//---------------------------------------------------------- save to db
func _save(group *GroupInfo) {
c := db.Collection(COLLECTION)
info, err := c.Upsert(bson.M{"groupid": group.GroupId}, group)
if err != nil {
log.Println(info, err)
}
}
//---------------------------------------------------------- startup load groups
func LoadGroups() {
c := db.Collection(COLLECTION)
var groups []GroupInfo
err := c.Find(nil).All(&groups)
if err != nil {
log.Println(err)
}
for _, v := range groups {
_groups[v.GroupId] = &v
_group_names[v.Name] = &v
}
}
//---------------------------------------------------------- leave group
func (group *GroupInfo) Leave(user_id int32) {
_lock.Lock()
defer _lock.Unlock()
defer func() { // if no member, delete group
if group._members.Len() == 0 {
delete(_groups, group.GroupId)
delete(_group_names, group.Name)
c := db.Collection(COLLECTION)
err := c.Remove(bson.M{"groupid": group.GroupId})
if err != nil {
log.Println(err)
}
}
}()
group._members._remove(user_id)
}