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• (削除) The code is very unoptimised; rampant if-nesting, tons of methods, etc. Not very efficient or aesthetically pleasing. (削除ここまで) Solved this for a while!
• The method of storing user objects is slow. Having to write the whole file over again with each change seems very inefficient, but I'm unsure of a superior method (This is a bit better since it now only commits one write operation per message).
• The code is unmodular; making a change often requires a stop of the debugging process.

I'm certainly a fan of receiving direct feedback, but if you can also provide a resource where someone has created a very efficient/complex/powerful IRC bot I'd very much enjoy taking a look at the code.

• (削除) The code is very unoptimised; rampant if-nesting, tons of methods, etc. Not very efficient or aesthetically pleasing. (削除ここまで) Solved this for a while!
• The method of storing user objects is slow. Having to write the whole file over again with each change seems very inefficient, but I'm unsure of a superior method (This is a bit better since it now only commits one write operation per message).
• The code is unmodular; making a change often requires a stop of the debugging process.
• There is very little utility to the bot. Small list of commands, seems somewhat dry/worthless.

I'm certainly a fan of receiving direct feedback, but if you can also provide a resource where someone has created a very efficient/complex/powerful IRC bot I'd very much enjoy taking a look at the code. Also, suggestion of features would help quite a bit, as I'm very unimaginative myself.

• The code is very unoptimised; rampant if-nesting, tons of methods, etc. Not very efficient or aesthetically pleasing.
• The method of storing user objects is slow. Having to write the whole file over again with each change seems very inefficient, but I'm unsure of a superior method
• The code is unmodular; making a change often requires a stop of the debugging process

Interface IRCBot inherits from

using System;
namespace IRCBot {
 internal interface IModule
 {
 void OnChannelMessage(ChannelMessage e);
 }
 internal class ChannelMessage
 {
 public DateTime Time;
 public string
 Nickname,
 Realname,
 Hostname,
 Type,
 Recipient,
 Args;
 }
 internal class ChannelEvent
 {
 public string
 Event,
 Channel;
 public ChannelEvent()
 {
 
 }
 }
}

• (削除) The code is very unoptimised; rampant if-nesting, tons of methods, etc. Not very efficient or aesthetically pleasing. (削除ここまで) Solved this for a while!
• The method of storing user objects is slow. Having to write the whole file over again with each change seems very inefficient, but I'm unsure of a superior method (This is a bit better since it now only commits one write operation per message).
• The code is unmodular; making a change often requires a stop of the debugging process.

internal class IRCBot : IDisposable
 {
 
 private readonly Dictionary<string, string> commands = new Dictionary<string, string>
 {
 {"join", "(join <channel>) - joins specified channel."},
 {"part", "(part <channel> <message*>) - parts specified channel."},
 {"say", "(say <channel*> <message>) - sends privmsg to target channel."},
 {"chanlist/channels", "Provides a list of channels joined."},
 {"channels", "Provides a list of channels joined."},
 {"userlist", "List all users currently in database and their access number."},
 {"define", "(define <word> <part of speech*>) - outputs a dictionary definition for the specified word."},
 {"lookup", "(lookup <target article>) - outputs the contents of a specified wikipedia article."},
 {"message", "(message <recipient> <mesaage>) - sends a message to specified user, to be sent when they login again."},
 {"seen", "(seen <target>) - Outputs the last DateTime of the target user being active."},
 {"about", "Print out the version and creator information of the bot."},
 {"shutdown", "Closes program."}
 };
 private Config _config;
 private TcpClient _connection;
 private StreamWriter _log;
 private NetworkStream _ns;
 private StreamReader _sr;
 private StreamWriter _sw;

 private readonly Dictionary<string, List<string>> users = new Dictionary<string, List<string>>();
 private readonly Dictionary<string, int> userAttempts = new Dictionary<string, int>(); 

 private readonly List<string> channels = new List<string>();
 private List<User> userList;

 private string[] ex;
 private string user = string.Empty;
 private string realn = string.Empty;
 private readonly char[] sep = { ' ' };

 // set config 
 public IRCBot(Config config) {
 _config = config;
 }
 public void Dispose() {
 _sr?.Close();
 _sw?.Close();
 _ns?.Close();
 _log?.Close();
 _connection?.Close();
 }

