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                         //}
  65
  66                         // The messages will go here.
  67                         let msgs_div_name = "ctdl_msgs_" + randomString(5);
  68                         document.getElementById(target_div).innerHTML += "<div id=\"" + msgs_div_name + "\"> </div>" ;
  69
  70
  71                         if (lt_msg == 9999999999) {
  72                                 new_new_div_name = randomString(5);
  73                                 if (msgs.length <= 0) {
  74                                         newgt = gt_msg;
  75                                 }
  76                                 else {
  77                                         newgt = msgs[msgs.length-1];
  78                                 }
  79                                 document.getElementById(target_div).innerHTML +=
  80                                         "<div id=\"" + new_new_div_name + "\">" +
  81                                         "<div class=\"ctdl-forum-nav\">" +
  82                                         "<a href=\"javascript:forum_readmessages('" + new_new_div_name + "', " + newgt + ", 9999999999);\">" +
  83                                         "<i class=\"fa fa-arrow-circle-down\"></i>&nbsp;&nbsp;" +
  84                                         _("Newer posts") + "&nbsp;&nbsp;<i class=\"fa fa-arrow-circle-down\"></a></div></div>" ;
  85                         }
  86
  87                         // Now figure out where to scroll to after rendering.
  88                         if (gt_msg > 0) {
  89                                 scroll_to = msgs[0];
  90                         }
  91                         else if (lt_msg < 9999999999) {
  92                                 scroll_to = msgs[msgs.length-1];
  93                         }
  94                         else if ( (logged_in) && (gt_msg == 0) && (lt_msg == 9999999999) ) {
  95                                 scroll_to = msgs[msgs.length-1];
  96                         }
  97                         else {
  98                                 scroll_to = msgs[0];            // FIXME this is too naive
  99                         }
 100
 101                         // Render the individual messages in the divs
 102                         forum_render_messages(msgs, msgs_div_name, scroll_to)
 103                 }
 104                 else {
 105                         // if xhr fails, this will make the link reappear so the user can try again
 106                         document.getElementById(target_div).innerHTML = original_text;
 107                 }
 108         }
 109         fetch_msg_list();
 110 }
 111
 112
 113 // Render a range of messages into the specified prefix
 114 function forum_render_messages(message_numbers, msgs_div_name, scroll_to) {
 115
 116         // Build an array of Promises and then wait for them all to resolve.
 117         let num_msgs = message_numbers.length;
 118         let msg_promises = Array.apply(null, Array(num_msgs));
 119         for (i=0; i<num_msgs; ++i) {
 120                 msg_promises[i] = fetch("/ctdl/r/" + escapeHTMLURI(current_room) + "/" + message_numbers[i] + "/json")
 121                         .then((response) => response.json());
 122         }
 123
 124         // Here is the async function that waits for all the messages to be loaded, and then renders them.
 125         fetch_msg_list = async() => {
 126                 document.body.style.cursor = "wait";
 127                 await Promise.all(msg_promises);
 128                 document.body.style.cursor = "default";
 129
 130                 // At this point all of the Promises are resolved and we can render.
 131                 // Note: "let" keeps "i" in scope even through the .then scope
 132                 for (let i=0; i<num_msgs; ++i) {
 133                         msg_promises[i].then((one_message) => {
 134                                 document.getElementById(msgs_div_name).innerHTML +=
 135                                         forum_render_one(message_numbers[i], one_message);
 136                         });
 137                         //if (msgnum == scroll_to) {
 138                                 //document.getElementById(prefix+msgnum).scrollIntoView({behavior: "smooth", block: "start", inline: "nearest"});
 139                         //}
 140                 }
 141         }
 142
 143         fetch_msg_list();
 144 }
 145
 146
 147 // 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.
