package mboxer
import (
"bytes"
"crypto/sha256"
"encoding/hex"
"fmt"
"io"
"git.sr.ht/~rjarry/aerc/lib/rfc822"
"git.sr.ht/~rjarry/aerc/models"
)
type mailboxContainer struct {
mailboxes map[string]*container
}
func (md *mailboxContainer) Names() []string {
files := make([]string, 0)
for file := range md.mailboxes {
files = append(files, file)
}
return files
}
func (md *mailboxContainer) Mailbox(f string) (*container, bool) {
mb, ok := md.mailboxes[f]
return mb, ok
}
func (md *mailboxContainer) Create(file string) *container {
md.mailboxes[file] = &container{filename: file}
return md.mailboxes[file]
}
func (md *mailboxContainer) Remove(file string) error {
delete(md.mailboxes, file)
return nil
}
func (md *mailboxContainer) DirectoryInfo(file string) *models.DirectoryInfo {
var exists int
if md, ok := md.Mailbox(file); ok {
exists = len(md.Uids())
}
return &models.DirectoryInfo{
Name: file,
Exists: exists,
Recent: 0,
Unseen: 0,
}
}
func (md *mailboxContainer) Copy(dest, src string, uids []models.UID) error {
srcmbox, ok := md.Mailbox(src)
if !ok {
return fmt.Errorf("source %s not found", src)
}
destmbox, ok := md.Mailbox(dest)
if !ok {
return fmt.Errorf("destination %s not found", dest)
}
for _, uidSrc := range srcmbox.Uids() {
found := false
for _, uid := range uids {
if uid == uidSrc {
found = true
break
}
}
if found {
msg, err := srcmbox.Message(uidSrc)
if err != nil {
return fmt.Errorf("could not get message with uid %s from folder %s", uidSrc, src)
}
r, err := msg.NewReader()
if err != nil {
return fmt.Errorf("could not get reader for message with uid %s", uidSrc)
}
flags, err := msg.ModelFlags()
if err != nil {
return fmt.Errorf("could not get flags for message with uid %s", uidSrc)
}
err = destmbox.Append(r, flags)
if err != nil {
return fmt.Errorf("could not append data to mbox: %w", err)
}
}
}
md.mailboxes[dest] = destmbox
return nil
}
type container struct {
filename string
messages []rfc822.RawMessage
}
func (f *container) Uids() []models.UID {
uids := make([]models.UID, len(f.messages))
for i, m := range f.messages {
uids[i] = m.UID()
}
return uids
}
func (f *container) Message(uid models.UID) (rfc822.RawMessage, error) {
for _, m := range f.messages {
if uid == m.UID() {
return m, nil
}
}
return &message{}, fmt.Errorf("uid [%s] not found", uid)
}
func (f *container) Delete(uids []models.UID) (deleted []models.UID) {
newMessages := make([]rfc822.RawMessage, 0)
for _, m := range f.messages {
del := false
for _, uid := range uids {
if m.UID() == uid {
del = true
break
}
}
if del {
deleted = append(deleted, m.UID())
} else {
newMessages = append(newMessages, m)
}
}
f.messages = newMessages
return
}
func (f *container) Append(r io.Reader, flags models.Flags) error {
data, err := io.ReadAll(r)
if err != nil {
return err
}
f.messages = append(f.messages, &message{
uid: uidFromContents(data),
flags: flags,
content: data,
})
return nil
}
func uidFromContents(data []byte) models.UID {
sum := sha256.New()
sum.Write(data)
return models.UID(hex.EncodeToString(sum.Sum(nil)))
}
// message implements the lib.RawMessage interface
type message struct {
uid models.UID
flags models.Flags
content []byte
}
func (m *message) NewReader() (io.ReadCloser, error) {
return io.NopCloser(bytes.NewReader(m.content)), nil
}
func (m *message) ModelFlags() (models.Flags, error) {
return m.flags, nil
}
func (m *message) Labels() ([]string, error) {
return nil, nil
}
func (m *message) UID() models.UID {
return m.uid
}
func (m *message) SetFlag(flag models.Flags, state bool) error {
if state {
m.flags |= flag
} else {
m.flags &^= flag
}
return nil
}
