Show music info(with cover) for mpd. Will show gray cover, when paused. defaultimage can be found here: https://williamjacoby.net/files/unknown.jpg

mpd-notify.sh

#!/bin/bash

expireTime="9200"
mpddir="/media/william/NewData/Music/MP3B/"
defaultimage="$mpddir/unknown.jpg"

update_cover() {
  path=$mpddir$(mpc -f %file% current)
  album=$(mpc -f %file% current)
  ffmpeg -loglevel quiet -y -i "$path" /tmp/cover
  if [[ $? -ne 0 ]] ; then
      covers="$(find "$(dirname "$path")" -type d -exec find {} -maxdepth 1 -type f -iregex ".*/.*\(${album}\|cover\|folder\|artwork\|front\).*[.]\(jpe?g\)" \; )"
      src="$(echo -n "$covers" | head -n1)"
      if [[ -f $src ]] ; then
        /bin/cp "$src" /tmp/cover
      else
        cp "$defaultimage" /tmp/cover
      fi
  fi
}

# Remove extra spaces and escape single quotes
sanitize_string() {
  # Replaces single quotes with escaped ones and trims leading/trailing spaces
  echo "$1" | sed "s/'/\\\'/g" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//'
}

while true; do
  mpc -q || exit 1
  [[ $(mpc idle) = "player" ]] || continue

  update_cover

  # Capture artist, title, and album from the current song using mpc
  song_info=$(mpc current -f '%artist% * %title% * %album%')
  artist=$(echo "$song_info" | cut -d '*' -f 1)
  title=$(echo "$song_info" | cut -d '*' -f 2)
  album=$(echo "$song_info" | cut -d '*' -f 3)

  # Sanitize artist, title, and album to escape single quotes and trim spaces
  artist=$(sanitize_string "$artist")
  title=$(sanitize_string "$title")
  album=$(sanitize_string "$album")

  # Get length and status
  status_output=$(mpc status)
  length=$(echo "$status_output" | sed '2!D ; s/\[.*  //')
  status=$(echo "$status_output" | grep -o '\[.*\]' | tr -d "[]")

  category="mpd"
  if [[ ${status} = "paused" ]]; then
    category="mpd-paused"
    convert "/tmp/cover" -colorspace Gray "/tmp/cover"
  fi

  # Send notification without formatting
  notify-send --expire-time="${expireTime}" -c ${category} -i "/tmp/cover" "MPD" \
              "Title: ${title}\nArtist: ${artist}\nAlbum: ${album}\nStatus: ${length}"
done;

Fixed: displaying extra spaces and escaped single quotes