[reliable-chat] / webclient / rc.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
  "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<!--
 reliable-chat - multipath chat
 Copyright (C) 2012  Scott Worley <sworley@chkno.net>
 Copyright (C) 2012  Jason Hibbs <skitch@gmail.com>

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU Affero General Public License as
 published by the Free Software Foundation, either version 3 of the
 License, or (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Affero General Public License for more details.

 You should have received a copy of the GNU Affero General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
-->
<head>
 <title>Reliable Chat</title>
  <style type="text/css"><!--/*--><![CDATA[/*><!--*/
	html, body {
		width: 99.9%;
		height: 100%;
		margin: 0;
		padding: 0;
		background-color: #293134;
		color: silver;
		font-family: monospace;
	}
	a {
		color: white;
	}
	#container {
		height: 100%;
	}
	#status {
		width: 100%;
		text-align: right;
		background-color: #293134;
		padding: 5px 5px 5px 0px;
	}
	#client {
		width: 98.5%;
		padding: 0px 0px 0px 5px;
		height: 50px;
		position: fixed;
		bottom: 0;
	}
	#input {
		width: 100%;
		background-color: #293134;
	}
	#say { width: 100% }
	#history {
		padding: 0px 5px 55px 5px;
		vertical-align: bottom
	}
	.banner {
		font-size: 85%;
		text-align: right;
	}
	.servercount {
		margin-right: -0.5em;
		font-size: 70%;
	}
	.timestamp:hover, .timestamp:hover .servertimestamps {
		background-color: #556;
	}
	.timestamp:hover .servertimestamps {
		display: block;
	}
	.servertimestamps {
	  display: none;
		position: absolute;
		left: 3em;
		z-index: 1;
		border: 1px solid black;
		border-radius: 5px;
		padding-left: 5px;
		padding-right: 5px;
	}
	img { width: 1px; height: 1px; }
	iframe { display: none }
	#status span { margin-right: 10px; }
	#status span.sad {
		background-color: #f00;
		color: #fff;
		border: 1px solid black;
		border-radius: 5px;
		padding-left: 5px;
		padding-right: 5px;
	}
	#status span.happy {
		background-color: #0f0;
		color: #000;
		border: 1px solid black;
		border-radius: 5px;
		padding-left: 5px;
		padding-right: 5px;
	}
  /*]]>*/--></style>
  <script type="text/javascript"><!--//--><![CDATA[//><!--
	var servers = ['chkno.net', 'rc2.chkno.net', 'echto.net', 'the-wes.com', 'vibrantlogic.com'];

	var session = Math.random();  // For outgoing message IDs
	var since = {};    // server -> time: For fetch?since=
	var seen = {};     // seen_key -> message
	var history = [];  // List of messages sorted by Time
	// Messages have these fields:
	//   Time: The timestamp.  Median of ServerTimes
	//   ID: Some unique string for deduping
	//   Text: The text of the message
	//   ServerTimes: server -> timestamp
	//   UI: The DOM node for this message in the UI

	function rcnick() {
		var nick = localStorage.getItem("nick");
		if (nick) {
			return nick;
		}
		return 'anonymous';
	}

	function rcsetnick(new_nick) {
		localStorage.setItem("nick", new_nick);
	}

	function rcserverbase(server) {
		// Add the default port if server doesn't contain a port number already
		if (server.indexOf(":") == -1) {
			return "http://" + server + ":21059";
		} else {
			return "http://" + server;
		}
	}

	function rcchangeserverstatus(server, new_status) {
		var statusbar = document.getElementById("status");
		var spans = statusbar.getElementsByTagName("span");
		for (var i in spans) {
			if (spans[i].firstChild && 'data' in spans[i].firstChild && spans[i].firstChild.data == server) {
				spans[i].setAttribute("class", new_status);
			}
		}
	}

