refactor: implement cross-platform abstraction for process management, media control, and startup configuration (TESTING)

internal/linux/media.go

@@ -0,0 +1,42 @@
+//go:build linux
+package linux
+
+import (
+	"os/exec"
+	"wis-free-v3/internal/logger"
+)
+
+// IsPlaying checks if media is currently playing using playerctl
+func IsPlaying() bool {
+	cmd := exec.Command("playerctl", "status")
+	out, err := cmd.Output()
+	if err != nil {
+		return false
+	}
+	return string(out) == "Playing\n"
+}
+
+// TogglePlayPause sends the play-pause command via playerctl
+func TogglePlayPause() {
+	cmd := exec.Command("playerctl", "play-pause")
+	err := cmd.Run()
+	if err != nil {
+		logger.Error("Failed to toggle media on Linux: %v", err)
+	}
+}
+
+// PauseMedia checks if playing, pauses if so, returns whether we paused
+func PauseMedia() bool {
+	wasPlaying := IsPlaying()
+	if wasPlaying {
+		TogglePlayPause()
+	}
+	return wasPlaying
+}
+
+// ResumeMedia resumes only if we paused it
+func ResumeMedia(wasPaused bool) {
+	if wasPaused {
+		TogglePlayPause()
+	}
+}