simple fullscreen interbbs/internode chat client

exec/load/json-chat.js

+if(!js.global.JSONClient) 
+	load(js.global,"json-client.js");
+	
+function JSONChat(jsonclient) {
+
+	this.nick = new Nick(user.handle,system.name,user.ip_address);
+	this.channels = {};
+	this.client = jsonclient;
+	if(!this.client) 
+		this.client = new JSONClient();
+
+	this.connect = function() {
+		this.client.subscribe("chat.channels." + this.nick.name + ".messages");
+	}
+	
+	this.submit = function(target,str) {
+		var message = new Message(this.nick,str,Date.now());
+		this.client.write("chat.channels." + target + ".messages",message,2);
+		this.client.push("chat.channels." + target + ".history",message,2);
+		this.channels[target.toUpperCase()].messages.push(message);
+	}
+	
+	this.clear = function(target) {
+		this.client.write("chat.channels." + target + ".history",[],2);
+		this.channels[target.toUpperCase()].messages = [];
+	}
+	
+	this.join = function(target,str) {
+		this.client.subscribe("chat.channels." + target + ".messages");
+		this.channels[target.toUpperCase()] = new Channel(target);
+		var history = this.client.read("chat.channels." + target + ".history",1);
+		var msgcount = 0;
+		for each(var m in history) {
+			this.channels[target.toUpperCase()].messages.push(m);
+			msgcount++;
+		}
+		if(msgcount == 0) 
+			this.clear(target);
+		this.channels[target.toUpperCase()].users = this.client.who("chat.channels." + target + ".messages");
+	}
+	
+	this.part = function(target) {
+		this.client.unsubscribe("chat.channels." + target + ".messages");
+		delete this.channels[target.toUpperCase()];
+	}
+	
+	this.who = function(target,str) {
+		this.channels[target.toUpperCase()].users = this.client.who("chat.channels." + target + ".messages");
+		return this.channels[target.toUpperCase()].users;
+	}
+	
+	this.disconnect = function() {
+		this.client.unsubscribe("chat." + this.nick.name + ".messages");
+	}
+	
+	/* pass any client update packets to this function to process inbound messages/status updates */
+	this.update = function(packet) {
+		var arr = packet.location.split(".");
+		if(arr.shift().toUpperCase() != "CHAT") 
+			return false;
+			
+		var channel;
+		var usr;
+		
+		while(arr.length > 0) {
+			switch(arr.shift().toUpperCase()) {
+			case "CHANNELS":
+				channel = this.channels[arr[0].toUpperCase()];
+				break;
+			case "MESSAGES":
+				channel.messages.push(packet.data);
+				break;
+			case "USERS":
+				usr = channel.users[arr[0].toUpperCase()];
+				break;
+			}
+		}
+	}
+	
+	/* check client for update packets */
+	this.cycle = function() {
+		this.client.cycle();
+		while(this.client.updates.length) 
+			this.update(this.client.updates.shift());
+	}
+
+	/* process chat commands */
+	this.handle_command = function(target,cmdstr) {
+		/* if the command string is empty */
+		if(!cmdstr) 
+			return false;
+			
+		cmdstr = cmdstr.split(" ");
+		switch(cmdstr[0].toUpperCase()) {
+		case "JOIN":
+			cmdstr.shift();
+			var chan = cmdstr.shift();
+			if(chan)
+				this.join(chan,cmdstr.join(" "));
+			break;
+		case "PART":
+			cmdstr.shift();
+			var chan = cmdstr.shift();
+			if(!chan)
+				chan = target;
+			this.part(chan);
+			break;
+		case "KICK":
+			// todo
+			break;
+		case "CLEAR":	
+			this.clear(target);
+			break;
+		case "WHO":
+			var users = this.who(target);
+			for(var u in users)
+				this.channels[target.toUpperCase()].messages.push(users[u]);
+			break;
+		case "INVITE":
+			break;
+		case "DISCONNECT":
+		case "CLOSE":
+			this.disconnect();
+			break;
+		case "CONNECT":
+		case "OPEN":
+			this.connect();
+			break;
+		case "IGNORE":
+			// todo
+			break;
+		case "BAN":
+			// todo
+			break;
+		}
+	}
+	
+	/* user identification object */
+	function Nick(name,host,ip)	{
+		this.name = name;
+		this.host = host;
+		this.ip = ip;
+	}
+	
+	/* channel object (stores users and messages) */
+	function Channel(name) {
+		this.name = name;
+		this.messages = [];
+		this.users = [];
+	}
+	
+	/* message object (Nick, String, Time) */
+	function Message(nick,str,time) {
+		this.nick = nick;
+		this.str = str;
+		this.time = time;
+	}
+}