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 //
  17 function forum_readmessages(target_div, gt_msg, lt_msg) {
  18         original_text = document.getElementById(target_div).innerHTML;          // in case we need to replace it after an error
  19         document.getElementById(target_div).innerHTML =
  20                 "<div class=\"ctdl-forum-nav\"><i class=\"fas fa-spinner fa-spin\"></i>&nbsp;&nbsp;"
  21                 + _("Loading messages from server, please wait") + "</div>";
  22
  23         if (lt_msg < 9999999999) {
  24                 url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/msgs.lt|" + lt_msg;
  25         }
  26         else {
  27                 url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/msgs.gt|" + gt_msg;
  28         }
  29
  30         fetch_msg_list = async() => {
  31                 response = await fetch(url);
  32                 msgs = await(response.json());
  33                 if (response.ok) {
  34                         document.getElementById(target_div).innerHTML = "" ;
  35
  36                         // If we were given an explicit starting point, by all means start there.
  37                         // Note that we don't have to remove them from the array because we did a 'msgs gt|xxx' command to Citadel.
  38                         if (gt_msg > 0) {
  39                                 msgs = msgs.slice(0, messages_per_page);
  40                         }
  41
  42                         // Otherwise, show us the last 20 messages
  43                         else {
  44                                 if (msgs.length > messages_per_page) {
  45                                         msgs = msgs.slice(msgs.length - messages_per_page);
  46                                 }
  47                                 new_old_div_name = randomString(5);
  48                                 if (msgs.length < 1) {
  49                                         newlt = lt_msg;
  50                                 }
  51                                 else {
  52                                         newlt = msgs[0];
  53                                 }
  54                                 document.getElementById(target_div).innerHTML +=
  55                                         "<div id=\"" + new_old_div_name + "\">" +
  56                                         "<div class=\"ctdl-forum-nav\">" +
  57                                         "<a href=\"javascript:forum_readmessages('" + new_old_div_name + "', 0, " + newlt + ");\">" +
  58                                         "<i class=\"fa fa-arrow-circle-up\"></i>&nbsp;&nbsp;" +
  59                                         _("Older posts") + "&nbsp;&nbsp;<i class=\"fa fa-arrow-circle-up\"></a></div></div></a></div></div>" ;
  60                         }
  61
  62                         // Render an empty div for each message.  We will fill them in later.
  63                         for (var i in msgs) {
  64                                 document.getElementById(target_div).innerHTML += "<div id=\"ctdl_msg_" + msgs[i] + "\"> </div>" ;
  65                                 document.getElementById("ctdl_msg_"+msgs[i]).style.display = "none";
  66                         }
  67                         if (lt_msg == 9999999999) {
  68                                 new_new_div_name = randomString(5);
  69                                 if (msgs.length <= 0) {
  70                                         newgt = gt_msg;
  71                                 }
  72                                 else {
  73                                         newgt = msgs[msgs.length-1];
  74                                 }
  75                                 document.getElementById(target_div).innerHTML +=
  76                                         "<div id=\"" + new_new_div_name + "\">" +
  77                                         "<div class=\"ctdl-forum-nav\">" +
  78                                         "<a href=\"javascript:forum_readmessages('" + new_new_div_name + "', " + newgt + ", 9999999999);\">" +
  79                                         "<i class=\"fa fa-arrow-circle-down\"></i>&nbsp;&nbsp;" +
  80                                         _("Newer posts") + "&nbsp;&nbsp;<i class=\"fa fa-arrow-circle-down\"></a></div></div>" ;
  81                         }
  82
  83                         // Now figure out where to scroll to after rendering.
  84                         if (gt_msg > 0) {
  85                                 scroll_to = msgs[0];
  86                         }
  87                         else if (lt_msg < 9999999999) {
  88                                 scroll_to = msgs[msgs.length-1];
  89                         }
  90                         else if ( (logged_in) && (gt_msg == 0) && (lt_msg == 9999999999) ) {
  91                                 scroll_to = msgs[msgs.length-1];
  92                         }
  93                         else {
  94                                 scroll_to = msgs[0];            // FIXME this is too naive
  95                         }
  96
  97                         // Render the individual messages in the divs
  98                         forum_render_messages(msgs, "ctdl_msg_", scroll_to)
  99                 }
 100                 else {
 101                         // if xhr fails, this will make the link reappear so the user can try again
 102                         document.getElementById(target_div).innerHTML = original_text;
 103                 }
 104         }
 105         fetch_msg_list();
 106 }
 107
 108
 109 // Render a range of messages, with the div prefix specified
 110 //
 111 function forum_render_messages(msgs, prefix, scroll_to) {
 112         for (i=0; i<msgs.length; ++i) {
 113                 forum_render_one(prefix, msgs[i], scroll_to);
 114         }
 115 }
 116
 117
 118 // 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.
