Add cracked whitelist (Fixes #42)

(switch-mode -> switching to online-mode from offlinemode)

bungee/src/main/java/com/github/games647/fastlogin/bungee/ImportCommand.java

@@ -1,5 +1,6 @@
 package com.github.games647.fastlogin.bungee;
 
+import com.github.games647.fastlogin.bungee.FastLoginBungee;
 import com.github.games647.fastlogin.core.AuthStorage;
 import com.github.games647.fastlogin.core.FastLoginCore;
 import com.github.games647.fastlogin.core.importer.ImportPlugin;
@@ -13,7 +14,7 @@ public class ImportCommand extends Command {
     private final FastLoginBungee plugin;
 
     public ImportCommand(FastLoginBungee plugin) {
-        super("import-db");
+        super("import-db", plugin.getDescription().getName().toLowerCase() + ".import");
 
         this.plugin = plugin;
     }
@@ -79,7 +80,5 @@ public class ImportCommand extends Command {
         } else {
             sender.sendMessage(ChatColor.DARK_RED + "Failed to import the data. Check out the logs");
         }
-
-        return;
     }
 }

bungee/src/main/java/com/github/games647/fastlogin/bungee/tasks/AsyncPremiumCheck.java

@@ -58,6 +58,11 @@ public class AsyncPremiumCheck implements Runnable {
             } else if (profile.isPremium()) {
                 requestPremiumLogin(connection, profile, username, true);
             } else {
+                if (plugin.getConfig().getBoolean("switchMode")) {
+                    connection.disconnect(plugin.getCore().getMessage("switch-kick-message"));
+                    return;
+                }
+
                 //Cracked session
                 plugin.getSession().put(connection, new BungeeLoginSession(username, false, profile));
             }

bungee/src/main/java/com/github/games647/fastlogin/bungee/tasks/AsyncToggleMessage.java

@@ -32,7 +32,8 @@ public class AsyncToggleMessage implements Runnable {
 
     private void turnOffPremium() {
         PlayerProfile playerProfile = plugin.getCore().getStorage().loadProfile(targetPlayer);
-        if (!playerProfile.isPremium()) {
+        //existing player is already cracked
+        if (playerProfile.getUserId() != -1 && !playerProfile.isPremium()) {
             fromPlayer.sendMessage(TextComponent.fromLegacyText(plugin.getCore().getMessage("not-premium")));
             return;
         }