// UserGroups fetches the group names the given user belongs to in the given
// channel. The slice of group names sent via the returned channel. On error,
// the returned channel is closed without without sending a slice.
func UserGroups(client *gumble.Client, user *gumble.User, channel *gumble.Channel) <-chan []string {
ch := make(chan []string)
if !user.IsRegistered() {
close(ch)
return ch
}
var detacher gumble.Detacher
listener := Listener{
Disconnect: func(e *gumble.DisconnectEvent) {
detacher.Detach()
close(ch)
},
ChannelChange: func(e *gumble.ChannelChangeEvent) {
if e.Channel == channel && e.Type.Has(gumble.ChannelChangeRemoved) {
detacher.Detach()
close(ch)
}
},
PermissionDenied: func(e *gumble.PermissionDeniedEvent) {
if e.Channel == channel && e.Type == gumble.PermissionDeniedPermission && (e.Permission&gumble.PermissionWrite) != 0 {
detacher.Detach()
close(ch)
}
},
ACL: func(e *gumble.ACLEvent) {
if e.ACL.Channel != channel {
return
}
var names []string
for _, g := range e.ACL.Groups {
if (g.UsersAdd[user.UserID] != nil || g.UsersInherited[user.UserID] != nil) && g.UsersRemove[user.UserID] == nil {
names = append(names, g.Name)
}
}
detacher.Detach()
ch <- names
close(ch)
},
}
detacher = client.Config.Attach(&listener)
channel.RequestACL()
return ch
}
