParser().parse(reader).getAsJsonObject();
-                if (profile.has("name")) {
-                    return profile.get("name").getAsString();
-                }
-            }
-        } catch (IOException | JsonSyntaxException e) {
-            handleApiException(e);
-        }
-        return null;
-    }
-
     public static void fetchPlayerStatus(Friend friend, ThrowingConsumer<HyStalkingData> action) {
         pool.execute(() -> action.accept(stalkPlayer(friend)));
     }
@@ -169,8 +144,6 @@ public class ApiUtils {
                 return GsonUtils.fromJson(reader, HyPlayerData.class);
             }
         } catch (IOException | JsonSyntaxException e) {
-            ApiAskPolitelyErrorEvent event = new ApiAskPolitelyErrorEvent(stalkedPlayer.getName());
-            MinecraftForge.EVENT_BUS.post(event);
             handleApiException(e);
         }
         return null;
diff --git a/src/main/java/de/cowtipper/cowlection/util/VersionChecker.java b/src/main/java/de/cowtipper/cowlection/util/VersionChecker.java
index ea313c0..4ccb0fd 100644
--- a/src/main/java/de/cowtipper/cowlection/util/VersionChecker.java
+++ b/src/main/java/de/cowtipper/cowlection/util/VersionChecker.java
@@ -72,7 +72,7 @@ public class VersionChecker {
                 statusMsg = new ChatComponentText("✔ You're running the latest version (" + Cowlection.VERSION + ").").setChatStyle(new ChatStyle().setColor(EnumChatFormatting.GREEN));
             } else if (versionResult.status == ForgeVersion.Status.PENDING) {
                 // pending
-                statusMsg = new ChatComponentText("➜ " + "Version check either failed or is still running.").setChatStyle(new ChatStyle().setColor(EnumChatFormatting.YELLOW))
+                statusMsg = new ChatComponentText("➜ Version check either failed or is still running.").setChatStyle(new ChatStyle().setColor(EnumChatFormatting.YELLOW))
                         .appendSibling(new ChatComponentText("\n ➊ Check for results again in a few seconds with " + EnumChatFormatting.GOLD + "/moo version").setChatStyle(new ChatStyle()
                                 .setColor(EnumChatFormatting.YELLOW)
                                 .setChatClickEvent(new ClickEvent(ClickEvent.Action.RUN_COMMAND, "/moo version"))
diff --git a/src/main/resources/assets/cowlection/lang/en_US.lang b/src/main/resources/assets/cowlection/lang/en_US.lang
index 5634376..aa95c48 100644
--- a/src/main/resources/assets/cowlection/lang/en_US.lang
+++ b/src/main/resources/assets/cowlection/lang/en_US.lang
@@ -1,5 +1,5 @@
 cowlection.config.isMooValid=API key valid? §d§l⚷
-cowlection.config.isMooValid.tooltip=You can use /moo apikey to see how to request a new API key from Hypixel\n§eConfig entries marked with §d§l⚷ §erequire a valid API key.
+cowlection.config.isMooValid.tooltip=You can use §e/moo apikey <new key> §rto set a new API key\n§eConfig entries marked with §d§l⚷ §erequire a valid API key.
 cowlection.config.configGuiExplanations=Show config categories explanations...
 cowlection.config.configGuiExplanations.tooltip=How should the explanations (introductory words, hints, and tips) of the individual configuration categories be displayed?
 cowlection.config.mooCmdAlias=Alias for /moo command
@@ -28,16 +28,6 @@ cowlection.config.gotoKeyBindings=Change key bindings
 cowlection.config.gotoKeyBindings.tooltip=Some key bindings can be found in the 'Cowlection' sub-category
 cowlection.config.doUpdateCheck=Check for updates
 cowlection.config.doUpdateCheck.tooltip=Check for mod updates when launching the game?
-cowlection.config.showBestFriendNotifications=Show best friend notifications
-cowlection.config.showBestFriendNotifications.tooltip=Set to true to receive best friends' login/logout messages, set to false hide them.\n§7Best friends list commands:\n  ‣ §e/moo add\n  ‣ §e/moo remove\n  ‣ §e/moo list
-cowlection.config.enableBestFriendNotificationSound=Play sound when best friend joins
-cowlection.config.enableBestFriendNotificationSound.tooltip=If enabled: plays a notification sound when a best friend comes online.
-cowlection.config.showFriendNotifications=Show friend notifications
-cowlection.config.showFriendNotifications.tooltip=Set to true to receive friends' login/logout messages, set to false hide them.
-cowlection.config.showGuildNotifications=Show guild notifications
-cowlection.config.showGuildNotifications.tooltip=Set to true to receive guild members' login/logout messages, set to false hide them.
-cowlection.config.doBestFriendsOnlineCheck=Do best friends online check §d§l⚷
-cowlection.config.doBestFriendsOnlineCheck.tooltip=Set to true to check best friends' online status when joining a server, set to false to disable.\n§fDoes §dnot §fwork for staff members and players hiding their online status.\n§aHover over a player name to see their current gamemode.\n§d§l⚷ §eRequires a valid API key!
 cowlection.config.enableSkyBlockOnlyFeatures=Enable SkyBlock-only features
 cowlection.config.enableSkyBlockOnlyFeatures.tooltip=§6When should SkyBlock-only features be active?\n§7§o(relog or change worlds after changing this option)\n §d➊ §fonly while being on SkyBlock §e(= disabled on other servers and in other gamemodes\n §d➋ §falways §e(= including other servers and gamemodes)\n §d➌ §fnever §e(§cNone §eof the SkyBlock-only features will work!)
 cowlection.config.notifyFreshServer=Notify when world is loaded <X days