 119 function forum_render_one(prefix, msgnum, scroll_to) {
 120         fetch_message = async() => {
 121                 response = await fetch("/ctdl/r/" + escapeHTMLURI(current_room) + "/" + msgs[i] + "/json");
 122                 msg = await response.json();
 123                 if (response.ok) {
 124                         outmsg =
 125                           "<div class=\"ctdl-msg-wrapper\">"                            // begin message wrapper
 126                         + "<div class=\"ctdl-avatar\">"                                 // begin avatar
 127                         + "<img src=\"/ctdl/u/" + msg.from + "/userpic\" width=\"32\" "
 128                         + "onerror=\"this.parentNode.innerHTML='&lt;i class=&quot;fa fa-user-circle fa-2x&quot;&gt;&lt;/i&gt; '\">"
 129                         + "</div>"                                                      // end avatar
 130                         + "<div class=\"ctdl-msg-content\">"                            // begin content
 131                         + "<div class=\"ctdl-msg-header\">"                             // begin header
 132                         + "<span class=\"ctdl-msg-header-info\">"                       // begin header info on left side
 133                         + "<span class=\"ctdl-username\"><a href=\"#\">"                // FIXME link to user profile
 134                         + msg.from
 135                         + "</a></span>"                                                 // end username
 136                         + "<span class=\"ctdl-msgdate\">"
 137                         + msg.time
 138                         + "</span>"                                                     // end msgdate
 139                         + "</span>"                                                     // end header info on left side
 140                         + "<span class=\"ctdl-msg-header-buttons\">"                    // begin buttons on right side
 141
 142                         + "<span class=\"ctdl-msg-button\">"                            // Reply button FIXME make this work
 143                         + "<a href=\"javascript:open_reply_box('"+prefix+"',"+msgnum+",false);\">"
 144                         + "<i class=\"fa fa-reply\"></i> "
 145                         + _("Reply")
 146                         + "</a></span>"
 147
 148                         + "<span class=\"ctdl-msg-button\">"                            // ReplyQuoted , only show in forums FIXME
 149                         + "<a href=\"javascript:open_reply_box('"+prefix+"',"+msgnum+",true);\">"
 150                         + "<i class=\"fa fa-comment\"></i> "
 151                         + _("ReplyQuoted")
 152                         + "</a></span>"
 153
 154                         + "<span class=\"ctdl-msg-button\"><a href=\"#\">"              // Delete , show only with permission FIXME
 155                         + "<i class=\"fa fa-trash\"></i> "
 156                         + _("Delete")
 157                         + "</a></span>"
 158
 159                         + "</span>";                                                    // end buttons on right side
 160                         if (msg.subj) {
 161                                 outmsg +=
 162                                 "<br><span class=\"ctdl-msgsubject\">" + msg.subj + "</span>";
 163                         }
 164                         outmsg +=
 165                           "</div><br>"                                                  // end header
 166                         + "<div class=\"ctdl-msg-body\">"                               // begin body
 167                         + msg.text
 168                         + "</div>"                                                      // end body
 169                         + "</div>"                                                      // end content
 170                         + "</div>"                                                      // end wrapper
 171                         ;
 172                         document.getElementById(prefix+msgnum).innerHTML = outmsg;
 173                 }
 174                 else {
 175                         document.getElementById(prefix+msgnum).innerHTML = "ERROR";
 176                 }
 177                 document.getElementById(prefix+msgnum).style.display  = "inline";
 178                 if (msgnum == scroll_to) {
 179                         document.getElementById(prefix+msgnum).scrollIntoView({behavior: "smooth", block: "start", inline: "nearest"});
 180                 }
 181         }
 182         fetch_message();
 183 }
 184
 185
 186 // Open a reply box directly below a specific message
 187 function open_reply_box(prefix, msgnum, is_quoted) {
 188         target_div_name = prefix+msgnum;
 189         new_div_name = prefix + "_reply_to_" + msgnum;
 190         document.getElementById(target_div_name).outerHTML += "<div id=\"" + new_div_name + "\">reply box put here</div>";
 191
 192         replybox =
 193           "<div class=\"ctdl-msg-wrapper\">"                            // begin message wrapper
 194         + "<div class=\"ctdl-avatar\">"                                 // begin avatar
 195         + "<img src=\"/ctdl/u/" + "FIXME my name" + "/userpic\" width=\"32\" "
 196         + "onerror=\"this.parentNode.innerHTML='&lt;i class=&quot;fa fa-user-circle fa-2x&quot;&gt;&lt;/i&gt; '\">"
 197         + "</div>"                                                      // end avatar
 198         + "<div class=\"ctdl-msg-content\">"                            // begin content
 199         + "<div class=\"ctdl-msg-header\">"                             // begin header
 200         + "<span class=\"ctdl-msg-header-info\">"                       // begin header info on left side
