[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;
		display: none;
	}
	#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;
	}
	.status {
		color: #dd8;
	}
	.local.self {
		color: #d8d;
	}
	.self {
		color: #8d8;
	}
	.me {
		color: #bbd;
	}
	.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;
	}
	#getnick {
		padding-left: 3em;
		display: none;
	}

	/* 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 hist = [];  // 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() {
		return localStorage.getItem("nick");
	}

	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 = hist.length - 1; ; i--) {
				if (i < 0 || (hist[i].Time && message.Time >= hist[i].Time)) {
					message_i = i+1;
					hist.splice(message_i, 0, message);
					break;
				}
			}
		} else {
			hist.push(message);
			message_i = hist.length-1;
		}
		if (message_i + 1 < hist.length) {
			rcaddmessagetoUI(message, hist[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 hist's in-sorted-order invariant
		var hi = hist.indexOf(message);
		if ((hist[hi-1] && hist[hi-1].Time > message.Time) ||
		    (hist[hi+1] && hist[hi+1].Time < message.Time)) {
			hist.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 rcstart() {
		if (rcnick()) {
			document.getElementById("client").style.display = 'block';
			rcconnect();
		} else {
			document.getElementById("getnick").style.display = 'block';
		}
	}

	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;
				}
				if (rest) {
					message = "*** " + rcnick() + " is now known as " + rest;
					rcsetnick(rest);
				} else {
					rcaddmessagetoUI({'Text': '-!- /nick requires an argument', 'ServerTimes': {}});
					return;
				}
			} 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;
		}
	}

	function rcsetinitialnick() {
		if (document.getnickform.initial_nick.value) {
			rcsetnick(document.getnickform.initial_nick.value);
			document.getElementById("getnick").style.display = 'none';
			document.getElementById("client").style.display = 'block';
			rcconnect();
		}
		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="rcstart()">
	<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="getnick">
			<h1>Set your nick</h1>
			<form name="getnickform" onsubmit="return rcsetinitialnick();">
				<input id="initial_nick" type="text"></input>
				<input type="submit" value="ok"></input>
			</form>
		</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;
70f46223 JH	49	bottom: 0;
72f02cfd	50	display: none;
70f46223 JH	51	}
	52	#input {
	53	width: 100%;
b22a2ced	54	background-color: #293134;
70f46223	55	}
0248a518	56	#say { width: 100% }
70f46223	57	#history {
19724ebd SW	58	padding: 0px 5px 30px 5px;
19724ebd SW	59	vertical-align: bottom;
70f46223	60	}
5afebfc6 SW	61	.banner {
	62	font-size: 85%;
	63	text-align: right;
	64	}
7310ffee SW	65	.status {
	66	color: #dd8;
	67	}
	68	.local.self {
	69	color: #d8d;
	70	}
	71	.self {
	72	color: #8d8;
	73	}
	74	.me {
	75	color: #bbd;
	76	}
c0aac85a	77	.servercount {
33fdb071	78	margin-right: -0.5em;
c0aac85a SW	79	font-size: 70%;
c0aac85a SW	80	}
244a78af SW	81	.timestamp:hover, .timestamp:hover .servertimestamps {
	82	background-color: #556;
	83	}
	84	.timestamp:hover .servertimestamps {
	85	display: block;
	86	}
	87	.servertimestamps {
	88	display: none;
	89	position: absolute;
	90	left: 3em;
	91	z-index: 1;
	92	border: 1px solid black;
	93	border-radius: 5px;
	94	padding-left: 5px;
	95	padding-right: 5px;
	96	}
0248a518 SW	97	img { width: 1px; height: 1px; }
0248a518 SW	98	iframe { display: none }
70f46223	99	#status span { margin-right: 10px; }
f09c4ede JH	100	#status span.sad {
	101	background-color: #f00;
	102	color: #fff;
	103	border: 1px solid black;
	104	border-radius: 5px;
	105	padding-left: 5px;
	106	padding-right: 5px;
	107	}
	108	#status span.happy {
	109	background-color: #0f0;
	110	color: #000;
	111	border: 1px solid black;
	112	border-radius: 5px;
	113	padding-left: 5px;
	114	padding-right: 5px;
	115	}
72f02cfd SW	116	#getnick {
	117	padding-left: 3em;
	118	display: none;
	119	}
19724ebd SW	120
	121	/* BEGIN expando input box trick kindly provided by http://www.alistapart.com/articles/expanding-text-areas-made-elegant/ */
	122	.expandingArea {
	123	position: relative;
	124	border: 1px solid #888;
63b1551b	125	background: silver;
19724ebd SW	126	}
	127	.expandingArea > textarea,
	128	.expandingArea > pre {
	129	margin: 0;
	130	outline: 0;
	131	border: 0;
	132	padding: 5px;
	133	background: transparent;
	134	font: 400 13px/16px helvetica, arial, sans-serif;
	135	/* Make the text soft-wrap */
	136	white-space: pre-wrap;
	137	word-wrap: break-word;
	138	}
	139	.expandingArea > textarea {
	140	/* The border-box box model is used to allow
	141	* padding whilst still keeping the overall width
	142	* at exactly that of the containing element.