	function rcpad2(x) {
		return (x < 10 ? "0" : "") + x;
	}
	function rcpad3(x) {
		return (x < 10 ? "00" : (x < 100 ? "0" : "")) + x;
	}

	function rcformattime(t) {
		var d = t.getDay();
		d = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"][d];
		var h = t.getHours();
		var m = t.getMinutes();
		var s = t.getSeconds();
		return d + " " + rcpad2(h) + ":" + rcpad2(m) + ":" + rcpad2(s);
	}

	function rcaddservertimestamptohover(message, server) {
		var divs = message.UI.getElementsByTagName("div");
		var t = message.ServerTimes[server];
		for (var i in divs) {
			if (divs[i].getAttribute && divs[i].getAttribute("class") == "servertimestamps") {
				var d = document.createElement("div");
				var text = t.getFullYear() + "-" +
					rcpad2(t.getMonth()) + "-" +
					rcpad2(t.getDay()) + " " +
					rcformattime(t) + "." +
					rcpad3(t.getMilliseconds()) + " " +
					server;
				d.appendChild(document.createTextNode(text));
				divs[i].appendChild(d);
			}
		}
	}

	function rcmakemessageUI(message) {
		message.UI = document.createElement("div");

		// Server count
		var servercount = document.createElement("span");
		servercount.setAttribute("class", "servercount");
		servercount.appendChild(document.createTextNode(Object.keys(message.ServerTimes).length));
		message.UI.appendChild(servercount);
		message.UI.appendChild(document.createTextNode(" "));

		// Timestamp
		var timestamp_text = message.Time ? rcformattime(message.Time) : "";
		var timestamp = document.createElement("span");
		timestamp.setAttribute("class", "timestamp");
		timestamp.appendChild(document.createTextNode(timestamp_text));
		message.UI.appendChild(timestamp);
		message.UI.appendChild(document.createTextNode(" "));

		// Timestamp hover
		var timestamp_hover = document.createElement("div");
		timestamp_hover.setAttribute("class", "servertimestamps");
		timestamp.appendChild(timestamp_hover);
		for (var server in message.ServerTimes) {
			rcaddservertimestamptohover(message, server);
		}

		// Classify different message types
		var text_span = document.createElement("span");
		var type;
		if (/^\*\*\* /.test(message.Text)) {
			type = "status";
		} else if (/^\* /.test(message.Text)) {
			type = "me";
		} else {
			type = "text";
		}
		if (Object.keys(message.ServerTimes).length == 0) {
			type += " self";
		}
		text_span.setAttribute("class", type);

		// URL detection
		var text = message.Text;
		var URL_re = /\bhttps?:\/\/\S+/;
		while (URL_re.test(text)) {
			var match = URL_re.exec(text);
			var leading_text = text.substr(0, match.index);
			if (leading_text) {
				text_span.appendChild(document.createTextNode(leading_text));
			}
			var anchor = document.createElement("a");
			anchor.setAttribute("rel", "nofollow");
			anchor.setAttribute("href", encodeURI(match[0]));
			anchor.appendChild(document.createTextNode(match[0]));
			text_span.appendChild(anchor);
			text = text.substr(match.index + match[0].length);
		}
		if (text) {
			text_span.appendChild(document.createTextNode(text));
		}

		message.UI.appendChild(text_span);
	}

	function rcaddmessagetohistory(message) {
		var message_i;
		if (message.Time) {
			for (var i = history.length - 1; ; i--) {
				if (i < 0 || (history[i].Time && message.Time >= history[i].Time)) {
					message_i = i+1;
					history.splice(message_i, 0, message);
					break;
				}
			}
		} else {
			history.push(message);
			message_i = history.length-1;
		}

		if (!message.UI) {
			rcmakemessageUI(message);
		}
		var h = document.getElementById("history");
		if (message_i + 1 < history.length) {
			h.insertBefore(message.UI, history[message_i + 1].UI);
		} else {
			h.appendChild(message.UI);
		}
		window.scrollTo(0, document.body.scrollHeight);
	}