 // command operations for main _switch()
 private void Join()
 {
 if (ex.Length >= 6)
  if (channels.Contains(ex[5]))
 SendMessage("I'm already in that channel.");
  else
 {
 SendMessage("Joining " + ex[5] + ".");
 SendData("JOIN", ex[5]);
 channels.Add(ex[5]);
 }
  else SendMessage("Too few parameters.");
 }
  private void Part()
 {
 if (ex.Length >= 6)
 if (ex[5].StartsWith("#"))
 if (channels.Contains(ex[5]))
 {
 if (ex.Length >= 7)
 {
 SendMessage("Leaving channel " + ex[5] + " for reason: " + ex[6]);
 SendData("PART", ex[5] + " " + ex[6]);
 }
 else
 {
 SendMessage("Leaving channel " + ex[5] + ".");
 SendData("PART", ex[5]);
 }

 channels.Remove(ex[5]);
 }
 else SendMessage("I'm not in that channel.");
 else
 {
 SendMessage("Leaving channel " + ex[2] + ".");
 SendData("PART", ex[2]);
 }
 else SendMessage("Too few parameters.");
 }
 private void Say()
 {
 if (ex.Length >= 6)
 if (ex[5].StartsWith("#"))
  SendData("PRIVMSG", ex[5] + "" + ex[6]);
 else
  SendMessage(ex[5]);
 else SendMessage("Please provide a message to send.");
 }
 private void Define()
  {
 if (ex.Length > 5)
 {
 var url = ex.Length > 6
 ? "https://api.pearson.com:443/v2/dictionaries/lasde/entries?headword=" + ex[5] + "&part_of_speech=" + ex[6] +
 "&limit=1"
 : "https://api.pearson.com:443/v2/dictionaries/lasde/entries?headword=" + ex[5] + "&limit=1";
 var entry = JObject.Parse(HttpGET(url));
 var _out = new Dictionary<string, string>();
 if ((int) entry.SelectToken("count") > 0) {
 _out.Add("word", (string) entry.SelectToken("results[0].headword"));
 _out.Add("pos", (string) entry.SelectToken("results[0].part_of_speech"));
 _out.Add("def", (string) entry.SelectToken("results[0].senses[0].definition[0]"));
 _out.Add("ex", (string) entry.SelectToken("results[0].senses[0].examples[0].text"));
 var sOut = string.IsNullOrEmpty(_out["ex"])
 ? _out["word"] + " [" + _out["pos"] + "] — " + _out["def"]
 : _out["word"] + " [" + _out["pos"] + "] — " + _out["def"] + " (ex. " + _out["ex"] + ")";
 SendMessage(sOut);
 }
 else SendMessage("No results found.");
 }
 else SendMessage("Too few parameters.");
 }

 private void Lookup()
  {
 if (ex.Length >= 6)
 {
 ex[5] = ex.Length >= 7 ? ex[5] + " " + ex[6] : ex[5];
 ex[5] = ex[5].Replace(" ", "%20");
 var response = HttpGET("https://en.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&exintro=&explaintext=&titles=" +
 ex[5]);
 var pages = JObject.Parse(response)["query"]["pages"].Values().First();
 var title = (string) pages["title"];
 var content = Regex.Replace((string) pages["extract"], @"\r\n?|\n", "");
 var _out = StrSplit(content, 510);
 Console.WriteLine(_out);
 var _int = 0;
 foreach (var s in _out)
 {
 if (_int == 0)
 {
 SendData("PRIVMSG", user + " " + title + " — " + s);
  _int++;
 }
 else
 SendData("PRIVMSG", user + " " + s);
 }
 }
 else
 {
 SendMessage("Too few parameters.");
 }
 }
 private void Help()
 {
 SendData("PRIVMSG", user + " Each command must be proceeded with \"eve\" or \"eve,\" to be properly queried.");
 foreach (var s in commands)
 SendData("PRIVMSG", user + " " + s.Key + ": " + s.Value);
 SendData("PRIVMSG", user + " (* - optional parameter)");
 }
 private void Userlist() {
 StringBuilder _out = new StringBuilder();
 foreach (var s in userList) {
 _out.Append(s.Name + "(" + s.Access + ") ");
 }
 SendMessage(_out.ToString());
 _out = null;
 }

