[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: 100%;
		height: 100%;
		margin: 0;
		padding: 0;
		background-color: #293134;
		color: silver;
		font-family: monospace;
	}
	a {
		color: #ddd;
	}
	#container {
		height: 100%;
	}
	#status {
		width: 100%;
		text-align: right;
		background-color: #293134;
		padding: 5px 5px 5px 0px;
	}
	#client {
		width: 100%;
		position: fixed;
		bottom: 0;
	}
	#input {
		width: 100%;
		background-color: #293134;
	}
	#say { width: 100% }
	#history {
		padding: 0px 5px 30px 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;
	}

	/* BEGIN expando input box trick kindly provided by http://www.alistapart.com/articles/expanding-text-areas-made-elegant/ */
	.expandingArea {
		position: relative;
		border: 1px solid #888;
		background: silver;
	}
	.expandingArea > textarea,
	.expandingArea > pre {
		margin: 0;
		outline: 0;
		border: 0;
		padding: 5px;
		background: transparent;
		font: 400 13px/16px helvetica, arial, sans-serif;
		/* Make the text soft-wrap */
		white-space: pre-wrap;
		word-wrap: break-word;
	}
	.expandingArea > textarea {
		/* The border-box box model is used to allow
		 * padding whilst still keeping the overall width
		 * at exactly that of the containing element.
		 */
		-webkit-box-sizing: border-box;
		   -moz-box-sizing: border-box;
		    -ms-box-sizing: border-box;
			box-sizing: border-box;
		width: 100%;
		/* Hide any scrollbars */
		overflow: hidden;
		position: absolute;
		top: 0;
		left: 0;
		height: 100%;
		/* Remove WebKit user-resize widget */
		resize: none;
	}
	.expandingArea > pre {
		display: block;
		/* Hide the text; just using it for sizing */
		visibility: hidden;
	}
	/* END expando input box trick kindly provided by http://www.alistapart.com/articles/expanding-text-areas-made-elegant/ */

  /*]]>*/--></style>
  <script type="text/javascript"><!--//--><![CDATA[//><!--
	var servers = ['chkno.net', 'rc2.chkno.net', 'reliablechat-chk.rhcloud.com:80', 'intense-basin-3395.herokuapp.com:80', '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 if (/^-!- /.test(message.Text)) {
			type = "local";
		} 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_i + 1 < history.length) {
			rcaddmessagetoUI(message, history[message_i + 1].UI);
		} else {
			rcaddmessagetoUI(message, null);
		}
	}

	function rcaddmessagetoUI(message, before) {
		if (!message.UI) {
			rcmakemessageUI(message);
		}
		var h = document.getElementById("history");
		if (before) {
			h.insertBefore(message.UI, before);
		} 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() {
		makeExpandingArea(document.getElementById("expando"));
		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 xhr = new XMLHttpRequest();
			xhr.open("POST", rcserverbase(servers[i]) + path);
			xhr.send();
		}
	}

	function rcinput(input) {
		var message;
		var re = /^\/(\S+)(\s(.*))?/;
		var match = re.exec(input);
		if (match) {
			var command = match[1];
			var rest = match[3];
			if (command == 'me') {
				message = "* " + rcnick() + "  " + rest;
			} else if (command == 'nick') {
				if (rcnick() == rest) {
					rcaddmessagetoUI({'Text': '-!- Your nick is already ' + rcnick(), 'ServerTimes': {}});
					return;
				}
				message = "*** " + rcnick() + " is now known as " + rest;
				rcsetnick(rest);
			} else {
				rcaddmessagetoUI({'Text': '-!- No such command: ' + command, 'ServerTimes': {}});
				return;
			}
		} else {
			message = "<" + rcnick() + "> " + input;
		}

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

	function rckeydown(event) {
		if (event.keyCode == 13) {
			if (document.input.say.value) {
				rcinput(document.input.say.value);
			}
			document.input.say.value = "";
