implement group join rejection callback

src/groupchat.c

@@ -196,8 +196,14 @@ void set_nick_all_groups(Tox *m, const char *nick, uint16_t length)
     for (i = 0; i < max_groupchat_index; ++i) {
         if (groupchats[i].active) {
             ToxWindow *self = get_window_ptr(groupchats[i].chatwin);
-            tox_group_set_name(m, groupchats[i].groupnumber, (uint8_t *) nick, length);
+            int ret = tox_group_set_name(m, groupchats[i].groupnumber, (uint8_t *) nick, length);
-            line_info_add(self, timefrmt, NULL, nick, NAME_CHANGE, 0, MAGENTA, "You are now known as ");
+
+            if (ret == -1 && groupchats[i].is_connected)
+                line_info_add(self, timefrmt, NULL, 0, SYS_MSG, 0, 0, "Invalid nick");
+            else if (ret == -2)
+                line_info_add(self, timefrmt, NULL, 0, SYS_MSG, 0, RED, "-!- That nick is already in use");
+            else
+                line_info_add(self, timefrmt, NULL, nick, NAME_CHANGE, 0, MAGENTA, "You are now known as ");
         }
     }
 }
@@ -482,6 +488,15 @@ static void groupchat_onGroupSelfJoin(ToxWindow *self, Tox *m, int groupnum)
     char timefrmt[TIME_STR_SIZE];
     get_time_str(timefrmt, sizeof(timefrmt));
 
+    int i;
+
+    for (i = 0; i < max_groupchat_index; ++i) {
+        if (groupchats[i].active && groupchats[i].groupnumber == groupnum) {
+            groupchats[i].is_connected = true;
+            break;
+        }
+    }
+
     line_info_add(self, timefrmt, NULL, NULL, SYS_MSG, 0, MAGENTA, "-!- Topic set to: %s", topic);
 }
 
@@ -490,7 +505,46 @@ static void groupchat_onGroupSelfTimeout(ToxWindow *self, Tox *m, int groupnum)
     if (groupnum != self->num)
         return;
 
-    line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Disconnected from group. Attempting to reconnect...");
+    int i;
+
+    for (i = 0; i < max_groupchat_index; ++i) {
+        if (groupchats[i].active && groupchats[i].groupnumber == groupnum) {
+            groupchats[i].is_connected = false;
+            break;
+        }
+    }
+
+    char timefrmt[TIME_STR_SIZE];
+    get_time_str(timefrmt, sizeof(timefrmt));
+
+    line_info_add(self, timefrmt, NULL, NULL, SYS_MSG, 0, RED, "-!- Disconnected from group");
+}
+
+static void groupchat_onGroupRejected(ToxWindow *self, Tox *m, int groupnum, uint8_t type)
+{
+    if (groupnum != self->num)
+        return;
+
+    const char *msg;
+
+    switch (type) {
+        case TOX_GJ_NICK_TAKEN:
+            msg = "That nick is already in use. Please change your nick with the '/nick' command.";
+            break;
+        case TOX_GJ_GROUP_FULL:
+            msg = "Group is full.";
+            break;
+        case TOX_GJ_INVITES_DISABLED:
+            msg = "Invites for this group have been disabled.";
+            break;
+        default:
+            return;
+    }
+
+    char timefrmt[TIME_STR_SIZE];
+    get_time_str(timefrmt, sizeof(timefrmt));
+
+    line_info_add(self, timefrmt, NULL, NULL, SYS_MSG, 0, RED, "-!- %s", msg);
 }
 
 static void groupchat_onGroupOpCertificate(ToxWindow *self, Tox *m, int groupnum, uint32_t src_peernum,
@@ -929,6 +983,7 @@ ToxWindow new_group_chat(Tox *m, int groupnum, const char *groupname, int length
     ret.onGroupNickChange = &groupchat_onGroupNickChange;
     ret.onGroupSelfJoin = &groupchat_onGroupSelfJoin;
     ret.onGroupSelfTimeout = &groupchat_onGroupSelfTimeout;
+    ret.onGroupRejected = &groupchat_onGroupRejected;
 
 #ifdef AUDIO
     ret.onWriteDevice = &groupchat_onWriteDevice;

src/groupchat.h

@@ -62,6 +62,7 @@ typedef struct {
     int groupnumber;
     int chatwin;
     bool active;
+    bool is_connected;
     int num_peers;
     int side_pos;    /* current position of the sidebar - used for scrolling up and down */
     uint8_t  *peer_names;

src/toxic.c

@@ -321,6 +321,7 @@ static Tox *init_tox(void)
     tox_callback_group_topic_change(m, on_group_topic_change, NULL);
     tox_callback_group_self_join(m, on_group_self_join, NULL);
     tox_callback_group_self_timeout(m, on_group_self_timeout, NULL);
+    tox_callback_group_rejected(m, on_group_rejected, NULL);
 
     tox_set_name(m, (uint8_t *) "Toxic User", strlen("Toxic User"));
 

src/toxic.h

@@ -122,6 +122,7 @@ void on_group_nick_change(Tox *m, int groupnumber, uint32_t peernumber, const ui
 void on_group_op_certificate(Tox *m, int groupnumber, uint32_t src_peernum, uint32_t tgt_peernum, uint8_t cert_type, void *userdata);
 void on_group_self_join(Tox *m, int groupnumber, void *userdata);
 void on_group_self_timeout(Tox *m, int groupnumber, void *userdata);
+void on_group_rejected(Tox *m, int groupnumber, uint8_t type, void *userdata);
 
 #ifdef AUDIO
 void write_device_callback_group(Tox *m, int groupnum, int peernum, const int16_t *pcm, unsigned int samples,

src/windows.c

@@ -305,6 +305,16 @@ void on_group_self_timeout(Tox *m, int groupnumber, void *userdata)
     }
 }
 
+void on_group_rejected(Tox *m, int groupnumber, uint8_t type, void *userdata)
+{
+    int i;
+
+    for (i = 0; i < MAX_WINDOWS_NUM; ++i) {
+        if (windows[i].onGroupRejected != NULL)
+            windows[i].onGroupRejected(&windows[i], m, groupnumber, type);
+    }
+}
+
 void on_file_sendrequest(Tox *m, int32_t friendnumber, uint8_t filenumber, uint64_t filesize,
                          const uint8_t *filename, uint16_t filename_length, void *userdata)
 {

src/windows.h

@@ -134,6 +134,7 @@ struct ToxWindow {
     void(*onGroupTopicChange)(ToxWindow *, Tox *, int, uint32_t, const char *, uint16_t);
     void(*onGroupSelfJoin)(ToxWindow *, Tox *, int);
     void(*onGroupSelfTimeout)(ToxWindow *, Tox *, int);
+    void(*onGroupRejected)(ToxWindow *, Tox *, int, uint8_t);
 
 #ifdef AUDIO