added comments to the code

kunst

@@ -2,19 +2,23 @@
 
 COVER=/tmp/kunst.jpg
 MUSIC_DIR=~/Music/
-CURRENT=$(mpc current -f %file%)
 
+# This is a base64 endcoded image which will be used if
+# if the file does not have an emmbeded album art
 read -d '' MUSIC_NOTE << EOF
 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
 EOF
 
+
 update_cover() {
 	# extract the album art from the mp3 file and dont show the messsy
 	# output of ffmpeg
 	ffmpeg -i "$MUSIC_DIR$(mpc current -f %file%)" $COVER -y &> /dev/null
-	
+
+    # get the status of the previous command
 	STATUS=$?
-	
+
+    # check if the file has a embbeded album art
 	if [ $STATUS -eq 0 ];then
 		echo "kunst: extracted album art"
 		ARTLESS=false
@@ -35,23 +39,35 @@ main() {
 	update_cover
 
 	if [ $ARTLESS == true ];then
+	    # change the path to COVER because the music note
+		# image is a png not jpg
 	    COVER=/tmp/kunst.png
+
+		# decode the base64 encoded image and save it
+		# to /tmp/kunst.png
 		echo $MUSIC_NOTE | base64 --decode > $COVER
 	fi
 	
 	echo "kunst: swapped album art to $(mpc current)"
 
+	# display the album art using sxiv
 	sxiv -g 250x250 -b $COVER &
 
-
 	while true; do
+	    # waiting for an event from mpd; play/pause/next/previous
+		# this is lets kunst use less CPU :)
 	    mpc idle &> /dev/null
 		echo "kunst: received event from mpd"
 
 		update_cover
 
 		if [ $ARTLESS == true ];then
+			# change the path to COVER because the music note
+			# image is a png not jpg
 			COVER=/tmp/kunst.png
+
+			# decode the base64 encoded image and save it
+			# to /tmp/kunst.png
 			echo $MUSIC_NOTE | base64 --decode > $COVER
 		fi