webcit-ng/static/js/view_forum.js

   1 // Copyright (c) 2016-2022 by the citadel.org team
   2 //
   3 // This program is open source software.  It runs great on the
   4 // Linux operating system (and probably elsewhere).  You can use,
   5 // copy, and run it under the terms of the GNU General Public
   6 // License version 3.  Richard Stallman is an asshole communist.
   7 //
   8 // This program is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 // GNU General Public License for more details.
  12
  13
  14 // Forum view (flat)
  15 function forum_readmessages(target_div_name, gt_msg, lt_msg) {
  16         target_div = document.getElementById(target_div_name);
  17         original_text = target_div.innerHTML;                                   // in case we need to replace it after an error
  18         target_div.innerHTML = ""
  19
  20         if (lt_msg < 9999999999) {
  21                 url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/msgs.lt|" + lt_msg;
  22         }
  23         else {
  24                 url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/msgs.gt|" + gt_msg;
  25         }
  26
  27         fetch_msg_list = async() => {
  28                 response = await fetch(url);
  29                 msgs = await(response.json());
  30                 if (response.ok) {
  31                         target_div.innerHTML = "" ;
  32
  33                         // If we were given an explicit starting point, by all means start there.
  34                         // Note that we don't have to remove them from the array because we did a 'msgs gt|xxx' command to Citadel.
  35                         if (gt_msg > 0) {
  36                                 msgs = msgs.slice(0, messages_per_page);
  37                         }
  38
  39                         // Otherwise, show us the last 20 messages
  40                         else {
  41                                 if (msgs.length > messages_per_page) {
  42                                         msgs = msgs.slice(msgs.length - messages_per_page);
  43                                 }
  44                                 new_old_div_name = randomString();
  45                                 if (msgs.length < 1) {
  46                                         newlt = lt_msg;
  47                                 }
  48                                 else {
  49                                         newlt = msgs[0];
  50                                 }
  51                                 target_div.innerHTML +=
  52                                         "<div id=\"" + new_old_div_name + "\">" +
  53                                         "<div class=\"ctdl-forum-nav\">" +
  54                                         "<a href=\"javascript:forum_readmessages('" + new_old_div_name + "', 0, " + newlt + ");\">" +
  55                                         "<i class=\"fa fa-arrow-circle-up\"></i>&nbsp;&nbsp;" +
  56                                         _("Older posts") + "&nbsp;&nbsp;<i class=\"fa fa-arrow-circle-up\"></a></div></div></a></div></div>" ;
  57                         }
  58
  59                         // The messages will go here.
  60                         let msgs_div_name = randomString();
  61                         target_div.innerHTML += "<div id=\"" + msgs_div_name + "\"> </div>" ;
  62
  63                         if (lt_msg == 9999999999) {
  64                                 new_new_div_name = randomString();
  65                                 if (msgs.length <= 0) {
  66                                         newgt = gt_msg;
  67                                 }
  68                                 else {
  69                                         newgt = msgs[msgs.length-1];
  70                                 }
  71                                 target_div.innerHTML +=
  72                                         "<div id=\"" + new_new_div_name + "\">" +
  73                                         "<div class=\"ctdl-forum-nav\">" +
  74                                         "<a href=\"javascript:forum_readmessages('" + new_new_div_name + "', " + newgt + ", 9999999999);\">" +
  75                                         "<i class=\"fa fa-arrow-circle-down\"></i>&nbsp;&nbsp;" +
  76                                         _("Newer posts") + "&nbsp;&nbsp;<i class=\"fa fa-arrow-circle-down\"></a></div></div>" ;
  77                         }
  78
  79                         // Now figure out where to scroll to after rendering.
  80                         if (gt_msg > 0) {
  81                                 scroll_to = msgs[0];
  82                         }
  83                         else if (lt_msg < 9999999999) {
  84                                 scroll_to = msgs[msgs.length-1];
  85                         }
  86                         else if ( (logged_in) && (gt_msg == 0) && (lt_msg == 9999999999) ) {
  87                                 scroll_to = msgs[msgs.length-1];
  88                         }
  89                         else {
  90                                 scroll_to = msgs[0];            // FIXME this is too naive
  91                         }
  92
  93                         // Render the individual messages in the divs
  94                         forum_render_messages(msgs, msgs_div_name, scroll_to)
  95                 }
  96                 else {
  97                         // if xhr fails, this will make the link reappear so the user can try again
  98                         target_div.innerHTML = original_text;
  99                 }
 100         }
 101         fetch_msg_list();
 102 }
 103
 104
 105 // Render a range of messages into the specified target div
 106 function forum_render_messages(message_numbers, msgs_div_name, scroll_to) {
 107
 108         // Build an array of Promises and then wait for them all to resolve.
