#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
#    \\/     M anipulation  | Copyright (C) 2017-2018 OpenCFD Ltd.
#------------------------------------------------------------------------------
# License
#     This file is part of OpenFOAM, licensed under GNU General Public License
#     <http://www.gnu.org/licenses/>.
#
# Script
#     Alltest
#
# Description
#     Quickly test the tutorials and write out the scheme/solver information
#
#------------------------------------------------------------------------------
cd ${0%/*} || exit 1    # Run from this directory

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

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

options:
  -git          Use git to retrieve the tutorials
  -no-git       Do not use git to retrieve the tutorials
  -root dir     Specify root directory to run tests from
  -default      Sets up a default scheme on all schemes
  -help         Print the usage

Quickly tests the tutorials and writes out the scheme/solver information.
The default is to detect and use 'git' if possible to obtain a fresh set
of tutorial files. This can be overridden with -git or -no-git options.

USAGE
    exit 1
}

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

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

ROOT="./"
unset DEFAULT_SCHEMES
useGit=auto

# Parse options
while [ "$#" -gt 0 ]
do
    case "$1" in
    -h | -help)
        usage
        ;;
    -r | -root)
        [ "$#" -ge 2 ] || die "'$1' option requires an argument"
        ROOT="$2"
        shift
        ;;
    -git)
        useGit=true
        ;;
    -no-git)
        unset useGit
        ;;
    -d | -default)
        DEFAULT_SCHEMES=true
        ;;
    *)
        die "Unknown option/argument: '$1'"
        ;;
    esac
    shift
done

# Set FOAM_TUTORIALS directory location, as required.
. $WM_PROJECT_DIR/bin/tools/RunFunctions


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

#
# Set up a default scheme on all schemes
#
setDefaultFvSchemes()
{
cat<<EOF
gradSchemes { default Gauss linear; }
divSchemes
{
    default Gauss linear;
    div(phi,fu_ft_ha) Gauss multivariateSelection
    {
        fu upwind;
        ft upwind;
        h  upwind;
    };
    div(phi,ft_b_ha_hau) Gauss multivariateSelection
    {
        fu upwind;
        ft upwind;
        b  upwind;
        h  upwind;
        hu upwind;
    };
}
laplacianSchemes { default Gauss linear corrected; }
interpolationSchemes { default linear; }
snGradSchemes { default corrected; }
EOF
}


#
# Location of the main controlDict
#
unset MAIN_CONTROL_DICT

for i in \
    $HOME/.$WM_PROJECT/$WM_PROJECT_VERSION \
    $HOME/.$WM_PROJECT \
    $WM_PROJECT_DIR/etc \
    ;
do
    if [ -f "$i/controlDict" ]
    then
        MAIN_CONTROL_DICT="$i/controlDict"
        break
    fi
done

[ -f "$MAIN_CONTROL_DICT" ] || usage "Main controlDict not found"


TUTORIALS_DIR=$ROOT
TEST_RUN_DIR=../tutorialsTest
FV_SCHEMES=\
" \
    gradScheme \
    divScheme \
    laplacianScheme \
    interpolationScheme \
    snGradScheme \
"
SCHEMES_FILE="FvSchemes"
SCHEMES_TEMP="FvSchemes.temp"
SOLVERS_FILE="FvSolution"
SOLVERS_TEMP="FvSolution.temp"


#
# MAIN
#

if [ -d "$TEST_RUN_DIR" ]
then
    echo "Removing old directory: $TEST_RUN_DIR" 1>&2
    rm -rf $TEST_RUN_DIR
fi

# Remove old build/ directory
buildDir="$WM_PROJECT_DIR/build/$WM_OPTIONS/${TEST_RUN_DIR##*/}"
if [ -d "$buildDir" ]
then
    echo "Removing old build directory: $buildDir" 1>&2
    rm -rf $buildDir
fi

if [ -e ${MAIN_CONTROL_DICT}.orig ]
then
    die "File ${MAIN_CONTROL_DICT}.orig already exists" \
        "Did Alltest fail in some way and then run again?"
fi


unset gitbase

if [ -n "$useGit" ]
then
    if git rev-parse --is-inside-work-tree > /dev/null 2>&1
    then
        gitbase="$(git rev-parse --show-toplevel 2>/dev/null)"
    fi

