func readMessage(message *imap.MessageInfo) {
set := new(imap.SeqSet)
set.AddNum(message.Seq)
cmd, err := imap.Wait(c.Fetch(set, BODY_PART_NAME))
panicMaybe(err)
reader, err := messageReader(cmd.Data[0].MessageInfo())
panicMaybe(err)
scanner := bufio.NewScanner(reader)
var lines []string
for scanner.Scan() {
lines = append(lines, scanner.Text())
}
messageBodyStr := strings.Join(lines[:min(len(lines), ui.TermHeight()-2)], "\n")
if len(messageBodyStr) <= 0 {
LOG.Printf("Message body was empty or could not be retrieved: +%v\n", err)
return
}
msgBox := ui.NewPar(messageBodyStr)
msgBox.Border.Label = "Reading Message"
msgBox.Height = ui.TermHeight()
msgBox.Width = ui.TermWidth()
msgBox.Y = 0
ui.Render(msgBox)
topLineIndex := 0
redraw := make(chan bool)
for {
select {
case e := <-ui.EventCh():
switch e.Key {
case ui.KeyArrowDown:
topLineIndex = max(0, min(
len(lines)-msgBox.Height/2,
topLineIndex+1))
go func() { redraw <- true }()
case ui.KeyArrowUp:
topLineIndex = max(0, topLineIndex-1)
go func() { redraw <- true }()
case ui.KeyEsc:
// back to "list messages"
return
}
case <-redraw:
messageBodyStr = strings.Join(lines[topLineIndex+1:], "\n")
msgBox.Text = messageBodyStr
ui.Render(msgBox)
}
}
}
// getEmails will fetch the full bodies of all emails listed in the given command.
func getEmails(client *imap.Client, cmd *imap.Command) ([]map[string]interface{}, error) {
var emails []map[string]interface{}
seq := new(imap.SeqSet)
for _, rsp := range cmd.Data {
for _, uid := range rsp.SearchResults() {
seq.AddNum(uid)
}
}
if seq.Empty() {
return emails, nil
}
fCmd, err := imap.Wait(client.UIDFetch(seq, "INTERNALDATE", "BODY[]", "UID", "RFC822.HEADER"))
if err != nil {
return emails, err
}
var email map[string]interface{}
for _, msgData := range fCmd.Data {
msgFields := msgData.MessageInfo().Attrs
email, err = newEmailMessage(msgFields)
if err != nil {
return emails, err
}
emails = append(emails, email)
// mark message as read
fSeq := new(imap.SeqSet)
fSeq.AddNum(imap.AsNumber(msgFields["UID"]))
_, err = imap.Wait(client.UIDStore(fSeq, "+FLAGS", "\\SEEN"))
if err != nil {
return emails, err
}
}
return emails, nil
}