#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | www.openfoam.com
#    \\/     M anipulation  |
#------------------------------------------------------------------------------
#     Copyright (C) 2020-2023 OpenCFD Ltd.
#------------------------------------------------------------------------------
# License
#     This file is part of OpenFOAM, distributed under GPL-3.0-or-later.
#
# Script
#     query-versions
#
# Description
#     Query (ThirdParty) versions based on their etc/config.sh values
#     Executes their respective -query.
#
# TODO
#     cmake, vtk, paraview
#
#------------------------------------------------------------------------------
# Hard-coded value (eg, with autoconfig)
projectDir="@PROJECT_DIR@"

if [ -z "$projectDir" ] || [ "${projectDir#@}" != "$projectDir" ]
then
    # Auto-detect from location
    toolsDir="${0%/*}"                              # The bin/tools dir
    projectDir="${toolsDir%/bin/tools}"             # Project dir

    case "$projectDir" in
        (/bin | /usr/bin | /usr/local/bin)
        # This shouldn't happen.
        # If copied to a system dir, should also be using hard-coded values!
        echo "Warning: suspicious looking project dir: $projectDir" 1>&2
        ;;

        ("$toolsDir")
        # Eg, called as ./openfoam etc - need to try harder
        projectDir="$(\cd $(dirname $0)/../.. && \pwd -L)" || unset projectDir
        ;;
    esac
fi

#------------------------------------------------------------------------------
usage() {
    exec 1>&2
    while [ "$#" -ge 1 ]; do echo "$1"; shift; done
    cat<<USAGE

Usage: ${0##*/} [OPTION]

options:
  -compiler         Print clang,gcc compiler versions only
  -clang            Print clang compiler versions only
  -gcc              Print gcc compiler versions only
  -h, -help         Print the usage

Query (ThirdParty) versions based on their etc/config.sh values.
Uses OpenFOAM wmake/scripts/have_* scripts.

USAGE
    exit 1
}

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

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

    (-clang | -gcc)
        optCompiler="${1#-}"
        ;;

    (-comp*)
        optCompiler=true
        ;;

    (*)
        echo "Ignore unknown option/argument: $@" 1>&2
        break
        ;;
    esac
    shift
done

#------------------------------------------------------------------------------
configDir="$projectDir/etc/config.sh"
scriptsDir="$projectDir/wmake/scripts"

[ -d "$configDir" ] || {
    echo "No such directory: $configDir" 1>&2
    exit 2
}
[ -d "$scriptsDir" ] || {
    echo "No such directory: $scriptsDir" 1>&2
    exit 2
}

# Allow operation without an active OpenFOAM environment
export WM_PROJECT_DIR="$projectDir"

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

# Gcc/Clang versions in etc/config.sh/compiler
#
# parse this type of content
# ----
#     default_clang_version=llvm-[digits].[digits].[digits]
#     default_gcc_version=gcc-[digits].[digits].[digits]
#
#     Gcc121*) gcc_version=gcc-[digits].[digits].[digits] ;;
# ----

queryCompiler()
{
    compiler="$1"

    if [ -z "$compiler" ]
    then
        compiler='clang\|gcc'
    fi

    settings="$configDir/compiler"
    if ! [ -f "$settings" ]
    then
        echo "No such file: $settings" 1>&2
        return 1
    fi

    sed -n \
        -e 's/^[ ]*\('"$compiler"'\)\([0-9][0-9]*\)[^=]*=\([^ ;]*\).*$/\1\2 \3/ip' \
        "$settings"

    sed -n \
        -e 's/^[ ]*\(default_\)\('"$compiler"'\)_version=\([^ ;]*\).*$/\1\2 \3/ip' \
        "$settings"
}


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

# Examine the "wmake/scripts/have_..." scripts for query_...() functions,
# assume they also have a -query option

queryVersions()
{
    for script in grep -l -e '^query_' "$scriptsDir"/have_*
    do
        if [ -f "$script" ]
        then
            bash "$script" -query
        fi
    done
}


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

# main

case "$optCompiler" in
(true)
    queryCompiler
    ;;
(clang | gcc)
    queryCompiler "$optCompiler"
    ;;
(*)
    queryVersions
    ;;
esac

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