notify.go

package ppow

import (
	"fmt"
	"os/exec"
)

const prog = "ppow"

func hasExecutable(name string) bool {
	_, err := exec.LookPath(name)
	if err != nil {
		return false
	}
	return true
}

// A Notifier notifies
type Notifier interface {
	Push(title string, content string, icon string)
}

// BeepNotifier just emits a beep on the terminal
type BeepNotifier struct{}

// Push implements Notifier
func (*BeepNotifier) Push(string, string, string) {
	fmt.Print("\a")
}

// GrowlNotifier is a notifier for Growl
type GrowlNotifier struct {
}

// Push implements Notifier
func (GrowlNotifier) Push(title string, text string, iconPath string) {
	cmd := exec.Command(
		"growlnotify", "-n", prog, "-d", prog, "-m", text, prog,
	)
	go cmd.Run()
}

// LibnotifyNotifier is a notifier for lib-notify
type LibnotifyNotifier struct {
}

// Push implements Notifier
func (LibnotifyNotifier) Push(title string, text string, iconPath string) {
	cmd := exec.Command(
		"notify-send", prog, text,
	)
	go cmd.Run()
}

// PlatformNotifier finds a notifier for this platform
func PlatformNotifier() Notifier {
	if hasExecutable("growlnotify") {
		return &GrowlNotifier{}
	} else if hasExecutable("notify-send") {
		return &LibnotifyNotifier{}
	}
	return nil
}