webcit-ng/static/js/view_forum.js

   1 //
   2 // Copyright (c) 2016-2021 by the citadel.org team
   3 //
   4 // This program is open source software.  It runs great on the
   5 // Linux operating system (and probably elsewhere).  You can use,
   6 // copy, and run it under the terms of the GNU General Public
   7 // License version 3.  Richard Stallman is an asshole communist.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14
  15 // Forum view (flat)
  16 function forum_readmessages(target_div, gt_msg, lt_msg) {
  17         original_text = document.getElementById(target_div).innerHTML;          // in case we need to replace it after an error
  18         document.getElementById(target_div).innerHTML =
  19                 "<div class=\"ctdl-forum-nav\"><i class=\"fas fa-spinner fa-spin\"></i>&nbsp;&nbsp;"
  20                 + _("Loading messages from server, please wait") + "</div>";
  21
  22         if (lt_msg < 9999999999) {
  23                 url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/msgs.lt|" + lt_msg;
  24         }
  25         else {
  26                 url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/msgs.gt|" + gt_msg;
  27         }
  28
  29         fetch_msg_list = async() => {
  30                 response = await fetch(url);
  31                 msgs = await(response.json());
  32                 if (response.ok) {
  33                         document.getElementById(target_div).innerHTML = "" ;
  34
  35                         // If we were given an explicit starting point, by all means start there.
  36                         // Note that we don't have to remove them from the array because we did a 'msgs gt|xxx' command to Citadel.
  37                         if (gt_msg > 0) {
  38                                 msgs = msgs.slice(0, messages_per_page);
  39                         }
  40
  41                         // Otherwise, show us the last 20 messages
  42                         else {
  43                                 if (msgs.length > messages_per_page) {
  44                                         msgs = msgs.slice(msgs.length - messages_per_page);
  45                                 }
  46                                 new_old_div_name = randomString(5);
  47                                 if (msgs.length < 1) {
  48                                         newlt = lt_msg;
  49                                 }
  50                                 else {
  51                                         newlt = msgs[0];
  52                                 }
  53                                 document.getElementById(target_div).innerHTML +=
  54                                         "<div id=\"" + new_old_div_name + "\">" +
  55                                         "<div class=\"ctdl-forum-nav\">" +
  56                                         "<a href=\"javascript:forum_readmessages('" + new_old_div_name + "', 0, " + newlt + ");\">" +
  57                                         "<i class=\"fa fa-arrow-circle-up\"></i>&nbsp;&nbsp;" +
  58                                         _("Older posts") + "&nbsp;&nbsp;<i class=\"fa fa-arrow-circle-up\"></a></div></div></a></div></div>" ;
  59                         }
  60
  61                         // Render an empty div for each message.  We will fill them in later.
  62                         for (var i in msgs) {
  63                                 document.getElementById(target_div).innerHTML += "<div id=\"ctdl_msg_" + msgs[i] + "\"> </div>" ;
  64                                 document.getElementById("ctdl_msg_"+msgs[i]).style.display = "none";
  65                         }
  66                         if (lt_msg == 9999999999) {
  67                                 new_new_div_name = randomString(5);
  68                                 if (msgs.length <= 0) {
  69                                         newgt = gt_msg;
  70                                 }
  71                                 else {
  72                                         newgt = msgs[msgs.length-1];
  73                                 }
  74                                 document.getElementById(target_div).innerHTML +=
  75                                         "<div id=\"" + new_new_div_name + "\">" +
  76                                         "<div class=\"ctdl-forum-nav\">" +
  77                                         "<a href=\"javascript:forum_readmessages('" + new_new_div_name + "', " + newgt + ", 9999999999);\">" +
  78                                         "<i class=\"fa fa-arrow-circle-down\"></i>&nbsp;&nbsp;" +
  79                                         _("Newer posts") + "&nbsp;&nbsp;<i class=\"fa fa-arrow-circle-down\"></a></div></div>" ;
  80                         }
  81
  82                         // Now figure out where to scroll to after rendering.