 109         let num_msgs = message_numbers.length;
 110         let msg_promises = Array.apply(null, Array(num_msgs));
 111         for (i=0; i<num_msgs; ++i) {
 112                 msg_promises[i] = fetch("/ctdl/r/" + escapeHTMLURI(current_room) + "/" + message_numbers[i] + "/json")
 113                         .then(response => response.json())
 114                         .catch((error) => {
 115                                 response => null;
 116                                 console.error('Error: ', error);
 117                         })
 118                 ;
 119         }
 120
 121         // Here is the async function that waits for all the messages to be loaded, and then renders them.
 122         fetch_msg_list = async() => {
 123                 document.body.style.cursor = "wait";
 124                 activate_loading_modal();
 125                 await Promise.all(msg_promises);
 126                 deactivate_loading_modal();
 127                 document.body.style.cursor = "default";
 128
 129                 // At this point all of the Promises are resolved and we can render.
 130                 // Note: "let" keeps "i" in scope even through the .then scope
 131                 let scroll_to_div = null;
 132                 for (let i=0; i<num_msgs; ++i) {
 133                         msg_promises[i].then((one_message) => {
 134                                 let new_msg_div = forum_render_one(one_message, null);
 135                                 document.getElementById(msgs_div_name).append(new_msg_div);
 136                                 if (message_numbers[i] == scroll_to) {
 137                                         scroll_to_div = new_msg_div;
 138                                 }
 139                                 if (i == num_msgs - 1) {
 140                                         scroll_to_div.scrollIntoView({behavior: "smooth", block: "start", inline: "nearest"});
 141                                 }
 142                         });
 143                 }
 144         }
 145
 146         fetch_msg_list();
 147 }
 148
 149
 150 // Render a message.  Returns a div object.
 151 function forum_render_one(msg, existing_div) {
 152         let div = null;
 153         if (existing_div != null) {                                             // If an existing div was supplied, render into it
 154                 div = existing_div;
 155         }
 156         else {                                                                  // Otherwise, create a new one
 157                 div = document.createElement("div");
 158         }
 159
 160         mdiv = randomString();                                                  // Give the div a new name
 161         div.id = mdiv;
 162
 163         try {
 164                 outmsg =
 165                   "<div class=\"ctdl-msg-wrapper\">"                            // begin message wrapper
 166                 + "<div class=\"ctdl-avatar\">"                                 // begin avatar
 167                 + "<img src=\"/ctdl/u/" + msg.from + "/userpic\" width=\"32\" "
 168                 + "onerror=\"this.parentNode.innerHTML='&lt;i class=&quot;fa fa-user-circle fa-2x&quot;&gt;&lt;/i&gt; '\">"
 169                 + "</div>"                                                      // end avatar
 170                 + "<div class=\"ctdl-msg-content\">"                            // begin content
 171                 + "<div class=\"ctdl-msg-header\">"                             // begin header
 172                 + "<span class=\"ctdl-msg-header-info\">"                       // begin header info on left side
 173                 + "<span class=\"ctdl-username\"><a href=\"#\">"                // FIXME link to user profile
 174                 + msg.from
 175                 + "</a></span>"                                                 // end username
 176                 + "<span class=\"ctdl-msgdate\">"
 177                 + convertTimestamp(msg.time)
 178                 + "</span>"                                                     // end msgdate
 179                 + "</span>"                                                     // end header info on left side
 180                 + "<span class=\"ctdl-msg-header-buttons\">"                    // begin buttons on right side
 181
 182                 + "<span class=\"ctdl-msg-button\">"                            // Reply
 183                 + "<a href=\"javascript:open_reply_box('"+mdiv+"',false,'"+msg.wefw+"','"+msg.msgn+"');\">"
 184                 + "<i class=\"fa fa-reply\"></i> "
 185                 + _("Reply")
 186                 + "</a></span>"
 187
 188                 + "<span class=\"ctdl-msg-button\">"                            // ReplyQuoted
 189                 + "<a href=\"javascript:open_reply_box('"+mdiv+"',true,'"+msg.wefw+"','"+msg.msgn+"');\">"
