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