#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     | Website:  https://openfoam.org
#   \\  /    A nd           | Copyright (C) 2015-2025 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
#     foamNewApp
#
# Description
#     Create directory with source and compilation files for a new application
#
#------------------------------------------------------------------------------
Script=${0##*/}
dir="$FOAM_ETC/codeTemplates/app"

usage() {
    cat<<USAGE
Usage: $Script [OPTIONS] <application>
options:
  -help  | -h         print the usage
  -plain | -p         create a plain application for non-CFD use

Create directory with source and compilation files for a new application
  <application> (dir)
  - <application>.C
  - Make (dir)
    - files
    - options
  Compiles an executable named <application> in \$FOAM_USER_APPBIN:
  $FOAM_USER_APPBIN
USAGE
}

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

case "$1" in
-help | -h)
    usage && exit 0
    ;;
-plain | -p)
    dir="$FOAM_ETC/codeTemplates/plain"
    shift
    ;;
-*)
    error "$1 is not a valid filename"
    ;;
esac

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

app="$1"
year=$(date +%Y)

file="${dir##*/}.C"

echo "Creating application code directory $app" && mkdir "$app"
sed -e "s#NAME#$app#g" \
    -e "s#YEAR#$year#g" \
    "$dir/$file" > "$app/$app.C"

echo "Creating Make subdirectory" && mkdir "$app/Make"
sed "s#NAME#$app#g" "$dir/Make/files" > "$app/Make/files"
cp "$dir/Make/options" "$app/Make"

otherFiles="$(find "$dir" -maxdepth 1 -type f ! -name "$file")"
for f in $otherFiles
do
    echo "Copying example ${f##*/} file" && cp "$f" "$app"
done

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