	function make_seen_key(id, text) {
		return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@");
	}

	function rcupdatemessagetime(message) {
		// Set message.Time to be the median of message.ServerTimes
		var times = [];
		for (var i in message.ServerTimes) {
			times.push(message.ServerTimes[i]);
		}
		times.sort();
		if (times.length % 2) {
			message.Time = times[(times.length-1)/2];
		} else {
			var middle = times.length/2;
			var difference = times[middle].getTime() - times[middle-1].getTime();
			message.Time = new Date(times[middle-1].getTime() + difference/2);
		}

		// This may have broken history's in-sorted-order invariant
		var hi = history.indexOf(message);
		if ((history[hi-1] && history[hi-1].Time > message.Time) ||
		    (history[hi+1] && history[hi+1].Time < message.Time)) {
			history.splice(hi,1);
			rcaddmessagetohistory(message);
		}

		// Update the UI
		var spans = message.UI.getElementsByTagName("span");
		for (var i in spans) {
			if (spans[i].getAttribute) {
				var type = spans[i].getAttribute("class");
				if (type == "servercount") {
					spans[i].firstChild.data = Object.keys(message.ServerTimes).length;
				} else if (type == "timestamp") {
					spans[i].firstChild.data = rcformattime(message.Time);
				}
			}
		}
	}

	function rcreceivemessages(server, messages) {
		for (var i in messages) {
			var m = messages[i];
			m.Time = new Date(m.Time);
			var seen_key = make_seen_key(m.ID, m.Text);
			if (seen_key in seen) {
				seen[seen_key].ServerTimes[server] = m.Time;
				rcupdatemessagetime(seen[seen_key]);
				rcaddservertimestamptohover(seen[seen_key], server);
			} else {
				m.ServerTimes = {};
				m.ServerTimes[server] = m.Time;
				seen[seen_key] = m;
				rcaddmessagetohistory(m);
				for (var i in servers) {
					rcchangeserverstatus(servers[i], "sad");
				}
			}
			rcchangeserverstatus(server, "happy");
		}
	}

	function rcfetch(server) {
		var delay = 10000;  // TODO: Exponential backoff
		var xhr = new XMLHttpRequest();
		xhr.onreadystatechange = function() {
			if (this.readyState == this.DONE) {
				if (this.status == 200) {
					var rtxt = this.responseText;
					if (rtxt != null) {
						var messages = JSON.parse(rtxt);
						if (messages != null) {
							delay = 40;
							if (messages.length >= 1 && "Time" in messages[messages.length-1]) {
								since[server] = messages[messages.length-1].Time;
							}
							rcreceivemessages(server, messages);
						}
					}
				}
				window.setTimeout(rcfetch, delay, server);
			}
		}
		var uri = rcserverbase(server) + "/fetch";
		if (server in since) {
			uri += '?since="' + since[server] + '"';
		}
		xhr.open("GET", uri);
		xhr.send();
	}

	function rcconnect() {
		for (var i in servers) {
			rcfetch(servers[i]);
			// Status bar entry
			var status_indicator = document.createElement("span");
			status_indicator.appendChild(document.createTextNode(servers[i]));
			status_indicator.setAttribute("class", "sad");
			document.getElementById("status").appendChild(status_indicator);
		}
	}

	function rcsend(d, message) {
		message.ID = new Date().getTime() + "-" + session + "-" + Math.random();
		seen[make_seen_key(message.ID, message.Text)] = message;
		var path = "/speak" +
			"?id=" + encodeURIComponent(message.ID) +
			"&text=" + encodeURIComponent(message.Text);
		for (var i in servers) {
			var uri = rcserverbase(servers[i]) + path;
			var img = document.createElement("img");
			img.setAttribute("src", uri);
			d.appendChild(img);
		}
	}

