#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | Copyright (C) 2016-2017 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
#     foamNewFunctionObject
#
# Description
#     Create directory with source and compilation files for a new function
#     object
#
#------------------------------------------------------------------------------
Script=${0##*/}
dir="$FOAM_ETC/codeTemplates/functionObject"

error() {
    while [ "$#" -ge 1 ]; do echo "$1"; shift; done
    usage
    exit 1
}

usage() {
        cat<<USAGE
Usage: $Script [OPTIONS] <functionObject>
options:
  -help  | -h         help

Create directory with source and compilation files for a new function object
  <functionObject> (dir)
  - <functionObject>.H
  - <functionObject>.C
  - IO<functionObject>.H
  - Make (dir)
    - files
    - options
  Compiles a library named lib<functionObject>FunctionObject.so in
  \$FOAM_USER_LIBBIN:
  $FOAM_USER_LIBBIN
USAGE
}

case "$1" in
(-h | -help)
    usage && exit 0
    ;;
-*)
    error "$1 is not a valid option/filename"
    ;;
esac

[ "$#" -eq 1 ] || error "Wrong number of arguments"
[ -d "$1" ] && error "$1 directory already exists, aborting..."

func=$1
year=$(date +%Y)

echo "Creating function object code directory $func" && mkdir "${func}"

tmp=$(mktemp tmp.XXXXXX)
find "${dir}" -name '*.*' > "$tmp"
while IFS= read -r template_file
do
    file=$(basename "$template_file" | sed "s#FUNCTIONOBJECT#${func}#g")
    sed -e "s#FUNCTIONOBJECT#${func}#g" \
        -e "s#YEAR#${year}#g" \
        "$template_file" > "${func}/${file}"
done < "$tmp"
rm "$tmp"

echo "Creating Make subdirectory" && mkdir "$func/Make"
sed "s#FUNCTIONOBJECT#${func}#g" "${dir}/Make/files" > "$func/Make/files"
cp "${dir}/Make/options" "$func/Make"

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