 148 function forum_render_one(msgnum, msg) {
 149
 150         mdiv = randomString(10);                                        // div name for this message
 151
 152         outmsg =
 153           "<div id=\"" + mdiv + "\">"                                   // begin message div
 154         + "<div class=\"ctdl-msg-wrapper\">"                            // begin message wrapper
 155         + "<div class=\"ctdl-avatar\">"                                 // begin avatar
 156         + "<img src=\"/ctdl/u/" + msg.from + "/userpic\" width=\"32\" "
 157         + "onerror=\"this.parentNode.innerHTML='&lt;i class=&quot;fa fa-user-circle fa-2x&quot;&gt;&lt;/i&gt; '\">"
 158         + "</div>"                                                      // end avatar
 159         + "<div class=\"ctdl-msg-content\">"                            // begin content
 160         + "<div class=\"ctdl-msg-header\">"                             // begin header
 161         + "<span class=\"ctdl-msg-header-info\">"                       // begin header info on left side
 162         + "<span class=\"ctdl-username\"><a href=\"#\">"                // FIXME link to user profile
 163         + msg.from
 164         + "</a></span>"                                                 // end username
 165         + "<span class=\"ctdl-msgdate\">"
 166         + msg.time
 167         + "</span>"                                                     // end msgdate
 168         + "</span>"                                                     // end header info on left side
 169         + "<span class=\"ctdl-msg-header-buttons\">"                    // begin buttons on right side
 170
 171         + "<span class=\"ctdl-msg-button\">"                            // Reply
 172         + "<a href=\"javascript:open_reply_box('"+mdiv+"',false,'"+msg.wefw+"','"+msg.msgn+"');\">"
 173         + "<i class=\"fa fa-reply\"></i> "
 174         + _("Reply")
 175         + "</a></span>"
 176
 177         + "<span class=\"ctdl-msg-button\">"                            // ReplyQuoted
 178         + "<a href=\"javascript:open_reply_box('"+mdiv+"',true,'"+msg.wefw+"','"+msg.msgn+"');\">"
 179         + "<i class=\"fa fa-comment\"></i> "
 180         + _("ReplyQuoted")
 181         + "</a></span>"
 182
 183         + "<span class=\"ctdl-msg-button\"><a href=\"#\">"              // Delete , show only with permission FIXME
 184         + "<i class=\"fa fa-trash\"></i> "
 185         + _("Delete")
 186         + "</a></span>"
 187
 188         + "</span>";                                                    // end buttons on right side
 189         if (msg.subj) {
 190                 outmsg +=
 191                 "<br><span class=\"ctdl-msgsubject\">" + msg.subj + "</span>";
 192         }
 193         outmsg +=
 194           "</div><br>"                                                  // end header
 195         + "<div class=\"ctdl-msg-body\">"                               // begin body
 196         + msg.text
 197         + "</div>"                                                      // end body
 198         + "</div>"                                                      // end content
 199         + "</div>"                                                      // end wrapper
 200         + "</div>"                                                      // end message div
 201         ;
 202
 203         return(outmsg);
 204 }
 205
 206
 207 // Compose a references string using existing references plus the message being replied to
 208 function compose_references(references, msgid) {
 209         if (references.includes("@")) {
 210                 refs = references + "|";
 211         }
 212         else {
 213                 refs = "";
 214         }
 215         refs += msgid;
 216
 217         // If the resulting string is too big, we can trim it here
 218         while (refs.length > 900) {
 219                 r = refs.split("|");
 220                 r.splice(1,1);          // remove the second element so we keep the root
 221                 refs = r.join("|");
 222         }
 223         return refs;
 224 }
 225
 226
 227 // Open a reply box directly below a specific message
 228 function open_reply_box(parent_div, is_quoted, references, msgid) {
 229         let new_div = document.createElement("div");
 230         let new_div_name = randomString(10);
 231         new_div.id = new_div_name;
 232
 233         document.getElementById(parent_div).append(new_div);
 234
 235         replybox =
 236           "<div class=\"ctdl-msg-wrapper ctdl-msg-reply\">"             // begin message wrapper
 237         + "<div class=\"ctdl-avatar\">"                                 // begin avatar
 238         + "<img src=\"/ctdl/u/" + "FIXME my name" + "/userpic\" width=\"32\" "
 239         + "onerror=\"this.parentNode.innerHTML='&lt;i class=&quot;fa fa-user-circle fa-2x&quot;&gt;&lt;/i&gt; '\">"
 240         + "</div>"                                                      // end avatar
 241         + "<div class=\"ctdl-msg-content\">"                            // begin content
 242         + "<div class=\"ctdl-msg-header\">"                             // begin header
 243         + "<span class=\"ctdl-msg-header-info\">"                       // begin header info on left side
 244         + "<span class=\"ctdl-username\"><a href=\"#\">"                // FIXME link to user profile
 245         + "FIXME my name"
 246         + "</a></span>"                                                 // end username
 247         + "<span class=\"ctdl-msgdate\">"
 248         + "FIXME now time"
 249         + "</span>"                                                     // end msgdate
 250         + "</span>"                                                     // end header info on left side