 190                 + "<i class=\"fa fa-comment\"></i> "
 191                 + _("ReplyQuoted")
 192                 + "</a></span>"
 193
 194                 + "<span class=\"ctdl-msg-button\"><a href=\"#\">"              // Delete , show only with permission FIXME
 195                 + "<i class=\"fa fa-trash\"></i> "
 196                 + _("Delete")
 197                 + "</a></span>"
 198
 199                 + "</span>";                                                    // end buttons on right side
 200                 if (msg.subj) {
 201                         outmsg +=
 202                         "<br><span class=\"ctdl-msgsubject\">" + msg.subj + "</span>";
 203                 }
 204                 outmsg +=
 205                   "</div><br>"                                                  // end header
 206                 + "<div class=\"ctdl-msg-body\">"                               // begin body
 207                 + msg.text
 208                 + "</div>"                                                      // end body
 209                 + "</div>"                                                      // end content
 210                 + "</div>"                                                      // end wrapper
 211                 ;
 212         }
 213         catch(err) {
 214                 outmsg = "<div class=\"ctdl-msg-wrapper\">" + err.message + "</div>";
 215         }
 216
 217         div.innerHTML = outmsg;
 218         return(div);
 219 }
 220
 221
 222 // Compose a references string using existing references plus the message being replied to
 223 function compose_references(references, msgid) {
 224         if (references.includes("@")) {
 225                 refs = references + "|";
 226         }
 227         else {
 228                 refs = "";
 229         }
 230         refs += msgid;
 231
 232         // If the resulting string is too big, we can trim it here
 233         while (refs.length > 900) {
 234                 r = refs.split("|");
 235                 r.splice(1,1);          // remove the second element so we keep the root
 236                 refs = r.join("|");
 237         }
 238         return refs;
 239 }
 240
 241
 242 // Open a reply box directly below a specific message
 243 function open_reply_box(parent_div, is_quoted, references, msgid) {
 244         let new_div = document.createElement("div");
 245         let new_div_name = randomString();
 246         new_div.id = new_div_name;
 247
 248         document.getElementById(parent_div).append(new_div);
 249
 250         replybox =
 251           "<div class=\"ctdl-msg-wrapper ctdl-msg-reply\">"             // begin message wrapper
 252         + "<div class=\"ctdl-avatar\">"                                 // begin avatar
 253         + "<img src=\"/ctdl/u/" + "FIXME my name" + "/userpic\" width=\"32\" "
 254         + "onerror=\"this.parentNode.innerHTML='&lt;i class=&quot;fa fa-user-circle fa-2x&quot;&gt;&lt;/i&gt; '\">"
 255         + "</div>"                                                      // end avatar
 256         + "<div class=\"ctdl-msg-content\">"                            // begin content
 257         + "<div class=\"ctdl-msg-header\">"                             // begin header
 258         + "<span class=\"ctdl-msg-header-info\">"                       // begin header info on left side
 259         + "<span class=\"ctdl-username\">"
 260         + current_user                                                  // user = me !
 261         + "</span>"
 262         + "<span class=\"ctdl-msgdate\">"
 263         + "FIXME now time " + convertTimestamp(1637714172)
 264         + "</span>"                                                     // end msgdate
 265         + "</span>"                                                     // end header info on left side
 266         + "<span class=\"ctdl-msg-header-buttons\">"                    // begin buttons on right side
 267
 268         + "<span class=\"ctdl-msg-button\">"                            // bold button
 269         + "<a href=\"javascript:void(0)\" onclick=\"forum_format('bold')\">"
 270         + "<i class=\"fa fa-bold fa-fw\"></i>"
 271         + "</a></span>"
 272
 273         + "<span class=\"ctdl-msg-button\">"                            // italic button
 274         + "<a href=\"javascript:void(0)\" onclick=\"forum_format('italic')\">"
 275         + "<i class=\"fa fa-italic fa-fw\"></i>"
 276         + "</a></span>"
 277
 278         + "<span class=\"ctdl-msg-button\">"                            // list button
 279         + "<a href=\"javascript:void(0)\" onclick=\"forum_format('insertunorderedlist')\">"
 280         + "<i class=\"fa fa-list fa-fw\"></i>"
 281         + "</a></span>"
 282
 283         + "<span class=\"ctdl-msg-button\">"                            // link button
