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package editor
import (
"errors"
"os"
"os/exec"
"path/filepath"
"strings"
)
// Resolve returns the editor command from HEXAI_EDITOR or EDITOR.
func Resolve() (string, error) {
ed := strings.TrimSpace(os.Getenv("HEXAI_EDITOR"))
if ed == "" {
ed = strings.TrimSpace(os.Getenv("EDITOR"))
}
if ed == "" {
return "", errors.New("no editor configured (set HEXAI_EDITOR or EDITOR)")
}
return ed, nil
}
// RunEditor is the seam that invokes the editor on the given file path.
// Override in tests to avoid launching a real editor.
var RunEditor = func(editor, path string) error {
cmd := exec.Command(editor, path)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
return cmd.Run()
}
// OpenTempAndEdit creates a temporary .md file, writes initial content if provided,
// opens it in the resolved editor, then reads the final content and removes the file.
// Returns the trimmed content.
func OpenTempAndEdit(initial []byte) (string, error) {
ed, err := Resolve()
if err != nil {
return "", err
}
// Create temp file under system temp dir; ensure .md suffix
dir := os.TempDir()
f, err := os.CreateTemp(dir, "hexai-*.md")
if err != nil {
return "", err
}
path := f.Name()
defer func() { _ = os.Remove(path) }()
if len(initial) > 0 {
if _, err := f.Write(initial); err != nil {
_ = f.Close()
return "", err
}
}
if err := f.Sync(); err != nil {
_ = f.Close()
return "", err
}
if err := f.Close(); err != nil {
return "", err
}
if err := RunEditor(ed, path); err != nil {
return "", err
}
b, err := os.ReadFile(filepath.Clean(path))
if err != nil {
return "", err
}
return strings.TrimSpace(string(b)), nil
}
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