 private void _Message()
 {
 if (ex.Length == 7)
 if (userList.FirstOrDefault(e => e.Name == ex[5]) != null)
 {
 var m = new Message
 {
 Sender = realn,
 Contents = ex[6],
 Date = DateTime.UtcNow
 };

 if (userList.First(e => e.Name == realn).Messages == null)
 userList.First(e => e.Name == ex[5]).Messages = new List<Message> {m};
 else
 userList.First(e => e.Name == ex[5]).Messages.Add(m);
 SendMessage("Message recorded and will be sent to " + ex[5]);
 File.WriteAllText("users.json", JsonConvert.SerializeObject(userList, Formatting.Indented));
 } else SendMessage("User does not exist in database.");
  else SendMessage("Too few paramaters");
 }
 private void Seen()
 {
 if (ex.Length >= 6)
 if (userList.FirstOrDefault(e => e.Name == realn) != null) {
 var u = userList.FirstOrDefault(e => e.Name == realn);
 SendMessage(u.Name + " was last seen on: " + u.Seen + " (UTC)");
 } else SendMessage("User not in directory.");
 else SendMessage("Not enough parameters");
 }
 // split input string by maxlen and return array
 public static IEnumerable<string> StrSplit(string str, int maxLength) {
 for (var i = 0; i < str.Length; i += maxLength)
 yield return str.Substring(i, Math.Min(maxLength, str.Length - i));
 }
 // check whether or not respond to user by
 // identifying the amount of commands they've
 // issued in the past minute
 public bool UserTimeout()
  {
 var doTimeout = false;
 if (userAttempts[realn] == 3)
 if (userList.First(e => e.Name == realn).Seen.AddMinutes(1) < DateTime.UtcNow)
 userAttempts[realn] = 0;
 else doTimeout = true;
 else
 if (userList.First(e => e.Name == realn).Access > 2)
 userAttempts[realn] += 1;
 return doTimeout;
 }
 // initialise connection to server
 public void Connect() {
 try {
 _connection = new TcpClient(_config.Server, _config.Port);
 } catch {
 Console.WriteLine("Connection failed.");
 }
 try {
 _ns = _connection.GetStream();
 _sr = new StreamReader(_ns);
 _sw = new StreamWriter(_ns);
 _log = new StreamWriter("_logs.txt", true);
  _log.AutoFlush = true;
  
 Console.WriteLine(_config.Nick + " " + _config.Name);
 SendData("USER", _config.Nick + " 0 * " + _config.Name);
 SendData("NICK", _config.Nick);
 } catch {
 Console.WriteLine("Communication error.");
 throw;
 }
 userList = JsonConvert.DeserializeObject<List<User>>(File.ReadAllText("users.json"));
 if (userList == null) {
 Console.WriteLine("Failed to initialise JSON object from file");
 Console.ReadLine();
 Environment.Exit(0);
 }
 }
 // send raw data to server
 public void SendData(string cmd, string param) {
 if (param == null) {
 _sw.WriteLine(cmd);
 _sw.Flush();
 Console.WriteLine(cmd);
 } else {
 _sw.WriteLine(cmd + " " + param);
 _sw.Flush();
 Console.WriteLine(cmd + " " + param);
 }
 }
 public void SendMessage(string message) {
 SendData("PRIVMSG", ex[2] + " " + message);
 }
 // send a GET request to given URL
 public string HttpGET(string url) {
 var request = (HttpWebRequest)WebRequest.Create(url);
 request.Method = "GET";
 string response;
 using (var httpr = (HttpWebResponse)request.GetResponse()) {
 response = new StreamReader(httpr.GetResponseStream()).ReadToEnd();
 }
 return response;
 }

 public void Runtime()
 {
 var shouldRun = true;
 while (shouldRun)
 {
 var data = _sr.ReadLine();
 ex = data.Split(sep, 7);
 user = ex[0].Split('!')[0].Substring(1);
 if (Regex.IsMatch(ex[0], @"(:.+!.+@*)"))
 {
 realn = ex[0].Split('!', '@')[1];
 if (realn.StartsWith("~"))
 realn = realn.Substring(1);
 }
 Console.WriteLine(data);
 _log.WriteLine(data);
 if (!_config.Joined)
 {
 if (ex[1] == "MODE") {
 SendData("PRIVMSG", "NICKSERV IDENTIFY ******");

