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package maildir
import (
"bufio"
"bytes"
"fmt"
"io"
"io/ioutil"
"github.com/emersion/go-maildir"
"github.com/emersion/go-message"
"github.com/emersion/go-message/textproto"
"git.sr.ht/~sircmpwn/aerc/models"
"git.sr.ht/~sircmpwn/aerc/worker/lib"
)
// A Message is an individual email inside of a maildir.Dir.
type Message struct {
dir maildir.Dir
uid uint32
key string
}
// NewReader reads a message into memory and returns an io.Reader for it.
func (m Message) NewReader() (io.Reader, error) {
f, err := m.dir.Open(m.key)
if err != nil {
return nil, err
}
defer f.Close()
b, err := ioutil.ReadAll(f)
if err != nil {
return nil, err
}
return bytes.NewReader(b), nil
}
// Flags fetches the set of flags currently applied to the message.
func (m Message) Flags() ([]maildir.Flag, error) {
return m.dir.Flags(m.key)
}
// ModelFlags fetches the set of models.flags currently applied to the message.
func (m Message) ModelFlags() ([]models.Flag, error) {
flags, err := m.dir.Flags(m.key)
if err != nil {
return nil, err
}
return translateFlags(flags), nil
}
// SetFlags replaces the message's flags with a new set.
func (m Message) SetFlags(flags []maildir.Flag) error {
return m.dir.SetFlags(m.key, flags)
}
// MarkRead either adds or removes the maildir.FlagSeen flag from the message.
func (m Message) MarkRead(seen bool) error {
flags, err := m.Flags()
if err != nil {
return fmt.Errorf("could not read previous flags: %v", err)
}
if seen {
flags = append(flags, maildir.FlagSeen)
return m.SetFlags(flags)
}
var newFlags []maildir.Flag
for _, flag := range flags {
if flag != maildir.FlagSeen {
newFlags = append(newFlags, flag)
}
}
return m.SetFlags(newFlags)
}
// Remove deletes the email immediately.
func (m Message) Remove() error {
return m.dir.Remove(m.key)
}
// MessageInfo populates a models.MessageInfo struct for the message.
func (m Message) MessageInfo() (*models.MessageInfo, error) {
return lib.MessageInfo(m)
}
// NewBodyPartReader creates a new io.Reader for the requested body part(s) of
// the message.
func (m Message) NewBodyPartReader(requestedParts []int) (io.Reader, error) {
f, err := m.dir.Open(m.key)
if err != nil {
return nil, err
}
defer f.Close()
msg, err := message.Read(f)
if err != nil {
return nil, fmt.Errorf("could not read message: %v", err)
}
return lib.FetchEntityPartReader(msg, requestedParts)
}
var flagMap = map[maildir.Flag]models.Flag{
maildir.FlagReplied: models.AnsweredFlag,
maildir.FlagSeen: models.SeenFlag,
maildir.FlagTrashed: models.DeletedFlag,
maildir.FlagFlagged: models.FlaggedFlag,
// maildir.FlagDraft Flag = 'D'
// maildir.FlagPassed Flag = 'P'
}
func translateFlags(maildirFlags []maildir.Flag) []models.Flag {
var flags []models.Flag
for _, maildirFlag := range maildirFlags {
if flag, ok := flagMap[maildirFlag]; ok {
flags = append(flags, flag)
}
}
return flags
}
func (m Message) UID() uint32 {
return m.uid
}
func (m Message) Headers() (*message.Header, error) {
f, err := m.dir.Open(m.key)
if err != nil {
return nil, err
}
defer f.Close()
br := bufio.NewReader(f)
h, err := textproto.ReadHeader(br)
if err != nil {
return nil, err
}
mh := message.Header{h}
return &mh, nil
}
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