  83                         if (gt_msg > 0) {
  84                                 scroll_to = msgs[0];
  85                         }
  86                         else if (lt_msg < 9999999999) {
  87                                 scroll_to = msgs[msgs.length-1];
  88                         }
  89                         else if ( (logged_in) && (gt_msg == 0) && (lt_msg == 9999999999) ) {
  90                                 scroll_to = msgs[msgs.length-1];
  91                         }
  92                         else {
  93                                 scroll_to = msgs[0];            // FIXME this is too naive
  94                         }
  95
  96                         // Render the individual messages in the divs
  97                         forum_render_messages(msgs, "ctdl_msg_", scroll_to)
  98                 }
  99                 else {
 100                         // if xhr fails, this will make the link reappear so the user can try again
 101                         document.getElementById(target_div).innerHTML = original_text;
 102                 }
 103         }
 104         fetch_msg_list();
 105 }
 106
 107
 108 // Render a range of messages, with the div prefix specified
 109 function forum_render_messages(msgs, prefix, scroll_to) {
 110         for (i=0; i<msgs.length; ++i) {
 111                 forum_render_one(prefix, msgs[i], scroll_to);
 112         }
 113 }
 114
 115
 116 // We have to put each XHR for forum_render_messages() into its own stack frame, otherwise it jumbles them together.  I don't know why.
 117 function forum_render_one(prefix, msgnum, scroll_to) {
 118
 119         console.log("Rendering message " + msgnum + " in div " + prefix+msgnum);
 120         document.getElementById(prefix+msgnum).innerHTML = "render the stuff here";
 121
 122         document.body.style.cursor = "wait";
 123         fetch_message = async() => {
 124                 response = await fetch("/ctdl/r/" + escapeHTMLURI(current_room) + "/" + msgs[i] + "/json");
 125                 msg = await response.json();
 126                 if (response.ok) {
 127                         outmsg =
 128                           "<div class=\"ctdl-msg-wrapper\">"                            // begin message wrapper
 129                         + "<div class=\"ctdl-avatar\">"                                 // begin avatar
 130                         + "<img src=\"/ctdl/u/" + msg.from + "/userpic\" width=\"32\" "
 131                         + "onerror=\"this.parentNode.innerHTML='&lt;i class=&quot;fa fa-user-circle fa-2x&quot;&gt;&lt;/i&gt; '\">"
 132                         + "</div>"                                                      // end avatar
 133                         + "<div class=\"ctdl-msg-content\">"                            // begin content
 134                         + "<div class=\"ctdl-msg-header\">"                             // begin header
 135                         + "<span class=\"ctdl-msg-header-info\">"                       // begin header info on left side
 136                         + "<span class=\"ctdl-username\"><a href=\"#\">"                // FIXME link to user profile
 137                         + msg.from
 138                         + "</a></span>"                                                 // end username
 139                         + "<span class=\"ctdl-msgdate\">"
 140                         + msg.time
 141                         + "</span>"                                                     // end msgdate
 142                         + "</span>"                                                     // end header info on left side
 143                         + "<span class=\"ctdl-msg-header-buttons\">"                    // begin buttons on right side
 144
 145                         + "<span class=\"ctdl-msg-button\">"                            // Reply
 146                         + "<a href=\"javascript:open_reply_box('"+prefix+"',"+msgnum+",false,'"+msg.wefw+"','"+msg.msgn+"');\">"
 147                         + "<i class=\"fa fa-reply\"></i> "
 148                         + _("Reply")
 149                         + "</a></span>"
 150
 151                         + "<span class=\"ctdl-msg-button\">"                            // ReplyQuoted
 152                         + "<a href=\"javascript:open_reply_box('"+prefix+"',"+msgnum+",true,'"+msg.wefw+"','"+msg.msgn+"');\">"
 153                         + "<i class=\"fa fa-comment\"></i> "
 154                         + _("ReplyQuoted")
 155                         + "</a></span>"
 156
 157                         + "<span class=\"ctdl-msg-button\"><a href=\"#\">"              // Delete , show only with permission FIXME
 158                         + "<i class=\"fa fa-trash\"></i> "
 159                         + _("Delete")
 160                         + "</a></span>"
 161
