#!/bin/bash
# Copyright (c) Rik Snel 2007, license GPL v3 or any later version

PROGNAME=`basename $0` || exit 1
QUIET=0
DEBUG=0
NOORDHOFF=$HOME/noordhoff

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 [ "$#" != "2" ]; then
	fatal "precisely one image must be specified, root and name"
fi

if [ ! -d $NOORDHOFF ]; then
	fatal "director $NOORDHOFF does not exist"
fi

if [ -d $NOORDHOFF/$2 ]; then
	fatal "directory $2 already exists in $NOORDHOFF"
fi

mkdir $NOORDHOFF/$2

cd $NOORDHOFF/$2

if wget ${1}page-001.png || wget ${1}page-001.jpg; then
	SEQ=`seq -f "%03.0f" 2 999`
	for i in $SEQ; do
		if  wget ${1}page-$i.png || wget ${1}page-$i.jpg; then
			echo ok
		else
			exit
		fi
	done
elif wget ${1}1.jpg || wget ${1}1.png; then
	if [ -f 1.jpg ]; then mv 1.jpg 001.jpg; fi
	if [ -f 1.png ]; then mv 1.jpg 001.png; fi
	SEQ=`seq 2 999`
        for i in $SEQ; do
                if  wget ${1}$i.png || wget ${1}$i.jpg; then
			for a in $i.{png,jpg}; do
				if [ -f $a -a "$a" != `printf %03d.%s ${a%.*} ${a##*.}` ]; then mv $a `printf %03d.%s ${a%.*} ${a##*.}`; fi
			done
                        echo ok
                else
                        exit
                fi
        done
fo
fi