 foreach (var s in _config.Channels) {
 SendData("JOIN", s);
 _config.Joined = true;
 channels.Add(s);
 }
 }
 }
 
 if (ex[1] == "JOIN")
 {
 if (userList.FirstOrDefault(e => e.Name == realn) != null)
 {
 foreach (var m in userList.First(e => e.Name == realn).Messages)
 SendData("PRIVMSG", user + " " + m.Sender + " (" + m.Date + ") — " + m.Contents);
 userList.First(e => e.Name == realn).Messages = null;
 File.WriteAllText("users.json", JsonConvert.SerializeObject(userList, Formatting.Indented));
 }
 }
 if (userList.FirstOrDefault(e => e.Name == realn) == null
 && realn != "NickServ"
 && realn != "ChanServ"
 && realn != "Evealyn"
 && realn != "") {
 userList.Add(new User
 {
 Name = realn,
 Access = 2,
  Seen = DateTime.UtcNow
  });
 File.WriteAllText("users.json", JsonConvert.SerializeObject(userList, Formatting.Indented));
 }
 else
 {
  if (userList.FirstOrDefault(e => e.Name == realn) != null)
 {
  userList.First(e => e.Name == realn).Seen = DateTime.UtcNow;
 File.WriteAllText("users.json", JsonConvert.SerializeObject(userList, Formatting.Indented));
 }
 }
 if (ex[0] == "PING")
 SendData("PONG", ex[1]);
 if (ex.Length > 4)
 if (ex[3].ToLower() == ":eve"
 || ex[3].ToLower() == ":eve,")
 {
 if (!userAttempts.ContainsKey(realn))
 userAttempts.Add(realn, 0);
 if (!UserTimeout())
 {
 var command = ex[4];
 switch (command.ToLower())
 {
 case "join":
  if (userList.First(e => e.Name == realn).Access < 2)
 Join();
 break;
 case "part":
 case "leave":
 if (userList.First(e => e.Name == realn).Access < 2)
 Part();
 break;
 case "say":
 Say();
 break;
 case "chanlist":
 case "channels":
 SendMessage(string.Join(", ", channels.ToArray()));
 break;
 case "define":
 Define();
 break;
 case "lookup":
 Lookup();
 break;
 case "message":
 _Message();
 break;
 case "help":
  Help();
 break;
 case "userlist":
 Userlist();
 break;
 case "seen":
 Seen();
 break;
 case "about":
 SendMessage("Evealyn Bot is a sophisticated and damn fine IRC bot created by SemiViral. Version 1.0");
  break;
 case "shutdown": if (userList.First(e => e.Name == realn).Access < 2)
 {
 SendMessage("Goodybe.");
 shouldRun = false;
 }
 break;
 default:
  SendMessage("Please provide a valid command.");
 break;
 }
 }
 }
 else if (ex[3] == "=")
 {
 // Create a List of users upon channel connections
 var u = new List<string>()
 {
 ex[5].Substring(1)
 };

 if (ex.Length > 6)
 ex[6].Split(' ').ToList().ForEach(x => u.Add(x));
 // Add the list of channel users to
 // specified channel index
 users.Add(ex[4], u);
 }
 }
 }
 }

internal class Eve
 {
 private static void Main(string[] args) {
 var conf = new Config() {
 Name = "Evealyn",
 Nick = "Eve",
 Port = 6667,
 Server = "irc.foonetic.net",
 Channels = new[] { "#testgrounds2", "#ministryofsillywalks" }
 };

 using (var bot = new IRCBot(conf))
 {
 conf.Joined = false;
 bot.Connect();
 bot.Runtime();
 }
 Console.WriteLine("Bot has shutdown.");
 Console.ReadLine();
 }
 }
} 

