git.scottworley.com Git - reliable-chat/blob - webclient/rc.html

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