Implemented accounts command

src/main/java/fr/xephi/authme/command/CommandManager.java

@@ -136,6 +136,19 @@ public class CommandManager {
         lastLoginCommand.setCommandPermissions("authme.admin.lastlogin", CommandPermissions.DefaultPermission.OP_ONLY);
         lastLoginCommand.addArgument(new CommandArgumentDescription("player", "Player name", true));
 
+        // Register the accounts command
+        CommandDescription accountsCommand = new CommandDescription(
+                new AccountsCommand(),
+                new ArrayList<String>() {{
+                    add("accounts");
+                    add("account");
+                }},
+                "Display player accounts",
+                "Display all accounts of a player by it's player name or IP.",
+                authMeCommand);
+        accountsCommand.setCommandPermissions("authme.admin.accounts", CommandPermissions.DefaultPermission.OP_ONLY);
+        accountsCommand.addArgument(new CommandArgumentDescription("player", "Player name or IP", true));
+
         // Register the purge command
         CommandDescription purgeCommand = new CommandDescription(
                 new PurgeCommand(),

src/main/java/fr/xephi/authme/command/executable/AccountsCommand.java

@@ -0,0 +1,110 @@
+package fr.xephi.authme.command.executable;
+
+import fr.xephi.authme.AuthMe;
+import fr.xephi.authme.cache.auth.PlayerAuth;
+import fr.xephi.authme.command.CommandParts;
+import fr.xephi.authme.command.ExecutableCommand;
+import fr.xephi.authme.settings.Messages;
+import org.bukkit.Bukkit;
+import org.bukkit.command.CommandSender;
+
+import java.util.List;
+
+public class AccountsCommand extends ExecutableCommand {
+
+    /**
+     * Execute the command.
+     *
+     * @param sender           The command sender.
+     * @param commandReference The command reference.
+     * @param commandArguments The command arguments.
+     *
+     * @return True if the command was executed successfully, false otherwise.
+     */
+    @Override
+    public boolean executeCommand(final CommandSender sender, CommandParts commandReference, CommandParts commandArguments) {
+        // AuthMe plugin instance
+        final AuthMe plugin = AuthMe.getInstance();
+        // Messages instance
+        final Messages m = Messages.getInstance();
+
+        // Get the player query
+        String playerQuery = sender.getName();
+        if(commandArguments.getCount() >= 1)
+            playerQuery = commandArguments.get(0);
+        final String playerQueryFinal = playerQuery;
+
+        // Command logic
+        if (!playerQuery.contains(".")) {
+            Bukkit.getScheduler().scheduleSyncDelayedTask(plugin, new Runnable() {
+
+                @Override
+                public void run() {
+                    PlayerAuth auth;
+                    StringBuilder message = new StringBuilder("[AuthMe] ");
+                    try {
+                        auth = plugin.database.getAuth(playerQueryFinal.toLowerCase());
+                    } catch (NullPointerException npe) {
+                        m.send(sender, "unknown_user");
+                        return;
+                    }
+                    if (auth == null) {
+                        m.send(sender, "unknown_user");
+                        return;
+                    }
+                    List<String> accountList = plugin.database.getAllAuthsByName(auth);
+                    if (accountList == null || accountList.isEmpty()) {
+                        m.send(sender, "user_unknown");
+                        return;
+                    }
+                    if (accountList.size() == 1) {
+                        sender.sendMessage("[AuthMe] " + playerQueryFinal + " is a single account player");
+                        return;
+                    }
+                    int i = 0;
+                    for (String account : accountList) {
+                        i++;
+                        message.append(account);
+                        if (i != accountList.size()) {
+                            message.append(", ");
+                        } else {
+                            message.append(".");
+                        }
+                    }
+                    sender.sendMessage("[AuthMe] " + playerQueryFinal + " has " + String.valueOf(accountList.size()) + " accounts");
+                    sender.sendMessage(message.toString());
+                }
+            });
+            return true;
+        } else {
+            Bukkit.getScheduler().scheduleSyncDelayedTask(plugin, new Runnable() {
+                @Override
+                public void run() {
+                    StringBuilder message = new StringBuilder("[AuthMe] ");
+                    List<String> accountList = plugin.database.getAllAuthsByIp(playerQueryFinal);
+                    if (accountList == null || accountList.isEmpty()) {
+                        sender.sendMessage("[AuthMe] This IP does not exist in the database");
+                        return;
+                    }
+                    if (accountList.size() == 1) {
+                        sender.sendMessage("[AuthMe] " + playerQueryFinal + " is a single account player");
+                        return;
+                    }
+                    int i = 0;
+                    for (String account : accountList) {
+                        i++;
+                        message.append(account);
+                        if (i != accountList.size()) {
+                            message.append(", ");
+                        } else {
+                            message.append(".");
+                        }
+                    }
+                    sender.sendMessage("[AuthMe] " + playerQueryFinal + " has " + String.valueOf(accountList.size()) + " accounts");
+                    sender.sendMessage(message.toString());
+                }
+            });
+            return true;
+        }
+    }
+}