#!/bin/sh
#---------------------------------*- sh -*-------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
#    \\/     M anipulation  | Copyright (C) 2016 OpenCFD Ltd.
#------------------------------------------------------------------------------
# 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
#     Adjust hardcoded installation paths and versions
#
#------------------------------------------------------------------------------
usage() {
    exec 1>&2
    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. openfoam220)
  -projectVersion ver     specify project version (e.g. 2.2.0)
  -archOption 32|64       specify architecture option
  -label 32|64            specify label size
  -system name            specify 'system' compiler to be used
  -thirdParty name        specify 'ThirdParty' compiler to be used

  -boost ver              specify boost_version
  -boostArchPath dir      specify BOOST_ARCH_PATH
  -cgal ver               specify cgal_version
  -cgalArchPath dir       specify CGAL_ARCH_PATH
  -clang ver              specify clang_version for ThirdParty Clang
  -cmake ver              specify cmake_version
  -fftw ver               specify fffw_version
  -fftwArchPath dir       specify FFTW_ARCH_PATH
  -metis ver              specify METIS_VERSION
  -metisArchPath dir      specify METIS_ARCH_PATH
  -paraview ver           specify ParaView_VERSION (e.g. 3.12.0)
  -paraviewInstall dir    specify ParaView_DIR (e.g. /opt/paraviewopenfoam3120)
  -scotch ver             specify SCOTCH_VERSION (e.g. 6.0.0)
  -scotchArchPath dir     specify SCOTCH_ARCH_PATH (e.g. /opt/OpenFOAM-scotch-6.0.0/)

* Adjust hardcoded installation paths and versions

USAGE
    exit 1
}

# Report error and exit
die()
{
    exec 1>&2
    echo
    echo "Error: see '${0##*/} -help' for usage"
    while [ "$#" -ge 1 ]; do echo "    $1"; shift; done
    echo
    exit 1
}


# Function to do replacement on file. Checks if any replacement has been done.
# _inlineSed <file> <regexp> <replacement> <msg>
_inlineSed()
{
    local file="$1"
    local regexp="$2"
    local replacement="$3"
    local msg="$4"
    local cmd='/^[^#]/s@'"$regexp"'@'"$replacement"'@'

    [ -f "$file" ] || {
        echo "Missing file: $file"
        exit 2 # Fatal
    }

    grep -q "$regexp" "$file" && sed -i -e "$cmd" "$file" || { \
        echo "Failed: $msg in $file"
        return 1
    }

    echo "Okay: $msg in $file"
    return 0
}


# Standard <key> <val> type of replacements.
# replace <file> <key1> <val1> .. <keyN> <valN>
# looks for KEYWORD=.*
replace()
{
    local file="$1"
    shift

    local key
    local val

    while [ "$#" -ge 2 ]
    do
        key=$1
        val=$2
        shift 2

        _inlineSed \
            $file \
            "$key=.*" \
            "$key=$val" \
            "Replacing $key setting by '$val'"
    done
}


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

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

unset adjusted
# Parse options
while [ "$#" -gt 0 ]
do
    case "$1" in
    -h | -help | --help)
        usage
        ;;

    -foamInstall | --foamInstall)
        # Replace FOAM_INST_DIR=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        foamInstDir="$2"
        _inlineSed \
            etc/bashrc \
            '\(.*BASH_SOURCE.*\)' \
            '##\1' \
            "Removing default FOAM_INST_DIR setting"
        _inlineSed \
            etc/bashrc \
            '^ *FOAM_INST_DIR=.*' \
            'FOAM_INST_DIR='"$foamInstDir" \
            "Setting FOAM_INST_DIR to '$foamInstDir'"

        adjusted=true
        shift
        ;;

   -projectName | --projectName)
        # Replace WM_PROJECT_DIR=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        projectName="$2"
        _inlineSed \
            etc/bashrc \
            'WM_PROJECT_DIR=.*' \
            'WM_PROJECT_DIR=$WM_PROJECT_INST_DIR/'"$projectName" \
            "Replacing WM_PROJECT_DIR setting by $projectName"

        adjusted=true
        shift
        ;;

