//go:build notmuch
// +build notmuch
package notmuch
import (
"fmt"
"io"
"os"
"path/filepath"
"strings"
"github.com/emersion/go-maildir"
"git.sr.ht/~rjarry/aerc/models"
"git.sr.ht/~rjarry/aerc/worker/lib"
notmuch "git.sr.ht/~rjarry/aerc/worker/notmuch/lib"
)
type Message struct {
uid uint32
key string
db *notmuch.DB
}
// NewReader returns a reader for a message
func (m *Message) NewReader() (io.ReadCloser, error) {
name, err := m.Filename()
if err != nil {
return nil, err
}
return os.Open(name)
}
// 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) {
name, err := m.Filename()
if err != nil {
return nil, err
}
f, err := os.Open(name)
if err != nil {
return nil, err
}
defer f.Close()
msg, err := lib.ReadMessage(f)
if err != nil {
return nil, fmt.Errorf("could not read message: %w", err)
}
return lib.FetchEntityPartReader(msg, requestedParts)
}
// SetFlag adds or removes a flag from the message.
// Notmuch doesn't support all the flags, and for those this errors.
func (m *Message) SetFlag(flag models.Flags, enable bool) error {
// Translate the flag into a notmuch tag, ignoring no-op flags.
var tag string
switch flag {
case models.SeenFlag:
// Note: Inverted properly later
tag = "unread"
case models.AnsweredFlag:
tag = "replied"
case models.FlaggedFlag:
tag = "flagged"
default:
return fmt.Errorf("Notmuch doesn't support flag %v", flag)
}
// Get the current state of the flag.
// Note that notmuch handles models.SeenFlag in an inverted sense.
oldState := false
tags, err := m.Tags()
if err != nil {
return err
}
for _, t := range tags {
if t == tag {
oldState = true
break
}
}
if flag == models.SeenFlag {
oldState = !oldState
}
// Skip if flag already in correct state.
if oldState == enable {
return nil
}
if !enable {
if flag == models.SeenFlag {
return m.AddTag("unread")
} else {
return m.RemoveTag(tag)
}
} else {
if flag == models.SeenFlag {
return m.RemoveTag("unread")
} else {
return m.AddTag(tag)
}
}
}
// MarkAnswered either adds or removes the "replied" tag from the message.
func (m *Message) MarkAnswered(answered bool) error {
return m.SetFlag(models.AnsweredFlag, answered)
}
// MarkRead either adds or removes the maildir.FlagSeen flag from the message.
func (m *Message) MarkRead(seen bool) error {
return m.SetFlag(models.SeenFlag, seen)
}
// tags returns the notmuch tags of a message
func (m *Message) Tags() ([]string, error) {
return m.db.MsgTags(m.key)
}
func (m *Message) Labels() ([]string, error) {
return m.Tags()
}
func (m *Message) ModelFlags() (models.Flags, error) {
var flags models.Flags = models.SeenFlag
tags, err := m.Tags()
if err != nil {
return 0, err
}
for _, tag := range tags {
switch tag {
case "replied":
flags |= models.AnsweredFlag
case "flagged":
flags |= models.FlaggedFlag
case "unread":
flags &^= models.SeenFlag
}
}
return flags, nil
}
func (m *Message) UID() uint32 {
return m.uid
}
func (m *Message) Filename() (string, error) {
return m.db.MsgFilename(m.key)
}
// AddTag adds a single tag.
// Consider using *Message.ModifyTags for multiple additions / removals
// instead of looping over a tag array
func (m *Message) AddTag(tag string) error {
return m.ModifyTags([]string{tag}, nil)
}
// RemoveTag removes a single tag.
// Consider using *Message.ModifyTags for multiple additions / removals
// instead of looping over a tag array
func (m *Message) RemoveTag(tag string) error {
return m.ModifyTags(nil, []string{tag})
}
func (m *Message) ModifyTags(add, remove []string) error {
return m.db.MsgModifyTags(m.key, add, remove)
}
func (m *Message) Remove(dir maildir.Dir) error {
filenames, err := m.db.MsgFilenames(m.key)
if err != nil {
return err
}
for _, filename := range filenames {
if dirContains(dir, filename) {
err := m.db.DeleteMessage(filename)
if err != nil {
return err
}
if err := os.Remove(filename); err != nil {
return err
}
return nil
}
}
return fmt.Errorf("no matching message file found in %s", string(dir))
}
func (m *Message) Copy(target maildir.Dir) error {
filename, err := m.Filename()
if err != nil {
return err
}
source, key := parseFilename(filename)
if key == "" {
return fmt.Errorf("failed to parse message filename: %s", filename)
}
newKey, err := source.Copy(target, key)
if err != nil {
return err
}
newFilename, err := target.Filename(newKey)
if err != nil {
return err
}
_, err = m.db.IndexFile(newFilename)
return err
}
func (m *Message) Move(srcDir, destDir maildir.Dir) error {
var src string
filenames, err := m.db.MsgFilenames(m.key)
if err != nil {
return err
}
for _, filename := range filenames {
if dirContains(srcDir, filename) {
src = filename
break
}
}
if src == "" {
return fmt.Errorf("no matching message file found in %s", string(srcDir))
}
tags, err := m.Tags()
if err != nil {
return err
}
// Remove encoded UID information from the key to prevent sync issues
name := lib.StripUIDFromMessageFilename(filepath.Base(src))
dest := filepath.Join(string(destDir), "cur", name)
if err := m.db.DeleteMessage(src); err != nil {
return err
}
if err := os.Rename(src, dest); err != nil {
return err
}
if _, err = m.db.IndexFile(dest); err != nil {
return err
}
if err := m.ModifyTags(tags, nil); err != nil {
return err
}
return nil
}
func parseFilename(filename string) (maildir.Dir, string) {
base := filepath.Base(filename)
dir := filepath.Dir(filename)
dir, curdir := filepath.Split(dir)
if curdir != "cur" {
return "", ""
}
split := strings.Split(base, ":")
if len(split) < 2 {
return maildir.Dir(dir), ""
}
key := split[0]
return maildir.Dir(dir), key
}
func dirContains(dir maildir.Dir, filename string) bool {
for _, sub := range []string{"cur", "new"} {
match, _ := filepath.Match(filepath.Join(string(dir), sub, "*"), filename)
if match {
return true
}
}
return false
}
