git.scottworley.com Git - reliable-chat/blame_incremental

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Commit	Line	Data
	1	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
	2	"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
	3	<html xmlns="http://www.w3.org/1999/xhtml">
	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	-->
	22	<head>
	23	<title>Reliable Chat</title>
	24	<style type="text/css"><!--/--><![CDATA[/><!--*/
	25	html, body {
	26	width: 99.9%;
	27	height: 100%;
	28	margin: 0;
	29	padding: 0;
	30	background-color: #293134;
	31	color: silver;
	32	font-family: monospace;
	33	}
	34	a {
	35	color: white;
	36	}
	37	#container {
	38	height: 100%;
	39	}
	40	#status {
	41	width: 100%;
	42	text-align: right;
	43	background-color: #293134;
	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%;
	55	background-color: #293134;
	56	}
	57	#say { width: 100% }
	58	#history {
	59	padding: 0px 5px 55px 5px;
	60	vertical-align: bottom
	61	}
	62	.banner {
	63	font-size: 85%;
	64	text-align: right;
	65	}
	66	.servercount {
	67	margin-right: 0.5em;
	68	font-size: 70%;
	69	}
	70	.timestamp {
	71	margin-right: 0.8em;
	72	}
	73	.timestamp:hover, .timestamp:hover .servertimestamps {
	74	background-color: #556;
	75	}
	76	.timestamp:hover .servertimestamps {
	77	display: block;
	78	}
	79	.servertimestamps {
	80	display: none;
	81	position: absolute;
	82	left: 3em;
	83	z-index: 1;
	84	border: 1px solid black;
	85	border-radius: 5px;
	86	padding-left: 5px;
	87	padding-right: 5px;
	88	}
	89	img { width: 1px; height: 1px; }
	90	iframe { display: none }
	91	#status span { margin-right: 10px; }
	92	#status span.sad {
	93	background-color: #f00;
	94	color: #fff;
	95	border: 1px solid black;
	96	border-radius: 5px;
	97	padding-left: 5px;
	98	padding-right: 5px;
	99	}
	100	#status span.happy {
	101	background-color: #0f0;
	102	color: #000;
	103	border: 1px solid black;
	104	border-radius: 5px;
	105	padding-left: 5px;
	106	padding-right: 5px;
	107	}
	108	/]]>/--></style>
	109	<script type="text/javascript"><!--//--><![CDATA[//><!--
	110	var servers = ['chkno.net', 'rc2.chkno.net', 'echto.net', 'the-wes.com', 'vibrantlogic.com'];
	111
	112	var session = Math.random(); // For outgoing message IDs
	113	var since = {}; // server -> time: For fetch?since=
	114	var seen = {}; // seen_key -> message
	115	var history = []; // List of messages sorted by Time
	116	// Messages have these fields:
	117	// Time: The timestamp. Median of ServerTimes
	118	// ID: Some unique string for deduping
	119	// Text: The text of the message
	120	// ServerTimes: server -> timestamp
	121	// UI: The DOM node for this message in the UI
	122
	123	function rcnick() {
	124	var nick = localStorage.getItem("nick");
	125	if (nick) {
	126	return nick;
	127	}
	128	return 'anonymous';
	129	}
	130
	131	function rcsetnick(new_nick) {
	132	localStorage.setItem("nick", new_nick);
	133	}
	134
	135	function rcserverbase(server) {
	136	// Add the default port if server doesn't contain a port number already
	137	if (server.indexOf(":") == -1) {
	138	return "http://" + server + ":21059";
	139	} else {
	140	return "http://" + server;
	141	}
	142	}
	143
	144	function rcchangeserverstatus(server, new_status) {
	145	var statusbar = document.getElementById("status");
	146	var spans = statusbar.getElementsByTagName("span");
	147	for (var i in spans) {
	148	if (spans[i].firstChild && 'data' in spans[i].firstChild && spans[i].firstChild.data == server) {
	149	spans[i].setAttribute("class", new_status);
	150	}
	151	}
	152	}
	153
	154	function rcpad2(x) {
	155	return (x < 10 ? "0" : "") + x;
	156	}
	157	function rcpad3(x) {
	158	return (x < 10 ? "00" : (x < 100 ? "0" : "")) + x;
	159	}
	160
	161	function rcformattime(t) {
	162	var d = t.getDay();
	163	d = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"][d];
	164	var h = t.getHours();
	165	var m = t.getMinutes();
	166	var s = t.getSeconds();
	167	return d + " " + rcpad2(h) + ":" + rcpad2(m) + ":" + rcpad2(s);
	168	}
	169
	170	function rcaddservertimestamptohover(message, server) {
	171	var divs = message.UI.getElementsByTagName("div");
	172	var t = message.ServerTimes[server];
