fCraft.WorldCommands.WorldsHandler C# (CSharp) Method

        static void WorldsHandler( Player player, Command cmd ) {
            string param = cmd.Next();
            World[] worlds;

            string listName;
            string extraParam;
            int offset = 0;

            if( param == null || Int32.TryParse( param, out offset ) ) {
                listName = "available worlds";
                extraParam = "";
                worlds = WorldManager.Worlds.Where( player.CanSee ).ToArray();

            } else {
                switch( Char.ToLower( param[0] ) ) {
                    case 'a':
                        listName = "worlds";
                        extraParam = "all ";
                        worlds = WorldManager.Worlds;
                        break;
                    case 'h':
                        listName = "hidden worlds";
                        extraParam = "hidden ";
                        worlds = WorldManager.Worlds.Where( w => !player.CanSee( w ) ).ToArray();
                        break;
                    case 'p':
                        listName = "populated worlds";
                        extraParam = "populated ";
                        worlds = WorldManager.Worlds.Where( w => w.Players.Any( player.CanSee ) ).ToArray();
                        break;
                    case '@':
                        if( param.Length == 1 ) {
                            CdWorlds.PrintUsage( player );
                            return;
                        }
                        string rankName = param.Substring( 1 );
                        Rank rank = RankManager.FindRank( rankName );
                        if( rank == null ) {
                            player.MessageNoRank( rankName );
                            return;
                        }
                        listName = String.Format( "worlds where {0}&S+ can build", rank.ClassyName );
                        extraParam = "@" + rank.Name + " ";
                        worlds = WorldManager.Worlds.Where( w => (w.BuildSecurity.MinRank <= rank) && player.CanSee( w ) )
                                                    .ToArray();
                        break;
                    default:
                        CdWorlds.PrintUsage( player );
                        return;
                }
                if( cmd.HasNext && !cmd.NextInt( out offset ) ) {
                    CdWorlds.PrintUsage( player );
                    return;
                }
            }

            if( worlds.Length == 0 ) {
                player.Message( "There are no {0}.", listName );

            } else if( worlds.Length <= WorldNamesPerPage || player.IsSuper ) {
                player.MessagePrefixed( "&S  ", "&SThere are {0} {1}: {2}",
                                        worlds.Length, listName, worlds.JoinToClassyString() );

            } else {
                if( offset >= worlds.Length ) {
                    offset = Math.Max( 0, worlds.Length - WorldNamesPerPage );
                }
                World[] worldsPart = worlds.Skip( offset ).Take( WorldNamesPerPage ).ToArray();
                player.MessagePrefixed( "&S   ", "&S{0}: {1}",
                                        listName.UppercaseFirst(), worldsPart.JoinToClassyString() );

                if( offset + worldsPart.Length < worlds.Length ) {
                    player.Message( "Showing {0}-{1} (out of {2}). Next: &H/Worlds {3}{1}",
                                    offset + 1, offset + worldsPart.Length, worlds.Length, extraParam );
                } else {
                    player.Message( "Showing worlds {0}-{1} (out of {2}).",
                                    offset + 1, offset + worldsPart.Length, worlds.Length );
                }
            }
        }