 251         + "<span class=\"ctdl-msg-header-buttons\">"                    // begin buttons on right side
 252
 253         + "<span class=\"ctdl-msg-button\">"                            // bold button
 254         + "<a href=\"javascript:void(0)\" onclick=\"forum_format('bold')\">"
 255         + "<i class=\"fa fa-bold fa-fw\"></i>"
 256         + "</a></span>"
 257
 258         + "<span class=\"ctdl-msg-button\">"                            // italic button
 259         + "<a href=\"javascript:void(0)\" onclick=\"forum_format('italic')\">"
 260         + "<i class=\"fa fa-italic fa-fw\"></i>"
 261         + "</a></span>"
 262
 263         + "<span class=\"ctdl-msg-button\">"                            // list button
 264         + "<a href=\"javascript:void(0)\" onclick=\"forum_format('insertunorderedlist')\">"
 265         + "<i class=\"fa fa-list fa-fw\"></i>"
 266         + "</a></span>"
 267
 268         + "<span class=\"ctdl-msg-button\">"                            // link button
 269         + "<a href=\"javascript:void(0)\" onclick=\"forum_display_urlbox()\">"
 270         + "<i class=\"fa fa-link fa-fw\"></i>"
 271         + "</a></span>"
 272
 273         + "</span>";                                                    // end buttons on right side
 274         //if (msg.subj) {
 275                 //replybox +=
 276                 //"<br><span id=\"ctdl-subject\" class=\"ctdl-msgsubject\">" + "FIXME subject" + "</span>";
 277         //}
 278         //else {                                                                // hidden filed for empty subject
 279                 replybox += "<span id=\"ctdl-subject\" style=\"display:none\"></span>";
 280         //}
 281         replybox +=
 282           "</div><br>"                                                  // end header
 283
 284         + "<span id=\"ctdl-replyreferences\" style=\"display:none\">"   // hidden field for references
 285         + compose_references(references,msgid) + "</span>"
 286                                                                         // begin body
 287         + "<div class=\"ctdl-msg-body\" id=\"ctdl-editor-body\" style=\"padding:5px;\" contenteditable=\"true\">"
 288         + "\n"                                                          // empty initial content
 289         + "</div>"                                                      // end body
 290
 291         + "<div class=\"ctdl-msg-header\">"                             // begin footer
 292         + "<span class=\"ctdl-msg-header-info\">"                       // begin footer info on left side
 293         + "x"
 294         + "</span>"                                                     // end footer info on left side
 295         + "<span class=\"ctdl-msg-header-buttons\">"                    // begin buttons on right side
 296
 297         + "<span class=\"ctdl-msg-button\"><a href=\"javascript:forum_save_message('" + new_div_name + "');\">"
 298         + "<i class=\"fa fa-check\" style=\"color:green\"></i> "        // save button
 299         + _("Post message")
 300         + "</a></span>"
 301
 302         + "<span class=\"ctdl-msg-button\"><a href=\"javascript:forum_cancel_post('" +  new_div_name + "');\">"
 303         + "<i class=\"fa fa-trash\" style=\"color:red\"></i> "          // cancel button
 304         + _("Cancel")
 305         + "</a></span>"
 306
 307         + "</span>"                                                     // end buttons on right side
 308         + "</div><br>"                                                  // end footer
 309
 310
 311         + "</div>"                                                      // end content
 312         + "</div>"                                                      // end wrapper
 313
 314         + "<div id=\"forum_url_entry_box\" class=\"w3-modal\">"         // begin URL entry modal
 315         + "     <div class=\"w3-modal-content w3-animate-top w3-card-4\">"
 316         + "             <header class=\"w3-container w3-blue\"> "
 317         + "                     <p><span>URL:</span></p>"
 318         + "             </header>"
 319         + "             <div class=\"w3-container w3-blue\">"
 320         + "                     <input id=\"forum_txtFormatUrl\" placeholder=\"http://\" style=\"width:100%\">"
 321         + "             </div>"
 322         + "             <footer class=\"w3-container w3-blue\">"
 323         + "                     <p><span class=\"ctdl-msg-button\"><a href=\"javascript:forum_close_urlbox(true);\">"
 324         + "                             <i class=\"fa fa-check\" style=\"color:green\"></i> "
 325         +                               _("Save")
 326         +                       "</a></span>"
 327         + "                     <span class=\"ctdl-msg-button\"><a href=\"javascript:forum_close_urlbox(false);\">"
 328         + "                             <i class=\"fa fa-trash\" style=\"color:red\"></i> "
 329         +                               _("Cancel")
 330         +                       "</a></span></p>"
 331         + "             </footer>"
 332         + "             </div>"
 333         + "     </div>"
 334         + "     <input id=\"forum_selection_start\" style=\"display:none\"></input>"    // hidden fields
 335         + "     <input id=\"forum_selection_end\" style=\"display:none\"></input>"      // to store selection range
 336         + "</div>"                                                      // end URL entry modal
 337         ;
 338
 339         document.getElementById(new_div_name).innerHTML = replybox;
 340         document.getElementById(new_div_name).scrollIntoView({behavior: "smooth", block: "end", inline: "nearest"});
 341
 342         // These actions must happen *after* the initial render loop completes.