	143	*/
	144	-webkit-box-sizing: border-box;
	145	-moz-box-sizing: border-box;
	146	-ms-box-sizing: border-box;
	147	box-sizing: border-box;
	148	width: 100%;
	149	/* Hide any scrollbars */
	150	overflow: hidden;
	151	position: absolute;
	152	top: 0;
	153	left: 0;
	154	height: 100%;
	155	/* Remove WebKit user-resize widget */
	156	resize: none;
	157	}
	158	.expandingArea > pre {
	159	display: block;
	160	/* Hide the text; just using it for sizing */
	161	visibility: hidden;
	162	}
	163	/* END expando input box trick kindly provided by http://www.alistapart.com/articles/expanding-text-areas-made-elegant/ */
	164
0248a518 SW	165	/]]>/--></style>
0248a518 SW	166	<script type="text/javascript"><!--//--><![CDATA[//><!--
b669fb70	167	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	168
da9ce2ab	169	var session = Math.random(); // For outgoing message IDs
869430fa SW	170	var since = {}; // server -> time: For fetch?since=
869430fa SW	171	var seen = {}; // seen_key -> message
f9e5ee82	172	var hist = []; // List of messages sorted by Time
5419ea4c	173	// Messages have these fields:
40380bd3	174	// Time: The timestamp. Median of ServerTimes
5419ea4c SW	175	// ID: Some unique string for deduping
5419ea4c SW	176	// Text: The text of the message
705e26cf	177	// ServerTimes: server -> timestamp
5419ea4c	178	// UI: The DOM node for this message in the UI
0248a518 SW	179
0248a518 SW	180	function rcnick() {
72f02cfd	181	return localStorage.getItem("nick");
0248a518 SW	182	}
	183
	184	function rcsetnick(new_nick) {
	185	localStorage.setItem("nick", new_nick);
	186	}
	187
	188	function rcserverbase(server) {
	189	// Add the default port if server doesn't contain a port number already
	190	if (server.indexOf(":") == -1) {
	191	return "http://" + server + ":21059";
	192	} else {
	193	return "http://" + server;
	194	}
	195	}
	196
	197	function rcchangeserverstatus(server, new_status) {
	198	var statusbar = document.getElementById("status");
	199	var spans = statusbar.getElementsByTagName("span");
	200	for (var i in spans) {
	201	if (spans[i].firstChild && 'data' in spans[i].firstChild && spans[i].firstChild.data == server) {
	202	spans[i].setAttribute("class", new_status);
	203	}
	204	}
	205	}
	206
66b29e97 SW	207	function rcpad2(x) {
	208	return (x < 10 ? "0" : "") + x;
	209	}
	210	function rcpad3(x) {
	211	return (x < 10 ? "00" : (x < 100 ? "0" : "")) + x;
	212	}
	213
bd1ed9dd SW	214	function rcformattime(t) {
	215	var d = t.getDay();
	216	d = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"][d];
	217	var h = t.getHours();
	218	var m = t.getMinutes();
	219	var s = t.getSeconds();
66b29e97	220	return d + " " + rcpad2(h) + ":" + rcpad2(m) + ":" + rcpad2(s);
bd1ed9dd SW	221	}
bd1ed9dd SW	222
244a78af SW	223	function rcaddservertimestamptohover(message, server) {
244a78af SW	224	var divs = message.UI.getElementsByTagName("div");
66b29e97	225	var t = message.ServerTimes[server];
244a78af SW	226	for (var i in divs) {
	227	if (divs[i].getAttribute && divs[i].getAttribute("class") == "servertimestamps") {
	228	var d = document.createElement("div");
