func processPresence(api *slack.Client, workChan chan slack.User, resultChan chan SlackUser) {
for u := range workChan {
if u.ID == "" {
continue
}
// no need to add deleted users
if u.Deleted {
continue
}
// filter bots
if u.IsBot {
continue
}
// even if we get error from slack api set it to nil
var lastActive *time.Time
// presence information is optional, so we can skip the errored ones
p, err := api.GetUserPresence(u.ID)
if err != nil || p == nil {
resultChan <- SlackUser{u, lastActive}
continue
}
// set presence info
u.Presence = p.Presence
resultChan <- SlackUser{u, lastActive}
}
}
