#!/bin/sh
#---------------------------------*- sh -*-------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | Copyright (C) 2004-2010 OpenCFD Ltd.
#    \\/     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
#     foamConfigurePaths
#
# Description
#     hardcode installation directory
#
#------------------------------------------------------------------------------
usage() {
    while [ "$#" -ge 1 ]; do echo "$1"; shift; done
    cat<<USAGE

usage: ${0##*/}
  --foamInstall dir         specify installation directory (e.g. /opt)
  --projectName name        specify project name (e.g. openfoam170)
  --archOption  arch        specify architecture option (only 32 or 64 applicable)
  --paraviewInstall dir     specify ParaView_DIR (e.g. /opt/paraviewopenfoam380)

* hardcode paths to installation

USAGE
    exit 1
}


# Function to do replacement on file. Checks if any replacement has been done.
# inlineSed <file> <sedCommand> <description>
_inlineSed()
{
    [ -f "$1" ] || {
        echo "Missing file: $1"
        exit 1
    }

    backup="temp.$$"
    cp $1 $backup
    sed -i -e "$2" $1

    if cmp $1 $backup > /dev/null 2>&1
    then
        echo "Failed: $3 in $1"
        rm $backup 2>/dev/null
        exit 1
    else
        echo "Okay: $3 in $1"
        rm $backup 2>/dev/null
    fi

    return 0
}


[ -f etc/bashrc ] || usage "Please run from top-level directory of installation"

unset foamInstall projectName archOption paraviewInstall

# parse options
while [ "$#" -gt 0 ]
do
    case "$1" in
    -h | -help | --help)
        usage
        ;;
    -foamInstall | --foamInstall)
        [ "$#" -ge 2 ] || usage "'$1' option requires an argument"
        foamInstall="$2"
        # replace foamInstall=...
        _inlineSed \
            etc/bashrc \
            '/^[^#]/s@foamInstall=.*@foamInstall='"$foamInstall@" \
            "Replacing foamInstall setting by '$foamInstall'"
        shift 2
        ;;
   -projectName | --projectName)
        [ "$#" -ge 2 ] || usage "'$1' option requires an argument"
        projectName="$2"
        # replace WM_PROJECT_DIR=...
        _inlineSed \
            etc/bashrc \
            '/^[^#]/s@WM_PROJECT_DIR=.*@WM_PROJECT_DIR=$WM_PROJECT_INST_DIR/'"$projectName@" \
            "Replacing WM_PROJECT_DIR setting by '$projectName'"
        shift 2
        ;;
    -archOption | --archOption)
        [ "$#" -ge 2 ] || usage "'$1' option requires an argument"
        archOption="$2"
        # replace WM_ARCH_OPTION=...
        _inlineSed \
            etc/bashrc \
            '/^[^#]/s@WM_ARCH_OPTION=.*@WM_ARCH_OPTION='"$archOption@" \
             "Replacing WM_ARCH_OPTION setting by '$archOption'"
        shift 2
        ;;
    -paraviewInstall | --paraviewInstall)
        [ "$#" -ge 2 ] || usage "'$1' option requires an argument"
        paraviewInstall="$2"
        # replace ParaView_DIR=...
        _inlineSed \
            etc/apps/paraview3/bashrc \
            '/^[^#]/s@ParaView_DIR=.*@ParaView_DIR='"$paraviewInstall@" \
             "Replacing ParaView_DIR setting by '$paraviewInstall'"
        shift 2
        ;;
    *)
        usage "unknown option/argument: '$*'"
        ;;
    esac
done

[ -n "$foamInstall" -o -n "$projectName" -o -n "$archOption"  -o -n "$paraviewInstall" ] || usage "Please specify at least one configure option"

#echo "Replacing WM_PROJECT setting by '$projectName'"
#sed -i -e 's@WM_PROJECT=.*@WM_PROJECT='"$projectName@" etc/bashrc

# Set WM_MPLIB=SYSTEMOPENMPI always
_inlineSed \
    etc/bashrc \
    '/^[^#]/s@export WM_MPLIB=.*@export WM_MPLIB=SYSTEMOPENMPI@' \
    "Replacing WM_MPLIB setting by 'SYSTEMOPENMPI'"

# set foamCompiler=system always
_inlineSed \
    etc/bashrc \
    '/^[^#]/s@foamCompiler=.*@foamCompiler=system@' \
    "Replacing foamCompiler setting by 'system'"

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