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	#container {
	35	height: 100%;
	36	}
	37	#status {
	38	width: 100%;
	39	text-align: right;
	40	background-color: #293134;
	41	padding: 5px 5px 5px 0px;
	42	}
	43	#client {
	44	width: 98.5%;
	45	padding: 0px 0px 0px 5px;
	46	height: 50px;
	47	position: fixed;
	48	bottom: 0;
	49	}
	50	#input {
	51	width: 100%;
	52	background-color: #293134;
	53	}
	54	#say { width: 100% }
	55	#history {
	56	padding: 0px 5px 55px 5px;
	57	vertical-align: bottom
	58	}
	59	.servercount {
	60	margin-right: 0.5em;
	61	font-size: 70%;
	62	}
	63	.timestamp {
	64	margin-right: 0.8em;
	65	}
	66	.timestamp:hover, .timestamp:hover .servertimestamps {
	67	background-color: #556;
	68	}
	69	.timestamp:hover .servertimestamps {
	70	display: block;
	71	}
	72	.servertimestamps {
	73	display: none;
	74	position: absolute;
	75	left: 3em;
	76	z-index: 1;
	77	border: 1px solid black;
	78	border-radius: 5px;
	79	padding-left: 5px;
	80	padding-right: 5px;
	81	}
	82	img { width: 1px; height: 1px; }
	83	iframe { display: none }
	84	#status span { margin-right: 10px; }
	85	#status span.sad {
	86	background-color: #f00;
	87	color: #fff;
	88	border: 1px solid black;
	89	border-radius: 5px;
	90	padding-left: 5px;
	91	padding-right: 5px;
	92	}
	93	#status span.happy {
	94	background-color: #0f0;
	95	color: #000;
	96	border: 1px solid black;
	97	border-radius: 5px;
	98	padding-left: 5px;
	99	padding-right: 5px;
	100	}
	101	/]]>/--></style>
	102	<script type="text/javascript"><!--//--><![CDATA[//><!--
	103	var servers = ['chkno.net', 'rc2.chkno.net', 'echto.net', 'the-wes.com', 'vibrantlogic.com'];
	104
	105	var session = Math.random(); // For outgoing message IDs
	106	var since = {}; // server -> time: For fetch?since=
	107	var seen = {}; // seen_key -> message
	108	var history = []; // List of messages sorted by Time
	109	// Messages have these fields:
	110	// Time: The timestamp. Median of ServerTimes
	111	// ID: Some unique string for deduping
	112	// Text: The text of the message
	113	// ServerTimes: server -> timestamp
	114	// UI: The DOM node for this message in the UI
	115
	116	function rcnick() {
	117	var nick = localStorage.getItem("nick");
	118	if (nick) {
	119	return nick;
	120	}
	121	return 'anonymous';
	122	}
	123
	124	function rcsetnick(new_nick) {
	125	localStorage.setItem("nick", new_nick);
	126	}
	127
	128	function rcserverbase(server) {
	129	// Add the default port if server doesn't contain a port number already
	130	if (server.indexOf(":") == -1) {
	131	return "http://" + server + ":21059";
	132	} else {
	133	return "http://" + server;
	134	}
	135	}
	136
	137	function rcchangeserverstatus(server, new_status) {
	138	var statusbar = document.getElementById("status");
	139	var spans = statusbar.getElementsByTagName("span");
	140	for (var i in spans) {
	141	if (spans[i].firstChild && 'data' in spans[i].firstChild && spans[i].firstChild.data == server) {
	142	spans[i].setAttribute("class", new_status);
	143	}
	144	}
	145	}
	146
	147	function rcformattime(t) {
	148	var d = t.getDay();
	149	d = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"][d];
	150	var h = t.getHours();
	151	var m = t.getMinutes();
	152	var s = t.getSeconds();
	153	function pad(x) {
	154	return (x < 10 ? "0" : "") + x;
	155	}
	156	return d + " " + pad(h) + ":" + pad(m) + ":" + pad(s);
	157	}
	158
	159	function rcaddservertimestamptohover(message, server) {
	160	var divs = message.UI.getElementsByTagName("div");
	161	for (var i in divs) {
	162	if (divs[i].getAttribute && divs[i].getAttribute("class") == "servertimestamps") {
	163	var d = document.createElement("div");
	164	function pad(x) {
	165	return (x < 10 ? "00" : (x < 100 ? "0" : "")) + x;
