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                 display: none;
  51         }
  52         #input {
  53                 width: 100%;
  54                 background-color: #293134;
  55         }
  56         #say { width: 100% }
  57         #history {
  58                 padding: 0px 5px 30px 5px;
  59                 vertical-align: bottom;
  60         }
  61         .banner {
  62                 font-size: 85%;
  63                 text-align: right;
  64         }
  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         }
  77         .servercount {
  78                 margin-right: -0.5em;
  79                 font-size: 70%;
  80         }
  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         }
  97         img { width: 1px; height: 1px; }
  98         iframe { display: none }
  99         #status span { margin-right: 10px; }
 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         }
 116         #getnick {
 117                 padding-left: 3em;
 118                 display: none;
 119         }
 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;
 125                 background: silver;
 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
 165   /*]]>*/--></style>
 166   <script type="text/javascript"><!--//--><![CDATA[//><!--
 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'];
 168
 169         var session = Math.random();  // For outgoing message IDs
 170         var since = {};    // server -> time: For fetch?since=
 171         var seen = {};     // seen_key -> message
 172         var history = [];  // List of messages sorted by Time
 173         // Messages have these fields:
 174         //   Time: The timestamp.  Median of ServerTimes
 175         //   ID: Some unique string for deduping
 176         //   Text: The text of the message
 177         //   ServerTimes: server -> timestamp
 178         //   UI: The DOM node for this message in the UI
 179
 180         function rcnick() {
 181                 return localStorage.getItem("nick");
 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
 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
 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();
 220                 return d + " " + rcpad2(h) + ":" + rcpad2(m) + ":" + rcpad2(s);
 221         }
 222
 223         function rcaddservertimestamptohover(message, server) {
 224                 var divs = message.UI.getElementsByTagName("div");
 225                 var t = message.ServerTimes[server];
 226                 for (var i in divs) {
 227                         if (divs[i].getAttribute && divs[i].getAttribute("class") == "servertimestamps") {
 228                                 var d = document.createElement("div");
 229                                 var text = t.getFullYear() + "-" +
 230                                         rcpad2(t.getMonth()) + "-" +
 231                                         rcpad2(t.getDay()) + " " +
 232                                         rcformattime(t) + "." +
 233                                         rcpad3(t.getMilliseconds()) + " " +
 234                                         server;
 235                                 d.appendChild(document.createTextNode(text));
 236                                 divs[i].appendChild(d);
 237                         }
 238                 }
 239         }
 240
 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);
 249                 message.UI.appendChild(document.createTextNode(" "));
 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);
 257                 message.UI.appendChild(document.createTextNode(" "));
 258
 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
 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";
 274                 } else if (/^-!- /.test(message.Text)) {
 275                         type = "local";
 276                 } else {
 277                         type = "text";
 278                 }
 279                 if (Object.keys(message.ServerTimes).length == 0) {
 280                         type += " self";
 281                 }
 282                 text_span.setAttribute("class", type);
 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");
 294                         anchor.setAttribute("rel", "nofollow");
 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
 304                 message.UI.appendChild(text_span);
 305         }
 306
 307         function rcaddmessagetohistory(message) {
 308                 var message_i;
 309                 if (message.Time) {
 310                         for (var i = history.length - 1; ; i--) {
 311                                 if (i < 0 || (history[i].Time && message.Time >= history[i].Time)) {
 312                                         message_i = i+1;
 313                                         history.splice(message_i, 0, message);
 314                                         break;
 315                                 }
 316                         }
 317                 } else {
 318                         history.push(message);
 319                         message_i = history.length-1;
 320                 }
 321                 if (message_i + 1 < history.length) {
 322                         rcaddmessagetoUI(message, history[message_i + 1].UI);
 323                 } else {
 324                         rcaddmessagetoUI(message, null);
 325                 }
 326         }
 327
 328         function rcaddmessagetoUI(message, before) {
 329                 if (!message.UI) {
 330                         rcmakemessageUI(message);
 331                 }
 332                 var h = document.getElementById("history");
 333                 if (before) {
 334                         h.insertBefore(message.UI, before);
 335                 } else {
 336                         h.appendChild(message.UI);
 337                 }
 338                 window.scrollTo(0, document.body.scrollHeight);
 339         }
 340
 341         function make_seen_key(id, text) {
 342                 return id.replace(/@/g, "@@") + "_@_" + text.replace(/@/g, "@@");
 343         }
 344
 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();
 352                 if (times.length % 2) {
 353                         message.Time = times[(times.length-1)/2];
 354                 } else {
 355                         var middle = times.length/2;
 356                         var difference = times[middle].getTime() - times[middle-1].getTime();
 357                         message.Time = new Date(times[middle-1].getTime() + difference/2);
 358                 }
 359
 360                 // This may have broken history's in-sorted-order invariant