			return false;
		}
	}

	// From http://www.alistapart.com/articles/expanding-text-areas-made-elegant/
	function makeExpandingArea(container) {
		var area = container.querySelector('textarea');
		var span1 = container.querySelector('span');
		var span2 = document.getElementById('historypad');
		if (area.addEventListener) {
			area.addEventListener('input', function() {
				span1.textContent = area.value;
				span2.textContent = area.value;
			}, false);
			span1.textContent = area.value;
			span2.textContent = area.value;
		} else if (area.attachEvent) {
			// IE8 compatibility
			area.attachEvent('onpropertychange', function() {
				span1.innerText = area.value;
				span2.innerText = area.value;
			});
			span1.innerText = area.value;
			span2.innerText = area.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 class="expandingArea" style="visibility: hidden">
			<pre><span id="historypad"></span><br></pre>
		</div>
		<div id="client">
			<div id="input">
				<form name="input" onsubmit="return false" autocomplete="off">
					<div id="expando" class="expandingArea">
						<pre><span></span><br></pre>
						<textarea id="say" onkeydown="return rckeydown(event)" autofocus="autofocus"></textarea>
					</div>
				</form></div>
			<div id="status"></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	25	html, body {
19724ebd	26	width: 100%;
70f46223 JH	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	34	a {
63b1551b	35	color: #ddd;
e04a2cfd	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 {
19724ebd	47	width: 100%;
70f46223 JH	48	position: fixed;
	49	bottom: 0;
	50	}
	51	#input {
	52	width: 100%;
b22a2ced	53	background-color: #293134;
70f46223	54	}
0248a518	55	#say { width: 100% }
70f46223	56	#history {
19724ebd SW	57	padding: 0px 5px 30px 5px;
19724ebd SW	58	vertical-align: bottom;
70f46223	59	}
5afebfc6 SW	60	.banner {
	61	font-size: 85%;
	62	text-align: right;
	63	}
c0aac85a	64	.servercount {
33fdb071	65	margin-right: -0.5em;
c0aac85a SW	66	font-size: 70%;
c0aac85a SW	67	}
244a78af SW	68	.timestamp:hover, .timestamp:hover .servertimestamps {
	69	background-color: #556;
	70	}
	71	.timestamp:hover .servertimestamps {
	72	display: block;
	73	}
	74	.servertimestamps {
	75	display: none;
	76	position: absolute;
	77	left: 3em;
	78	z-index: 1;
	79	border: 1px solid black;
	80	border-radius: 5px;
	81	padding-left: 5px;
	82	padding-right: 5px;
	83	}
0248a518 SW	84	img { width: 1px; height: 1px; }
0248a518 SW	85	iframe { display: none }
70f46223	86	#status span { margin-right: 10px; }
f09c4ede JH	87	#status span.sad {
	88	background-color: #f00;
	89	color: #fff;
	90	border: 1px solid black;
	91	border-radius: 5px;
	92	padding-left: 5px;
	93	padding-right: 5px;
	94	}
	95	#status span.happy {
	96	background-color: #0f0;
	97	color: #000;
	98	border: 1px solid black;
	99	border-radius: 5px;
	100	padding-left: 5px;
	101	padding-right: 5px;
	102	}
19724ebd SW	103
	104	/* BEGIN expando input box trick kindly provided by http://www.alistapart.com/articles/expanding-text-areas-made-elegant/ */
	105	.expandingArea {
	106	position: relative;
	107	border: 1px solid #888;
63b1551b	108	background: silver;
19724ebd SW	109	}
	110	.expandingArea > textarea,
	111	.expandingArea > pre {
	112	margin: 0;
	113	outline: 0;
	114	border: 0;
	115	padding: 5px;
	116	background: transparent;
	117	font: 400 13px/16px helvetica, arial, sans-serif;
	118	/* Make the text soft-wrap */
	119	white-space: pre-wrap;
	120	word-wrap: break-word;
	121	}
	122	.expandingArea > textarea {
	123	/* The border-box box model is used to allow
	124	* padding whilst still keeping the overall width
	125	* at exactly that of the containing element.