	166	}
	167	var text = rcformattime(message.ServerTimes[server]) + "." + pad(message.ServerTimes[server].getUTCMilliseconds()) + " " + server;
	168	d.appendChild(document.createTextNode(text));
	169	divs[i].appendChild(d);
	170	}
	171	}
	172	}
	173
	174	function rcmakemessageUI(message) {
	175	message.UI = document.createElement("div");
	176
	177	// Server count
	178	var servercount = document.createElement("span");
	179	servercount.setAttribute("class", "servercount");
	180	servercount.appendChild(document.createTextNode(Object.keys(message.ServerTimes).length));
	181	message.UI.appendChild(servercount);
	182
	183	// Timestamp
	184	var timestamp_text = message.Time ? rcformattime(message.Time) : "";
	185	var timestamp = document.createElement("span");
	186	timestamp.setAttribute("class", "timestamp");
	187	timestamp.appendChild(document.createTextNode(timestamp_text));
	188	message.UI.appendChild(timestamp);
	189
	190	// Timestamp hover
	191	var timestamp_hover = document.createElement("div");
	192	timestamp_hover.setAttribute("class", "servertimestamps");
	193	timestamp.appendChild(timestamp_hover);
	194	for (var server in message.ServerTimes) {
	195	rcaddservertimestamptohover(message, server);
	196	}
	197
	198	// Classify different message types
	199	var text_span = document.createElement("span");
	200	var type;
	201	if (/^\\\* /.test(message.Text)) {
	202	type = "status";
	203	} else if (/^\* /.test(message.Text)) {
	204	type = "me";
	205	} else {
	206	type = "text";
	207	}
	208	if (Object.keys(message.ServerTimes).length == 0) {
	209	type += " self";
	210	}
	211	text_span.setAttribute("class", type);
	212	text_span.appendChild(document.createTextNode(message.Text));
	213	message.UI.appendChild(text_span);
	214	}
	215
	216	function rcaddmessagetohistory(message) {
	217	var message_i;
	218	if (message.Time) {
	219	for (var i = history.length - 1; ; i--) {
	220	if (i < 0 \|\| (history[i].Time && message.Time >= history[i].Time)) {
	221	message_i = i+1;
	222	history.splice(message_i, 0, message);
	223	break;
	224	}
	225	}
	226	} else {
	227	history.push(message);
	228	message_i = history.length-1;
	229	}
	230
	231	if (!message.UI) {
	232	rcmakemessageUI(message);
	233	}
	234	var h = document.getElementById("history");
	235	if (message_i + 1 < history.length) {
	236	h.insertBefore(message.UI, history[message_i + 1].UI);
	237	} else {
	238	h.appendChild(message.UI);
	239	}
	240	window.scrollTo(0, document.body.scrollHeight);
	241	}
	242
	243	function make_seen_key(id, text) {
	244	return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@");
	245	}
	246
	247	function rcupdatemessagetime(message) {
	248	// Set message.Time to be the median of message.ServerTimes
	249	var times = [];
	250	for (var i in message.ServerTimes) {
	251	times.push(message.ServerTimes[i]);
	252	}
	253	times.sort();
	254	if (times.length % 2) {
	255	message.Time = times[(times.length-1)/2];
	256	} else {
	257	var middle = times.length/2;
	258	var difference = times[middle].getTime() - times[middle-1].getTime();
	259	message.Time = new Date(times[middle-1].getTime() + difference/2);
	260	}
	261
	262	// This may have broken history's in-sorted-order invariant
	263	var hi = history.indexOf(message);
	264	if ((history[hi-1] && history[hi-1].Time > message.Time) \|\|
	265	(history[hi+1] && history[hi+1].Time < message.Time)) {
	266	history.splice(hi,1);
	267	rcaddmessagetohistory(message);
	268	}
	269
	270	// Update the UI
	271	var spans = message.UI.getElementsByTagName("span");
	272	for (var i in spans) {
	273	if (spans[i].getAttribute) {
	274	var type = spans[i].getAttribute("class");
	275	if (type == "servercount") {