   -projectVersion | --projectVersion)
        # Replace WM_PROJECT_VERSION=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/bashrc  WM_PROJECT_VERSION "$2"
        adjusted=true
        shift
        ;;

    -archOption | --archOption)
        # Replace WM_ARCH_OPTION=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        archOption="$2"
        current="$(sed -ne '/^[^#]/s/^.* WM_ARCH_OPTION=//p' etc/bashrc)"
        if [ "$archOption" = "$current" ]
        then
            echo "WM_ARCH_OPTION already set to $archOption"
        else
            replace etc/bashrc  WM_ARCH_OPTION "$2"
        fi
        adjusted=true
        shift
        ;;

    -label)
        # Replace WM_LABEL_SIZE=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/bashrc  WM_LABEL_SIZE "$2"
        adjusted=true
        shift
        ;;

    -system)
        # Replace WM_COMPILER_TYPE=... and WM_COMPILER=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/bashrc  WM_COMPILER_TYPE system  WM_COMPILER "$2"
        adjusted=true
        shift
        ;;

    -third[Pp]arty)
        # Replace WM_COMPILER_TYPE=... and WM_COMPILER=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/bashrc  WM_COMPILER_TYPE ThirdParty  WM_COMPILER "$2"
        adjusted=true
        shift
        ;;


    -boost)
        # Replace boost_version=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/config.sh/CGAL  boost_version "$2"
        adjusted=true
        shift
        ;;

    -boostArchPath)
        # Replace BOOST_ARCH_PATH=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/config.sh/CGAL  BOOST_ARCH_PATH "$2"
        adjusted=true
        shift
        ;;

    -cgal)
        # Replace cgal_version=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/config.sh/CGAL  cgal_version "$2"
        adjusted=true
        shift
        ;;

    -cgalArchPath)
        # Replace CGAL_ARCH_PATH=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/config.sh/CGAL  CGAL_ARCH_PATH "$2"
        adjusted=true
        shift
        ;;

    -fftw)
        # Replace fftw_version=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/config.sh/FFTW  fftw_version "$2"
        adjusted=true
        shift
        ;;

    -fftwArchPath)
        # Replace FFTW_ARCH_PATH=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/config.sh/FFTW  FFTW_ARCH_PATH "$2"
        adjusted=true
        shift
        ;;

    -clang)
        # Replace clang_version=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/config.sh/compiler  clang_version "$2"
        adjusted=true
        shift
        ;;

    -cmake)
        # Replace cmake_version=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/config.sh/paraview  cmake_version "$2"
        adjusted=true
        shift
        ;;

    -paraview | -paraviewVersion | --paraviewVersion)
        # Replace ParaView_VERSION=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/config.sh/paraview  ParaView_VERSION "$2"
        adjusted=true
        shift
        ;;

    -paraviewInstall | --paraviewInstall)
        # Replace ParaView_DIR=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/config.sh/paraview  ParaView_DIR "$2"
        adjusted=true
        shift
        ;;

    -metis)
        # Replace METIS_VERSION=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/config.sh/metis  METIS_VERSION "$2"
        adjusted=true
        shift
        ;;

    -metisArchPath)
        # Replace METIS_ARCH_PATH=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/config.sh/metis  METIS_ARCH_PATH "$2"
        adjusted=true
        shift
        ;;

    -scotch | -scotchVersion | --scotchVersion)
        # Replace SCOTCH_VERSION=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/config.sh/scotch  SCOTCH_VERSION "$2"
        adjusted=true
        shift
        ;;

    -scotchArchPath | --scotchArchPath)
        # Replace SCOTCH_ARCH_PATH=...
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        replace etc/config.sh/scotch  SCOTCH_ARCH_PATH "$2"
        adjusted=true
        shift
        ;;

    *)
        die "unknown option/argument: '$1'"
        ;;
    esac
    shift
done

[ -n "$adjusted" ] || die "Please specify at least one configure option"

# Set WM_MPLIB=SYSTEMOPENMPI always
replace etc/bashrc  WM_MPLIB SYSTEMOPENMPI

## Set WM_COMPILER_TYPE=system always
# replace etc/bashrc  WM_COMPILER_TYPE system

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