#!/bin/bash

PROGNAME=`basename $0` || exit 1
QUIET=0
DEBUG=0
TEMPLATE=$HOME/src/manuals/swf2pdf-loq/head.tex

function debug {
        if [ "$DEBUG" = "1" ]; then echo "${PROGNAME}:debug:$1" 1>&2; fi
}

function warning {
        if [ "$QUIET" = "0" ]; then echo "${PROGNAME}:warning:$1" 1>&2; fi
}

function usage {
        echo "Usage: ${PROGNAME} DEVICE" 
        exit
}

while [ "$1" != "" ]; do
        case $1 in
                -D | --debug )
                        shift
                        DEBUG=1
                        ;;
                -q | --quiet )
                        shift
                        QUIET=1
                        ;;
                -h | --help )
                        shift
                        usage
                        ;;
                * )
                        break;
                        ;;
        esac
done

TMPDIR=

function cleanup {
        debug "cleanup called, arg=$1"
        trap - EXIT HUP INT TERM ERR
        if [ "$TMPDIR" != "" -a -d "$TMPDIR" ]; then
                debug "removing $TMPDIR"
                rm -f -r $TMPDIR
        fi
        exit $1
}

function fatal {
        echo "${PROGNAME}:${1:-"unknown error"}" 1>&2
        cleanup 1
}

function sig_handler_HUPINTTERM {
        fatal "cought HUP, INT or TERM signal, exiting"
}

function sig_handler_ERR {
        cleanup 1
}

function sig_handler_EXIT {
        cleanup 0
}

trap sig_handler_HUPINTTERM HUP INT TERM
trap sig_handler_ERR ERR 
trap sig_handler_EXIT EXIT

TMPDIR=`mktemp -d -p /tmp .$PROGNAME.XXXXXX`

if [ ! -f $TEMPLATE ]; then
	fatal "template $TEMPLATE bestaat niet"
fi

if [ -f book.pdf ]; then
	fatal "previous output of this program found"
fi

if [ ! -f 1.jpg ]; then
	fatal "page 1 not found"
fi

cp $TEMPLATE $TMPDIR/book.tex

function render_and_convert {
	for i in "$@"; do
		BASENAME=`echo $i | cut -f 1 -d .`
		echo -n "page $BASENAME..."
		convert $i -monochrome $TMPDIR/$BASENAME-mono-tmp.png
		#pngcrush -c 0 -rem alla -rem text $TMPDIR/$BASENAME-mono-tmp.png $TMPDIR/$BASENAME-mono.png
		echo \\page\{$BASENAME-mono-tmp.png\} >> $TMPDIR/book.tex
		echo " done"
	done
}

render_and_convert ?.jpg
if [ -f 10.jpg ]; then
	render_and_convert ??.jpg
	if [ -f 100.jpg ]; then
		render_and_convert ???.jpg
		if [ -f 1000.jpg ]; then
			render_and_convert ????.jpg
		fi
	fi
fi

#render_and_convert page-???.???
echo \\bye >> $TMPDIR/book.tex

CURDIR=`pwd`

cd $TMPDIR
pdftex $TMPDIR/book.tex
mv book.pdf $CURDIR