66b29e97 SW	229	var text = t.getFullYear() + "-" +
	230	rcpad2(t.getMonth()) + "-" +
	231	rcpad2(t.getDay()) + " " +
	232	rcformattime(t) + "." +
	233	rcpad3(t.getMilliseconds()) + " " +
	234	server;
244a78af SW	235	d.appendChild(document.createTextNode(text));
	236	divs[i].appendChild(d);
	237	}
	238	}
	239	}
	240
bf8f6a39 SW	241	function rcmakemessageUI(message) {
	242	message.UI = document.createElement("div");
	243
	244	// Server count
	245	var servercount = document.createElement("span");
	246	servercount.setAttribute("class", "servercount");
	247	servercount.appendChild(document.createTextNode(Object.keys(message.ServerTimes).length));
	248	message.UI.appendChild(servercount);
33fdb071	249	message.UI.appendChild(document.createTextNode(" "));
bf8f6a39 SW	250
	251	// Timestamp
	252	var timestamp_text = message.Time ? rcformattime(message.Time) : "";
	253	var timestamp = document.createElement("span");
	254	timestamp.setAttribute("class", "timestamp");
	255	timestamp.appendChild(document.createTextNode(timestamp_text));
	256	message.UI.appendChild(timestamp);
33fdb071	257	message.UI.appendChild(document.createTextNode(" "));
bf8f6a39	258
244a78af SW	259	// Timestamp hover
	260	var timestamp_hover = document.createElement("div");
	261	timestamp_hover.setAttribute("class", "servertimestamps");
	262	timestamp.appendChild(timestamp_hover);
	263	for (var server in message.ServerTimes) {
	264	rcaddservertimestamptohover(message, server);
	265	}
	266
3a89c414 SW	267	// Classify different message types
	268	var text_span = document.createElement("span");
	269	var type;
	270	if (/^\\\* /.test(message.Text)) {
	271	type = "status";
	272	} else if (/^\* /.test(message.Text)) {
	273	type = "me";
c301e690 SW	274	} else if (/^-!- /.test(message.Text)) {
c301e690 SW	275	type = "local";
3a89c414 SW	276	} else {
	277	type = "text";
	278	}
	279	if (Object.keys(message.ServerTimes).length == 0) {
	280	type += " self";
	281	}
	282	text_span.setAttribute("class", type);
e04a2cfd SW	283
	284	// URL detection
	285	var text = message.Text;
	286	var URL_re = /\bhttps?:\/\/\S+/;
	287	while (URL_re.test(text)) {
	288	var match = URL_re.exec(text);
	289	var leading_text = text.substr(0, match.index);
	290	if (leading_text) {
	291	text_span.appendChild(document.createTextNode(leading_text));
	292	}
	293	var anchor = document.createElement("a");
606c01e1	294	anchor.setAttribute("rel", "nofollow");
e04a2cfd SW	295	anchor.setAttribute("href", encodeURI(match[0]));
	296	anchor.appendChild(document.createTextNode(match[0]));
	297	text_span.appendChild(anchor);
	298	text = text.substr(match.index + match[0].length);
	299	}
	300	if (text) {
	301	text_span.appendChild(document.createTextNode(text));
	302	}
	303
3a89c414	304	message.UI.appendChild(text_span);
bf8f6a39 SW	305	}
bf8f6a39 SW	306
0248a518	307	function rcaddmessagetohistory(message) {
7f54ca0a SW	308	var message_i;
7f54ca0a SW	309	if (message.Time) {
f9e5ee82 SW	310	for (var i = hist.length - 1; ; i--) {
f9e5ee82 SW	311	if (i < 0 \|\| (hist[i].Time && message.Time >= hist[i].Time)) {