internal class IRCBot : IDisposable, IModule {
  private readonly Dictionary<string, List<string>> users = new Dictionary<string, List<string>>();
 private readonly Dictionary<string, int> userAttempts = new Dictionary<string, int>();
 private readonly Dictionary<string, string> commands = new Dictionary<string, string>
 {
 {"join", "(join <channel>) - joins specified channel."},
 {"part", "(part <channel> <message*>) - parts specified channel."},
 {"leave", "(part <channel> <message*>) - parts specified channel."},
 {"say", "(say <channel*> <message>) - sends privmsg to target channel."},
 {"chanlist", "Provides a list of channels joined."},
 {"channels", "Provides a list of channels joined."},
 {"userlist", "List all users currently in database and their access number."},
 {"define", "(define <word> <part of speech*>) - outputs a dictionary definition for the specified word."},
 {"lookup", "(lookup <target article>) - outputs the contents of a specified wikipedia article."},
 {"message", "(message <recipient> <mesaage>) - sends a message to specified user, to be sent when they login again."},
 {"seen", "(seen <target>) - Outputs the last DateTime of the target user being active."},
 {"about", "Print out the version and creator information of the bot."},
 {"shutdown", "Closes program."}
 };
 private Config _config;
 private TcpClient _connection;
 private StreamWriter _log;
 private NetworkStream _ns;
 private StreamReader _sr;
 private StreamWriter _sw;
 private readonly List<string> channels = new List<string>();
 private readonly List<string> nameDenyList = new List<string>()
 {
 "NickServ", "ChanServ",
 "vervet.foonetic.net",
 "Eve"
 };
 private List<User> userList;
 private string recipient;
 // set config 
 public IRCBot(Config config) {
 _config = config;
 }
 public void Dispose() {
 _sr?.Close();
 _sw?.Close();
 _ns?.Close();
 _log?.Close();
 _connection?.Close();
 }
 public void OnChannelEvent(ChannelEvent e) {
 throw new NotImplementedException();
 }
  public void OnChannelMessage(ChannelMessage c) {
 recipient = c.Recipient;
 