 162                         + "</span>";                                                    // end buttons on right side
 163                         if (msg.subj) {
 164                                 outmsg +=
 165                                 "<br><span class=\"ctdl-msgsubject\">" + msg.subj + "</span>";
 166                         }
 167                         outmsg +=
 168                           "</div><br>"                                                  // end header
 169                         + "<div class=\"ctdl-msg-body\">"                               // begin body
 170                         + msg.text
 171                         + "</div>"                                                      // end body
 172                         + "</div>"                                                      // end content
 173                         + "</div>"                                                      // end wrapper
 174                         ;
 175                         document.getElementById(prefix+msgnum).innerHTML = outmsg;
 176                 }
 177                 else {
 178                         document.getElementById(prefix+msgnum).innerHTML = "ERROR";
 179                 }
 180                 document.getElementById(prefix+msgnum).style.display  = "inline";
 181                 if (msgnum == scroll_to) {
 182                         document.getElementById(prefix+msgnum).scrollIntoView({behavior: "smooth", block: "start", inline: "nearest"});
 183                         document.body.style.cursor = "default";
 184                 }
 185         }
 186         fetch_message();
 187 }
 188
 189
 190 // Compose a references string using existing references plus the message being replied to
 191 function compose_references(references, msgid) {
 192         if (references.includes("@")) {
 193                 refs = references + "|";
 194         }
 195         else {
 196                 refs = "";
 197         }
 198         refs += msgid;
 199
 200         // If the resulting string is too big, we can trim it here
 201         while (refs.length > 900) {
 202                 r = refs.split("|");
 203                 r.splice(1,1);          // remove the second element so we keep the root
 204                 refs = r.join("|");
 205         }
 206         return refs;
 207 }
 208
 209
 210 // Open a reply box directly below a specific message
 211 function open_reply_box(prefix, msgnum, is_quoted, references, msgid) {
 212         let new_div = document.createElement("div");
 213         let new_div_name = prefix + "reply_to_" + msgnum;
 214         new_div.id = new_div_name;
 215         document.getElementById(prefix+msgnum).append(new_div);
 216
 217         replybox =
 218           "<div class=\"ctdl-msg-wrapper ctdl-msg-reply\">"             // begin message wrapper
 219         + "<div class=\"ctdl-avatar\">"                                 // begin avatar
 220         + "<img src=\"/ctdl/u/" + "FIXME my name" + "/userpic\" width=\"32\" "
 221         + "onerror=\"this.parentNode.innerHTML='&lt;i class=&quot;fa fa-user-circle fa-2x&quot;&gt;&lt;/i&gt; '\">"
 222         + "</div>"                                                      // end avatar
 223         + "<div class=\"ctdl-msg-content\">"                            // begin content
 224         + "<div class=\"ctdl-msg-header\">"                             // begin header
 225         + "<span class=\"ctdl-msg-header-info\">"                       // begin header info on left side
 226         + "<span class=\"ctdl-username\"><a href=\"#\">"                // FIXME link to user profile
 227         + "FIXME my name"
 228         + "</a></span>"                                                 // end username
 229         + "<span class=\"ctdl-msgdate\">"
 230         + "FIXME now time"
 231         + "</span>"                                                     // end msgdate
 232         + "</span>"                                                     // end header info on left side
 233         + "<span class=\"ctdl-msg-header-buttons\">"                    // begin buttons on right side
 234
 235         + "<span class=\"ctdl-msg-button\">"                            // bold button
 236         + "<a href=\"javascript:void(0)\" onclick=\"forum_format('bold')\">"
 237         + "<i class=\"fa fa-bold fa-fw\"></i>"
 238         + "</a></span>"
 239
 240         + "<span class=\"ctdl-msg-button\">"                            // italic button
 241         + "<a href=\"javascript:void(0)\" onclick=\"forum_format('italic')\">"
 242         + "<i class=\"fa fa-italic fa-fw\"></i>"
 243         + "</a></span>"
 244
 245         + "<span class=\"ctdl-msg-button\">"                            // list button
 246         + "<a href=\"javascript:void(0)\" onclick=\"forum_format('insertunorderedlist')\">"
 247         + "<i class=\"fa fa-list fa-fw\"></i>"
 248         + "</a></span>"