	173	for (var i in divs) {
	174	if (divs[i].getAttribute && divs[i].getAttribute("class") == "servertimestamps") {
	175	var d = document.createElement("div");
	176	var text = t.getFullYear() + "-" +
	177	rcpad2(t.getMonth()) + "-" +
	178	rcpad2(t.getDay()) + " " +
	179	rcformattime(t) + "." +
	180	rcpad3(t.getMilliseconds()) + " " +
	181	server;
	182	d.appendChild(document.createTextNode(text));
	183	divs[i].appendChild(d);
	184	}
	185	}
	186	}
	187
	188	function rcmakemessageUI(message) {
	189	message.UI = document.createElement("div");
	190
	191	// Server count
	192	var servercount = document.createElement("span");
	193	servercount.setAttribute("class", "servercount");
	194	servercount.appendChild(document.createTextNode(Object.keys(message.ServerTimes).length));
	195	message.UI.appendChild(servercount);
	196
	197	// Timestamp
	198	var timestamp_text = message.Time ? rcformattime(message.Time) : "";
	199	var timestamp = document.createElement("span");
	200	timestamp.setAttribute("class", "timestamp");
	201	timestamp.appendChild(document.createTextNode(timestamp_text));
	202	message.UI.appendChild(timestamp);
	203
	204	// Timestamp hover
	205	var timestamp_hover = document.createElement("div");
	206	timestamp_hover.setAttribute("class", "servertimestamps");
	207	timestamp.appendChild(timestamp_hover);
	208	for (var server in message.ServerTimes) {
	209	rcaddservertimestamptohover(message, server);
	210	}
	211
	212	// Classify different message types
	213	var text_span = document.createElement("span");
	214	var type;
	215	if (/^\\\* /.test(message.Text)) {
	216	type = "status";
	217	} else if (/^\* /.test(message.Text)) {
	218	type = "me";
	219	} else {
	220	type = "text";
	221	}
	222	if (Object.keys(message.ServerTimes).length == 0) {
	223	type += " self";
	224	}
	225	text_span.setAttribute("class", type);
	226
	227	// URL detection
	228	var text = message.Text;
	229	var URL_re = /\bhttps?:\/\/\S+/;
	230	while (URL_re.test(text)) {
	231	var match = URL_re.exec(text);
	232	var leading_text = text.substr(0, match.index);
	233	if (leading_text) {
	234	text_span.appendChild(document.createTextNode(leading_text));
	235	}
	236	var anchor = document.createElement("a");
	237	anchor.setAttribute("rel", "nofollow");
	238	anchor.setAttribute("href", encodeURI(match[0]));
	239	anchor.appendChild(document.createTextNode(match[0]));
	240	text_span.appendChild(anchor);
	241	text = text.substr(match.index + match[0].length);
	242	}
	243	if (text) {
	244	text_span.appendChild(document.createTextNode(text));
	245	}
	246
	247	message.UI.appendChild(text_span);
	248	}
	249
	250	function rcaddmessagetohistory(message) {
	251	var message_i;
	252	if (message.Time) {
	253	for (var i = history.length - 1; ; i--) {
	254	if (i < 0 \|\| (history[i].Time && message.Time >= history[i].Time)) {
	255	message_i = i+1;
	256	history.splice(message_i, 0, message);
	257	break;
	258	}
	259	}
	260	} else {
	261	history.push(message);
	262	message_i = history.length-1;
	263	}
	264
	265	if (!message.UI) {
	266	rcmakemessageUI(message);
	267	}
	268	var h = document.getElementById("history");
	269	if (message_i + 1 < history.length) {
	270	h.insertBefore(message.UI, history[message_i + 1].UI);
	271	} else {
	272	h.appendChild(message.UI);
	273	}
	274	window.scrollTo(0, document.body.scrollHeight);
	275	}
	276
	277	function make_seen_key(id, text) {
	278	return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@");
	279	}
	280
	281	function rcupdatemessagetime(message) {
	282	// Set message.Time to be the median of message.ServerTimes
	283	var times = [];
	284	for (var i in message.ServerTimes) {
	285	times.push(message.ServerTimes[i]);
	286	}
	287	times.sort();
	288	if (times.length % 2) {
	289	message.Time = times[(times.length-1)/2];
	290	} else {
	291	var middle = times.length/2;
	292	var difference = times[middle].getTime() - times[middle-1].getTime();
	293	message.Time = new Date(times[middle-1].getTime() + difference/2);
	294	}
	295
	296	// This may have broken history's in-sorted-order invariant
	297	var hi = history.indexOf(message);
	298	if ((history[hi-1] && history[hi-1].Time > message.Time) \|\|
