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package msg
import (
"bufio"
"errors"
"fmt"
"io"
gomail "net/mail"
"strings"
"git.sr.ht/~sircmpwn/getopt"
"github.com/emersion/go-message"
_ "github.com/emersion/go-message/charset"
"github.com/emersion/go-message/mail"
"git.sr.ht/~sircmpwn/aerc/models"
"git.sr.ht/~sircmpwn/aerc/widgets"
)
type reply struct{}
func init() {
register(reply{})
}
func (_ reply) Aliases() []string {
return []string{"reply", "forward"}
}
func (_ reply) Complete(aerc *widgets.Aerc, args []string) []string {
return nil
}
func (_ reply) Execute(aerc *widgets.Aerc, args []string) error {
opts, optind, err := getopt.Getopts(args, "aq")
if err != nil {
return err
}
if optind != len(args) {
return errors.New("Usage: reply [-aq]")
}
var (
quote bool
replyAll bool
)
for _, opt := range opts {
switch opt.Option {
case 'a':
replyAll = true
case 'q':
quote = true
}
}
widget := aerc.SelectedTab().(widgets.ProvidesMessage)
acct := widget.SelectedAccount()
if acct == nil {
return errors.New("No account selected")
}
conf := acct.AccountConfig()
us, _ := gomail.ParseAddress(conf.From)
store := widget.Store()
if store == nil {
return errors.New("Cannot perform action. Messages still loading")
}
msg, err := widget.SelectedMessage()
if err != nil {
return err
}
acct.Logger().Println("Replying to email " + msg.Envelope.MessageId)
var (
to []string
cc []string
toList []*models.Address
)
if args[0] == "reply" {
if len(msg.Envelope.ReplyTo) != 0 {
toList = msg.Envelope.ReplyTo
} else {
toList = msg.Envelope.From
}
for _, addr := range toList {
if addr.Name != "" {
to = append(to, fmt.Sprintf("%s <%s@%s>",
addr.Name, addr.Mailbox, addr.Host))
} else {
to = append(to, fmt.Sprintf("<%s@%s>", addr.Mailbox, addr.Host))
}
}
if replyAll {
for _, addr := range msg.Envelope.Cc {
cc = append(cc, addr.Format())
}
for _, addr := range msg.Envelope.To {
address := fmt.Sprintf("%s@%s", addr.Mailbox, addr.Host)
if address == us.Address {
continue
}
to = append(to, addr.Format())
}
}
}
var subject string
if args[0] == "forward" {
subject = "Fwd: " + msg.Envelope.Subject
} else {
if !strings.HasPrefix(msg.Envelope.Subject, "Re: ") {
subject = "Re: " + msg.Envelope.Subject
} else {
subject = msg.Envelope.Subject
}
}
composer := widgets.NewComposer(
aerc.Config(), acct.AccountConfig(), acct.Worker()).
Defaults(map[string]string{
"To": strings.Join(to, ", "),
"Cc": strings.Join(cc, ", "),
"Subject": subject,
"In-Reply-To": msg.Envelope.MessageId,
})
if args[0] == "reply" {
composer.FocusTerminal()
}
addTab := func() {
tab := aerc.NewTab(composer, subject)
composer.OnSubjectChange(func(subject string) {
if subject == "" {
tab.Name = "New email"
} else {
tab.Name = subject
}
tab.Content.Invalidate()
})
}
if args[0] == "forward" {
// TODO: something more intelligent than fetching the 1st part
// TODO: add attachments!
store.FetchBodyPart(msg.Uid, []int{1}, func(reader io.Reader) {
header := message.Header{}
header.SetText(
"Content-Transfer-Encoding", msg.BodyStructure.Encoding)
header.SetContentType(
msg.BodyStructure.MIMEType, msg.BodyStructure.Params)
header.SetText("Content-Description", msg.BodyStructure.Description)
entity, err := message.New(header, reader)
if err != nil {
// TODO: Do something with the error
addTab()
return
}
mreader := mail.NewReader(entity)
part, err := mreader.NextPart()
if err != nil {
// TODO: Do something with the error
addTab()
return
}
pipeout, pipein := io.Pipe()
scanner := bufio.NewScanner(part.Body)
go composer.SetContents(pipeout)
// TODO: Let user customize the date format used here
io.WriteString(pipein, fmt.Sprintf("Forwarded message from %s on %s:\n\n",
msg.Envelope.From[0].Name,
msg.Envelope.Date.Format("Mon Jan 2, 2006 at 3:04 PM")))
for scanner.Scan() {
io.WriteString(pipein, fmt.Sprintf("%s\n", scanner.Text()))
}
pipein.Close()
pipeout.Close()
addTab()
})
} else {
if quote {
var (
path []int
part *models.BodyStructure
)
if len(msg.BodyStructure.Parts) != 0 {
part, path = findPlaintext(msg.BodyStructure, path)
}
if part == nil {
part = msg.BodyStructure
path = []int{1}
}
store.FetchBodyPart(msg.Uid, path, func(reader io.Reader) {
header := message.Header{}
header.SetText(
"Content-Transfer-Encoding", part.Encoding)
header.SetContentType(part.MIMEType, part.Params)
header.SetText("Content-Description", part.Description)
entity, err := message.New(header, reader)
if err != nil {
// TODO: Do something with the error
addTab()
return
}
mreader := mail.NewReader(entity)
part, err := mreader.NextPart()
if err != nil {
// TODO: Do something with the error
addTab()
return
}
pipeout, pipein := io.Pipe()
scanner := bufio.NewScanner(part.Body)
go composer.SetContents(pipeout)
// TODO: Let user customize the date format used here
io.WriteString(pipein, fmt.Sprintf("On %s %s wrote:\n",
msg.Envelope.Date.Format("Mon Jan 2, 2006 at 3:04 PM"),
msg.Envelope.From[0].Name))
for scanner.Scan() {
io.WriteString(pipein, fmt.Sprintf("> %s\n", scanner.Text()))
}
pipein.Close()
pipeout.Close()
addTab()
})
} else {
addTab()
}
}
return nil
}
func findPlaintext(bs *models.BodyStructure,
path []int) (*models.BodyStructure, []int) {
for i, part := range bs.Parts {
cur := append(path, i+1)
if part.MIMEType == "text" && part.MIMESubType == "plain" {
return part, cur
}
if part.MIMEType == "multipart" {
if part, path := findPlaintext(part, cur); path != nil {
return part, path
}
}
}
return nil, nil
}
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