// CheckNewMails Check if exist a new mail and post it
func (m *MatterMail) CheckNewMails() error {
m.debg.Println("CheckNewMails")
if err := m.CheckImapConnection(); err != nil {
return err
}
var (
cmd *imap.Command
rsp *imap.Response
)
// Open a mailbox (synchronous command - no need for imap.Wait)
m.imapClient.Select("INBOX", false)
var specs []imap.Field
specs = append(specs, "UNSEEN")
seq := &imap.SeqSet{}
// get headers and UID for UnSeen message in src inbox...
cmd, err := imap.Wait(m.imapClient.UIDSearch(specs...))
if err != nil {
m.debg.Println("Error UIDSearch UTF-8:")
m.debg.Println(err)
m.debg.Println("Try with US-ASCII")
// try again with US-ASCII
cmd, err = imap.Wait(m.imapClient.Send("UID SEARCH", append([]imap.Field{"CHARSET", "US-ASCII"}, specs...)...))
if err != nil {
m.eror.Println("UID SEARCH US-ASCII")
return err
}
}
for _, rsp := range cmd.Data {
for _, uid := range rsp.SearchResults() {
m.debg.Println("CheckNewMails:AddNum ", uid)
seq.AddNum(uid)
}
}
// no new messages
if seq.Empty() {
m.debg.Println("CheckNewMails: No new messages")
return nil
}
cmd, _ = m.imapClient.UIDFetch(seq, "BODY[]")
postmail := false
for cmd.InProgress() {
m.debg.Println("CheckNewMails: cmd in Progress")
// Wait for the next response (no timeout)
m.imapClient.Recv(-1)
// Process command data
for _, rsp = range cmd.Data {
msgFields := rsp.MessageInfo().Attrs
header := imap.AsBytes(msgFields["BODY[]"])
if msg, _ := mail.ReadMessage(bytes.NewReader(header)); msg != nil {
m.debg.Println("CheckNewMails:PostMail")
if err := m.PostMail(msg); err != nil {
return err
}
postmail = true
}
}
cmd.Data = nil
}
// Check command completion status
if rsp, err := cmd.Result(imap.OK); err != nil {
if err == imap.ErrAborted {
m.eror.Println("Fetch command aborted")
return err
}
m.eror.Println("Fetch error:", rsp.Info)
return err
}
cmd.Data = nil
if postmail {
m.debg.Println("CheckNewMails: Mark all messages with flag \\Seen")
//Mark all messages seen
_, err = imap.Wait(m.imapClient.UIDStore(seq, "+FLAGS.SILENT", `\Seen`))
if err != nil {
m.eror.Println("Error UIDStore \\Seen")
return err
}
}
return nil
}