	276	spans[i].firstChild.data = Object.keys(message.ServerTimes).length;
	277	} else if (type == "timestamp") {
	278	spans[i].firstChild.data = rcformattime(message.Time);
	279	}
	280	}
	281	}
	282	}
	283
	284	function rcreceivemessages(server, messages) {
	285	for (var i in messages) {
	286	var m = messages[i];
	287	m.Time = new Date(m.Time);
	288	var seen_key = make_seen_key(m.ID, m.Text);
	289	if (seen_key in seen) {
	290	seen[seen_key].ServerTimes[server] = m.Time;
	291	rcupdatemessagetime(seen[seen_key]);
	292	rcaddservertimestamptohover(seen[seen_key], server);
	293	} else {
	294	m.ServerTimes = {};
	295	m.ServerTimes[server] = m.Time;
	296	seen[seen_key] = m;
	297	rcaddmessagetohistory(m);
	298	for (var i in servers) {
	299	rcchangeserverstatus(servers[i], "sad");
	300	}
	301	}
	302	rcchangeserverstatus(server, "happy");
	303	}
	304	}
	305
	306	function rcfetch(server) {
	307	var delay = 10000; // TODO: Exponential backoff
	308	var xhr = new XMLHttpRequest();
	309	xhr.onreadystatechange = function() {
	310	if (this.readyState == this.DONE) {
	311	if (this.status == 200) {
	312	var rtxt = this.responseText;
	313	if (rtxt != null) {
	314	var messages = JSON.parse(rtxt);
	315	if (messages != null) {
	316	delay = 40;
	317	if (messages.length >= 1 && "Time" in messages[messages.length-1]) {
	318	since[server] = messages[messages.length-1].Time;
	319	}
	320	rcreceivemessages(server, messages);
	321	}
	322	}
	323	}
	324	window.setTimeout(rcfetch, delay, server);
	325	}
	326	}
	327	var uri = rcserverbase(server) + "/fetch";
	328	if (server in since) {
	329	uri += '?since="' + since[server] + '"';
	330	}
	331	xhr.open("GET", uri);
	332	xhr.send();
	333	}
	334
	335	function rcconnect() {
	336	for (var i in servers) {
	337	rcfetch(servers[i]);
	338	// Status bar entry
	339	var status_indicator = document.createElement("span");
	340	status_indicator.appendChild(document.createTextNode(servers[i]));
	341	status_indicator.setAttribute("class", "sad");
	342	document.getElementById("status").appendChild(status_indicator);
	343	}
	344	}
	345
	346	function rcsend(d, message) {
	347	message.ID = new Date().getTime() + "-" + session + "-" + Math.random();
	348	seen[make_seen_key(message.ID, message.Text)] = message;
	349	var path = "/speak" +
	350	"?id=" + encodeURIComponent(message.ID) +
	351	"&text=" + encodeURIComponent(message.Text);
	352	for (var i in servers) {
	353	var uri = rcserverbase(servers[i]) + path;
	354	var img = document.createElement("img");
	355	img.setAttribute("src", uri);
	356	d.appendChild(img);
	357	}
	358	}
	359
	360	function rcinput(input) {
	361	var message;
	362	var re = /^\/([a-z]+) (.*)/
	363	var match = re.exec(input);
	364	if (match && match[1] == 'me') {
	365	message = "* " + rcnick() + " " + match[2];
	366	} else if (match && match[1] == 'nick') {
	367	message = "*** " + rcnick() + " is now known as " + match[2];
	368	rcsetnick(match[2]);
	369	} else {
	370	message = "<" + rcnick() + "> " + input;
	371	}
	372
	373	var m = {'Text': message, 'ServerTimes': {}};
	374	rcaddmessagetohistory(m);
	375	rcsend(m.UI, m);
	376	}
	377
	378	function rckeydown(event) {
	379	if (event.keyCode == 13) {
	380	rcinput(document.input.say.value);
	381	document.input.say.value = "";
	382
	383	}
	384	}
	385	//--><!]]></script>
	386
	387	</head>
	388
	389	<body onload="rcconnect()">
	390	<div id="container">
	391	<div id="history"></div>
	392	<div id="client">
	393	<div id="input">
	394	<form name="input" onsubmit="return false" autocomplete="off">
	395	<input id="say" onkeydown="return rckeydown(event)" autocomplete="off" autofocus="autofocus"></input>
	396	</form></div>
	397	<div id="status"> </div>
	398	</div>
	399	</div>
	400	</body>
	401	</html>