use/display nicks instead of friend numbers for groupchat invites

src/friendlist.c

@@ -21,6 +21,7 @@ extern ToxWindow *prompt;
 
 typedef struct {
     uint8_t name[TOX_MAX_NAME_LENGTH];
+    uint8_t namelength;
     uint8_t statusmsg[TOX_MAX_STATUSMESSAGE_LENGTH];
     uint16_t statusmsg_len;
     int num;
@@ -58,6 +59,7 @@ void friendlist_onNickChange(ToxWindow *self, int num, uint8_t *str, uint16_t le
         return;
 
     memcpy((char *) &friends[num].name, (char *) str, len);
+    friends[num].namelength = len;
 }
 
 void friendlist_onStatusChange(ToxWindow *self, Tox *m, int num, TOX_USERSTATUS status)
@@ -91,9 +93,12 @@ int friendlist_onFriendAdded(Tox *m, int num)
             friends[i].chatwin = -1;
             friends[i].online = false;
             friends[i].status = TOX_USERSTATUS_NONE;
+            friends[i].namelength = tox_getname(m, num, friends[i].name);
 
-            if (tox_getname(m, num, friends[i].name) == -1 || friends[i].name[0] == '\0')
+            if (friends[i].namelength == -1 || friends[i].name[0] == '\0') {
                 strcpy((char *) friends[i].name, UNKNOWN_NAME);
+                friends[i].namelength = strlen(UNKNOWN_NAME) + 1;
+            }
 
             if (i == num_friends)
                 ++num_friends;
@@ -251,6 +256,21 @@ void disable_chatwin(int f_num)
     friends[f_num].chatwin = -1;
 }
 
+/* Returns the respective friend number of name. Returns -1 on no match 
+   This should be used instead of tox_getname for retrieving */
+int get_friendnum(uint8_t *name)
+{
+    int i;
+    int len = strlen(name);
+
+    for (i = 0; i < num_friends; ++i) {
+        if (strncmp(friends[i].name, name, len) == 0)
+            return friends[i].num;
+    }
+
+    return -1;
+}
+
 static void friendlist_onInit(ToxWindow *self, Tox *m)
 {
 

src/friendlist.h

@@ -7,5 +7,6 @@
 ToxWindow new_friendlist();
 int friendlist_onFriendAdded(Tox *m, int num);
 void disable_chatwin(int f_num);
+int get_friendnum(uint8_t *name);
 
 #endif /* end of include guard: FRIENDLIST_H_53I41IM */

src/prompt.c

@@ -340,8 +340,8 @@ void cmd_help(ToxWindow *self, Tox *m, int argc, char **argv)
     wprintw(self->window, "      status <type> <message>   : Set your status with optional note\n");
     wprintw(self->window, "      note  <message>           : Set a personal note\n");
     wprintw(self->window, "      nick <nickname>           : Set your nickname\n");
-    wprintw(self->window, "      join <n>                  : Join a group chat (must be invited)\n");
+    wprintw(self->window, "      join <n>                  : Join a group chat\n");
-    wprintw(self->window, "      invite <f> <g>            : Invite friend f to groupchat g\n");
+    wprintw(self->window, "      invite <nick> <n>         : Invite friend to a groupchat\n");
     wprintw(self->window, "      groupchat                 : Create a group chat\n");
     wprintw(self->window, "      myid                      : Print your ID\n");
     wprintw(self->window, "      quit/exit                 : Exit Toxic\n");
@@ -368,15 +368,25 @@ void cmd_invite(ToxWindow *self, Tox *m, int argc, char **argv)
         return;
     }
 
-    int friendnum = atoi(argv[1]);
+    uint8_t *friendname = argv[1];
     int groupnum = atoi(argv[2]);
 
+    if (friendname[0] == '\"')
+        friendname[strlen(++friendname)-1] = L'\0';
+
+    int friendnum = get_friendnum(friendname);
+
+    if (friendnum == -1) {
+        wprintw(self->window, "Friend '%s' not found.\n", friendname);
+        return;
+    }
+
     if (tox_invite_friend(m, friendnum, groupnum) == -1) {
         wprintw(self->window, "Failed to invite friend.\n");
         return;
     }
 
-    wprintw(self->window, "Invited friend %d to group chat %d.\n", friendnum, groupnum);
+    wprintw(self->window, "Invited friend %s to group chat %d.\n", friendname, groupnum);
 }
 
 void cmd_join(ToxWindow *self, Tox *m, int argc, char **argv)
@@ -779,7 +789,16 @@ void prompt_onFriendRequest(ToxWindow *self, uint8_t *key, uint8_t *data, uint16
 
 void prompt_onGroupInvite(ToxWindow *self, Tox *m, int friendnumber, uint8_t *group_pub_key)
 {
-    wprintw(self->window, "\nGroup chat invite from: %d\n", friendnumber);
+    if (friendnumber < 0)
+        return;
+
+    uint8_t name[TOX_MAX_NAME_LENGTH] = {'\0'};
+
+    if (tox_getname(m, friendnumber, name) == -1)
+        return;
+
+    name[TOXIC_MAX_NAME_LENGTH] = '\0';    /* enforce client max name length */
+    wprintw(self->window, "\nGroup chat invite from %s.\n", name);
 
     int ngc = get_num_groupchats();