 if (QueryName(c.Realname) == null
 && !nameDenyList.Contains(c.Realname)) {
 userList.Add(new User {
 Name = c.Realname,
 Access = 2,
 Seen = DateTime.UtcNow
 });
 } else if (QueryName(c.Realname) != null)
 userList.First(e => e.Name == c.Realname).Seen = DateTime.UtcNow;
 if (!userAttempts.ContainsKey(c.Realname))
 userAttempts.Add(c.Realname, 0);
 if (!users.ContainsKey(c.Recipient)
 && c.Recipient.StartsWith("#"))
 users.Add(c.Recipient, new List<String>());
 File.WriteAllText("users.json", JsonConvert.SerializeObject(userList, Formatting.Indented));
 string[] arg = null;
 if (c.Args != null) {
 arg = c.Args.ToLower().Split(new char[] { ' ' }, 4);
 }
 switch (c.Type) {
 case "PRIVMSG":
 if (arg == null) return;
 if (QueryName(c.Realname) == null) return;
 var access = userList.First(e => e.Name == c.Realname).Access;
 string msg,
 chan;
 if (arg[0] != "eve"
 && arg[0] != "eve,")
 return;
 if (UserTimeout(c.Realname)) return;
 if (arg[1] != null)
 switch (arg[1]) {
 case "join":
 if (access > 1) {
 SendMessage("Insufficient permissions.");
 return;
 }
 if (String.IsNullOrEmpty(arg[2])) {
 SendMessage("Insufficient parameters. Type 'eve help join' to view correct usage.");
 }
 if (!arg[2].StartsWith("#")) {
 SendMessage("Channel argument must be a proper channel name (i.e. starts with '#').");
 return;
 }
 if (channels.Contains(arg[2]))
 {
 SendMessage("I'm already in that channel.");
 return;
 }
 Join(arg[2]);
 break;
 case "part":
 case "leave":
 if (access > 1) {
 SendMessage("Insufficient permissions.");
 return;
 }
 if (String.IsNullOrEmpty(arg[2])) {
 SendMessage("Insufficient parameters. Type 'eve help part' to view correct usage.");
 return;
 }
 if (!arg[2].StartsWith("#")) {
 SendMessage("Channel argument must be a proper channel name (i.e. starts with '#').");
 return;
 }
 if (!channels.Contains(arg[2])) {
 SendMessage("I'm not in that channel.");
 return;
 }
 Part(arg[2], arg[3]);
 break;
 case "say":
 if (arg.Length < 3
 || (arg[2].StartsWith("#")
 && arg.Length < 4)) {
 SendMessage("Insufficient parameters. Type 'eve help say' to view correct usage.");
 return;
 }
 msg = (!arg[2].StartsWith("#") && arg.Length > 4)
 ? arg[2] + " " + arg[3]
 : arg[2];
 chan = (arg[2].StartsWith("#")) ? arg[2] : null;
 Say(chan, msg);
 break;
 case "chanlist":
 case "channels":
 SendMessage(string.Join(" ", channels.ToArray()));
 break;
 case "define":
 if (arg.Length < 3) {
 SendMessage("Insufficient parameters. Type 'eve help define' to view correct usage.");
 return;
 }
 var pos = (arg.Length < 4) ? null : arg[3];
 Define(arg[2], pos);
 break;
 case "lookup":
 if (arg.Length < 3) {
 SendMessage("Insufficient parameters. Type 'eve help lookup' to view correct usage.");
 return;
 }
 var query = (arg.Length < 4) ? arg[2] : arg[2] + "%20" + arg[3];
 query = query.Replace(" ", "%20");
 Lookup(query, c.Nickname);
 break;
 case "message":
 if (arg.Length < 3
 || arg.Length < 4) {
 SendMessage("Insufficient parameters. Type 'eve help message' to view correct usage.");
 return;
 }
 if (QueryName(arg[2]) == null) {
 SendMessage("User does not exist in database.");
 return;
 }
 Message(c.Realname, arg[2], Regex.Escape(arg[3]));
 break;
 case "help":
 if (arg.Length > 3
 && !commands.ContainsKey(arg[2])) {
 SendMessage("Command does not exist.");
 return;
 }
 var cmd = (arg.Length < 3) ? null : arg[2];
 Help(c.Nickname, cmd);
 break;
 case "userlist":
 Userlist();
 break;
 case "seen":
 if (arg.Length < 3) {
 SendMessage("Insufficient parameters. Type 'eve help message' to view correct usage.");
 return;
 }
 if (QueryName(arg[2]) == null) {
 SendMessage("User does not exist in database.");
 return;
 }
 Seen(arg[2]);
 break;
 case "about":
 SendMessage("Evealyn Bot is a sophisticated and damn fine IRC bot created by SemiViral. Version 1.0");
 break;
 case "shutdown":
 if (access > 1) {
 SendMessage("Goodybe.");
 Eve.Run = false;
 } else SendMessage("Insufficient permissions.");
 break;
 default:
 SendMessage("Invalid command.");
 break;
 } else
 SendMessage("Please provide a command. Type 'eve help' to obtain my command list.");
 break;
 case "JOIN":
 Console.WriteLine(c.Realname);
 if (c.Realname == "Eve") return;
 if (QueryName(c.Realname) != null) {
 foreach (var m in userList.First(e => e.Name == c.Realname).Messages)
 SendData("PRIVMSG", c.Nickname + " (" + m.Date + ") " + m.Sender + ": " + Regex.Unescape(m.Contents));
 userList.First(e => e.Name == c.Realname).Messages = null;
 }
 users[c.Recipient].Add(c.Realname);
 break;
 case "PART":
 users[c.Recipient].Remove(c.Realname);
 break;
 case "MODE":
 if (!_config.Joined)
 {
 _config.Joined = true;
 SendData("PRIVMSG", "NICKSERV IDENTIFY evepass");
 foreach (var s in _config.Channels)
 {
 Join(s);
 }
 }
 break;
  case "353":
 var key = Regex.Matches(c.Args, @"(#\w+)");
 var list = key.Cast<Match>().Select(match => match.Value).ToList();
  foreach (var s in c.Args.Split(':')[1].Split(' '))
  users[list[0]].Add(s);
  break;
 }
  File.WriteAllText("users.json", JsonConvert.SerializeObject(userList, Formatting.Indented));
 }

