Yatour YT-M06 file preparation script

#!/usr/bin/env bash
#Created by Artsiom Dziavitski

MURANO_DIR="${2}"
WRK_DIR=""
MAX_BITRATE="256"

func_setnum () {
local num="1"
local fname=""
for file in "${WRK_DIR}"/*
do
    echo $num
    ls -al "${file}"
    fname=`basename "${file}"`
    echo "${fname}"
    if [ $num -le "9" ]
        then {
            if [ $(file "${file}"  | sed 's/.*, \(.*\)kbps.*/\1/' | tr -d " ") -gt "${MAX_BITRATE}" ] || ! [[ $yournumber =~ $re ]]
            then {
                if ffmpeg -i "${file}" -codec:a libmp3lame -b:a "${MAX_BITRATE}k" -vsync 2 -vn "${WRK_DIR}"/00"$num"_"${fname}"
                    then rm -f "${file}"
                    else mv "${file}" "${WRK_DIR}"/00"$num"_"${fname}"
                fi
            }
            else {
                 mv "${file}" "${WRK_DIR}"/00"$num"_"${fname}"
            }
            fi
        }
    else {
    if [ $(file "${file}"  | sed 's/.*, \(.*\)kbps.*/\1/' | tr -d " ") -gt "${MAX_BITRATE}" ] || ! [[ $yournumber =~ $re ]]
            then {
                if ffmpeg -i "${file}" -codec:a libmp3lame  -b:a "${MAX_BITRATE}k" -vsync 2 -vn "${WRK_DIR}"/0"$num"_"${fname}"
                    then rm -f "${file}"
                    else mv "${file}" "${WRK_DIR}"/0"$num"_"${fname}"
                fi
            }
            else {
                mv "${file}" "${WRK_DIR}"/0"$num"_"${fname}"
            }
            fi
        }
    fi
    let "num++"
done
local num="1"
}


func_fileprep () {
local file=""
local fname=""
local fname_nodig=""
for file in  "${WRK_DIR}"/*
do
    fname=`basename "${file}"`
    if [[ $fname =~ ^[0-9] ]]
        then {
        fname_nodig="$(echo $fname|cut -d "_" -f 2- |cut -d " " -f 2-)"
        fname_nodig=${fname_nodig// /_}
        mv -v "${WRK_DIR}/${fname}" "${WRK_DIR}/${fname_nodig}"
        }
        else {
        fname_nodig=${fname// /_}
        mv -v "${WRK_DIR}/${fname}" "${WRK_DIR}/${fname_nodig}"
        }
    fi
done
if [ -f *Live*.mp3 ]
then {
rm -v "${WRK_DIR}"/*Live*.mp3
}
fi
}

case $1 in
#fileprep)
#func_fileprep
#func_fileprep
#func_fileprep
#;;
#setnum)
#func_setnum
#;;
prepare)
cd "${MURANO_DIR}"
for directory in */
do
    WRK_DIR="$(realpath ${directory})"
    echo "Processing $WRK_DIR"
    func_fileprep
    func_fileprep
    func_fileprep
    func_setnum
done
;;
*)
echo "Usage: $0 prepare /path/to/flash_card"
;;
esac