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package commands
import (
"errors"
"io"
"os"
"os/exec"
"strings"
"git.sr.ht/~rjarry/aerc/app"
"git.sr.ht/~rjarry/aerc/config"
"git.sr.ht/~rjarry/aerc/lib/ui"
"git.sr.ht/~rjarry/aerc/log"
"git.sr.ht/~rjarry/aerc/models"
"git.sr.ht/~rjarry/go-opt"
)
type Menu struct {
ErrExit bool `opt:"-e"`
Background bool `opt:"-b"`
Accounts bool `opt:"-a"`
Directories bool `opt:"-d"`
Command string `opt:"-c"`
Xargs string `opt:"..." complete:"CompleteXargs"`
}
func init() {
Register(Menu{})
}
func (Menu) Context() CommandContext {
return GLOBAL
}
func (Menu) Aliases() []string {
return []string{"menu"}
}
func (*Menu) CompleteXargs(arg string) []string {
return FilterList(ActiveCommandNames(), arg, nil)
}
func (m Menu) Execute([]string) error {
if m.Command == "" {
m.Command = config.General.DefaultMenuCmd
}
useFallback := m.useFallback()
if m.Background && useFallback {
return errors.New("Either -c <command> or " +
"default-menu-cmd is required to run " +
"in the background.")
}
if _, _, err := ResolveCommand(m.Xargs, nil, nil); err != nil {
return err
}
lines, err := m.feedLines()
if err != nil {
return err
}
title := " :" + strings.TrimLeft(m.Xargs, ": \t") + " ... "
if useFallback {
return m.fallback(title, lines)
}
pick, err := os.CreateTemp("", "aerc-menu-*")
if err != nil {
return err
}
var proc *exec.Cmd
if strings.Contains(m.Command, "%f") {
proc = exec.Command("sh", "-c",
strings.ReplaceAll(m.Command, "%f", opt.QuoteArg(pick.Name())))
} else {
proc = exec.Command("sh", "-c", m.Command+" >&3")
proc.ExtraFiles = append(proc.ExtraFiles, pick)
}
if len(lines) > 0 {
proc.Stdin = strings.NewReader(strings.Join(lines, "\n"))
}
xargs := func(err error) {
var buf []byte
if err == nil {
_, err = pick.Seek(0, io.SeekStart)
}
if err == nil {
buf, err = io.ReadAll(pick)
}
pick.Close()
os.Remove(pick.Name())
if err != nil {
app.PushError("command failed: " + err.Error())
return
}
if len(buf) == 0 {
return
}
m.runCmd(string(buf))
}
if m.Background {
go func() {
defer log.PanicHandler()
xargs(proc.Run())
}()
} else {
term, err := app.NewTerminal(proc)
if err != nil {
return err
}
term.Focus(true)
term.OnClose = func(err error) {
app.CloseDialog()
xargs(err)
}
widget := ui.NewBox(term, title, "", app.SelectedAccountUiConfig())
app.AddDialog(app.DefaultDialog(widget))
}
return nil
}
func (m Menu) useFallback() bool {
if m.Command == "" || m.Command == "-" {
warnMsg := "no command provided, falling back on aerc's picker."
log.Warnf(warnMsg)
app.PushWarning(warnMsg)
return true
}
cmd, _, _ := strings.Cut(m.Command, " ")
_, err := exec.LookPath(cmd)
if err != nil {
warnMsg := "command '" + cmd + "' not found in PATH, " +
"falling back on aerc's picker."
log.Warnf(warnMsg)
app.PushWarning(warnMsg)
return true
}
return false
}
func (m Menu) runCmd(buffer string) {
var (
cmd Command
cmdline string
err error
)
for _, line := range strings.Split(buffer, "\n") {
line = strings.TrimSpace(line)
if line == "" {
continue
}
cmdline = m.Xargs + " " + line
cmdline, cmd, err = ResolveCommand(cmdline, nil, nil)
if err == nil {
err = ExecuteCommand(cmd, cmdline)
}
if err != nil {
app.PushError(m.Xargs + ": " + err.Error())
if m.ErrExit {
return
}
}
}
}
func (m Menu) fallback(title string, lines []string) error {
listBox := app.NewListBox(
title, lines, app.SelectedAccountUiConfig(),
func(line string) {
app.CloseDialog()
if line == "" {
return
}
m.runCmd(line)
})
listBox.SetTextFilter(func(list []string, term string) []string {
return FilterList(list, term, func(s string) string { return s })
})
widget := ui.NewBox(listBox, "", "", app.SelectedAccountUiConfig())
app.AddDialog(app.DefaultDialog(widget))
return nil
}
func (m Menu) feedLines() ([]string, error) {
var lines []string
switch {
case m.Accounts && m.Directories:
for _, a := range app.AccountNames() {
account, _ := app.Account(a)
a = opt.QuoteArg(a)
for _, d := range account.Directories().List() {
dir := account.Directories().Directory(d)
if dir != nil && dir.Role != models.QueryRole {
d = opt.QuoteArg(d)
}
lines = append(lines, a+" "+d)
}
}
case m.Accounts:
for _, account := range app.AccountNames() {
lines = append(lines, opt.QuoteArg(account))
}
case m.Directories:
account := app.SelectedAccount()
if account == nil {
return nil, errors.New("No account selected.")
}
for _, d := range account.Directories().List() {
dir := account.Directories().Directory(d)
if dir != nil && dir.Role != models.QueryRole {
d = opt.QuoteArg(d)
}
lines = append(lines, d)
}
}
return lines, nil
}
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