e6fde7a2d8d747fab6e04d4a868e13ac21e85f08
[citadel] / webcit-ng / static / js / views.js
1 //
2 // Copyright (c) 2016-2020 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 // List of defined views shamelessly swiped from libcitadel headers
16 //
17 var views = {
18         VIEW_BBS                : 0,    /* Bulletin board view */
19         VIEW_MAILBOX            : 1,    /* Mailbox summary */
20         VIEW_ADDRESSBOOK        : 2,    /* Address book view */
21         VIEW_CALENDAR           : 3,    /* Calendar view */
22         VIEW_TASKS              : 4,    /* Tasks view */
23         VIEW_NOTES              : 5,    /* Notes view */
24         VIEW_WIKI               : 6,    /* Wiki view */
25         VIEW_CALBRIEF           : 7,    /* Brief Calendar view */
26         VIEW_JOURNAL            : 8,    /* Journal view */
27         VIEW_DRAFTS             : 9,    /* Drafts view */
28         VIEW_BLOG               : 10,   /* Blog view */
29         VIEW_QUEUE              : 11,   /* SMTP QUEUE rooms */
30         VIEW_WIKIMD             : 12,   /* Markdown Wiki view */
31 };
32
33
34 // This function is the dispatcher that determines the correct view for a room,
35 // and calls the correct renderer.  Greater/Less than bounds are accepted.
36 //
37 function render_room_view(gt_msg, lt_msg) {
38         switch(current_view) {
39                 case views.VIEW_MAILBOX:                                                // FIXME view mail rooms as forums for now
40                 case views.VIEW_BBS:
41                         document.getElementById("ctdl-main").innerHTML = "<div id=\"ctdl-mrp\" class=\"ctdl-msg-reading-pane\"></div>";
42                         forum_readmessages("ctdl-mrp", gt_msg, lt_msg);
43                         break;
44                 default:
45                         document.getElementById("ctdl-main").innerHTML =
46                                 "The view for " + current_room + " is " + current_view + " but there is no renderer." ;
47                         break;
48         }
49
50 }
51
52
53 // Forum view (flat) -- let's have another go at this with the rendering done client-side
54 //
55 function forum_readmessages(target_div, gt_msg, lt_msg) {
56         original_text = document.getElementById(target_div).innerHTML;          // in case we need to replace it after an error
57         document.getElementById(target_div).innerHTML = 
58                 "<div align=\"center\"><i class=\"fas fa-spinner fa-spin\"></i>&nbsp;&nbsp;"
59                 + _("Loading messages from server, please wait") + "</div>";
60
61         if (lt_msg < 9999999999) {
62                 url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/msgs.lt|" + lt_msg;
63         }
64         else {
65                 url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/msgs.gt|" + gt_msg;
66         }
67
68         fetch_msg_list = async() => {
69                 response = await fetch(url);
70                 msgs = await(response.json());
71                 if (response.ok) {
72                         document.getElementById(target_div).innerHTML = "" ;
73
74                         // If we were given an explicit starting point, by all means start there.
75                         // Note that we don't have to remove them from the array because we did a 'msgs gt|xxx' command to Citadel.
76                         if (gt_msg > 0) {
77                                 msgs = msgs.slice(0, messages_per_page);
78                         }
79
80                         // Otherwise, show us the last 20 messages
81                         else {
82                                 if (msgs.length > messages_per_page) {
83                                         msgs = msgs.slice(msgs.length - messages_per_page);
84                                 }
85                                 new_old_div_name = randomString(5);
86                                 if (msgs.length < 1) {
87                                         newlt = lt_msg;
88                                 }
89                                 else {
90                                         newlt = msgs[0];
91                                 }
92                                 document.getElementById(target_div).innerHTML +=
93                                         "<div id=\"" + new_old_div_name + "\">" +
94                                         "<div align=\"center\">" +
95                                         "<a href=\"javascript:forum_readmessages('" + new_old_div_name + "', 0, " + newlt + ");\">" +
96                                         "<i class=\"fa fa-arrow-circle-up\"></i>&nbsp;&nbsp;" +
97                                         _("Older posts") + "&nbsp;&nbsp;<i class=\"fa fa-arrow-circle-up\"></a></div></div></a></div></div>" ;
98                         }
99
100                         // Render an empty div for each message.  We will fill them in later.
