#/!bin/bash
##===========================================================================
## Copyright (C) 2021  Max-Planck-Institut für Radioastronomie, Bonn, Germany
## 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 3 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, see <http://www.gnu.org/licenses/>.
##===========================================================================

if [ $# -ne 2 ];
then
	echo "Usage: fplot2png <exptdir> <1-letter station code|'all'>"
	echo ""
	echo "Creates a series of PNG images of all scans containing the given one-letter station code"
	echo "If you want to process all stations specify: all"
	exit
fi

arg1=$1
arg2=$2

function processScandir () {
	path=$1
	station=$2
	base=$(dirname $path)

	pushd $path > /dev/null

	regex="(.)(.)\.[a-zA-Z]\.(.*)\."
	for file in ??.*.*.*; do
		if [[ $file =~ $regex ]]
		then
			bl1="${BASH_REMATCH[1]}"
			bl2="${BASH_REMATCH[2]}"
			num="${BASH_REMATCH[3]}"
			if (( [ $station == "all" ] ) || ( [ $bl1 == $station ] || [ $bl2 == $station ] ))
			then
				scan=$(basename $file)
				echo "processing $path baseline $bl1-$bl2"
				out="${path}-${bl1}${bl2}_${num}"
				GS_OPTIONS=-sOutputFile="../$out.png" GS_DEVICE=png16m fplot $file < /dev/urandom > /dev/null 2>&1
			fi
		fi
	done

	popd > /dev/null
}

cd $arg1
for scandir in `find * -type d`; do
	processScandir $scandir $arg2
done