Rename FLAC files based on its metadata

rename-flac

#! /bin/bash

################################################################################
#
# TL; DR
# This script rename filename.flac to
#   <Album Artist>/<Album Title>/Disc <Disc Number> - Track <Track Number>.flac
#
# Usage:
#   rename-flac [filename]
#
# Dependencies:
#   - metaflac
#   - unaccent
#
################################################################################

if [[ -z $MUSIC_LIBRARY ]]; then
   MUSIC_LIBRARY=$(echo "${HOME}/pCloud Drive/Music")
fi

# get metadatas
ALBUM_ARTIST="$(metaflac --show-tag=ALBUMARTIST "$1" | cut -d= -f2 | unaccent utf8)"
ALBUM_TITLE="$(metaflac --show-tag=ALBUM "$1" | cut -d= -f2 | unaccent utf8)"
DISC_NUMBER="$(metaflac --show-tag=DISCNUMBER "$1" | cut -d= -f2)"
TRACK_NUMBER="$(metaflac --show-tag=TRACKNUMBER "$1" | cut -d= -f2)"

# rename some special characters: /, :
ALBUM_ARTIST="${ALBUM_ARTIST//\//;}"
ALBUM_ARTIST="${ALBUM_ARTIST//:/ -}"
ALBUM_TITLE="${ALBUM_TITLE//\//;}"
ALBUM_TITLE="${ALBUM_TITLE//:/ -}"

new_dir="${MUSIC_LIBRARY}/${ALBUM_ARTIST}/${ALBUM_TITLE}"
new_name="Disc ${DISC_NUMBER:-1} - Track ${TRACK_NUMBER}.flac"

# echo "${new_dir}/${new_name}"

mkdir -p "${new_dir}"
mv "$1" "${new_dir}/${new_name}"