TEMPDIR=/tmp/scanner/


RET_SCAN=0
RET_MAGICK=-1
FILENAME="UNDEFINED"

if [ ! -d "$TEMPDIR" ]; then
    echo "create tempdir as it does not exist"
    mkdir $TEMPDIR
    echo "mkdir returned: " $?
fi

if [ -d "$TEMPDIR" ]; then
    scanimage --tl-x 7 -d utsushi:esci:usb:0x04B8:0x110B --batch="$TEMPDIR/out%d.pnm" \
        --source=ADF \
        --resolution=200
    RET_SCAN=$?
    echo "scanimage retured:" $RET_SCAN
else
    echo "$TEMPDIR does not exist and could not be created"
fi
#scanimage error 1, 2 
#returns on success also 2

if [ $RET_SCAN == 2 ]; then
    DATE=$(date  +scan_%F-%s)
    FILENAME="$TEMPDIR/$DATE.pdf"
    magick -compress jpeg -quality 60 -density 150 "$TEMPDIR/out*.pnm" $FILENAME
    RET_MAGICK=$?

    for pnmFile in "$TEMPDIR/out*.pnm"
    do
        echo "remove temporary pnm files in $TEMPDIR"
        rm $pnmFile
    done
fi
if [ $RET_MAGICK == 0 ]; then
    echo "magick sucessful converted $FILENAME"
    xdg-open $FILENAME
else
    echo -e "ERROR: magick returned: " $RET_MAGICK " there sems to be nothing to do\n is the paper inserted?"
fi