 284         + "<a href=\"javascript:void(0)\" onclick=\"forum_display_urlbox()\">"
 285         + "<i class=\"fa fa-link fa-fw\"></i>"
 286         + "</a></span>"
 287
 288         + "</span>";                                                    // end buttons on right side
 289         //if (msg.subj) {
 290                 //replybox +=
 291                 //"<br><span id=\"ctdl-subject\" class=\"ctdl-msgsubject\">" + "FIXME subject" + "</span>";
 292         //}
 293         //else {                                                                // hidden filed for empty subject
 294                 replybox += "<span id=\"ctdl-subject\" style=\"display:none\"></span>";
 295         //}
 296         replybox +=
 297           "</div><br>"                                                  // end header
 298
 299         + "<span id=\"ctdl-replyreferences\" style=\"display:none\">"   // hidden field for references
 300         + compose_references(references,msgid) + "</span>"
 301                                                                         // begin body
 302         + "<div class=\"ctdl-msg-body\" id=\"ctdl-editor-body\" style=\"padding:5px;\" contenteditable=\"true\">"
 303         + "\n"                                                          // empty initial content
 304         + "</div>"                                                      // end body
 305
 306         + "<div class=\"ctdl-msg-header\">"                             // begin footer
 307         + "<span class=\"ctdl-msg-header-info\">"                       // begin footer info on left side
 308         + "x"
 309         + "</span>"                                                     // end footer info on left side
 310         + "<span class=\"ctdl-msg-header-buttons\">"                    // begin buttons on right side
 311
 312         + "<span class=\"ctdl-msg-button\"><a href=\"javascript:forum_save_message('" + new_div_name + "');\">"
 313         + "<i class=\"fa fa-check\" style=\"color:green\"></i> "        // save button
 314         + _("Post message")
 315         + "</a></span>"
 316
 317         + "<span class=\"ctdl-msg-button\"><a href=\"javascript:forum_cancel_post('" +  new_div_name + "');\">"
 318         + "<i class=\"fa fa-trash\" style=\"color:red\"></i> "          // cancel button
 319         + _("Cancel")
 320         + "</a></span>"
 321
 322         + "</span>"                                                     // end buttons on right side
 323         + "</div><br>"                                                  // end footer
 324
 325
 326         + "</div>"                                                      // end content
 327         + "</div>"                                                      // end wrapper
 328
 329         + "<div id=\"forum_url_entry_box\" class=\"w3-modal\">"         // begin URL entry modal
 330         + "     <div class=\"w3-modal-content w3-animate-top w3-card-4\">"
 331         + "             <header class=\"w3-container w3-blue\"> "
 332         + "                     <p><span>URL:</span></p>"
 333         + "             </header>"
 334         + "             <div class=\"w3-container w3-blue\">"
 335         + "                     <input id=\"forum_txtFormatUrl\" placeholder=\"http://\" style=\"width:100%\">"
 336         + "             </div>"
 337         + "             <footer class=\"w3-container w3-blue\">"
 338         + "                     <p><span class=\"ctdl-msg-button\"><a href=\"javascript:forum_close_urlbox(true);\">"
 339         + "                             <i class=\"fa fa-check\" style=\"color:green\"></i> "
 340         +                               _("Save")
 341         +                       "</a></span>"
 342         + "                     <span class=\"ctdl-msg-button\"><a href=\"javascript:forum_close_urlbox(false);\">"
 343         + "                             <i class=\"fa fa-trash\" style=\"color:red\"></i> "
 344         +                               _("Cancel")
 345         +                       "</a></span></p>"
 346         + "             </footer>"
 347         + "             </div>"
 348         + "     </div>"
 349         + "     <input id=\"forum_selection_start\" style=\"display:none\"></input>"    // hidden fields
 350         + "     <input id=\"forum_selection_end\" style=\"display:none\"></input>"      // to store selection range
 351         + "</div>"                                                      // end URL entry modal
 352         ;
 353
 354         document.getElementById(new_div_name).innerHTML = replybox;
 355         document.getElementById(new_div_name).scrollIntoView({behavior: "smooth", block: "end", inline: "nearest"});
 356
 357         // These actions must happen *after* the initial render loop completes.
