helm/shell/+mpd/bin/notify-song.sh

#!/usr/bin/env bash

# A non-interactive script that creates notifications (libnotify on Linux,
# native notifications on MacOS), announcing the currently playing song. Used by
# ncmpcpp.

_color() { printf '<span fgcolor="%s">%s</span>' "$1" "$2"; }

if ! pgrep mpd >/dev/null; then
    >&2 echo "mpd isn't running."
    exit 1
fi

info=$(mpc current -f ";%artist%;%album%;%title%;%file%")
if [[ ${info:0:1} != ";" ]]; then
    >&2 echo "nothing is playing."
    exit 1
fi

IFS=';' read -r _ artist album title file <<< "$info"

artist="${artist:-$(_color "#757575" "No Artist")}"
album="${album:-$(_color "#757575" "No Album")}"
title="${title:-$(_color "#757575" "Untitled")}"
rating=

case $(grep "$file" ~/music/.db/playlists/*-star.m3u) 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="☆"
    if [[ $OSTYPE == linux* ]]; then
        star_filled_icon=$(_color "#8fb1cd" "$star_filled_icon")
        star_empty_icon=$(_color "#666666" "$star_empty_icon")
    fi

    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

case $OSTYPE in
    darwin*)
        [[ $rating ]] && rating="[$rating] "
        killall terminal-notifier
        terminal-notifier -title "$rating$title" -message "by $artist :: $album" -appIcon "/Applications/iTunes.app/Contents/Resources/iTunes.icns" &
        ;;
    linux*)
        [[ $rating ]] && rating="$rating\n"
        notify-send --icon="media-playback-start" --app-name="ncmpcpp" "$rating$title" "${artist}\n<i>${album}</i>" &
        ;;
esac >/dev/null 2>&1

exit