7f54ca0a	312	message_i = i+1;
f9e5ee82	313	hist.splice(message_i, 0, message);
7f54ca0a SW	314	break;
	315	}
	316	}
	317	} else {
f9e5ee82 SW	318	hist.push(message);
f9e5ee82 SW	319	message_i = hist.length-1;
7f54ca0a	320	}
f9e5ee82 SW	321	if (message_i + 1 < hist.length) {
f9e5ee82 SW	322	rcaddmessagetoUI(message, hist[message_i + 1].UI);
16f7340b SW	323	} else {
	324	rcaddmessagetoUI(message, null);
	325	}
	326	}
7f54ca0a	327
16f7340b	328	function rcaddmessagetoUI(message, before) {
95ba71ee	329	if (!message.UI) {
bf8f6a39	330	rcmakemessageUI(message);
95ba71ee	331	}
0248a518	332	var h = document.getElementById("history");
16f7340b SW	333	if (before) {
16f7340b SW	334	h.insertBefore(message.UI, before);
7f54ca0a SW	335	} else {
	336	h.appendChild(message.UI);
	337	}
0248a518	338	window.scrollTo(0, document.body.scrollHeight);
0248a518 SW	339	}
	340
	341	function make_seen_key(id, text) {
	342	return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@");
	343	}
	344
40380bd3 SW	345	function rcupdatemessagetime(message) {
	346	// Set message.Time to be the median of message.ServerTimes
	347	var times = [];
	348	for (var i in message.ServerTimes) {
	349	times.push(message.ServerTimes[i]);
	350	}
	351	times.sort();
40380bd3	352	if (times.length % 2) {
ac4bf273	353	message.Time = times[(times.length-1)/2];
40380bd3	354	} else {
ac4bf273	355	var middle = times.length/2;
40380bd3 SW	356	var difference = times[middle].getTime() - times[middle-1].getTime();
	357	message.Time = new Date(times[middle-1].getTime() + difference/2);
	358	}
95ba71ee	359
f9e5ee82 SW	360	// This may have broken hist's in-sorted-order invariant
	361	var hi = hist.indexOf(message);
	362	if ((hist[hi-1] && hist[hi-1].Time > message.Time) \|\|
	363	(hist[hi+1] && hist[hi+1].Time < message.Time)) {
	364	hist.splice(hi,1);
95ba71ee SW	365	rcaddmessagetohistory(message);
95ba71ee SW	366	}
5be4c8ec SW	367
	368	// Update the UI
	369	var spans = message.UI.getElementsByTagName("span");
	370	for (var i in spans) {
c0aac85a SW	371	if (spans[i].getAttribute) {
	372	var type = spans[i].getAttribute("class");
	373	if (type == "servercount") {
	374	spans[i].firstChild.data = Object.keys(message.ServerTimes).length;
	375	} else if (type == "timestamp") {
	376	spans[i].firstChild.data = rcformattime(message.Time);
	377	}
5be4c8ec SW	378	}
5be4c8ec SW	379	}
40380bd3 SW	380	}
40380bd3 SW	381
79ced6f1 SW	382	function rcreceivemessages(server, messages) {
79ced6f1 SW	383	for (var i in messages) {
ad35b1be	384	var m = messages[i];
bd1ed9dd	385	m.Time = new Date(m.Time);
ad35b1be	386	var seen_key = make_seen_key(m.ID, m.Text);
705e26cf SW	387	if (seen_key in seen) {
705e26cf SW	388	seen[seen_key].ServerTimes[server] = m.Time;
40380bd3	389	rcupdatemessagetime(seen[seen_key]);
244a78af	390	rcaddservertimestamptohover(seen[seen_key], server);
705e26cf	391	} else {
16640c5d SW	392	m.ServerTimes = {};
16640c5d SW	393	m.ServerTimes[server] = m.Time;
869430fa	394	seen[seen_key] = m;
ad35b1be	395	rcaddmessagetohistory(m);
79ced6f1 SW	396	for (var i in servers) {
	397	rcchangeserverstatus(servers[i], "sad");
