aerc/commands/msg/reply.go

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package msg
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import (
"bytes"
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"errors"
"fmt"
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"io"
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"strings"
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"git.sr.ht/~sircmpwn/getopt"
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"git.sr.ht/~sircmpwn/aerc/lib"
"git.sr.ht/~sircmpwn/aerc/lib/format"
"git.sr.ht/~sircmpwn/aerc/models"
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"git.sr.ht/~sircmpwn/aerc/widgets"
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)
type reply struct{}
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func init() {
register(reply{})
}
func (reply) Aliases() []string {
return []string{"reply"}
}
func (reply) Complete(aerc *widgets.Aerc, args []string) []string {
return nil
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}
func (reply) Execute(aerc *widgets.Aerc, args []string) error {
opts, optind, err := getopt.Getopts(args, "aqT:")
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if err != nil {
return err
}
if optind != len(args) {
return errors.New("Usage: reply [-aq -T <template>]")
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}
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var (
quote bool
replyAll bool
template string
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)
for _, opt := range opts {
switch opt.Option {
case 'a':
replyAll = true
case 'q':
quote = true
case 'T':
template = opt.Value
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}
}
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widget := aerc.SelectedTab().(widgets.ProvidesMessage)
acct := widget.SelectedAccount()
if acct == nil {
return errors.New("No account selected")
}
conf := acct.AccountConfig()
from, err := format.ParseAddress(conf.From)
if err != nil {
return err
}
aliases, err := format.ParseAddressList(conf.Aliases)
if err != nil {
return err
}
store := widget.Store()
if store == nil {
return errors.New("Cannot perform action. Messages still loading")
}
msg, err := widget.SelectedMessage()
if err != nil {
return err
}
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// figure out the sending from address if we have aliases
if len(aliases) != 0 {
rec := newAddrSet()
rec.AddList(msg.Envelope.To)
rec.AddList(msg.Envelope.Cc)
// test the from first, it has priority over any present alias
if rec.Contains(from) {
// do nothing
} else {
for _, a := range aliases {
if rec.Contains(a) {
from = a
break
}
}
}
}
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var (
to []*models.Address
cc []*models.Address
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)
recSet := newAddrSet() // used for de-duping
if len(msg.Envelope.ReplyTo) != 0 {
to = msg.Envelope.ReplyTo
} else {
to = msg.Envelope.From
}
recSet.AddList(to)
if replyAll {
// order matters, due to the deduping
// in order of importance, first parse the To, then the Cc header
// we add our from address, so that we don't self address ourselves
recSet.Add(from)
envTos := make([]*models.Address, 0, len(msg.Envelope.To))
for _, addr := range msg.Envelope.To {
if recSet.Contains(addr) {
continue
}
envTos = append(envTos, addr)
}
recSet.AddList(envTos)
to = append(to, envTos...)
for _, addr := range msg.Envelope.Cc {
//dedupe stuff from the to/from headers
if recSet.Contains(addr) {
continue
}
cc = append(cc, addr)
}
recSet.AddList(cc)
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}
var subject string
if !strings.HasPrefix(strings.ToLower(msg.Envelope.Subject), "re: ") {
subject = "Re: " + msg.Envelope.Subject
} else {
subject = msg.Envelope.Subject
}
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defaults := map[string]string{
"To": format.FormatAddresses(to),
"Cc": format.FormatAddresses(cc),
"From": from.Format(),
"Subject": subject,
"In-Reply-To": msg.Envelope.MessageId,
}
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original := models.OriginalMail{}
addTab := func() error {
if template != "" {
original.From = format.FormatAddresses(msg.Envelope.From)
original.Date = msg.Envelope.Date
}
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composer, err := widgets.NewComposer(aerc, acct, aerc.Config(),
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acct.AccountConfig(), acct.Worker(), template, defaults, original)
if err != nil {
aerc.PushError("Error: " + err.Error())
return err
}
if args[0] == "reply" {
composer.FocusTerminal()
}
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tab := aerc.NewTab(composer, subject)
composer.OnHeaderChange("Subject", func(subject string) {
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if subject == "" {
tab.Name = "New email"
} else {
tab.Name = subject
}
tab.Content.Invalidate()
})
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composer.OnClose(func(c *widgets.Composer) {
if c.Sent() {
store.Answered([]uint32{msg.Uid}, true, nil)
}
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})
return nil
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}
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if quote {
if template == "" {
template = aerc.Config().Templates.QuotedReply
}
part := lib.FindPlaintext(msg.BodyStructure, nil)
if part == nil {
// mkey... let's get the first thing that isn't a container
// if that's still nil it's either not a multipart msg (ok) or
// broken (containers only)
part = lib.FindFirstNonMultipart(msg.BodyStructure, nil)
}
store.FetchBodyPart(msg.Uid, part, func(reader io.Reader) {
buf := new(bytes.Buffer)
buf.ReadFrom(reader)
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original.Text = buf.String()
if len(msg.BodyStructure.Parts) == 0 {
original.MIMEType = fmt.Sprintf("%s/%s",
msg.BodyStructure.MIMEType, msg.BodyStructure.MIMESubType)
} else {
// TODO: still will be "multipart/mixed" for mixed mails with
// attachments, fix this after aerc could handle responding to
// such mails
original.MIMEType = fmt.Sprintf("%s/%s",
msg.BodyStructure.Parts[0].MIMEType,
msg.BodyStructure.Parts[0].MIMESubType)
}
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addTab()
})
return nil
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} else {
return addTab()
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}
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}
type addrSet map[string]struct{}
func newAddrSet() addrSet {
s := make(map[string]struct{})
return addrSet(s)
}
func (s addrSet) Add(a *models.Address) {
s[a.Address] = struct{}{}
}
func (s addrSet) AddList(al []*models.Address) {
for _, a := range al {
s[a.Address] = struct{}{}
}
}
func (s addrSet) Contains(a *models.Address) bool {
_, ok := s[a.Address]
return ok
}