shell/mpd (notify-song.sh): add ratings; fix artist-only message; more reliable on macos

shell/mpd/bin/notify-song.sh

@@ -5,7 +5,7 @@ if ! pgrep mpd >/dev/null; then
     exit 1
 fi
 
-info=$(mpc -f ";%artist%;%album%;%title%")
+info=$(mpc -f ";%artist%;%album%;%title%;%file%")
 if [[ -z $info || ${info:0:1} != ";" ]]; then
     >&2 echo "nothing is playing."
     exit
@@ -14,16 +14,44 @@ fi
 artist=$(awk -F';' '{ print $2 }' <<<"$info")
 album=$(awk -F';' '{ print $3 }' <<<"$info")
 title=$(awk -F';' '{ print $4 }' <<<"$info")
+file=$(awk -F';' '{ print $5 }' <<<"$info")
 
 artist="${artist:-No Artist}"
-album="${artist:-No Album}"
+album="${album:-No Album}"
-title="${artist:-Untitled}"
+title="${title:-Untitled}"
+rating=
+
+stars=$(cd ~/music/.db/playlists/ && grep "$file" ./*-star.m3u)
+if [[ $stars ]]; then
+    case $stars in
+        ./1-star.m3u*) starn=1 ;;
+        ./2-star.m3u*) starn=2 ;;
+        ./3-star.m3u*) starn=3 ;;
+        ./4-star.m3u*) starn=4 ;;
+        ./5-star.m3u*) starn=5 ;;
+    esac
+
+    if [[ $starn ]]; then
+        star_filled_icon="★"
+        star_empty_icon="☆"
+
+        for ((i=1;i<=5;i++)); do
+            if (( "$starn" >= "$i" )); then
+                rating="${rating}${star_filled_icon}"
+            else
+                rating="${rating}${star_empty_icon}"
+            fi
+        done
+    fi
+fi
 
 case $OSTYPE in
     darwin*)
-        terminal-notifier -title "$title" -message "by $artist :: $album" -appIcon "/Applications/iTunes.app/Contents/Resources/iTunes.icns"
+        rating="[$rating] "
+        killall terminal-notifier
+        terminal-notifier -title "$rating$title" -message "by $artist :: $album" -appIcon "/Applications/iTunes.app/Contents/Resources/iTunes.icns"
         ;;
     linux*)
-        notify-send --icon="media-playback-start" --app-name="ncmpcpp" "$title" "${artist}\n<i>${album}</i>"
+        notify-send --icon="media-playback-start" --app-name="ncmpcpp" "$title" "${artist}\n<i>${album}</i>\n$rating"
         ;;
 esac