fCraft.WorldCommands.JoinHandler C# (CSharp) Method

        static void JoinHandler( Player player, Command cmd ) {
            string worldName = cmd.Next();
            if( worldName == null ) {
                CdJoin.PrintUsage( player );
                return;
            }

            World[] worlds = WorldManager.FindWorlds( player, worldName );

            if( worlds.Length > 1 ) {
                player.MessageManyMatches( "world", worlds );

            } else if( worlds.Length == 1 ) {
                World world = worlds[0];
                player.LastUsedWorldName = world.Name;
                switch( world.AccessSecurity.CheckDetailed( player.Info ) ) {
                    case SecurityCheckResult.Allowed:
                    case SecurityCheckResult.WhiteListed:
                        if( world.IsFull ) {
                            player.Message( "Cannot join {0}&S: world is full.", world.ClassyName );
                            return;
                        }
                        player.StopSpectating();
                        if( !player.JoinWorldNow( world, true, WorldChangeReason.ManualJoin ) ) {
                            player.Message( "ERROR: Failed to join world. See log for details." );
                        }
                        break;
                    case SecurityCheckResult.BlackListed:
                        player.Message( "Cannot join world {0}&S: you are blacklisted.",
                                        world.ClassyName );
                        break;
                    case SecurityCheckResult.RankTooLow:
                        player.Message( "Cannot join world {0}&S: must be {1}+",
                                        world.ClassyName, world.AccessSecurity.MinRank.ClassyName );
                        break;
                }

            } else {
                // no worlds found - see if player meant to type in "/Join" and not "/TP"
                Player[] players = Server.FindPlayers( player, worldName, true );
                if( players.Length == 1 ) {
                    player.LastUsedPlayerName = players[0].Name;
                    player.StopSpectating();
                    player.ParseMessage( "/TP " + players[0].Name, false );
                } else {
                    player.MessageNoWorld( worldName );
                }
            }
        }