	299	(history[hi+1] && history[hi+1].Time < message.Time)) {
	300	history.splice(hi,1);
	301	rcaddmessagetohistory(message);
	302	}
	303
	304	// Update the UI
	305	var spans = message.UI.getElementsByTagName("span");
	306	for (var i in spans) {
	307	if (spans[i].getAttribute) {
	308	var type = spans[i].getAttribute("class");
	309	if (type == "servercount") {
	310	spans[i].firstChild.data = Object.keys(message.ServerTimes).length;
	311	} else if (type == "timestamp") {
	312	spans[i].firstChild.data = rcformattime(message.Time);
	313	}
	314	}
	315	}
	316	}
	317
	318	function rcreceivemessages(server, messages) {
	319	for (var i in messages) {
	320	var m = messages[i];
	321	m.Time = new Date(m.Time);
	322	var seen_key = make_seen_key(m.ID, m.Text);
	323	if (seen_key in seen) {
	324	seen[seen_key].ServerTimes[server] = m.Time;
	325	rcupdatemessagetime(seen[seen_key]);
	326	rcaddservertimestamptohover(seen[seen_key], server);
	327	} else {
	328	m.ServerTimes = {};
	329	m.ServerTimes[server] = m.Time;
	330	seen[seen_key] = m;
	331	rcaddmessagetohistory(m);
	332	for (var i in servers) {
	333	rcchangeserverstatus(servers[i], "sad");
	334	}
	335	}
	336	rcchangeserverstatus(server, "happy");
	337	}
	338	}
	339
	340	function rcfetch(server) {
	341	var delay = 10000; // TODO: Exponential backoff
	342	var xhr = new XMLHttpRequest();
	343	xhr.onreadystatechange = function() {
	344	if (this.readyState == this.DONE) {
	345	if (this.status == 200) {
	346	var rtxt = this.responseText;
	347	if (rtxt != null) {
	348	var messages = JSON.parse(rtxt);
	349	if (messages != null) {
	350	delay = 40;
	351	if (messages.length >= 1 && "Time" in messages[messages.length-1]) {
	352	since[server] = messages[messages.length-1].Time;
	353	}
	354	rcreceivemessages(server, messages);
	355	}
	356	}
	357	}
	358	window.setTimeout(rcfetch, delay, server);
	359	}
	360	}
	361	var uri = rcserverbase(server) + "/fetch";
	362	if (server in since) {
	363	uri += '?since="' + since[server] + '"';
	364	}
	365	xhr.open("GET", uri);
	366	xhr.send();
	367	}
	368
	369	function rcconnect() {
	370	for (var i in servers) {
	371	rcfetch(servers[i]);
	372	// Status bar entry
	373	var status_indicator = document.createElement("span");
	374	status_indicator.appendChild(document.createTextNode(servers[i]));
	375	status_indicator.setAttribute("class", "sad");
	376	document.getElementById("status").appendChild(status_indicator);
	377	}
	378	}
	379
	380	function rcsend(d, message) {
	381	message.ID = new Date().getTime() + "-" + session + "-" + Math.random();
	382	seen[make_seen_key(message.ID, message.Text)] = message;
	383	var path = "/speak" +
	384	"?id=" + encodeURIComponent(message.ID) +
	385	"&text=" + encodeURIComponent(message.Text);
	386	for (var i in servers) {
	387	var uri = rcserverbase(servers[i]) + path;
	388	var img = document.createElement("img");
	389	img.setAttribute("src", uri);
	390	d.appendChild(img);
	391	}
	392	}
	393
	394	function rcinput(input) {
	395	var message;
	396	var re = /^\/([a-z]+) (.*)/
	397	var match = re.exec(input);
	398	if (match && match[1] == 'me') {
	399	message = "* " + rcnick() + " " + match[2];
	400	} else if (match && match[1] == 'nick') {
	401	message = "*** " + rcnick() + " is now known as " + match[2];
	402	rcsetnick(match[2]);
	403	} else {
	404	message = "<" + rcnick() + "> " + input;
	405	}
	406
	407	var m = {'Text': message, 'ServerTimes': {}};
	408	rcaddmessagetohistory(m);
	409	rcsend(m.UI, m);
	410	}
	411
	412	function rckeydown(event) {
	413	if (event.keyCode == 13) {
	414	rcinput(document.input.say.value);
	415	document.input.say.value = "";
	416
	417	}
	418	}
	419	//--><!]]></script>
	420
	421	</head>
	422
	423	<body onload="rcconnect()">
	424	<div id="container">
	425	<div class="banner">(You are using <a href="https://github.com/chkno/reliable-chat">Reliable Chat</a>)</div>
	426	<div id="history"></div>
	427	<div id="client">
	428	<div id="input">
	429	<form name="input" onsubmit="return false" autocomplete="off">
	430	<input id="say" onkeydown="return rckeydown(event)" autocomplete="off" autofocus="autofocus"></input>
	431	</form></div>
	432	<div id="status"> </div>
	433	</div>
	434	</div>
	435	</body>
	436	</html>