157 lines
2.9 KiB
Go
157 lines
2.9 KiB
Go
package main
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import (
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"fmt"
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"mime"
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"net/mail"
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"strings"
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"github.com/emersion/go-imap"
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"github.com/emersion/go-imap/client"
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)
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type ImapClient struct {
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cli *client.Client
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fromFolder string
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toFolder string
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}
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func NewImapClient(host, user, pass, fromFolder, toFolder string) (*ImapClient, error) {
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c, err := client.DialTLS(host, nil)
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if err != nil {
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return nil, err
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}
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err = c.Login(user, pass)
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if err != nil {
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c.Logout()
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return nil, err
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}
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return &ImapClient{
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cli: c,
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fromFolder: fromFolder,
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toFolder: toFolder,
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}, nil
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}
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func (ic *ImapClient) Close() {
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ic.cli.Logout()
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}
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func (ic *ImapClient) Poll() ([]*Task, error) {
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mbox, err := ic.Select(ic.fromFolder, false)
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if err != nil {
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return nil, err
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}
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if mbox.Messages < 1 {
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return []*Task{}, nil
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}
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seqset := &imap.SeqSet{}
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seqset.AddRange(1, mbox.Messages)
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section := &imap.BodySectionName{}
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msgs, err := ic.Fetch(seqset, []imap.FetchItem{imap.FetchEnvelope, imap.FetchUid, section.FetchItem()})
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if err != nil {
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return nil, err
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}
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ret := []*Task{}
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for _, msg := range msgs {
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m, err := mail.ReadMessage(msg.GetBody(section))
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if err != nil {
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return nil, err
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}
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d, err := m.Header.Date()
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if err != nil {
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return nil, err
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}
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wd := &mime.WordDecoder{}
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s, err := wd.DecodeHeader(m.Header.Get("Subject"))
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if err != nil {
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return nil, err
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}
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ret = append(ret, &Task{
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Name: s,
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HtmlNotes: fmt.Sprintf(
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"<body>From: %s\nTo: %s\nDate: %s</body>",
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ic.escape(m.Header.Get("From")),
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ic.escape(m.Header.Get("To")),
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ic.escape(d.Local().Format("Monday, 2006-01-02 15h04 -0700")),
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),
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Uid: msg.Uid,
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})
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}
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return ret, nil
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}
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func (ic *ImapClient) Archive(task *Task) error {
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seqset := &imap.SeqSet{}
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seqset.AddNum(task.Uid)
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return ic.Move(seqset, ic.toFolder)
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}
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func (ic *ImapClient) List(ref, name string) ([]*imap.MailboxInfo, error) {
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ch := make(chan *imap.MailboxInfo, 10)
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done := make(chan error)
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go func() {
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done <- ic.cli.List(ref, name, ch)
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}()
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ret := []*imap.MailboxInfo{}
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for mbox := range ch {
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ret = append(ret, mbox)
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}
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err := <-done
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if err != nil {
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return nil, err
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} else {
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return ret, nil
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}
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}
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func (ic *ImapClient) Fetch(seqset *imap.SeqSet, toFetch []imap.FetchItem) ([]*imap.Message, error) {
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ch := make(chan *imap.Message, 10)
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done := make(chan error)
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go func() {
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done <- ic.cli.Fetch(seqset, toFetch, ch)
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}()
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ret := []*imap.Message{}
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for msg := range ch {
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ret = append(ret, msg)
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}
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err := <-done
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if err != nil {
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return nil, err
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} else {
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return ret, nil
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}
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}
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func (ic *ImapClient) Select(name string, readonly bool) (*imap.MailboxStatus, error) {
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return ic.cli.Select(name, readonly)
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}
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func (ic *ImapClient) Move(seqset *imap.SeqSet, dest string) error {
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return ic.cli.UidMove(seqset, dest)
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}
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func (ic *ImapClient) escape(in string) string {
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in = strings.ReplaceAll(in, "<", "<")
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in = strings.ReplaceAll(in, ">", ">")
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in = strings.ReplaceAll(in, `"`, """)
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return in
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}
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