package main

import (
	"context"
	"os/exec"
	"path/filepath"
	"time"
)

// Notifier sends desktop notifications.
type Notifier interface {
	Notify(title, body string) error
}

// ExecNotifier calls notify-send via os/exec.
type ExecNotifier struct{}

func (n *ExecNotifier) Notify(title, body string) error {
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	return exec.CommandContext(ctx, "notify-send",
		"--urgency=critical",
		"--app-name=vmux",
		"--expire-time=10000",
		title,
		body,
	).Run()
}

// NullNotifier discards all notifications (for tests and focus mode).
type NullNotifier struct{}

func (n *NullNotifier) Notify(_, _ string) error {
	return nil
}

// shortName returns a human-readable short name for a session.
// Prefers Label if set, otherwise uses the last component of Cwd.
func shortName(s SessionInfo) string {
	if s.Label != "" {
		return s.Label
	}
	return filepath.Base(s.Cwd)
}