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package maildir
import (
"fmt"
"io"
"github.com/emersion/go-maildir"
"github.com/emersion/go-message"
"git.sr.ht/~rjarry/aerc/models"
"git.sr.ht/~rjarry/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.ReadCloser, error) {
return m.dir.Open(m.key)
}
// 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 translateMaildirFlags(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)
}
// SetOneFlag enables or disables a single message flag on the message.
func (m Message) SetOneFlag(flag maildir.Flag, enable bool) error {
flags, err := m.Flags()
if err != nil {
return fmt.Errorf("could not read previous flags: %v", err)
}
if enable {
flags = append(flags, flag)
return m.SetFlags(flags)
}
var newFlags []maildir.Flag
for _, oldFlag := range flags {
if oldFlag != flag {
newFlags = append(newFlags, oldFlag)
}
}
return m.SetFlags(newFlags)
}
// MarkReplied either adds or removes the maildir.FlagReplied flag from the
// message.
func (m Message) MarkReplied(answered bool) error {
return m.SetOneFlag(maildir.FlagReplied, answered)
}
// 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 maildirToFlag = 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'
}
var flagToMaildir = map[models.Flag]maildir.Flag{
models.AnsweredFlag: maildir.FlagReplied,
models.SeenFlag: maildir.FlagSeen,
models.DeletedFlag: maildir.FlagTrashed,
models.FlaggedFlag: maildir.FlagFlagged,
// maildir.FlagDraft Flag = 'D'
// maildir.FlagPassed Flag = 'P'
}
func translateMaildirFlags(maildirFlags []maildir.Flag) []models.Flag {
var flags []models.Flag
for _, maildirFlag := range maildirFlags {
if flag, ok := maildirToFlag[maildirFlag]; ok {
flags = append(flags, flag)
}
}
return flags
}
func translateFlags(flags []models.Flag) []maildir.Flag {
var maildirFlags []maildir.Flag
for _, flag := range flags {
if maildirFlag, ok := flagToMaildir[flag]; ok {
maildirFlags = append(maildirFlags, maildirFlag)
}
}
return maildirFlags
}
func (m Message) UID() uint32 {
return m.uid
}
func (m Message) Labels() ([]string, error) {
return nil, nil
}
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