vm-irc/js/app.js

/*
 Copyright (c) 2019 Farooq Karimi Zadeh <fkz@riseup.net>
 VM-IRC is under GNU LGPL 3 or at your option any later version and comes
 without any warranty from author(s).
*/
var nick_ = null, channel = null, sock = null, firsttime = true;
var quit = false;
var UTF8 = {
	encode: function(s){
        return unescape(encodeURIComponent(s));
	},
	decode: function(s){
		return decodeURIComponent(escape(s));
	}
};

document.onkeydown = function (e) {
    switch (e.key) {
        case "Enter":
            if (sock == null || sock.readyState != "open"){
                alert("socket not ready!");
                break;
            }
            var msg_text = prompt("Message to channel");
            if (msg_text == null)
                break;
            var msg_to_add =  "<span style=\"color: gray\">" + "&lt;" + nick_ +
            "&gt; " + msg_text + "<br>" + "</span>";

            document.getElementById("messages").innerHTML += msg_to_add;
            msg_text = UTF8.encode(msg_text);
            sock.send("PRIVMSG " + channel + " :" + msg_text + "\r\n");
            window.scrollByLines(3);
            break;

        case "SoftRight":
            if (sock != null && sock.readyState == "open"){
                quit = true;
                sock.send("QUIT\r\n");
                sock.close();
            }
            window.close();
            break;

        case "SoftLeft":
            var towhom = prompt("To whom?");
            if (towhom == null)
                break;
            var msg_text = prompt("Message to " + towhom);
            if (msg_text == null)
                break;

            document.getElementById("messages").innerHTML += "&gt;" + nick_
            + "&lt; " +msg_text+ "<br>";
            msg_text = UTF8.encode(msg_text);
            sock.send("PRIVMSG " + towhom + " :" + msg_text + "\r\n");
            break;
        
        case "1":
            var current_size = Number(document.body.style.fontSize.replace("px", ""));
            if (current_size === 0) break;
            current_size--;
            document.body.style.fontSize = current_size.toString() + "px";
            break;
        case "2":
            document.body.style.fontSize = "12px";
            break;
        case "3":
            var current_size = Number(document.body.style.fontSize.replace("px", ""));
            if (current_size === "64") break;
            current_size++;
            document.body.style.fontSize = current_size.toString() + "px";
            break;
    }
}

window.onload = function (e) {
    var def;
    document.body.style.fontSize = "12px";
    if (nick_ === null){
        def = window.localStorage.getItem("nick");
        if (def === null){
            nick_ = prompt("Nick (max 9 chars)");
        }else{
            nick_ = prompt("Nick (max 9 chars) or press OK for " + def);
            if (nick_ === ""){
                nick_ = def;
            }
        }
        window.localStorage.setItem("nick", nick_);
    }
    if (nick_ === null) window.close();
    if (channel === null){
        def = window.localStorage.getItem("channel");
        if (def === null){
            channel = prompt("Channel(just one!)", def);
        }else{
            channel = prompt("Channel(just one!) or press OK for " + def);
            if (channel === ""){
                channel = def;
            }
        }
        window.localStorage.setItem("channel", channel);
    }
    if (channel === null) window.close();
    if (!channel.startsWith("#"))
        channel = "#" + channel;
    sock = navigator.mozTCPSocket.open("irc.freenode.net",6697,{useSecureTransport: true});

    sock.onopen = function (e) {
        e.target.send("USER vm-irc vm-irc vm-irc :VM-IRC User\r\n");
        e.target.send("NICK " + nick_ + "\r\n");
        e.target.send("JOIN " + channel + "\r\n");
    }

    sock.ondata = function (e) {
        if (!(typeof(e.data) === "string"))
            return;
        var msgs = e.data.split("\r\n");
        for (let msg of msgs){
            if (msg.startsWith("PING")){
                e.currentTarget.send("PONG " + msg.split(" ")[1] + "\r\n");
            }
            msg = UTF8.decode(msg);
            var token = msg.split(" ", 3);
            var nick = token[0].split("!")[0].replace(":", "");
            if (token[1] === "PRIVMSG"){
                var target = token[2];
                var msg_text = msg.slice(msg.search(" :") + 2, msg.length);
                if (target === channel){
                    nick = "&lt;" + nick + "&gt;";
                }else if (target === nick_){
                    nick = "&gt;" + nick + "&lt;";
                }
                var text = nick + " " + msg_text + "<br>";
                if (msg_text.search(nick_) != -1 || target === nick_)
                    text = "<b>" + text + "<b>";
                    if (document.visibilityState === "hidden"){
                        if (window.Notification.permission === "granted"){
                            var vibrate_pattern = [200, 100, 200, 100, 200];
                            new window.Notification(nick, {body: msg_text,
                                                          vibrate:vibrate_pattern
                                                          });
                        }
                    
                    }
                document.getElementById("messages").innerHTML += text;
                window.scrollByLines(3);
            }
            if (token[1] === "NOTICE"){
                var msg_text = msg.slice(msg.search(" :") + 2, msg.length);
                var text = "-" + nick + "- " + msg_text + "<br>";
                document.getElementById("messages").innerHTML += text;
                window.scrollByLines(3);
            }

            if (token[1] === "JOIN"){
                document.getElementById("messages").innerHTML += nick + " joined.<br>";
                window.scrollByLines(1);
            }

            if (token[1] === "PART"){
                document.getElementById("messages").innerHTML += nick + " left.<br>";
                window.scrollByLines(1);
            }

            if (token[1] === "QUIT"){
                document.getElementById("messages").innerHTML += nick + " has quit.<br>";
                window.scrollByLines(1);
            }
            if (token[1] === "353"){ // Channel user list
                let nicks = msg.replace(/:/g, "").split(" ").slice(5).join(" ");
                if (firsttime)
                    document.getElementById("messages").innerHTML += "Users: ";
                document.getElementById("messages").innerHTML += nicks + " ";
            }
            if (token[1] === "366"){
                document.getElementById("messages").innerHTML += "<br>";
                firsttime = true;
            }
            if (token[1] === "332"){ // Reply to TOPIC command
                let topic = msg.slice(msg.replace(":", ".").search(":") + 1, msg.length);
                document.getElementById("messages").innerHTML += "Topic: " +
                topic + "<br>";
            }
            if (token[1] === "433"){ // Nick name already in use
                nick_ += "_";
                e.currentTarget.send("NICK " + nick_ + "\r\n");
            }
            if (token[1] === "NICK"){
                if (nick === nick_)
                    nick_ = token[2].replace(":", "");
                else
                    document.getElementById("messages").innerHTML += nick + " changed their nick to " + token[2].replace(":", "") + "<br>";
            }
        }
    }

    sock.onclose = function (e) {
        if (!quit){
            window.onload({});
        }
    }
}