	function rcinput(input) {
		var message;
		var re = /^\/([a-z]+) (.*)/
		var match = re.exec(input);
		if (match && match[1] == 'me') {
			message = "* " + rcnick() + "  " + match[2];
		} else if (match && match[1] == 'nick') {
			message = "*** " + rcnick() + " is now known as " + match[2];
			rcsetnick(match[2]);
		} else {
			message = "<" + rcnick() + "> " + input;
		}

		var m = {'Text': message, 'ServerTimes': {}};
		rcaddmessagetohistory(m);
		rcsend(m.UI, m);
	}

	function rckeydown(event) {
		if (event.keyCode == 13) {
			rcinput(document.input.say.value);
			document.input.say.value = "";
			
		}
	}
  //--><!]]></script>

</head>

<body onload="rcconnect()">
	<div id="container">
		<div class="banner">(You are using <a href="https://github.com/chkno/reliable-chat">Reliable Chat</a>)</div>
		<div id="history"></div>
		<div id="client">
			<div id="input">
				<form name="input" onsubmit="return false" autocomplete="off">
					<input id="say" onkeydown="return rckeydown(event)" autocomplete="off" autofocus="autofocus"></input>
				</form></div>
			<div id="status">&nbsp;</div>
		</div>
	</div>
</body>
</html>
Commit	Line	Data
827f21bb SW	1	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
827f21bb SW	2	"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
827f21bb	3	<html xmlns="http://www.w3.org/1999/xhtml">
520c21fd SW	4	<!--
	5	reliable-chat - multipath chat
	6	Copyright (C) 2012 Scott Worley <sworley@chkno.net>
	7	Copyright (C) 2012 Jason Hibbs <skitch@gmail.com>
	8
	9	This program is free software: you can redistribute it and/or modify
	10	it under the terms of the GNU Affero General Public License as
	11	published by the Free Software Foundation, either version 3 of the
	12	License, or (at your option) any later version.
	13
	14	This program is distributed in the hope that it will be useful,
	15	but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	GNU Affero General Public License for more details.
	18
	19	You should have received a copy of the GNU Affero General Public License
	20	along with this program. If not, see <http://www.gnu.org/licenses/>.
	21	-->
827f21bb SW	22	<head>
827f21bb SW	23	<title>Reliable Chat</title>
0248a518	24	<style type="text/css"><!--/--><![CDATA[/><!--*/
70f46223 JH	25	html, body {
	26	width: 99.9%;
	27	height: 100%;
	28	margin: 0;
	29	padding: 0;
b22a2ced JH	30	background-color: #293134;
b22a2ced JH	31	color: silver;
70f46223 JH	32	font-family: monospace;
70f46223 JH	33	}
e04a2cfd SW	34	a {
	35	color: white;
	36	}
70f46223 JH	37	#container {
	38	height: 100%;
	39	}
	40	#status {
	41	width: 100%;
638866e9	42	text-align: right;
b22a2ced	43	background-color: #293134;
70f46223 JH	44	padding: 5px 5px 5px 0px;
	45	}
	46	#client {
	47	width: 98.5%;
	48	padding: 0px 0px 0px 5px;
	49	height: 50px;
	50	position: fixed;
	51	bottom: 0;
	52	}
	53	#input {
	54	width: 100%;
b22a2ced	55	background-color: #293134;
70f46223	56	}
0248a518	57	#say { width: 100% }
70f46223 JH	58	#history {
	59	padding: 0px 5px 55px 5px;
	60	vertical-align: bottom
	61	}
5afebfc6 SW	62	.banner {
	63	font-size: 85%;
	64	text-align: right;
	65	}
c0aac85a	66	.servercount {
33fdb071	67	margin-right: -0.5em;
