#!/bin/sh

FOLDER_LIST="/media/data1/Documents
/media/data1/Videos
/media/data2/GamesFiles
/media/data2/Musics"
OUTPUT="$HOME/personal/dataperso/index"
DATE="$(date +%F)"

_printhelp ()
{
    cat<<EOF
Usage: ${1##*/} [-h]

Create index of folder hierarchies. This is used as a small "backup" purpose. In case of data loss, it is still possible to get the full file list thanks to the indexes.

  -h:  Show this help.

EOF
}

while getopts ":dh" opt; do
    case $opt in
        h)
            _printhelp "$0"
            return 1
            ;;
        ?)
            _printhelp "$0"
            return 1
            ;;
        :)
            _printhelp "$0"
            return 1
            ;;
    esac
done

shift $(($OPTIND - 1))

## Prepare output.
mkdir -p "$OUTPUT"

while read -r i; do
    echo "$i"
    find "$i" -type f | sort > "$OUTPUT/${i##*/}.index"
    echo "## $DATE" >> "$OUTPUT/${i##*/}.index"
done <<EOF
$FOLDER_LIST
EOF