Split command executed in a separate file

player/player.go

@@ -136,7 +136,7 @@ func (p *Player) launchAction(cfg *config.Config, a *reveil.Action) (err error)
 }
 
 func (p *Player) playFile(filepath string) (err error) {
-	p.currentCmd = exec.Command("paplay", filepath)
+	p.currentCmd = exec.Command(playCommand, filepath)
 	if err = p.currentCmd.Start(); err != nil {
 		log.Println("Running paplay err: ", err.Error())
 		p.currentCmdCh <- true
@@ -270,7 +270,7 @@ func (p *Player) NextTrack() {
 }
 
 func (p *Player) SetVolume(volume uint16) error {
-	cmd := exec.Command("amixer", "-D", "pulse", "set", "Master", fmt.Sprintf("%d", volume))
+	cmd := exec.Command("amixer", "-D", mixerCard, "set", mixerName, fmt.Sprintf("%d", volume))
 	return cmd.Run()
 }
 

player/player_pulse.go

@@ -0,0 +1,9 @@
+//go:build pulse
+
+package player
+
+const (
+	playCommand = "paplay"
+	mixerCard   = "pulse"
+	mixerName   = "Master"
+)