 // command operations for main switch()
  private void Join(string chan)
 {
 SendMessage("Joining " + chan + ".");
 SendData("JOIN", chan);
 channels.Add(chan);
 }
 private void Part(string chan, string msg) {
 if (msg == null) {
 SendMessage("Leaving channel " + chan + ".");
 SendData("PART", chan);
 } else {
 SendMessage("Leaving channel " + chan + " for reason: " + msg);
 SendData("PART", chan + " " + msg);
 }
 channels.Remove(chan);
 users.Remove(chan);
 }
 private void Say(string chan, string msg) {
 if (String.IsNullOrEmpty(chan))
 SendMessage(msg);
 else
 SendData("PRIVMSG", chan + " " + msg);
 }
 private void Define(string word, string pos) {
  var url = (String.IsNullOrEmpty(pos))
 ? "https://api.pearson.com:443/v2/dictionaries/lasde/entries?headword=" + word + "&limit=1"
 : "https://api.pearson.com:443/v2/dictionaries/lasde/entries?headword=" + word + "&part_of_speech=" + pos + "&limit=1";
 var entry = JObject.Parse(HttpGET(url));
  var _out = new Dictionary<string, string>();
 if ((int)entry.SelectToken("count") < 1) {
 SendMessage("Query returned no results.");
 return;
 }
 _out.Add("word", (string)entry.SelectToken("results[0].headword"));
 _out.Add("pos", (string)entry.SelectToken("results[0].part_of_speech"));
 _out.Add("def", (string)entry.SelectToken("results[0].senses[0].definition[0]"));
 _out.Add("ex", (string)entry.SelectToken("results[0].senses[0].examples[0].text"));
 var sOut = (String.IsNullOrEmpty(_out["ex"]))
 ? _out["word"] + " [" + _out["pos"] + "] — " + _out["def"]
 : _out["word"] + " [" + _out["pos"] + "] — " + _out["def"] + " (ex. " + _out["ex"] + ")";
 SendMessage(sOut);
 }
 private void Lookup(string query, string nick) {
 var response =
 HttpGET("https://en.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&exintro=&explaintext=&titles=" +
  query);
 var pages = JObject.Parse(response)["query"]["pages"].Values().First();
 var title = (string)pages["title"];
 var content = title + " — " + Regex.Replace((string)pages["extract"], @"\r\n?|\n", "");
 var _out = StrSplit(content, 450);
 foreach (var s in _out)
 SendData("PRIVMSG", nick + " " + s);
 }
 private void Help(string nick, string cmd) {
 if (String.IsNullOrEmpty(cmd)) {
 SendData("PRIVMSG", nick + " Each command must be proceeded with \"eve\" or \"eve,\" to be properly queried.");
 foreach (var s in commands)
 SendData("PRIVMSG", nick + " " + s.Key + ": " + s.Value);
 SendData("PRIVMSG", nick + " (* - optional parameter)");
 } else {
 SendData("PRIVMSG", nick + " " + cmd + ": " + commands[cmd]);
 }
 }
 private void Userlist() {
 var _out = new StringBuilder();
 foreach (var s in userList) {
 _out.Append(s.Name + "(" + s.Access + ") ");
 }
 SendMessage(_out.ToString());
 }
 private void Message(string sender, string who, string msg) {
 var m = new Message {
 Sender = sender,
 Contents = msg,
 Date = DateTime.UtcNow
 };
 if (QueryName(who).Messages == null)
  userList.First(e => e.Name == who).Messages = new List<Message> { m };
 else
 userList.First(e => e.Name == who).Messages.Add(m);
 SendMessage("Message recorded and will be sent to " + who);
 }
 private void Seen(string who) {
 var u = userList.FirstOrDefault(e => e.Name == who);
 SendMessage(u.Name + " was last seen on: " + u.Seen + " (UTC)");
 }
 // split input string by maxlen and return array
 public static IEnumerable<string> StrSplit(string str, int maxLength) {
 for (var i = 0; i < str.Length; i += maxLength)
 yield return str.Substring(i, Math.Min(maxLength, str.Length - i));
 }
 public User QueryName(string name) {
 return userList.FirstOrDefault(e => e.Name == name);
 }
 // check whether or not respond to user by
 // identifying the amount of commands they've
 // issued in the past minute
 public bool UserTimeout(string who) {
 var doTimeout = false;
 if (userAttempts[who] == 3)
 if (QueryName(who).Seen.AddMinutes(1) < DateTime.UtcNow)
 userAttempts[who] = 0;
 else doTimeout = true;
 else
 if (QueryName(who).Access > 1)
 userAttempts[who] += 1;
 return doTimeout;
 }
 // initialise connection to server
 public void Connect() {
 try {
 _connection = new TcpClient(_config.Server, _config.Port);
 } catch {
 Console.WriteLine("Connection failed.");
 }
 try {
 _ns = _connection.GetStream();
 _sr = new StreamReader(_ns);
 _sw = new StreamWriter(_ns);
 _log = new StreamWriter("_logs.txt", true) { AutoFlush = true };