 249
 250         + "<span class=\"ctdl-msg-button\">"                            // link button
 251         + "<a href=\"javascript:void(0)\" onclick=\"forum_display_urlbox()\">"
 252         + "<i class=\"fa fa-link fa-fw\"></i>"
 253         + "</a></span>"
 254
 255         + "</span>";                                                    // end buttons on right side
 256         if (msg.subj) {
 257                 replybox +=
 258                 "<br><span id=\"ctdl-subject\" class=\"ctdl-msgsubject\">" + "FIXME subject" + "</span>";
 259         }
 260         else {                                                          // hidden filed for empty subject
 261                 replybox += "<span id=\"ctdl-subject\" style=\"display:none\"></span>";
 262         }
 263         replybox +=
 264           "</div><br>"                                                  // end header
 265
 266         + "<span id=\"ctdl-replyreferences\" style=\"display:none\">"   // hidden field for references
 267         + compose_references(references,msgid) + "</span>"
 268                                                                         // begin body
 269         + "<div class=\"ctdl-msg-body\" id=\"ctdl-editor-body\" style=\"padding:5px;\" contenteditable=\"true\">"
 270         + "\n"                                                          // empty initial content
 271         + "</div>"                                                      // end body
 272
 273         + "<div class=\"ctdl-msg-header\">"                             // begin footer
 274         + "<span class=\"ctdl-msg-header-info\">"                       // begin footer info on left side
 275         + "x"
 276         + "</span>"                                                     // end footer info on left side
 277         + "<span class=\"ctdl-msg-header-buttons\">"                    // begin buttons on right side
 278
 279         + "<span class=\"ctdl-msg-button\"><a href=\"javascript:forum_save_message('" + prefix + "', '" + new_div_name + "');\">"
 280         + "<i class=\"fa fa-check\" style=\"color:green\"></i> "        // save button
 281         + _("Post message")
 282         + "</a></span>"
 283
 284         + "<span class=\"ctdl-msg-button\"><a href=\"javascript:forum_cancel_post('" +  new_div_name + "');\">"
 285         + "<i class=\"fa fa-trash\" style=\"color:red\"></i> "          // cancel button
 286         + _("Cancel")
 287         + "</a></span>"
 288
 289         + "</span>"                                                     // end buttons on right side
 290         + "</div><br>"                                                  // end footer
 291
 292
 293         + "</div>"                                                      // end content
 294         + "</div>"                                                      // end wrapper
 295
 296         + "<div id=\"forum_url_entry_box\" class=\"w3-modal\">"         // begin URL entry modal
 297         + "     <div class=\"w3-modal-content w3-animate-top w3-card-4\">"
 298         + "             <header class=\"w3-container w3-blue\"> "
 299         + "                     <p><span>URL:</span></p>"
 300         + "             </header>"
 301         + "             <div class=\"w3-container w3-blue\">"
 302         + "                     <input id=\"forum_txtFormatUrl\" placeholder=\"http://\" style=\"width:100%\">"
 303         + "             </div>"
 304         + "             <footer class=\"w3-container w3-blue\">"
 305         + "                     <p><span class=\"ctdl-msg-button\"><a href=\"javascript:forum_close_urlbox(true);\">"
 306         + "                             <i class=\"fa fa-check\" style=\"color:green\"></i> "
 307         +                               _("Save")
 308         +                       "</a></span>"
 309         + "                     <span class=\"ctdl-msg-button\"><a href=\"javascript:forum_close_urlbox(false);\">"
 310         + "                             <i class=\"fa fa-trash\" style=\"color:red\"></i> "
 311         +                               _("Cancel")
 312         +                       "</a></span></p>"
 313         + "             </footer>"
 314         + "             </div>"
 315         + "     </div>"
 316         + "     <input id=\"forum_selection_start\" style=\"display:none\"></input>"    // hidden fields
 317         + "     <input id=\"forum_selection_end\" style=\"display:none\"></input>"      // to store selection range
 318         + "</div>"                                                      // end URL entry modal
 319         ;
 320
 321         document.getElementById(new_div_name).innerHTML = replybox;
 322         document.getElementById(new_div_name).scrollIntoView({behavior: "smooth", block: "end", inline: "nearest"});
 323
 324         // These actions must happen *after* the initial render loop completes.