 343         setTimeout(function() {
 344                 var tag = document.getElementById("ctdl-editor-body");
 345                 tag.focus();                                            // sets the focus
 346                 window.getSelection().collapse(tag.firstChild, 0);      // positions the cursor
 347         }, 0);
 348 }
 349
 350
 351 // Abort a message post (it simply destroys the div)
 352 function forum_cancel_post(div_name) {
 353         document.getElementById(div_name).outerHTML = "";               // make it cease to exist
 354 }
 355
 356
 357 // Save the posted message to the server
 358 function forum_save_message(editor_div_name) {
 359
 360         document.body.style.cursor = "wait";
 361         wefw = (document.getElementById("ctdl-replyreferences").innerHTML).replaceAll("|","!"); // references (if present)
 362         subj = document.getElementById("ctdl-subject").innerHTML;                               // subject (if present)
 363
 364         url = "/ctdl/r/" + escapeHTMLURI(current_room)
 365                 + "/dummy_name_for_new_message"
 366                 + "?wefw=" + wefw
 367                 + "&subj=" + subj
 368         boundary = randomString(20);
 369         body_text =
 370                 "--" + boundary + "\r\n"
 371                 + "Content-type: text/html\r\n"
 372                 + "Content-transfer-encoding: quoted-printable\r\n"
 373                 + "\r\n"
 374                 + quoted_printable_encode(
 375                         "<html><body>" + document.getElementById("ctdl-editor-body").innerHTML + "</body></html>"
 376                 ) + "\r\n"
 377                 + "--" + boundary + "--\r\n"
 378         ;
 379
 380         var request = new XMLHttpRequest();
 381         request.open("PUT", url, true);
 382         request.setRequestHeader("Content-type", "multipart/mixed; boundary=\"" + boundary + "\"");
 383         request.onreadystatechange = function() {
 384                 if (request.readyState == 4) {
 385                         document.body.style.cursor = "default";
 386                         if (Math.trunc(request.status / 100) == 2) {
 387                                 headers = request.getAllResponseHeaders().split("\n");
 388                                 for (var i in headers) {
 389                                         if (headers[i].startsWith("etag: ")) {
 390                                                 new_msg_num = headers[i].split(" ")[1];
 391                                         }
 392                                 }
 393
 394                                 // change the name of the editor div to make it look like a regular message...
 395                                 document.getElementById(editor_div_name).innerHTML = "fixme render message " + new_msg_num;
 396                         }
 397                         else {
 398                                 error_message = request.responseText;
 399                                 if (error_message.length == 0) {
 400                                         error_message = _("An error has occurred.");
 401                                 }
 402                                 alert(error_message);                                           // editor remains open
 403                         }
 404                 }
 405         };
 406         request.send(body_text);
 407 }
 408
 409
 410 // Bold, italics, etc.
 411 function forum_format(command, value) {
 412         document.execCommand(command, false, value);
 413 }
 414
 415
 416 // Make the URL entry box appear.
 417 // When the user clicks into the URL box it will make the previous focus disappear, so we have to save it.
 418 function forum_display_urlbox() {
 419         document.getElementById("forum_selection_start").value = window.getSelection().anchorOffset;
 420         document.getElementById("forum_selection_end").value = window.getSelection().focusOffset;
 421         document.getElementById("forum_url_entry_box").style.display = "block";
 422 }
 423
 424
 425 // When the URL box is closed, this gets called.  do_save is true for Save, false for Cancel.
 426 function forum_close_urlbox(do_save) {
 427         if (do_save) {
 428                 var tag = document.getElementById("ctdl-editor-body");
 429                 var start_replace = document.getElementById("forum_selection_start").value;     // use saved selection range
 430                 var end_replace = document.getElementById("forum_selection_end").value;
 431                 new_text = tag.innerHTML.substring(0, start_replace)
 432                         + "<a href=\"" + document.getElementById("forum_txtFormatUrl").value + "\">"
 433                         + tag.innerHTML.substring(start_replace, end_replace)
 434                         + "</a>"
 435                         + tag.innerHTML.substring(end_replace);
 436                 tag.innerHTML = new_text;
 437         }
 438         document.getElementById("forum_txtFormatUrl").value = "";                               // clear url box for next time
 439         document.getElementById("forum_url_entry_box").style.display = "none";
 440 }