 201         + "<span class=\"ctdl-username\"><a href=\"#\">"                // FIXME link to user profile
 202         + "FIXME my name"
 203         + "</a></span>"                                                 // end username
 204         + "<span class=\"ctdl-msgdate\">"
 205         + "FIXME now time"
 206         + "</span>"                                                     // end msgdate
 207         + "</span>"                                                     // end header info on left side
 208         + "<span class=\"ctdl-msg-header-buttons\">"                    // begin buttons on right side
 209         + "x"
 210         + "</span>";                                                    // end buttons on right side
 211         if (msg.subj) {
 212                 replybox +=
 213                 "<br><span class=\"ctdl-msgsubject\">" + "FIXME subject" + "</span>";
 214         }
 215         replybox +=
 216           "</div><br>"                                                  // end header
 217
 218
 219         + "<div class=\"ctdl-msg-body\" id=\"ctdl-editor-body\" style=\"padding:5px;\" contenteditable=\"true\">"       // begin body
 220         + "\n"                                                          // empty initial content
 221         + "</div>"                                                      // end body
 222
 223
 224         + "<div class=\"ctdl-msg-header\">"                             // begin footer
 225         + "<span class=\"ctdl-msg-header-info\">"                       // begin footer info on left side
 226         + "x"
 227         + "</span>"                                                     // end footer info on left side
 228         + "<span class=\"ctdl-msg-header-buttons\">"                    // begin buttons on right side
 229
 230         + "<span class=\"ctdl-msg-button\"><a href=\"javascript:save_message('" +  new_div_name + "', '" + msgnum + "');\">"
 231         + "<i class=\"fa fa-check\" style=\"color:green\"></i> "        // save button
 232         + _("Post message")
 233         + "</a></span>"
 234
 235         + "<span class=\"ctdl-msg-button\"><a href=\"javascript:cancel_post('" +  new_div_name + "');\">"
 236         + "<i class=\"fa fa-trash\" style=\"color:red\"></i> "          // cancel button
 237         + _("Cancel")
 238         + "</a></span>"
 239
 240         + "</span>"                                                     // end buttons on right side
 241         + "</div><br>"                                                  // end footer
 242
 243
 244         + "</div>"                                                      // end content
 245         + "</div>"                                                      // end wrapper
 246         ;
 247
 248         document.getElementById(new_div_name).innerHTML = replybox;
 249         document.getElementById(new_div_name).scrollIntoView({behavior: "smooth", block: "end", inline: "nearest"});
 250
 251         // These actions must happen *after* the initial render loop completes.
 252         setTimeout(function() {
 253                 var tag = document.getElementById("ctdl-editor-body");
 254                 tag.focus();                                            // sets the focus
 255                 window.getSelection().collapse(tag.firstChild, 0);      // positions the cursor
 256         }, 0);
 257 }
 258
 259
 260 // Abort a message post (it simply destroys the div)
 261 function cancel_post(div_name) {
 262         document.getElementById(div_name).outerHTML = "";               // make it cease to exist
 263 }
 264
 265
 266 // Save the posted message to the server
 267 function save_message(div_name, reply_to_msgnum) {
 268
 269         document.body.style.cursor = "wait";
 270
 271         url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/dummy_name_for_new_message";
 272         boundary = randomString(20);
 273
 274         // This converts the message to base64, then splits it into 76-character chunks
 275         encoded_msg_lines =
 276                 btoa("<html><body>" + document.getElementById("ctdl-editor-body").innerHTML + "</body></html>")
 277                 .match(/.{1,76}/g);
 278
 279         body_text =
 280                 "--" + boundary + "\r\n"
 281                 + "Content-type: text/html\r\n"
 282                 + "Content-transfer-encoding: base64\r\n"
 283                 + "\r\n";
 284         for (var i=0; i<encoded_msg_lines.length; ++i) {
 285                 body_text += encoded_msg_lines[i] + "\r\n";
 286         }
 287         body_text += "\r\n"
 288                 + "--" + boundary + "--\r\n"
 289         ;
 290
 291         var request = new XMLHttpRequest();
 292         request.open("PUT", url, true);
 293         request.setRequestHeader("Content-type", "multipart/mixed; boundary=\"" + boundary + "\"");
 294         request.onreadystatechange = function() {
 295                 if (request.readyState == 4) {
 296                         document.body.style.cursor = "default";
 297                         if (Math.trunc(request.status / 100) == 2) {
 298                                 alert("headers: " + request.getAllResponseHeaders());
 299                                 document.getElementById(div_name).outerHTML = "";               // close the editor
 300                         }
 301                         else {
 302                                 error_message = request.responseText;
 303                                 if (error_message.length == 0) {
 304                                         error_message = _("An error has occurred.");
 305                                 }
 306                                 alert(error_message);                                           // FIXME make this pretty
 307                         }
 308                 }
 309         };
 310         request.send(body_text);
 311 }