#!/bin/bash

function trapINT() {
    [ "x$trp" = "x" ] &&  trp="yes" || return
    sleep 3
    rm -rf $uid
    exit
}

function stop() {
    echo "stop" > $uid/999999999-page.pbm
}

function log() {
    echo $* | logger -t pstoricohddst-gdi
}

trap "stop; trapINT" SIGINT SIGTERM SIGQUIT
#trap 'echo No' SIGINT SIGTERM SIGQUIT EXIT; 
# Username
user="$2"

# Page title (not used at this time, "Document" instead)
ptitle="$3"
my="$0"

# Printing date
ddate="`LC_ALL=en_US.UTF-8 date '+%Y/%m/%d %H:%M:%S'`"

# Temporary directory
uid="/tmp/pstoricohddst-gdi-`uuidgen`"
mkdir -p $uid

(
stage="empty"
inotifywait -q -m -r -e close_write --format '%f' $uid | grep --line-buffered 'page.pbm$' | while read page; do
    # page submitted
    [ "$stage" = "empty" ] && {
	# Flushing PJL header
	cat <<EOF
%-12345X@PJL
@PJL SET TIMESTAMP=$ddate
@PJL SET FILENAME=Document
@PJL SET COMPRESS=JBIG
@PJL SET USERNAME=$user
@PJL SET COVER=OFF
@PJL SET HOLD=OFF
EOF

	stage="printing"
    }
    [ "$page" = "999999999-page.pbm" ] && { 
	# Flushing PJL footer
	cat <<EOF
@PJL EOJ
%-12345X
EOF
	pid=`ps ax | grep $uid | grep -v grep | awk ' { print $1 } '`
	[ ! "x$pid" = "x" ] && kill $pid
	break
    }
    [ "$stage" = "printing" ] && {
        # Converting page to JBIG format (parameters are very special for this printer!)
        pbmtojbg -p 72 -o 3 -m 0 -q < $uid/$page > $uid/raster.jbig

        # Taking image size
        jsize=`wc -c < $uid/raster.jbig`

        # Taking image dimensions
        read fn ft xs ys garb < <(identify $uid/raster.jbig | tr "x" " ")

        # Flushing page header
        cat <<EOF
@PJL SET PAGESTATUS=START
@PJL SET COPIES=1
@PJL SET MEDIASOURCE=AUTO
@PJL SET MEDIATYPE=PLAINRECYCLE
@PJL SET PAPER=A4
@PJL SET PAPERWIDTH=$xs
@PJL SET PAPERLENGTH=$ys
@PJL SET RESOLUTION=600
@PJL SET IMAGELEN=$jsize
EOF

        # Flushing image
        cat $uid/raster.jbig

        # Flushing page footer
        # TODO: pixelcount for toner estimate
        cat <<EOF
@PJL SET DOTCOUNT=1132782
@PJL SET PAGESTATUS=END
EOF
    }
done
) &

# Converting from PostScript to PostScript-monochrome, then to PBM image format (per page)
gs -sDEVICE=psmono -sOutputFile=- -r600 -dQUIET -dBATCH -dNOPAUSE - | gs -sDEVICE=pbmraw -sOutputFile=${uid}/%d-page.pbm -r600 -dQUIET -dBATCH -dNOPAUSE -

stop
wait

trapINT