Splitting *.flac files with *.cue and creating mp3/ogg files

ConvertFlacToMp3.sh

#!/bin/bash          

# This script takes all flac files in a folder, splits them according to cue file.
# Then converts all splitted flac files to mp3 (or ogg) files. 
# Tags from the cue file kept in mp3 files.

# You need to install these packages in order to use this script:
# - cuetools
# - shntool
# - ffmpeg

# Change these settings as you wish:
# #################### #
type=ogg
folder=out
quality=7
filename="%track% - %title%"
remove_flac=true
backup=true
# #################### #

# ############################################################################ #
# type          -- output type, options are:
#                  ogg
#                  mp3
# folder        -- folder that mp3/ogg files will be created in
# quality       -- mp3 quality options are:
#                   320k
#                   [0-9] 0 is best(~245 kbit/s), 9 is worst quality(~65 kbit/s)
#               -- ogg quality options are:
#                   [0-10] 0 being lowest, 10 highest quality
#                   
# filename      -- mp3 file name template.
#                  %artist%, %album%, %title%, %track%
# 
# remove_flac   -- deletes created flac files. 
#                  (It will not delete the orginal flac file)
# backup        -- creates a folder name "flac", moves the flac and cue file to 
#                  that folder with .backup extension
#                  moves all mp3 files to root folder
# ############################################################################ #


flac_out=split-track

# Create folder
mkdir $folder
cd $folder

# Split flac files
cuebreakpoints ../*.cue | shnsplit -o flac ../*.flac

# Copy metadata from cue file
cuetag.sh ../*.cue $flac_out*.flac

# Create mp3 files
codec=""
if [ $type = mp3 ]; then
    codec="libmp3lame"
else
    codec="libvorbis"
fi

quality_fixed=""
if [ $quality = 320k ]; then
    quality_fixed='-b:a 320k'
else
    quality_fixed="-qscale:a $quality"
fi

for flac in $flac_out*.flac; do
    ffmpeg -i $flac -codec:a $codec $quality_fixed `basename $flac .flac`.$type
done

# Remove generated flac files
if [ $remove_flac = true ]; then
    rm *flac
fi

# Rename mp3 files
function getTag() { echo $(ffprobe -loglevel error -show_entries format_tags="$1" -of default=noprint_wrappers=1:nokey=1 "$2"); }
for file in *$type; do
    # BTW, I'm not a bash pro
    artist=$(getTag artist "$file")
    album=$(getTag album "$file")
    title=$(getTag title "$file")
    track=$(getTag track "$file")
    file_name=${filename/\%artist\%/$artist}
    file_name=${file_name/\%album\%/$album}
    file_name=${file_name/\%title\%/$title}
    file_name=${file_name/\%track\%/$track}
    mv "$file" "$file_name.$type"
done

if [ $backup = true ] ; then
    cd ..
    mkdir flac
    mv *.flac flac
    mv *.cue flac
    rm *.log
    mv $folder/* .
    rm -rf $folder
    cd flac
    rename .flac .flac.backup *.flac
    rename .cue .cue.backup *.cue
fi