 361                 var hi = history.indexOf(message);
 362                 if ((history[hi-1] && history[hi-1].Time > message.Time) ||
 363                     (history[hi+1] && history[hi+1].Time < message.Time)) {
 364                         history.splice(hi,1);
 365                         rcaddmessagetohistory(message);
 366                 }
 367
 368                 // Update the UI
 369                 var spans = message.UI.getElementsByTagName("span");
 370                 for (var i in spans) {
 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                                 }
 378                         }
 379                 }
 380         }
 381
 382         function rcreceivemessages(server, messages) {
 383                 for (var i in messages) {
 384                         var m = messages[i];
 385                         m.Time = new Date(m.Time);
 386                         var seen_key = make_seen_key(m.ID, m.Text);
 387                         if (seen_key in seen) {
 388                                 seen[seen_key].ServerTimes[server] = m.Time;
 389                                 rcupdatemessagetime(seen[seen_key]);
 390                                 rcaddservertimestamptohover(seen[seen_key], server);
 391                         } else {
 392                                 m.ServerTimes = {};
 393                                 m.ServerTimes[server] = m.Time;
 394                                 seen[seen_key] = m;
 395                                 rcaddmessagetohistory(m);
 396                                 for (var i in servers) {
 397                                         rcchangeserverstatus(servers[i], "sad");
 398                                 }
 399                         }
 400                         rcchangeserverstatus(server, "happy");
 401                 }
 402         }
 403
 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) {
 414                                                         delay = 40;
 415                                                         if (messages.length >= 1 && "Time" in messages[messages.length-1]) {
 416                                                                 since[server] = messages[messages.length-1].Time;
 417                                                         }
 418                                                         rcreceivemessages(server, messages);
 419                                                 }
 420                                         }
 421                                 }
 422                                 window.setTimeout(rcfetch, delay, server);
 423                         }
 424                 }
 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();
 431         }
 432
 433         function rcconnect() {
 434                 makeExpandingArea(document.getElementById("expando"));
 435                 for (var i in servers) {
 436                         rcfetch(servers[i]);
 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                 }
 443         }
 444
 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
 454         function rcsend(d, message) {
 455                 message.ID = new Date().getTime() + "-" + session + "-" + Math.random();
 456                 seen[make_seen_key(message.ID, message.Text)] = message;
 457                 var path = "/speak" +
 458                         "?id=" + encodeURIComponent(message.ID) +
 459                         "&text=" + encodeURIComponent(message.Text);
 460                 for (var i in servers) {
 461                         var xhr = new XMLHttpRequest();
 462                         xhr.open("POST", rcserverbase(servers[i]) + path);
 463                         xhr.send();
 464                 }
 465         }
 466
 467         function rcinput(input) {
 468                 var message;
 469                 var re = /^\/(\S+)(\s(.*))?/;
 470                 var match = re.exec(input);
 471                 if (match) {
 472                         var command = match[1];
 473                         var rest = match[3];
 474                         if (command == 'me') {
 475                                 message = "* " + rcnick() + "  " + rest;
 476                         } else if (command == 'nick') {
 477                                 if (rcnick() == rest) {
 478                                         rcaddmessagetoUI({'Text': '-!- Your nick is already ' + rcnick(), 'ServerTimes': {}});
 479                                         return;
 480                                 }
 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                                 }
 488                         } else {
 489                                 rcaddmessagetoUI({'Text': '-!- No such command: ' + command, 'ServerTimes': {}});
 490                                 return;
 491                         }
 492                 } else {
 493                         message = "<" + rcnick() + "> " + input;
 494                 }
 495
 496                 var m = {'Text': message, 'ServerTimes': {}};
 497                 rcaddmessagetohistory(m);
 498                 rcsend(m.UI, m);
 499         }
 500
 501         function rckeydown(event) {
 502                 if (event.keyCode == 13) {
 503                         if (document.input.say.value) {
 504                                 rcinput(document.input.say.value);
 505                         }
 506                         document.input.say.value = "";
 507                         return false;
 508                 }
 509         }
 510
 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
 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;
 541                 }
 542         }
 543   //--><!]]></script>
 544
 545 </head>
 546
 547 <body onload="rcstart()">
 548         <div id="container">
 549                 <div class="banner">(You are using <a href="https://github.com/chkno/reliable-chat">Reliable Chat</a>)</div>
 550                 <div id="history"></div>
 551                 <div class="expandingArea" style="visibility: hidden">
 552                         <pre><span id="historypad"></span><br></pre>
 553                 </div>
 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>
 561                 <div id="client">
 562                         <div id="input">
 563                                 <form name="input" onsubmit="return false" autocomplete="off">
 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>
 568                                 </form></div>
 569                         <div id="status"></div>
 570                 </div>
 571         </div>
 572 </body>
 573 </html>