c0aac85a SW	68	font-size: 70%;
c0aac85a SW	69	}
244a78af SW	70	.timestamp:hover, .timestamp:hover .servertimestamps {
	71	background-color: #556;
	72	}
	73	.timestamp:hover .servertimestamps {
	74	display: block;
	75	}
	76	.servertimestamps {
	77	display: none;
	78	position: absolute;
	79	left: 3em;
	80	z-index: 1;
	81	border: 1px solid black;
	82	border-radius: 5px;
	83	padding-left: 5px;
	84	padding-right: 5px;
	85	}
0248a518 SW	86	img { width: 1px; height: 1px; }
0248a518 SW	87	iframe { display: none }
70f46223	88	#status span { margin-right: 10px; }
f09c4ede JH	89	#status span.sad {
	90	background-color: #f00;
	91	color: #fff;
	92	border: 1px solid black;
	93	border-radius: 5px;
	94	padding-left: 5px;
	95	padding-right: 5px;
	96	}
	97	#status span.happy {
	98	background-color: #0f0;
	99	color: #000;
	100	border: 1px solid black;
	101	border-radius: 5px;
	102	padding-left: 5px;
	103	padding-right: 5px;
	104	}
0248a518 SW	105	/]]>/--></style>
	106	<script type="text/javascript"><!--//--><![CDATA[//><!--
	107	var servers = ['chkno.net', 'rc2.chkno.net', 'echto.net', 'the-wes.com', 'vibrantlogic.com'];
	108
da9ce2ab	109	var session = Math.random(); // For outgoing message IDs
869430fa SW	110	var since = {}; // server -> time: For fetch?since=
869430fa SW	111	var seen = {}; // seen_key -> message
7f54ca0a	112	var history = []; // List of messages sorted by Time
5419ea4c	113	// Messages have these fields:
40380bd3	114	// Time: The timestamp. Median of ServerTimes
5419ea4c SW	115	// ID: Some unique string for deduping
5419ea4c SW	116	// Text: The text of the message
705e26cf	117	// ServerTimes: server -> timestamp
5419ea4c	118	// UI: The DOM node for this message in the UI
0248a518 SW	119
	120	function rcnick() {
	121	var nick = localStorage.getItem("nick");
	122	if (nick) {
	123	return nick;
	124	}
	125	return 'anonymous';
	126	}
	127
	128	function rcsetnick(new_nick) {
	129	localStorage.setItem("nick", new_nick);
	130	}
	131
	132	function rcserverbase(server) {
	133	// Add the default port if server doesn't contain a port number already
	134	if (server.indexOf(":") == -1) {
	135	return "http://" + server + ":21059";
	136	} else {
	137	return "http://" + server;
	138	}
	139	}
	140
	141	function rcchangeserverstatus(server, new_status) {
	142	var statusbar = document.getElementById("status");
	143	var spans = statusbar.getElementsByTagName("span");
	144	for (var i in spans) {
	145	if (spans[i].firstChild && 'data' in spans[i].firstChild && spans[i].firstChild.data == server) {
	146	spans[i].setAttribute("class", new_status);
	147	}
	148	}
	149	}
	150
66b29e97 SW	151	function rcpad2(x) {
	152	return (x < 10 ? "0" : "") + x;
	153	}
	154	function rcpad3(x) {
	155	return (x < 10 ? "00" : (x < 100 ? "0" : "")) + x;
	156	}
	157
bd1ed9dd SW	158	function rcformattime(t) {
	159	var d = t.getDay();
	160	d = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"][d];
	161	var h = t.getHours();
	162	var m = t.getMinutes();
	163	var s = t.getSeconds();
66b29e97	164	return d + " " + rcpad2(h) + ":" + rcpad2(m) + ":" + rcpad2(s);
bd1ed9dd SW	165	}
bd1ed9dd SW	166
244a78af SW	167	function rcaddservertimestamptohover(message, server) {