	398	}
0248a518	399	}
79ced6f1	400	rcchangeserverstatus(server, "happy");
0248a518	401	}
0248a518 SW	402	}
0248a518 SW	403
79ced6f1 SW	404	function rcfetch(server) {
	405	var delay = 10000; // TODO: Exponential backoff
	406	var xhr = new XMLHttpRequest();
	407	xhr.onreadystatechange = function() {
	408	if (this.readyState == this.DONE) {
	409	if (this.status == 200) {
	410	var rtxt = this.responseText;
	411	if (rtxt != null) {
	412	var messages = JSON.parse(rtxt);
	413	if (messages != null) {
79ced6f1 SW	414	delay = 40;
79ced6f1 SW	415	if (messages.length >= 1 && "Time" in messages[messages.length-1]) {
ad35b1be	416	since[server] = messages[messages.length-1].Time;
79ced6f1	417	}
92ca5f8a	418	rcreceivemessages(server, messages);
79ced6f1	419	}
0248a518 SW	420	}
0248a518 SW	421	}
79ced6f1	422	window.setTimeout(rcfetch, delay, server);
0248a518 SW	423	}
0248a518 SW	424	}
79ced6f1 SW	425	var uri = rcserverbase(server) + "/fetch";
	426	if (server in since) {
	427	uri += '?since="' + since[server] + '"';
	428	}
	429	xhr.open("GET", uri);
	430	xhr.send();
0248a518 SW	431	}
	432
	433	function rcconnect() {
19724ebd	434	makeExpandingArea(document.getElementById("expando"));
0248a518	435	for (var i in servers) {
79ced6f1	436	rcfetch(servers[i]);
0248a518 SW	437	// Status bar entry
	438	var status_indicator = document.createElement("span");
	439	status_indicator.appendChild(document.createTextNode(servers[i]));
	440	status_indicator.setAttribute("class", "sad");
	441	document.getElementById("status").appendChild(status_indicator);
	442	}
0248a518 SW	443	}
0248a518 SW	444
72f02cfd SW	445	function rcstart() {
	446	if (rcnick()) {
	447	document.getElementById("client").style.display = 'block';
	448	rcconnect();
	449	} else {
	450	document.getElementById("getnick").style.display = 'block';
	451	}
	452	}
	453
0248a518	454	function rcsend(d, message) {
7f54ca0a SW	455	message.ID = new Date().getTime() + "-" + session + "-" + Math.random();
7f54ca0a SW	456	seen[make_seen_key(message.ID, message.Text)] = message;
0248a518	457	var path = "/speak" +
7f54ca0a SW	458	"?id=" + encodeURIComponent(message.ID) +
7f54ca0a SW	459	"&text=" + encodeURIComponent(message.Text);
0248a518	460	for (var i in servers) {
9878d03b SW	461	var xhr = new XMLHttpRequest();
	462	xhr.open("POST", rcserverbase(servers[i]) + path);
	463	xhr.send();
0248a518 SW	464	}
	465	}
	466
5a6c082a SW	467	function rcinput(input) {
5a6c082a SW	468	var message;
219b6a2b	469	var re = /^\/(\S+)(\s(.*))?/;
5a6c082a	470	var match = re.exec(input);
16f7340b	471	if (match) {
112df9d1 SW	472	var command = match[1];
	473	var rest = match[3];
	474	if (command == 'me') {
	475	message = "* " + rcnick() + " " + rest;
	476	} else if (command == 'nick') {
219b6a2b SW	477	if (rcnick() == rest) {
	478	rcaddmessagetoUI({'Text': '-!- Your nick is already ' + rcnick(), 'ServerTimes': {}});
	479	return;
	480	}
a7a2c8b6 SW	481	if (rest) {
	482	message = "*** " + rcnick() + " is now known as " + rest;
	483	rcsetnick(rest);
	484	} else {
	485	rcaddmessagetoUI({'Text': '-!- /nick requires an argument', 'ServerTimes': {}});
