mpdignore.sh~

#!/bin/bash

scriptname=$(realpath "$0")

function editscript(){ if [ "$1" = "edit" ] || [ "$1" = "nano" ]; then (/usr/bin/nano "$scriptname"); exit; fi ; }

editscript "$1"

#pldir="/var/lib/mpd/playlists"          # defines playlist directory; default = /var/lib/mpd/playlists
watchfile=".mpdignore.m3u"		# defines the watched playlist; default = .mpdignore.m3u
mpdconf="/etc/mpd.conf"			# defines mpd.conf location; default = /etc/mpd.conf
mpduser="mpd"				# defines the user mpd service runs as; default = mpd
mpdgroup="media"			# defines the group mpd service runs as; default = media
ignoredm3u="mpdignored.m3u"		# defines the playlist of songs ignored by mpdignore; default = mpdignored.m3u

if [[ -f "$mpdconf" ]]			# defines the location of your mpd music directory; this is defined in the mpd.conf file found at /etc/mpd.conf by default
 then
   musicdir="$(grep -v "^#" "$mpdconf" | grep -v "^$" | grep music_directory)"
   musicdir="${musicdir%*\"}"
   musicdir="${musicdir#*\"}"
   musicdir="${musicdir%/}"
 else
   musicdir="/library/music"		# manually code the location if /etc/mpd.conf doesn't exist.
fi

if [[ -f "$mpdconf" ]]			# defines the location of your mpd playlist directory; this is defined in the mpd.conf file found at /etc/mpd.conf by default
 then
   pldir="$(grep -v "^#" "$mpdconf" | grep -v "^$" | grep playlist_directory)"
   pldir="${pldir%*\"}"
   pldir="${pldir#*\"}"
   pldir="${pldir%/}"
 else
   pldir="/var/lib/mpd/playlists"	# manually code the location if /etc/mpd.conf doesn't exist.
fi

if [[ -f "$mpdconf" ]]			# defines the location of your mpd logfile path; this is defined in the mpd.conf file found at /etc/mpd.conf by default
 then
   mpdlog="$(grep -v "^#" "$mpdconf" | grep -v "^$" | grep log_file)"
   mpdlog="${mpdlog%*\"}"
   mpdlog="${mpdlog#*\"}"
   mpdlog="${mpdlog%/}"
 else
   mpdlog="/var/log/mpd/mpd.log"	# manually code the location if /etc/mpd.conf doesn't exist.
fi

watchfile="$pldir/$watchfile"		# sets full path of watchfile
ignoredm3u="$pldir/$ignoredm3u"		# sets full path of ignoredm3u


printf "###############################################################entering while loop ################################################################"

while read -r line
 do
  song="${line##*/}"
  songdir="${line%/*}"
  ignoredir="$musicdir/$songdir"
  if [[ -f "$ignoredir"/.mpdignore ]]
     then
        cp "$ignoredir"/.mpdignore "$ignoredir"/.mpdignore~
  fi
											#mpd does not recognize file names with square brackets in .mpdignore files and the
  if [[ "$song" =~ \[ ]] || [[ "$song" =~ \] ]]						#individual square bracket characters must be escaped such that they will be recognized
     then
        song=$(sed -e 's/\\\]/\]/g' -e 's/\\\[/\[/g' -e 's/\[/\\\[/g' -e 's/\]/\\\]/g' <<< "$song" )
  fi

  printf "%s\n# added on %s\n" "$song" "$(date)" >> "$ignoredir"/.mpdignore
  printf '%s has been added to .mpdignore in %s\n' "$song" "$ignoredir"
  printf '%s\n' "$line" >> "$ignoredm3u"
  printf '%s\n' "$(date '+%b %d %H:%M : player: ignored ')\"$line\"" | cat >> "$mpdlog"
 done < "$watchfile"

echo "#last run `date`" >> "$ignoredm3u"

> "$watchfile"										# clears the watchfile after run
chmod g+w "$ignoredir"/.mpdignore "$ignoredm3u" "$watchfile"				# grants group access to the watchfile, ignoredm3u, and the created/updated .mpdignore file
chown "$mpduser":"$mpdgroup" "$ignoredir"/.mpdignore "$ignoredm3u" "$watchfile"		# changes ownership of the above files to mpd and its goup (e.g., so the ignored playlist is readable by mpd)