244a78af SW	168	var divs = message.UI.getElementsByTagName("div");
66b29e97	169	var t = message.ServerTimes[server];
244a78af SW	170	for (var i in divs) {
	171	if (divs[i].getAttribute && divs[i].getAttribute("class") == "servertimestamps") {
	172	var d = document.createElement("div");
66b29e97 SW	173	var text = t.getFullYear() + "-" +
	174	rcpad2(t.getMonth()) + "-" +
	175	rcpad2(t.getDay()) + " " +
	176	rcformattime(t) + "." +
	177	rcpad3(t.getMilliseconds()) + " " +
	178	server;
244a78af SW	179	d.appendChild(document.createTextNode(text));
	180	divs[i].appendChild(d);
	181	}
	182	}
	183	}
	184
bf8f6a39 SW	185	function rcmakemessageUI(message) {
	186	message.UI = document.createElement("div");
	187
	188	// Server count
	189	var servercount = document.createElement("span");
	190	servercount.setAttribute("class", "servercount");
	191	servercount.appendChild(document.createTextNode(Object.keys(message.ServerTimes).length));
	192	message.UI.appendChild(servercount);
33fdb071	193	message.UI.appendChild(document.createTextNode(" "));
bf8f6a39 SW	194
	195	// Timestamp
	196	var timestamp_text = message.Time ? rcformattime(message.Time) : "";
	197	var timestamp = document.createElement("span");
	198	timestamp.setAttribute("class", "timestamp");
	199	timestamp.appendChild(document.createTextNode(timestamp_text));
	200	message.UI.appendChild(timestamp);
33fdb071	201	message.UI.appendChild(document.createTextNode(" "));
bf8f6a39	202
244a78af SW	203	// Timestamp hover
	204	var timestamp_hover = document.createElement("div");
	205	timestamp_hover.setAttribute("class", "servertimestamps");
	206	timestamp.appendChild(timestamp_hover);
	207	for (var server in message.ServerTimes) {
	208	rcaddservertimestamptohover(message, server);
	209	}
	210
3a89c414 SW	211	// Classify different message types
	212	var text_span = document.createElement("span");
	213	var type;
	214	if (/^\\\* /.test(message.Text)) {
	215	type = "status";
	216	} else if (/^\* /.test(message.Text)) {
	217	type = "me";
	218	} else {
	219	type = "text";
	220	}
	221	if (Object.keys(message.ServerTimes).length == 0) {
	222	type += " self";
	223	}
	224	text_span.setAttribute("class", type);
e04a2cfd SW	225
	226	// URL detection
	227	var text = message.Text;
	228	var URL_re = /\bhttps?:\/\/\S+/;
	229	while (URL_re.test(text)) {
	230	var match = URL_re.exec(text);
	231	var leading_text = text.substr(0, match.index);
	232	if (leading_text) {
	233	text_span.appendChild(document.createTextNode(leading_text));
	234	}
	235	var anchor = document.createElement("a");
606c01e1	236	anchor.setAttribute("rel", "nofollow");
e04a2cfd SW	237	anchor.setAttribute("href", encodeURI(match[0]));
	238	anchor.appendChild(document.createTextNode(match[0]));
	239	text_span.appendChild(anchor);
	240	text = text.substr(match.index + match[0].length);
	241	}
	242	if (text) {
	243	text_span.appendChild(document.createTextNode(text));
	244	}
	245
3a89c414	246	message.UI.appendChild(text_span);
bf8f6a39 SW	247	}
bf8f6a39 SW	248
0248a518	249	function rcaddmessagetohistory(message) {
7f54ca0a SW	250	var message_i;
	251	if (message.Time) {
	252	for (var i = history.length - 1; ; i--) {
	253	if (i < 0 \|\| (history[i].Time && message.Time >= history[i].Time)) {