	486	return;
	487	}
16f7340b	488	} else {
112df9d1	489	rcaddmessagetoUI({'Text': '-!- No such command: ' + command, 'ServerTimes': {}});
16f7340b SW	490	return;
16f7340b SW	491	}
5a6c082a SW	492	} else {
	493	message = "<" + rcnick() + "> " + input;
	494	}
	495
7f54ca0a	496	var m = {'Text': message, 'ServerTimes': {}};
869430fa SW	497	rcaddmessagetohistory(m);
869430fa SW	498	rcsend(m.UI, m);
5a6c082a SW	499	}
5a6c082a SW	500
0248a518 SW	501	function rckeydown(event) {
0248a518 SW	502	if (event.keyCode == 13) {
cf44a976 SW	503	if (document.input.say.value) {
	504	rcinput(document.input.say.value);
	505	}
0248a518	506	document.input.say.value = "";
19724ebd SW	507	return false;
	508	}
	509	}
	510
72f02cfd SW	511	function rcsetinitialnick() {
	512	if (document.getnickform.initial_nick.value) {
	513	rcsetnick(document.getnickform.initial_nick.value);
	514	document.getElementById("getnick").style.display = 'none';
	515	document.getElementById("client").style.display = 'block';
	516	rcconnect();
	517	}
	518	return false;
	519	}
	520
19724ebd SW	521	// From http://www.alistapart.com/articles/expanding-text-areas-made-elegant/
	522	function makeExpandingArea(container) {
	523	var area = container.querySelector('textarea');
	524	var span1 = container.querySelector('span');
	525	var span2 = document.getElementById('historypad');
	526	if (area.addEventListener) {
	527	area.addEventListener('input', function() {
	528	span1.textContent = area.value;
	529	span2.textContent = area.value;
	530	}, false);
	531	span1.textContent = area.value;
	532	span2.textContent = area.value;
	533	} else if (area.attachEvent) {
	534	// IE8 compatibility
	535	area.attachEvent('onpropertychange', function() {
	536	span1.innerText = area.value;
	537	span2.innerText = area.value;
	538	});
	539	span1.innerText = area.value;
	540	span2.innerText = area.value;
0248a518 SW	541	}
	542	}
	543	//--><!]]></script>
	544
827f21bb SW	545	</head>
827f21bb SW	546
72f02cfd	547	<body onload="rcstart()">
70f46223	548	<div id="container">
5afebfc6	549	<div class="banner">(You are using <a href="https://github.com/chkno/reliable-chat">Reliable Chat</a>)</div>
70f46223	550	<div id="history"></div>
19724ebd SW	551	<div class="expandingArea" style="visibility: hidden">
	552	<pre><span id="historypad"></span><br></pre>
	553	</div>
72f02cfd SW	554	<div id="getnick">
	555	<h1>Set your nick</h1>
	556	<form name="getnickform" onsubmit="return rcsetinitialnick();">
	557	<input id="initial_nick" type="text"></input>
	558	<input type="submit" value="ok"></input>
	559	</form>
	560	</div>
70f46223 JH	561	<div id="client">
	562	<div id="input">
	563	<form name="input" onsubmit="return false" autocomplete="off">
19724ebd SW	564	<div id="expando" class="expandingArea">
	565	<pre><span></span><br></pre>
	566	<textarea id="say" onkeydown="return rckeydown(event)" autofocus="autofocus"></textarea>
	567	</div>
70f46223	568	</form></div>
19724ebd	569	<div id="status"></div>
70f46223 JH	570	</div>
70f46223 JH	571	</div>
827f21bb SW	572	</body>
827f21bb SW	573	</html>