#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | Copyright (C) 2015 OpenFOAM Foundation
#    \\/     M anipulation  |
#-------------------------------------------------------------------------------
# License
#     This file is part of OpenFOAM.
#
#     OpenFOAM 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.
#
#     OpenFOAM 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 OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
#
# Script
#     foamCloneCase
#
# Description
#     Create a new case directory that includes time, system and constant
#     directories from a source case.
#     The time directory is the first time directory by default
#     - requires foamListTimes v2.3.x and newer
#
#------------------------------------------------------------------------------
usage() {
    exec 1>&2
    while [ "$#" -ge 1 ]; do echo "$1"; shift; done
    cat<<USAGE

Usage: ${0##*/} [OPTION] <sourceCase> <targetCase>
options:
  -l | -latestTime    clone the latest time directory
  -h | -help          print the usage

Create a new <targetCase> case directory that includes time, system and constant
directories of <sourceCase> directory.
The time directory is the first time directory by default.

USAGE
    exit 1
}

TIME_OPTION="head -1"

# parse options
while [ "$#" -gt 0 ]
do
    case "$1" in
    -h | -help*)
        usage
        ;;
    -l | -latestTime)
        TIME_OPTION="tail -1"
        shift 1
        ;;
    -*)
        usage "unknown option: '$*'"
        ;;
    *)
        break
        ;;
    esac
done

[ $# -eq 2 ] || usage "Incorrect arguments specified"
if [ "$(foamListTimes -case $1 2>&1 >/dev/null | grep 'FOAM FATAL ERROR')" ]
then
    usage "$1 is not does not a valid case directory"
fi
! [ -e $2 ] || usage "$2 file/directory already exists, delete and re-run"

echo "Making $2 case directory"
mkdir $2

TIME_DIR="$(foamListTimes -withZero -case $1 | $TIME_OPTION)"

echo "Copying case directories from $1 to $2"
cp -r $1/system $1/constant $1/${TIME_DIR} $2

#------------------------------------------------------------------------------