avoid unneccessary commands

main.go

@@ -19,7 +19,6 @@ import (
 
 	_ "image/gif"
 	"image/jpeg"
-	_ "image/jpeg"
 	_ "image/png"
 )
 
@@ -29,10 +28,18 @@ const (
 )
 
 func main() {
+	prevFilepath := ""
 	for {
 		c := exec.Command("cmus-remote", "-Q")
 		o, _ := c.Output()
 		remoteResp := strings.Split(string(o), "\n")
+
+		filepath, err := getAttribute(remoteResp, "file ")
+		if err != nil {
+			log.Fatal(err.Error())
+		}
+
+		if filepath != prevFilepath {
 			//Album
 			album, err := getAttribute(remoteResp, "tag album ")
 			if err != nil {
@@ -49,11 +56,7 @@ func main() {
 				title = "Unknown"
 			}
 
-		filepath, err := getAttribute(remoteResp, "file ")
-		if err != nil {
-			log.Fatal(err.Error())
-		}
-
+			// Image
 			img := make([]byte, 0)
 			if strings.HasSuffix(filepath, ".flac") {
 				img, err = getFlacArt(filepath)
@@ -68,6 +71,7 @@ func main() {
 			} else {
 				img = defaultArt()
 			}
+
 			imgBuff := bytes.NewBuffer(img)
 
 			imgOrig, _, err := image.Decode(imgBuff)
@@ -85,6 +89,8 @@ func main() {
 			writeTxt("SongTitle", title)
 			writeJpg("AlbumArt", img)
 
+		}
+		prevFilepath = filepath
 		time.Sleep(TIMER * time.Second)
 	}
 }