101                         for (var i in msgs) {
102                                 document.getElementById(target_div).innerHTML += "<div id=\"ctdl_msg_" + msgs[i] + "\"> </div>" ;
103                                 document.getElementById("ctdl_msg_"+msgs[i]).style.display = "none";
104                         }
105                         if (lt_msg == 9999999999) {
106                                 new_new_div_name = randomString(5);
107                                 if (msgs.length <= 0) {
108                                         newgt = gt_msg;
109                                 }
110                                 else {
111                                         newgt = msgs[msgs.length-1];
112                                 }
113                                 document.getElementById(target_div).innerHTML +=
114                                         "<div id=\"" + new_new_div_name + "\">" +
115                                         "<div align=\"center\">" +
116                                         "<a href=\"javascript:forum_readmessages('" + new_new_div_name + "', " + newgt + ", 9999999999);\">" +
117                                         "<i class=\"fa fa-arrow-circle-down\"></i>&nbsp;&nbsp;" +
118                                         _("Newer posts") + "&nbsp;&nbsp;<i class=\"fa fa-arrow-circle-down\"></a></div></div>" ;
119                         }
120
121                         // Now figure out where to scroll to after rendering.
122                         if (gt_msg > 0) {
123                                 scroll_to = msgs[0];
124                         }
125                         else if (lt_msg < 9999999999) {
126                                 scroll_to = msgs[msgs.length-1];
127                         }
128                         else if ( (logged_in) && (gt_msg == 0) && (lt_msg == 9999999999) ) {
129                                 scroll_to = msgs[msgs.length-1];
130                         }
131                         else {
132                                 scroll_to = msgs[0];            // FIXME this is too naive
133                         }
134
135                         // Render the individual messages in the divs
136                         forum_render_messages(msgs, "ctdl_msg_", scroll_to)
137                 }
138                 else {
139                         // if xhr fails, this will make the link reappear so the user can try again
140                         document.getElementById(target_div).innerHTML = original_text;
141                 }
142         }
143         fetch_msg_list();
144 }
145
146
147 // Render a range of messages, with the div prefix specified
148 //
149 function forum_render_messages(msgs, prefix, scroll_to) {
150         for (i=0; i<msgs.length; ++i) {
151                 forum_render_one(prefix+msgs[i], msgs[i], scroll_to);
152         }
153 }
154
155
156 // 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.
157 function forum_render_one(div, msgnum, scroll_to) {
158         fetch_message = async() => {
159                 response = await fetch("/ctdl/r/" + escapeHTMLURI(current_room) + "/" + msgs[i] + "/json");
160                 msg = await response.json();
161                 if (response.ok) {
162
163                         document.getElementById(div).innerHTML =
164                           "<div class=\"ctdl-msg-wrapper\">"                            // begin message wrapper
165                         + "<div class=\"ctdl-avatar\">"                                 // begin avatar
166                         + "<img src=\"/ctdl/u/" + msg.from + "/userpic\" width=\"32\" "
167                         + "onerror=\"this.parentNode.innerHTML='&lt;i class=&quot;fa fa-user-circle fa-2x&quot;&gt;&lt;/i&gt; '\">"
168                         + "</div>"                                                      // end avatar
169                         + "<div class=\"ctdl-msg-content\">"                            // begin content
170                         + "<div class=\"ctdl-msg-header\">"                             // begin header
171                         + "<span class=\"ctdl-username\"><a href=\"#\">"                // FIXME link to user profile
172                         + msg.from
173                         + "</a></span> "
174                         + "<span class=\"ctdl-msgdate\">"
175                         + msg.time
176                         + "</span> "
177                         + "</div>"                                                      // end header
178                         + "<div>"                                                       // begin body
179                         + msg.text
180                         + "</div>"                                                      // end body
181                         + "</div>"                                                      // end content
182                         + "</div>"                                                      // end wrapper
183                         ;
184                 }
185                 else {
186                         document.getElementById(div).innerHTML = "ERROR";
187                 }
188                 document.getElementById(div).style.display  = "inline";
189                 if (msgnum == scroll_to) {
190                         window.location.hash = div;
191                 }
192         }
193         fetch_message();
194 }
195