	126	*/
	127	-webkit-box-sizing: border-box;
	128	-moz-box-sizing: border-box;
	129	-ms-box-sizing: border-box;
	130	box-sizing: border-box;
	131	width: 100%;
	132	/* Hide any scrollbars */
	133	overflow: hidden;
	134	position: absolute;
	135	top: 0;
	136	left: 0;
	137	height: 100%;
	138	/* Remove WebKit user-resize widget */
	139	resize: none;
	140	}
	141	.expandingArea > pre {
	142	display: block;
	143	/* Hide the text; just using it for sizing */
	144	visibility: hidden;
	145	}
	146	/* END expando input box trick kindly provided by http://www.alistapart.com/articles/expanding-text-areas-made-elegant/ */
	147
0248a518 SW	148	/]]>/--></style>
0248a518 SW	149	<script type="text/javascript"><!--//--><![CDATA[//><!--
b669fb70	150	var servers = ['chkno.net', 'rc2.chkno.net', 'reliablechat-chk.rhcloud.com:80', 'intense-basin-3395.herokuapp.com:80', 'echto.net', 'the-wes.com', 'vibrantlogic.com'];
0248a518	151
da9ce2ab	152	var session = Math.random(); // For outgoing message IDs
869430fa SW	153	var since = {}; // server -> time: For fetch?since=
869430fa SW	154	var seen = {}; // seen_key -> message
7f54ca0a	155	var history = []; // List of messages sorted by Time
5419ea4c	156	// Messages have these fields:
40380bd3	157	// Time: The timestamp. Median of ServerTimes
5419ea4c SW	158	// ID: Some unique string for deduping
5419ea4c SW	159	// Text: The text of the message
705e26cf	160	// ServerTimes: server -> timestamp
5419ea4c	161	// UI: The DOM node for this message in the UI
0248a518 SW	162
	163	function rcnick() {
	164	var nick = localStorage.getItem("nick");
	165	if (nick) {
	166	return nick;
	167	}
	168	return 'anonymous';
	169	}
	170
	171	function rcsetnick(new_nick) {
	172	localStorage.setItem("nick", new_nick);
	173	}
	174
	175	function rcserverbase(server) {
	176	// Add the default port if server doesn't contain a port number already
	177	if (server.indexOf(":") == -1) {
	178	return "http://" + server + ":21059";
	179	} else {
	180	return "http://" + server;
	181	}
	182	}
	183
	184	function rcchangeserverstatus(server, new_status) {
	185	var statusbar = document.getElementById("status");
	186	var spans = statusbar.getElementsByTagName("span");
	187	for (var i in spans) {
	188	if (spans[i].firstChild && 'data' in spans[i].firstChild && spans[i].firstChild.data == server) {
	189	spans[i].setAttribute("class", new_status);
	190	}
	191	}
	192	}
	193
66b29e97 SW	194	function rcpad2(x) {
	195	return (x < 10 ? "0" : "") + x;
	196	}
	197	function rcpad3(x) {
	198	return (x < 10 ? "00" : (x < 100 ? "0" : "")) + x;
	199	}
	200
bd1ed9dd SW	201	function rcformattime(t) {
	202	var d = t.getDay();
	203	d = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"][d];
	204	var h = t.getHours();
	205	var m = t.getMinutes();
	206	var s = t.getSeconds();
66b29e97	207	return d + " " + rcpad2(h) + ":" + rcpad2(m) + ":" + rcpad2(s);
bd1ed9dd SW	208	}
bd1ed9dd SW	209
244a78af SW	210	function rcaddservertimestamptohover(message, server) {
244a78af SW	211	var divs = message.UI.getElementsByTagName("div");
66b29e97	212	var t = message.ServerTimes[server];
244a78af SW	213	for (var i in divs) {
	214	if (divs[i].getAttribute && divs[i].getAttribute("class") == "servertimestamps") {
	215	var d = document.createElement("div");
66b29e97 SW	216	var text = t.getFullYear() + "-" +
	217	rcpad2(t.getMonth()) + "-" +
	218	rcpad2(t.getDay()) + " " +
	219	rcformattime(t) + "." +
	220	rcpad3(t.getMilliseconds()) + " " +
	221	server;
244a78af SW	222	d.appendChild(document.createTextNode(text));
	223	divs[i].appendChild(d);
	224	}
	225	}
	226	}
	227
bf8f6a39 SW	228	function rcmakemessageUI(message) {
