public static void createBackups(String file) {
    final String save = file.split("\\.")[0];
    final TFM_Config config = new TFM_Config(TotalFreedomMod.plugin, "backup.yml", false);
    config.load();

    // Daily
    if (!config.isInt(save + ".daily")) {
      performBackup(file, "daily");
      config.set(save + ".daily", TFM_Util.getUnixTime());
    } else {
      int lastBackupDaily = config.getInt(save + ".daily");

      if (lastBackupDaily + 3600 * 24 < TFM_Util.getUnixTime()) {
        performBackup(file, "daily");
        config.set(save + ".daily", TFM_Util.getUnixTime());
      }
    }

    // Weekly
    if (!config.isInt(save + ".weekly")) {
      performBackup(file, "weekly");
      config.set(save + ".weekly", TFM_Util.getUnixTime());
    } else {
      int lastBackupWeekly = config.getInt(save + ".weekly");

      if (lastBackupWeekly + 3600 * 24 * 7 < TFM_Util.getUnixTime()) {
        performBackup(file, "weekly");
        config.set(save + ".weekly", TFM_Util.getUnixTime());
      }
    }

    config.save();
  }
  @EventHandler(priority = EventPriority.MONITOR)
  public void onPlayerJoin(PlayerJoinEvent event) {
    final Player player = event.getPlayer();
    final String ip = TFM_Util.getIp(player);
    TFM_Log.info(
        "[JOIN] " + TFM_Util.formatPlayer(player) + " joined the game with IP address: " + ip,
        true);

    if (TFM_PlayerList.getInstance().existsEntry(player)) {
      final TFM_PlayerEntry entry = TFM_PlayerList.getInstance().getEntry(player);
      entry.setLastJoinUnix(TFM_Util.getUnixTime());
      entry.setLastJoinName(player.getName());
      entry.save();
    } else {
      TFM_PlayerList.getInstance().getEntry(player);
      TFM_Log.info("Added new player: " + TFM_Util.formatPlayer(player));
    }

    final TFM_PlayerData playerdata = TFM_PlayerData.getPlayerData(player);
    playerdata.setSuperadminIdVerified(false);

    // Verify strict IP match
    if (TFM_AdminList.isSuperAdmin(player)) {
      TFM_BanManager.getInstance().unbanIp(ip);
      TFM_BanManager.getInstance().unbanIp(TFM_Util.getFuzzyIp(ip));
      TFM_BanManager.getInstance().unbanUuid(player.getUniqueId());

      player.setOp(true);

      if (!TFM_AdminList.isIdentityMatched(player)) {
        playerdata.setSuperadminIdVerified(false);

        TFM_Util.bcastMsg(
            "Warning: "
                + player.getName()
                + " is an admin, but is using an account not registered to one of their ip-list.",
            ChatColor.RED);
      } else {
        playerdata.setSuperadminIdVerified(true);
        TFM_AdminList.updateLastLogin(player);
      }
    }

    // Handle admin impostors
    if (TFM_AdminList.isAdminImpostor(player)) {
      TFM_Util.bcastMsg(
          "Warning: " + player.getName() + " has been flagged as an impostor!", ChatColor.RED);
      TFM_Util.bcastMsg(
          ChatColor.AQUA + player.getName() + " is " + TFM_PlayerRank.getLoginMessage(player));
      player.getInventory().clear();
      player.setOp(false);
      player.setGameMode(GameMode.SURVIVAL);
    } else if (TFM_AdminList.isSuperAdmin(player)
        || TFM_Util.DEVELOPERS.contains(player.getName())) {
      TFM_Util.bcastMsg(
          ChatColor.AQUA + player.getName() + " is " + TFM_PlayerRank.getLoginMessage(player));
    }

    new BukkitRunnable() {
      @Override
      public void run() {
        if (TFM_ConfigEntry.ADMIN_ONLY_MODE.getBoolean()) {
          player.sendMessage(ChatColor.RED + "Server is currently closed to non-superadmins.");
        }

        if (TotalFreedomMod.lockdownEnabled) {
          TFM_Util.playerMsg(
              player,
              "Warning: Server is currenty in lockdown-mode, new players will not be able to join!",
              ChatColor.RED);
        }
      }
    }.runTaskLater(TotalFreedomMod.plugin, 20L * 3L);
  }