65 lines
1.4 KiB
Go
65 lines
1.4 KiB
Go
package imaputils
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import (
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"git.sr.ht/~blallo/papero/config"
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"github.com/emersion/go-imap"
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)
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type ListMessagesOpts struct {
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Mailbox string
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Limit uint32
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}
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func ListMessages(conf *config.AccountData, opts *ListMessagesOpts, debug bool) ([]*imap.Message, error) {
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var empty []*imap.Message
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conn := NewConnection(conf)
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err := conn.Start(debug)
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if err != nil {
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return empty, err
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}
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defer conn.Close()
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return ListMessagesInSession(conn, opts)
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}
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func ListMessagesInSession(conn *IMAPConnection, opts *ListMessagesOpts) ([]*imap.Message, error) {
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var messages []*imap.Message
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mbox, err := conn.client.Select(opts.Mailbox, true)
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if err != nil {
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return messages, err
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}
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return getMessages(mbox, conn, opts.Limit)
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}
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func getMessages(mbox *imap.MailboxStatus, conn *IMAPConnection, limit uint32) ([]*imap.Message, error) {
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var start uint32
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var msgs []*imap.Message
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seqset := new(imap.SeqSet)
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messages := make(chan *imap.Message, 10)
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done := make(chan error, 1)
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switch {
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case limit == 0:
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start = 1
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case mbox.Messages > limit:
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start = mbox.Messages - limit + 1
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default:
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start = 1
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}
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seqset.AddRange(start, mbox.Messages)
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go func() {
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done <- conn.client.Fetch(seqset, []imap.FetchItem{imap.FetchEnvelope, imap.FetchFlags}, messages)
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}()
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for msg := range messages {
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msgs = append(msgs, msg)
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}
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if err := <-done; err != nil {
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return []*imap.Message{}, err
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}
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return msgs, nil
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}
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