	254	message_i = i+1;
	255	history.splice(message_i, 0, message);
	256	break;
	257	}
	258	}
	259	} else {
	260	history.push(message);
	261	message_i = history.length-1;
	262	}
	263
95ba71ee	264	if (!message.UI) {
bf8f6a39	265	rcmakemessageUI(message);
95ba71ee	266	}
0248a518	267	var h = document.getElementById("history");
7f54ca0a SW	268	if (message_i + 1 < history.length) {
	269	h.insertBefore(message.UI, history[message_i + 1].UI);
	270	} else {
	271	h.appendChild(message.UI);
	272	}
0248a518	273	window.scrollTo(0, document.body.scrollHeight);
0248a518 SW	274	}
	275
	276	function make_seen_key(id, text) {
	277	return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@");
	278	}
	279
40380bd3 SW	280	function rcupdatemessagetime(message) {
	281	// Set message.Time to be the median of message.ServerTimes
	282	var times = [];
	283	for (var i in message.ServerTimes) {
	284	times.push(message.ServerTimes[i]);
	285	}
	286	times.sort();
40380bd3	287	if (times.length % 2) {
ac4bf273	288	message.Time = times[(times.length-1)/2];
40380bd3	289	} else {
ac4bf273	290	var middle = times.length/2;
40380bd3 SW	291	var difference = times[middle].getTime() - times[middle-1].getTime();
	292	message.Time = new Date(times[middle-1].getTime() + difference/2);
	293	}
95ba71ee SW	294
	295	// This may have broken history's in-sorted-order invariant
	296	var hi = history.indexOf(message);
	297	if ((history[hi-1] && history[hi-1].Time > message.Time) \|\|
	298	(history[hi+1] && history[hi+1].Time < message.Time)) {
	299	history.splice(hi,1);
	300	rcaddmessagetohistory(message);
	301	}
5be4c8ec SW	302
	303	// Update the UI
	304	var spans = message.UI.getElementsByTagName("span");
	305	for (var i in spans) {
c0aac85a SW	306	if (spans[i].getAttribute) {
	307	var type = spans[i].getAttribute("class");
	308	if (type == "servercount") {
	309	spans[i].firstChild.data = Object.keys(message.ServerTimes).length;
	310	} else if (type == "timestamp") {
	311	spans[i].firstChild.data = rcformattime(message.Time);
	312	}
5be4c8ec SW	313	}
5be4c8ec SW	314	}
40380bd3 SW	315	}
40380bd3 SW	316
79ced6f1 SW	317	function rcreceivemessages(server, messages) {
79ced6f1 SW	318	for (var i in messages) {
ad35b1be	319	var m = messages[i];
bd1ed9dd	320	m.Time = new Date(m.Time);
ad35b1be	321	var seen_key = make_seen_key(m.ID, m.Text);
705e26cf SW	322	if (seen_key in seen) {
705e26cf SW	323	seen[seen_key].ServerTimes[server] = m.Time;
40380bd3	324	rcupdatemessagetime(seen[seen_key]);
244a78af	325	rcaddservertimestamptohover(seen[seen_key], server);
705e26cf	326	} else {
16640c5d SW	327	m.ServerTimes = {};
16640c5d SW	328	m.ServerTimes[server] = m.Time;
869430fa	329	seen[seen_key] = m;
ad35b1be	330	rcaddmessagetohistory(m);
79ced6f1 SW	331	for (var i in servers) {
	332	rcchangeserverstatus(servers[i], "sad");
	333	}
0248a518	334	}
79ced6f1	335	rcchangeserverstatus(server, "happy");
0248a518	336	}
0248a518 SW	337	}
0248a518 SW	338
79ced6f1 SW	339	function rcfetch(server) {
	340	var delay = 10000; // TODO: Exponential backoff
	341	var xhr = new XMLHttpRequest();
	342	xhr.onreadystatechange = function() {
	343	if (this.readyState == this.DONE) {