 358         setTimeout(function() {
 359                 var tag = document.getElementById("ctdl-editor-body");
 360                 tag.focus();                                            // sets the focus
 361                 window.getSelection().collapse(tag.firstChild, 0);      // positions the cursor
 362         }, 0);
 363 }
 364
 365
 366 // Abort a message post (it simply destroys the div)
 367 function forum_cancel_post(div_name) {
 368         document.getElementById(div_name).outerHTML = "";               // make it cease to exist
 369 }
 370
 371
 372 // Save the posted message to the server
 373 function forum_save_message(editor_div_name) {
 374
 375         document.body.style.cursor = "wait";
 376         wefw = (document.getElementById("ctdl-replyreferences").innerHTML).replaceAll("|","!"); // references (if present)
 377         subj = document.getElementById("ctdl-subject").innerHTML;                               // subject (if present)
 378
 379         url = "/ctdl/r/" + escapeHTMLURI(current_room)
 380                 + "/dummy_name_for_new_message"
 381                 + "?wefw=" + wefw
 382                 + "&subj=" + subj
 383         boundary = randomString();
 384         body_text =
 385                 "--" + boundary + "\r\n"
 386                 + "Content-type: text/html\r\n"
 387                 + "Content-transfer-encoding: quoted-printable\r\n"
 388                 + "\r\n"
 389                 + quoted_printable_encode(
 390                         "<html><body>" + document.getElementById("ctdl-editor-body").innerHTML + "</body></html>"
 391                 ) + "\r\n"
 392                 + "--" + boundary + "--\r\n"
 393         ;
 394
 395         var request = new XMLHttpRequest();
 396         request.open("PUT", url, true);
 397         request.setRequestHeader("Content-type", "multipart/mixed; boundary=\"" + boundary + "\"");
 398         request.onreadystatechange = function() {
 399                 if (request.readyState == 4) {
 400                         document.body.style.cursor = "default";
 401                         if (Math.trunc(request.status / 100) == 2) {
 402                                 headers = request.getAllResponseHeaders().split("\n");
 403                                 for (var i in headers) {
 404                                         if (headers[i].startsWith("etag: ")) {
 405                                                 new_msg_num = headers[i].split(" ")[1];
 406                                         }
 407                                 }
 408
 409
 410
 411
 412                                 // change the name of the editor div to make it look like a regular message...
 413                                 // document.getElementById(editor_div_name).innerHTML = "FIXME render message " + new_msg_num;
 414
 415                                 // MAKE WAY, HERE IT IS
 416
 417                                 replace_editor_with_final_message = async() => {
 418                                         response = await fetch("/ctdl/r/" + escapeHTMLURI(current_room) + "/" + new_msg_num + "/json");
 419                                         if (response.ok) {
 420                                                 newly_posted_message = await(response.json());
 421                                                 forum_render_one(newly_posted_message, document.getElementById(editor_div_name));
 422                                         }
 423                                 }
 424                                 replace_editor_with_final_message();
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434                         }
 435                         else {
 436                                 error_message = request.responseText;
 437                                 if (error_message.length == 0) {
 438                                         error_message = _("An error has occurred.");
 439                                 }
 440                                 alert(error_message);                                           // editor remains open
 441                         }
 442                 }
 443         };
 444         request.send(body_text);
 445 }
 446
 447
 448 // Bold, italics, etc.
 449 function forum_format(command, value) {
 450         document.execCommand(command, false, value);
 451 }
 452
 453
 454 // Make the URL entry box appear.
 455 // When the user clicks into the URL box it will make the previous focus disappear, so we have to save it.
 456 function forum_display_urlbox() {
 457         document.getElementById("forum_selection_start").value = window.getSelection().anchorOffset;
 458         document.getElementById("forum_selection_end").value = window.getSelection().focusOffset;
 459         document.getElementById("forum_url_entry_box").style.display = "block";
 460 }
 461
 462
 463 // When the URL box is closed, this gets called.  do_save is true for Save, false for Cancel.
 464 function forum_close_urlbox(do_save) {
 465         if (do_save) {
 466                 var tag = document.getElementById("ctdl-editor-body");
 467                 var start_replace = document.getElementById("forum_selection_start").value;     // use saved selection range
 468                 var end_replace = document.getElementById("forum_selection_end").value;
 469                 new_text = tag.innerHTML.substring(0, start_replace)
 470                         + "<a href=\"" + document.getElementById("forum_txtFormatUrl").value + "\">"
 471                         + tag.innerHTML.substring(start_replace, end_replace)
 472                         + "</a>"
 473                         + tag.innerHTML.substring(end_replace);
 474                 tag.innerHTML = new_text;
 475         }
 476         document.getElementById("forum_txtFormatUrl").value = "";                               // clear url box for next time
 477         document.getElementById("forum_url_entry_box").style.display = "none";
 478 }