hedgedoc zip backup postprocessing

pad_zipbackup_postprocess.sh

#!/bin/bash

trgd="./hedgedocpads/"

usage(){
    echo "$0 path/to/archive.zip [targetdir (default: $trgd)"
    echo "Download archive.zip from hedgedoc, see dropdown on login name, URL is https://hedgedocdomain.tld/me/export"
}

fd2nbin=$(which filedate2nameprefix.sh)
if [ -z "$fd2nbin" ] ; then
    fd2nbin="$(dirname $0)/filedate2nameprefix.sh"
    if [ ! -x "$fd2nbin" ] ; then
        echo "error: filedate2nameprefix.sh not found in \$PATH or $fd2nbin"
        exit 1
    fi
fi
    

if [ -z "$1" ] ; then
    usage
    exit 1
fi

if [ -n "$2" ] ; then
    trgd="$2"
fi

mkdir -p "$trgd"
if [ ! -d "$trgd" ] ; then
    echo "error: target dir $trgd does not exist"
    usage
    exit 1
fi
pushd "$trgd"

tmpd=$(mktemp -d --tmpdir pads_hedgedoc.XXXX)
echo "working in $tmpd"

if [ -f "$1" ] ; then
    unzip -d "$tmpd" "$1"
else
    "$1 file does not exist"
    exit 1
fi

pushd "$tmpd"
detox -- *
find . -empty -delete
filedate2nameprefix.sh *
popd

cp -u -- "$tmpd"/* .

read -p "download images from uploads? [y/N]" ans

if [ "$ans" == "y" ] ; then
    mkdir -p uploads
    grep -h -o 'https*://[^/]*/uploads/upload_[a-z0-9]*\....' *.md | xargs -r wget -c --directory-prefix=uploads 
    sed -i -e 's#https*://[^/]*/uploads/#uploads/#g' *.md
fi

echo "the following filenames are the same (apart from date), you may possibly want to merge them:" 
for i in $(ls | sed -e 's/^[0-9]\{4\}-[0-9]\{2\}-[0-9]\{2\}_//'| sort | uniq -d)
do 
    echo "---"
    ls *"$i"
done

popd



echo "results in $trgd"

filedate2nameprefix.sh is a separate script:
https://gist.github.com/Marwe/25e67c0cd5b4b849f90e40cca8cce68e