 325         setTimeout(function() {
 326                 var tag = document.getElementById("ctdl-editor-body");
 327                 tag.focus();                                            // sets the focus
 328                 window.getSelection().collapse(tag.firstChild, 0);      // positions the cursor
 329         }, 0);
 330 }
 331
 332
 333 // Abort a message post (it simply destroys the div)
 334 function forum_cancel_post(div_name) {
 335         document.getElementById(div_name).outerHTML = "";               // make it cease to exist
 336 }
 337
 338
 339 // Save the posted message to the server
 340 function forum_save_message(prefix, editor_div_name) {
 341
 342         document.body.style.cursor = "wait";
 343         wefw = (document.getElementById("ctdl-replyreferences").innerHTML).replaceAll("|","!"); // references (if present)
 344         subj = document.getElementById("ctdl-subject").innerHTML;                               // subject (if present)
 345
 346         url = "/ctdl/r/" + escapeHTMLURI(current_room)
 347                 + "/dummy_name_for_new_message"
 348                 + "?wefw=" + wefw
 349                 + "&subj=" + subj
 350         boundary = randomString(20);
 351         body_text =
 352                 "--" + boundary + "\r\n"
 353                 + "Content-type: text/html\r\n"
 354                 + "Content-transfer-encoding: quoted-printable\r\n"
 355                 + "\r\n"
 356                 + quoted_printable_encode(
 357                         "<html><body>" + document.getElementById("ctdl-editor-body").innerHTML + "</body></html>"
 358                 ) + "\r\n"
 359                 + "--" + boundary + "--\r\n"
 360         ;
 361
 362         var request = new XMLHttpRequest();
 363         request.open("PUT", url, true);
 364         request.setRequestHeader("Content-type", "multipart/mixed; boundary=\"" + boundary + "\"");
 365         request.onreadystatechange = function() {
 366                 if (request.readyState == 4) {
 367                         document.body.style.cursor = "default";
 368                         if (Math.trunc(request.status / 100) == 2) {
 369                                 headers = request.getAllResponseHeaders().split("\n");
 370                                 for (var i in headers) {
 371                                         if (headers[i].startsWith("etag: ")) {
 372                                                 new_msg_num = headers[i].split(" ")[1];
 373                                         }
 374                                 }
 375
 376                                 // change the name of the editor div to make it look like a regular message...
 377                                 document.getElementById(editor_div_name).innerHTML = "fixme render message " + new_msg_num;
 378                         }
 379                         else {
 380                                 error_message = request.responseText;
 381                                 if (error_message.length == 0) {
 382                                         error_message = _("An error has occurred.");
 383                                 }
 384                                 alert(error_message);                                           // editor remains open
 385                         }
 386                 }
 387         };
 388         request.send(body_text);
 389 }
 390
 391
 392 // Bold, italics, etc.
 393 function forum_format(command, value) {
 394         document.execCommand(command, false, value);
 395 }
 396
 397
 398 // Make the URL entry box appear.
 399 // When the user clicks into the URL box it will make the previous focus disappear, so we have to save it.
 400 function forum_display_urlbox() {
 401         document.getElementById("forum_selection_start").value = window.getSelection().anchorOffset;
 402         document.getElementById("forum_selection_end").value = window.getSelection().focusOffset;
 403         document.getElementById("forum_url_entry_box").style.display = "block";
 404 }
 405
 406
 407 // When the URL box is closed, this gets called.  do_save is true for Save, false for Cancel.
 408 function forum_close_urlbox(do_save) {
 409         if (do_save) {
 410                 var tag = document.getElementById("ctdl-editor-body");
 411                 var start_replace = document.getElementById("forum_selection_start").value;     // use saved selection range
 412                 var end_replace = document.getElementById("forum_selection_end").value;
 413                 new_text = tag.innerHTML.substring(0, start_replace)
 414                         + "<a href=\"" + document.getElementById("forum_txtFormatUrl").value + "\">"
 415                         + tag.innerHTML.substring(start_replace, end_replace)
 416                         + "</a>"
 417                         + tag.innerHTML.substring(end_replace);
 418                 tag.innerHTML = new_text;
 419         }
 420         document.getElementById("forum_txtFormatUrl").value = "";                               // clear url box for next time
 421         document.getElementById("forum_url_entry_box").style.display = "none";
 422 }