	344	if (this.status == 200) {
	345	var rtxt = this.responseText;
	346	if (rtxt != null) {
	347	var messages = JSON.parse(rtxt);
	348	if (messages != null) {
79ced6f1 SW	349	delay = 40;
79ced6f1 SW	350	if (messages.length >= 1 && "Time" in messages[messages.length-1]) {
ad35b1be	351	since[server] = messages[messages.length-1].Time;
79ced6f1	352	}
92ca5f8a	353	rcreceivemessages(server, messages);
79ced6f1	354	}
0248a518 SW	355	}
0248a518 SW	356	}
79ced6f1	357	window.setTimeout(rcfetch, delay, server);
0248a518 SW	358	}
0248a518 SW	359	}
79ced6f1 SW	360	var uri = rcserverbase(server) + "/fetch";
	361	if (server in since) {
	362	uri += '?since="' + since[server] + '"';
	363	}
	364	xhr.open("GET", uri);
	365	xhr.send();
0248a518 SW	366	}
	367
	368	function rcconnect() {
0248a518	369	for (var i in servers) {
79ced6f1	370	rcfetch(servers[i]);
0248a518 SW	371	// Status bar entry
	372	var status_indicator = document.createElement("span");
	373	status_indicator.appendChild(document.createTextNode(servers[i]));
	374	status_indicator.setAttribute("class", "sad");
	375	document.getElementById("status").appendChild(status_indicator);
	376	}
0248a518 SW	377	}
	378
	379	function rcsend(d, message) {
7f54ca0a SW	380	message.ID = new Date().getTime() + "-" + session + "-" + Math.random();
7f54ca0a SW	381	seen[make_seen_key(message.ID, message.Text)] = message;
0248a518	382	var path = "/speak" +
7f54ca0a SW	383	"?id=" + encodeURIComponent(message.ID) +
7f54ca0a SW	384	"&text=" + encodeURIComponent(message.Text);
0248a518 SW	385	for (var i in servers) {
	386	var uri = rcserverbase(servers[i]) + path;
	387	var img = document.createElement("img");
	388	img.setAttribute("src", uri);
	389	d.appendChild(img);
	390	}
	391	}
	392
5a6c082a SW	393	function rcinput(input) {
	394	var message;
	395	var re = /^\/([a-z]+) (.*)/
	396	var match = re.exec(input);
	397	if (match && match[1] == 'me') {
	398	message = "* " + rcnick() + " " + match[2];
	399	} else if (match && match[1] == 'nick') {
	400	message = "*** " + rcnick() + " is now known as " + match[2];
	401	rcsetnick(match[2]);
	402	} else {
	403	message = "<" + rcnick() + "> " + input;
	404	}
	405
7f54ca0a	406	var m = {'Text': message, 'ServerTimes': {}};
869430fa SW	407	rcaddmessagetohistory(m);
869430fa SW	408	rcsend(m.UI, m);
5a6c082a SW	409	}
5a6c082a SW	410
0248a518 SW	411	function rckeydown(event) {
0248a518 SW	412	if (event.keyCode == 13) {
5a6c082a	413	rcinput(document.input.say.value);
0248a518 SW	414	document.input.say.value = "";
0248a518 SW	415
0248a518 SW	416	}
	417	}
	418	//--><!]]></script>
	419
827f21bb SW	420	</head>
827f21bb SW	421
f0e385c7	422	<body onload="rcconnect()">
70f46223	423	<div id="container">
5afebfc6	424	<div class="banner">(You are using <a href="https://github.com/chkno/reliable-chat">Reliable Chat</a>)</div>
70f46223 JH	425	<div id="history"></div>
	426	<div id="client">
	427	<div id="input">
	428	<form name="input" onsubmit="return false" autocomplete="off">
	429	<input id="say" onkeydown="return rckeydown(event)" autocomplete="off" autofocus="autofocus"></input>
	430	</form></div>
	431	<div id="status"> </div>
	432	</div>
	433	</div>
827f21bb SW	434	</body>
827f21bb SW	435	</html>