    case "$useGit" in
    auto)
        if [ -n "$gitbase" ]
        then
            echo "Detected git repository" 1>&2
        else
            echo "No git repository detected" 1>&2
        fi
        ;;

    true)
        [ -n "$gitbase" ] || die "Not in a git repository"
        ;;
    esac
fi


if [ -n "$gitbase" ]
then
    echo "Copying the tutorials from current git branch" 1>&2
    mkdir -p ${TEST_RUN_DIR}
    ( cd "$gitbase/tutorials" && git archive --format=tar HEAD . ) | \
    ( cd "$TEST_RUN_DIR" && tar -xf - )
else
    echo "Copying the tutorials directory" 1>&2
    cp -a "$TUTORIALS_DIR" "$TEST_RUN_DIR"
fi

echo 1>&2


# Clean up on termination and on Ctrl-C
trap 'mv ${MAIN_CONTROL_DICT}.orig ${MAIN_CONTROL_DICT} 2>/dev/null; exit 0' \
    EXIT TERM INT
cp -f "${MAIN_CONTROL_DICT}" "${MAIN_CONTROL_DICT}.orig"

echo "Modifying ${MAIN_CONTROL_DICT}" 1>&2

sed \
    -e s/"\(fvSchemes[ \t]*\)\([0-9]\);"/"\1 1;"/g \
    -e s/"\(solution[ \t]*\)\([0-9]\);"/"\1 1;"/g  \
    "${MAIN_CONTROL_DICT}.orig" > "${MAIN_CONTROL_DICT}"

cd "${TEST_RUN_DIR}" || exit 1

echo "Modifying the controlDicts to run only one time step" 1>&2

for CD in $(find . -name "controlDict*" -type f)
do
    cp -f "${CD}" "${CD}.orig"
    sed \
        -e s/"\(startFrom[ \t]*\)\([a-zA-Z]*\);"/"\1 latestTime;"/g \
        -e s/"\(stopAt[ \t]*\)\([a-zA-Z]*\);"/"\1 nextWrite;"/g \
        -e s/"\(writeControl[ \t]*\)\([a-zA-Z]*\);"/"\1 timeStep;"/g \
        -e s/"\(writeInterval[ \t]*\)\([0-9a-zA-Z.-]*\);"/"\1 1;"/g \
        "${CD}.orig" > "${CD}"
done

if [ "$DEFAULT_SCHEMES" = true ]
then
    echo "Modifying the fvSchemes to contain only default schemes" 1>&2
    for FV_SC in $(find . -name fvSchemes -type f)
    do
        for S in $FV_SCHEMES
        do
            cp -f "${FV_SC}" "${FV_SC}.orig"
            sed -e /"${S}"/,/$p/d "${FV_SC}.orig" > "${FV_SC}"
        done
        setDefaultFvSchemes >> "${FV_SC}"
    done
fi


cp -f $FOAM_TUTORIALS/Allrun .
./Allrun -test

sed -e :a -e '/\\$/N; s/\\\n//; ta' Allrun > temp
APPLICATIONS=\
    $(grep "applications=" temp | sed 's/applications=\"\([A-Za-z \t]*\)\"/\1/g')

rm $SCHEMES_FILE > /dev/null 2>&1
for APP in $APPLICATIONS
do
    echo $APP >> $SCHEMES_FILE
    echo "$APP: " | tr -d "\n" >> $SOLVERS_FILE
    for ST in $FV_SCHEMES
    do
        rm $SCHEMES_TEMP $SOLVERS_TEMP > /dev/null 2>&1
        echo "  ${ST}" >> $SCHEMES_FILE
        for LOG in $(find ${APP} -name "log.${APP}" -type f)
        do
            for S in $(grep ${ST} ${LOG} | cut -d" " -f4)
            do
                echo "    ${S}" >> $SCHEMES_TEMP
            done
        echo $(grep solver ${LOG} | cut -d" " -f4) >> $SOLVERS_TEMP
        done
        if [ -f $SCHEMES_TEMP ]
        then
            cat $SCHEMES_TEMP | sort -u >> $SCHEMES_FILE
        fi
    done
    cat $SOLVERS_TEMP | tr " " "\n" | sort -u | tr "\n" " " >> $SOLVERS_FILE
    echo "" >> $SOLVERS_FILE
done

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