#!/bin/bash
#    jigl2slideshow
#    Copyright 2003 Scott Merrill <skippy at skippy.net>
#    adapted from gallery2slideshow by Scott Dylewski  <scott at dylewski.com>
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, write to the Free Software
#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
version='0.4'
changes ()
{
echo ' Changes:
0.4	-i switch not required for input file
0.3	Added fadein before first picture and fadeout at the end  
0.2	Scott <scott at dylewski.com>  Changed typo [ -n $output_dir ]  
	to [ -z $output_dir ] 
0.1	Initial release'
}

# set defaults
duration="10";
output_dir="";
gallery_path="";
crossfade=0

help ()
{
echo "jigl2slideshow $version"
echo "jigl2slideshow is part of the dvd-slideshow set of tools."
echo 'http://freshmeat.net/dvdslideshow'
echo 'Copyright 2003 Scott Merrill <skippy at skippy.net>'
echo 'Copyright 2003 Scott Dylewski <scott at dylewski.com>'
echo
echo  '
jigl2slideshow description: 
 Generates a text file listing of the pictures visible in a given 
 jigl (http://xome.net/projects/jigl/) photo album
 in order to easily pass the information to dvd_slideshow

Usage: jigl2slideshow -o <output_file> -t <time_per_picture> <path_to_album>
	
Options: 
 path_to_album 
	  Path to the gallery.dat that you want to generate a slideshow for.
 
 -o output_directory
	  Path to the directory where you want to output file written.
 
 -t time_per_picture
	  Integer number of seconds for each picture to be displayed.
 		
 -h or -help 
   Prints this help.'
}

if [ $# -lt 1 ]; then
	help
	exit 1
fi


## setup initial variables:
debug=0  # 1 or 0

for arg
do
	case "$arg" in
	-i) shift ; gallery_path="$1" ; shift ;;
	-o) shift; output_dir="$1"; shift ;;
        -t) shift; duration="$1"; shift ;; 
# need to do more work to get this working:
#        -c) shift; crossfade=1; crossfade_duration="$1"; shift ;;
	-h) help ; exit 0 ; shift ;;
	-?) help ; exit 0 ; shift ;;
	-help) help ; exit 0 ; shift ;;
	esac
done
if [ -z "$gallery_path" ] ; then
        gallery_path="$1"
fi
if [ -z "$gallery_path" ] ; then
        echo "[jigl2slideshow] Error: No album specified"
        exit 1
fi


# sanity checking
# did the user give us a valid input file to work with?
if [ ! -f $gallery_path ]; then
# it's not a regular file
        if [ ! -d $gallery_path ]; then
        # it's not a directory!
                echo "Bogus input file (-i $gallery_path)!"
                exit 1;
        else
        # it is a directory, so use gallery.dat
		echo "*** Using gallery.dat in $gallery_path";
                gallery="gallery.dat";
		if [ ! -f $gallery_path/$gallery ]; then
		# there's no gallery.dat file there!
			echo "No such file $gallery_path/$gallery!";
			echo "Aborting!";
			exit 1;
		fi
        fi
else
# it is a regular file!
        gallery=`basename "${gallery_path}"`;
        gallery_path=`echo $gallery_path | sed -e "s/$gallery//"`;
fi

# make sure $gallery_path has no trailing slash
gallery_path=`echo $gallery_path | sed -e 's/\/$//'`;

# did the user give us a valid destination directory?
# if I was really good, I'd check permissions to ensure we can _write_ there
# but I suck and should be destroyed
if [ -z $output_dir ]; then
	# no output directory specified!
	echo "Invalid output destination (-o $output_dir)!";
	echo "*** Using $gallery_path instead.";
	output_dir=$gallery_path;
fi
if [ ! -d $output_dir ]; then
	# I'm sure it was a simple typo.
        echo "Invalid output destination (-o $output_dir)!";
        echo "*** Using $gallery_path instead.";
        output_dir=$gallery_path;
fi

# make sure $output_dir has no trailing slash
output_dir=`echo $output_dir | sed -e 's/\/$//'`;

cleanup ()
{
	## clean up temporary files
	echo "All done!";
	echo "Enjoy your new $output_dir/pictures_list.txt!";
}

forcequit () ## function gets run when we have some sort of forcequit...
{
	## clean up temporary files
	cleanup
}

trap 'forcequit' INT
trap 'forcequit' KILL
trap 'forcequit' TERM

## snag the title from the gallery.dat file
title_bit="INDEX-TITLE ---- ";
title=`grep "$title_bit" $gallery_path/$gallery | sed -e "s/$title_bit//"`;
echo title:$duration:$title > $output_dir/picture_list.txt;

## fade in after title:
echo "background:1" >> "${output_dir}/picture_list.txt"
echo "fadein:1" >> "${output_dir}/picture_list.txt"

`grep -i .jpg $gallery_path/$gallery | sed -e "s/ ---- /:$duration:/" -e "s#^#$gallery_path/#" >> $output_dir/picture_list.txt`;

## fade out at end
echo "fadeout:1" >> "${output_dir}/picture_list.txt"
echo "background:1" >> "${output_dir}/picture_list.txt"

cleanup