#!/bin/sh

#
# You can change the following to configure defaults.
#

# Default location of GPX files.
#
# Examples:
#
#DEFAULT_GPXDIR=$HOME/gpx
#DEFAULT_GPXDIR=.
#DEFAULT_GPXDIR=/var/gps/data

DEFAULT_GPXDIR=.


#
# You can change the rest too.
#

if [ X$DEFAULT_GPXDIR == X"." ]; then
	gpxdirhelp="Search in current directory"
else
	gpxdirhelp=$DEFAULT_GPXDIR
fi

gpxarg="--gpsdir=$DEFAULT_GPXDIR"
overwrite="--overwrite-geotagged"
helpme=false

offsetarg="guess"

args=$(getopt dhg:o: $*)

set -- $args
while [ $# -ge 0 ]; do
	case "$1" in
		-o)
			offsetarg="--timeoffset=$(($2*3600))"; shift; shift;;
		-g)
			gpxarg="--gpsdir=$2"; shift; shift;;
		-d)
			overwrite=""; shift; shift;;
		-h)
			helpme=true; break;;
		--)
			shift; break;;
	esac
done

if [ $? -ne 0 -o X"$*" == X -o X$helpme == Xtrue ]; then
	echo "Usage: geoTag [-f] [-g <gpx file>] [-o <offset>] <jpeg files>"
	echo "    -d              Do not overwrite existing GPS data"
	echo "                    (Default: Do it)"
	echo "    -g <gpx dir>    Directory to look for GPX files in"
	echo "                    (Default: $gpxdirhelp)"
	echo "    -o <offset>     Camera offset in hours"
	echo "                    (Default: Guess from coordinates)"
	exit
fi

if [ X"$offsetarg" = Xguess ]; then
	for image; do
		offset=$(
			/usr/opt/bin/gpsPhoto.pl --tz-guess=zone.tab $gpxarg -i $image \
			| grep -- "--timeoffset=" \
			| sed 's/.*--timeoffset=\([-0-9]*\)/\1/'
		)
		offsetarg="--timeoffset=$offset"
		echo "==============================="
		echo " Offset: $offset seconds"
		echo "==============================="
		break;
	done
fi

image_list=$(mktemp)
for image; do
	echo $image>>$image_list
done

/usr/opt/bin/gpsPhoto.pl \
	--interpolate=linear \
	-I $image_list \
	$overwrite \
	$gpxarg \
	$offsetarg

/usr/opt/bin/gpsPlacenamePhoto.pl $*

exit