	229	message.UI = document.createElement("div");
	230
	231	// Server count
	232	var servercount = document.createElement("span");
	233	servercount.setAttribute("class", "servercount");
	234	servercount.appendChild(document.createTextNode(Object.keys(message.ServerTimes).length));
	235	message.UI.appendChild(servercount);
33fdb071	236	message.UI.appendChild(document.createTextNode(" "));
bf8f6a39 SW	237
	238	// Timestamp
	239	var timestamp_text = message.Time ? rcformattime(message.Time) : "";
	240	var timestamp = document.createElement("span");
	241	timestamp.setAttribute("class", "timestamp");
	242	timestamp.appendChild(document.createTextNode(timestamp_text));
	243	message.UI.appendChild(timestamp);
33fdb071	244	message.UI.appendChild(document.createTextNode(" "));
bf8f6a39	245
244a78af SW	246	// Timestamp hover
	247	var timestamp_hover = document.createElement("div");
	248	timestamp_hover.setAttribute("class", "servertimestamps");
	249	timestamp.appendChild(timestamp_hover);
	250	for (var server in message.ServerTimes) {
	251	rcaddservertimestamptohover(message, server);
	252	}
	253
3a89c414 SW	254	// Classify different message types
	255	var text_span = document.createElement("span");
	256	var type;
	257	if (/^\\\* /.test(message.Text)) {
	258	type = "status";
	259	} else if (/^\* /.test(message.Text)) {
	260	type = "me";
c301e690 SW	261	} else if (/^-!- /.test(message.Text)) {
c301e690 SW	262	type = "local";
3a89c414 SW	263	} else {
	264	type = "text";
	265	}
	266	if (Object.keys(message.ServerTimes).length == 0) {
	267	type += " self";
	268	}
	269	text_span.setAttribute("class", type);
e04a2cfd SW	270
	271	// URL detection
	272	var text = message.Text;
	273	var URL_re = /\bhttps?:\/\/\S+/;
	274	while (URL_re.test(text)) {
	275	var match = URL_re.exec(text);
	276	var leading_text = text.substr(0, match.index);
	277	if (leading_text) {
	278	text_span.appendChild(document.createTextNode(leading_text));
	279	}
	280	var anchor = document.createElement("a");
606c01e1	281	anchor.setAttribute("rel", "nofollow");
e04a2cfd SW	282	anchor.setAttribute("href", encodeURI(match[0]));
	283	anchor.appendChild(document.createTextNode(match[0]));
	284	text_span.appendChild(anchor);
	285	text = text.substr(match.index + match[0].length);
	286	}
	287	if (text) {
	288	text_span.appendChild(document.createTextNode(text));
	289	}
	290
3a89c414	291	message.UI.appendChild(text_span);
bf8f6a39 SW	292	}
bf8f6a39 SW	293
0248a518	294	function rcaddmessagetohistory(message) {
7f54ca0a SW	295	var message_i;
	296	if (message.Time) {
	297	for (var i = history.length - 1; ; i--) {
	298	if (i < 0 \|\| (history[i].Time && message.Time >= history[i].Time)) {
	299	message_i = i+1;
	300	history.splice(message_i, 0, message);
	301	break;
	302	}
	303	}
	304	} else {
	305	history.push(message);
	306	message_i = history.length-1;
	307	}
16f7340b SW	308	if (message_i + 1 < history.length) {
	309	rcaddmessagetoUI(message, history[message_i + 1].UI);
	310	} else {
	311	rcaddmessagetoUI(message, null);
	312	}
	313	}
7f54ca0a	314
16f7340b	315	function rcaddmessagetoUI(message, before) {
95ba71ee	316	if (!message.UI) {
bf8f6a39	317	rcmakemessageUI(message);
95ba71ee	318	}
0248a518	319	var h = document.getElementById("history");
16f7340b SW	320	if (before) {
16f7340b SW	321	h.insertBefore(message.UI, before);
7f54ca0a SW	322	} else {
	323	h.appendChild(message.UI);
	324	}
0248a518	325	window.scrollTo(0, document.body.scrollHeight);
0248a518 SW	326	}
	327
	328	function make_seen_key(id, text) {
	329	return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@");
	330	}
	331