 Console.WriteLine(_config.Nick + " " + _config.Name);
 SendData("USER", _config.Nick + " 0 * " + _config.Name);
 SendData("NICK", _config.Nick);
 } catch {
 Console.WriteLine("Communication error.");
 throw;
 }
 userList = JsonConvert.DeserializeObject<List<User>>(File.ReadAllText("users.json"));
 if (userList == null) {
 Console.WriteLine("Failed to initialise JSON object from file");
 return;
 }
 }
 // send raw data to server
 public void SendData(string cmd, string param) {
 if (param == null) {
 _sw.WriteLine(cmd);
 _sw.Flush();
 Console.WriteLine(cmd);
 } else {
 _sw.WriteLine(cmd + " " + param);
 _sw.Flush();
 Console.WriteLine(cmd + " " + param);
 }
 }
 public void SendMessage(string message) {
 SendData("PRIVMSG", recipient + " " + message);
 }
 // send a GET request to given URL
 public string HttpGET(string url) {
 var request = (HttpWebRequest)WebRequest.Create(url);
 request.Method = "GET";
 string response;
 using (var httpr = (HttpWebResponse)request.GetResponse()) {
 response = new StreamReader(httpr.GetResponseStream()).ReadToEnd();
 }
 return response;
 }
 public void Runtime() {
 var data = _sr.ReadLine();
 var mTime = DateTime.UtcNow;
 var mRegex = new Regex(@"^:(?<Sender>[^\s]+)\s(?<Type>[^\s]+)\s(?<Recipient>[^\s]+)\s?:?(?<Args>.*)", RegexOptions.Compiled);
 var sRegex = new Regex(@"^(?<Nickname>[^\s]+)!(?<Realname>[^\s]+)@(?<Hostname>[^\s]+)", RegexOptions.Compiled);
 var aRegex = new Regex(@"^:(?<Arg1>[^\s]+)\s(?<Arg2>[^\s]+)\s(?<Arg3>[^\s]+)\s?:?(?<Arg4>.*)", RegexOptions.Compiled);
 var pRegex = new Regex(@"^PING :(?<Message>.+)", RegexOptions.None);
 Console.WriteLine(data);
 _log.WriteLine(data);
 if (mRegex.IsMatch(data)) {
 var mVal = mRegex.Match(data);
 var mSender = mVal.Groups["Sender"].Value;
 var sMatch = sRegex.Match(mSender);
 var c = new ChannelMessage() {
  Nickname = mSender,
 Realname = mSender,
 Hostname = mSender,
 Type = mVal.Groups["Type"].Value,
 Recipient = (mVal.Groups["Recipient"].Value.StartsWith(":"))
  ? mVal.Groups["Recipient"].Value.Substring(1)
 : mVal.Groups["Recipient"].Value,  Args = mVal.Groups["Args"].Value,
 Time = DateTime.UtcNow
 };
 if (sMatch.Success)
 {
 var realname = sMatch.Groups["Realname"].Value;
 c.Nickname = sMatch.Groups["Nickname"].Value;
 c.Realname = (realname.StartsWith("~")) ? realname.Substring(1) : realname;
 c.Hostname = sMatch.Groups["Hostname"].Value;
 }
 OnChannelMessage(c);
 } else if (pRegex.IsMatch(data)) {
 SendData("PONG", pRegex.Match(data).Value);
 }
 }
 }
}

internal class Eve {
 public static bool Run = true;
  private static void Main(string[] args) {
 var conf = new Config() {
 Name = "Evealyn",
 Nick = "Eve",
 Port = 6667,
 Server = "irc.foonetic.net",
 Channels = new[] { "#testgrounds2" },
 Joined = false
 };
 using (var bot = new IRCBot.IRCBot(conf)) {
 bot.Connect();
 while (Run) {
 bot.Runtime();
 }
 }
 Console.WriteLine("Bot has shutdown.");
 Console.ReadLine();
 }
} 

The currently posted code is a second revision; I refactored it to use Regex and some far more efficient processing techniques.