40380bd3 SW	332	function rcupdatemessagetime(message) {
	333	// Set message.Time to be the median of message.ServerTimes
	334	var times = [];
	335	for (var i in message.ServerTimes) {
	336	times.push(message.ServerTimes[i]);
	337	}
	338	times.sort();
40380bd3	339	if (times.length % 2) {
ac4bf273	340	message.Time = times[(times.length-1)/2];
40380bd3	341	} else {
ac4bf273	342	var middle = times.length/2;
40380bd3 SW	343	var difference = times[middle].getTime() - times[middle-1].getTime();
	344	message.Time = new Date(times[middle-1].getTime() + difference/2);
	345	}
95ba71ee SW	346
	347	// This may have broken history's in-sorted-order invariant
	348	var hi = history.indexOf(message);
	349	if ((history[hi-1] && history[hi-1].Time > message.Time) \|\|
	350	(history[hi+1] && history[hi+1].Time < message.Time)) {
	351	history.splice(hi,1);
	352	rcaddmessagetohistory(message);
	353	}
5be4c8ec SW	354
	355	// Update the UI
	356	var spans = message.UI.getElementsByTagName("span");
	357	for (var i in spans) {
c0aac85a SW	358	if (spans[i].getAttribute) {
	359	var type = spans[i].getAttribute("class");
	360	if (type == "servercount") {
	361	spans[i].firstChild.data = Object.keys(message.ServerTimes).length;
	362	} else if (type == "timestamp") {
	363	spans[i].firstChild.data = rcformattime(message.Time);
	364	}
5be4c8ec SW	365	}
5be4c8ec SW	366	}
40380bd3 SW	367	}
40380bd3 SW	368
79ced6f1 SW	369	function rcreceivemessages(server, messages) {
79ced6f1 SW	370	for (var i in messages) {
ad35b1be	371	var m = messages[i];
bd1ed9dd	372	m.Time = new Date(m.Time);
ad35b1be	373	var seen_key = make_seen_key(m.ID, m.Text);
705e26cf SW	374	if (seen_key in seen) {
705e26cf SW	375	seen[seen_key].ServerTimes[server] = m.Time;
40380bd3	376	rcupdatemessagetime(seen[seen_key]);
244a78af	377	rcaddservertimestamptohover(seen[seen_key], server);
705e26cf	378	} else {
16640c5d SW	379	m.ServerTimes = {};
16640c5d SW	380	m.ServerTimes[server] = m.Time;
869430fa	381	seen[seen_key] = m;
ad35b1be	382	rcaddmessagetohistory(m);
79ced6f1 SW	383	for (var i in servers) {
	384	rcchangeserverstatus(servers[i], "sad");
	385	}
0248a518	386	}
79ced6f1	387	rcchangeserverstatus(server, "happy");
0248a518	388	}
0248a518 SW	389	}
0248a518 SW	390
79ced6f1 SW	391	function rcfetch(server) {
	392	var delay = 10000; // TODO: Exponential backoff
	393	var xhr = new XMLHttpRequest();
	394	xhr.onreadystatechange = function() {
	395	if (this.readyState == this.DONE) {
	396	if (this.status == 200) {
	397	var rtxt = this.responseText;
	398	if (rtxt != null) {
	399	var messages = JSON.parse(rtxt);
	400	if (messages != null) {
79ced6f1 SW	401	delay = 40;
79ced6f1 SW	402	if (messages.length >= 1 && "Time" in messages[messages.length-1]) {
ad35b1be	403	since[server] = messages[messages.length-1].Time;
79ced6f1	404	}
92ca5f8a	405	rcreceivemessages(server, messages);
79ced6f1	406	}
0248a518 SW	407	}
0248a518 SW	408	}
79ced6f1	409	window.setTimeout(rcfetch, delay, server);
0248a518 SW	410	}
0248a518 SW	411	}
79ced6f1 SW	412	var uri = rcserverbase(server) + "/fetch";
	413	if (server in since) {
	414	uri += '?since="' + since[server] + '"';
	415	}
	416	xhr.open("GET", uri);
	417	xhr.send();
0248a518 SW	418	}
	419
	420	function rcconnect() {
19724ebd	421	makeExpandingArea(document.getElementById("expando"));
0248a518	422	for (var i in servers) {
79ced6f1	423	rcfetch(servers[i]);
0248a518 SW	424	// Status bar entry
	425	var status_indicator = document.createElement("span");
	426	status_indicator.appendChild(document.createTextNode(servers[i]));
	427	status_indicator.setAttribute("class", "sad");
	428	document.getElementById("status").appendChild(status_indicator);
	429	}
0248a518 SW	430	}
	431
	432	function rcsend(d, message) {
7f54ca0a SW	433	message.ID = new Date().getTime() + "-" + session + "-" + Math.random();
7f54ca0a SW	434	seen[make_seen_key(message.ID, message.Text)] = message;
0248a518	435	var path = "/speak" +
7f54ca0a SW	436	"?id=" + encodeURIComponent(message.ID) +
7f54ca0a SW	437	"&text=" + encodeURIComponent(message.Text);
0248a518	438	for (var i in servers) {
9878d03b SW	439	var xhr = new XMLHttpRequest();
	440	xhr.open("POST", rcserverbase(servers[i]) + path);
	441	xhr.send();
0248a518 SW	442	}
	443	}
	444
5a6c082a SW	445	function rcinput(input) {
5a6c082a SW	446	var message;
219b6a2b	447	var re = /^\/(\S+)(\s(.*))?/;
5a6c082a	448	var match = re.exec(input);
16f7340b	449	if (match) {
112df9d1 SW	450	var command = match[1];
	451	var rest = match[3];
	452	if (command == 'me') {
	453	message = "* " + rcnick() + " " + rest;
	454	} else if (command == 'nick') {
219b6a2b SW	455	if (rcnick() == rest) {
	456	rcaddmessagetoUI({'Text': '-!- Your nick is already ' + rcnick(), 'ServerTimes': {}});
	457	return;
	458	}
112df9d1 SW	459	message = "*** " + rcnick() + " is now known as " + rest;
112df9d1 SW	460	rcsetnick(rest);
16f7340b	461	} else {
112df9d1	462	rcaddmessagetoUI({'Text': '-!- No such command: ' + command, 'ServerTimes': {}});
16f7340b SW	463	return;
16f7340b SW	464	}
5a6c082a SW	465	} else {
	466	message = "<" + rcnick() + "> " + input;
	467	}
	468
7f54ca0a	469	var m = {'Text': message, 'ServerTimes': {}};
869430fa SW	470	rcaddmessagetohistory(m);
869430fa SW	471	rcsend(m.UI, m);
5a6c082a SW	472	}
5a6c082a SW	473
0248a518 SW	474	function rckeydown(event) {
0248a518 SW	475	if (event.keyCode == 13) {
cf44a976 SW	476	if (document.input.say.value) {
	477	rcinput(document.input.say.value);
	478	}
0248a518	479	document.input.say.value = "";
19724ebd SW	480	return false;
	481	}
	482	}
	483
	484	// From http://www.alistapart.com/articles/expanding-text-areas-made-elegant/
	485	function makeExpandingArea(container) {
	486	var area = container.querySelector('textarea');
	487	var span1 = container.querySelector('span');
	488	var span2 = document.getElementById('historypad');
	489	if (area.addEventListener) {
	490	area.addEventListener('input', function() {
	491	span1.textContent = area.value;
	492	span2.textContent = area.value;
	493	}, false);
	494	span1.textContent = area.value;
	495	span2.textContent = area.value;
	496	} else if (area.attachEvent) {
	497	// IE8 compatibility
	498	area.attachEvent('onpropertychange', function() {
	499	span1.innerText = area.value;
	500	span2.innerText = area.value;
	501	});
	502	span1.innerText = area.value;
	503	span2.innerText = area.value;
0248a518 SW	504	}
	505	}
	506	//--><!]]></script>
	507
827f21bb SW	508	</head>
827f21bb SW	509
f0e385c7	510	<body onload="rcconnect()">
70f46223	511	<div id="container">
5afebfc6	512	<div class="banner">(You are using <a href="https://github.com/chkno/reliable-chat">Reliable Chat</a>)</div>
70f46223	513	<div id="history"></div>
19724ebd SW	514	<div class="expandingArea" style="visibility: hidden">
	515	<pre><span id="historypad"></span><br></pre>
	516	</div>
70f46223 JH	517	<div id="client">
	518	<div id="input">
	519	<form name="input" onsubmit="return false" autocomplete="off">
19724ebd SW	520	<div id="expando" class="expandingArea">
	521	<pre><span></span><br></pre>
	522	<textarea id="say" onkeydown="return rckeydown(event)" autofocus="autofocus"></textarea>
	523	</div>
70f46223	524	</form></div>
19724ebd	525	<div id="status"></div>
70f46223 JH	526	</div>
70f46223 JH	527	</div>
827f21bb SW	528	</body>
827f21bb SW	529	</html>