#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | www.openfoam.com
#    \\/     M anipulation  |
#-------------------------------------------------------------------------------
#     Copyright (C) 2015-2017 OpenFOAM Foundation
#     Copyright (C) 2020 OpenCFD Ltd.
#------------------------------------------------------------------------------
# License
#     This file is part of OpenFOAM, distributed under GPL-3.0-or-later.
#
# Script
#     foamNewBC
#
# Description
#     Create directory of source and compilation files for a new BC
#
#------------------------------------------------------------------------------
Script=${0##*/}
DIR="$WM_PROJECT_DIR/etc/codeTemplates/BC"

usage() {
    while [ "$#" -ge 1 ]; do echo "$1"; shift; done
    cat<<USAGE
Usage: $Script [-h | -help] <base> <type> <boundaryConditionName>

* Create directory of source and compilation files for a new boundary condition
  <boundaryConditionName> (dir)
  - .C and .H source files
  - Make (dir)
    - files
    - options
  Compiles a library named lib<boundaryConditionName>.so in \$FOAM_USER_LIBBIN:
  $FOAM_USER_LIBBIN

<base> conditions:
-f | -fixedValue    | fixedValue
-m | -mixed         | mixed

<type> options:
-a | -all    | all  | template (creates a template class)
-s | -scalar | scalar
-v | -vector | vector
-t | -tensor | tensor
-symmTensor  | symmTensor
-sphericalTensor | sphericalTensor

USAGE
    exit 1
}

cap() {
    echo $1 | sed -e 's/^./\U&/'
}

# Implicitly covers a lone -help
[ "$#" -gt 1 ] || usage

case "$1" in
(-h | -help*)
    usage
    ;;
(-f | -fixedValue | fixedValue)
    BASE=fixedValue
    ;;
(-m | -mixed | mixed )
    BASE=mixed
    ;;
(*)
    usage "Unknown <base> condition '$1'"
    ;;
esac
shift

case "$1" in
(-a | -all | all | template)
    TYPE=Type
    UNIT='VALUE-or-(VALUE 0 0)'
    ;;
(-s | -scalar | scalar)
    TYPE=scalar
    UNIT=VALUE
    ;;
(-v | -vector | vector)
    TYPE=vector
    UNIT='(VALUE 0 0)'
    ;;
(-t | -tensor | tensor)
    TYPE=tensor
    UNIT='(VALUE 0 0 0 0 0 0 0 0)'
    ;;
(-symmTensor | symmTensor)
    TYPE=symmTensor
    UNIT='(VALUE 0 0 0 0 0)'
    ;;
(-sphericalTensor | sphericalTensor)
    TYPE=sphericalTensor
    UNIT=VALUE
    ;;
(*)
    usage "Unknown <type> option '$1'"
    ;;
esac
shift
[ "$#" -eq 1 ] || usage "Wrong number of arguments"
NAME=$1

# Prevents over-writing of existing directory
[ -d $NAME ] && usage "$NAME directory already exists, aborting..."
echo "Creating $NAME directory" && mkdir $NAME

# Establish meta template files to copy
FILES=$(cd ${DIR} && ls *.*)
[ "$TYPE" = "Type" ] || FILES=$(cd ${DIR} && ls BC.[CH])

# Substitutions for meta-template files
FIELD="Field<${TYPE}>"
[ "$TYPE" = "Type" ] || FIELD=${TYPE}Field

FVPATCHF=fvPatch$(cap $FIELD)
CLASS=$NAME$(cap $FVPATCHF)
PARENT=$BASE$(cap $FVPATCHF)
CONSTRUCT=$(echo $CLASS | sed 's/<Type>//g')
YEAR=$(date +%Y)

# Create some example values for the Description
n=0
for N in $(echo "ZERO ONE TWO THREE FOUR")
do
   eval $(expr $N='$(echo $UNIT | sed "s#VALUE#$n#g")')
   n=$(( $n + 1 ))
done

# Make substitutions to meta-template files
for F in $FILES
do
    EXT=$(echo $F | sed "s#BC##")
    NEWFILE=${CONSTRUCT}${EXT}
    echo "   Adding file ${NEWFILE}..."

    # Adds readScalar function when TYPE = scalar
    sed -e "s#TYPE#${TYPE}#g" \
        -e "s#NAME#${NAME}#g" \
        -e "s#BASE#${BASE}#g" \
        -e "s#CONSTRUCT#${CONSTRUCT}#g" \
        -e "s#YEAR#${YEAR}#g" \
        -e "s#CLASS#${CLASS}#g" \
        -e "s#FIELD#${FIELD}#g" \
        -e "s#FVPATCHF#${FVPATCHF}#g" \
        -e "s#PARENT#${PARENT}#g" \
        -e "s#ZERO#${ZERO}#g" \
        -e "s#ONE#${ONE}#g" \
        -e "s#TWO#${TWO}#g" \
        -e "s#THREE#${THREE}#g" \
        -e "s#FOUR#${FOUR}#g" \
        -e 's/>>/>>/g' \
        ${DIR}/${F} > ${NAME}/${NEWFILE}

    case $BASE in
        fixedValue)
            # refValue(), refGrad(), valueFraction() removed
            # phip removed
            sed -i \
                -e '/refValue/d' \
                -e '/refGrad/d' \
                -e '/valueFraction/d' \
                -e '/const scalarField\& phip/,/);/d' \
                ${NAME}/${NEWFILE}
            ;;
        mixed)
            # evaluate() removed
            # operator== becomes refValue() =
            sed -i \
                -e '/evaluate/d' \
                -e 's/operator==/refValue() =/g' \
                ${NAME}/${NEWFILE}
            ;;
    esac

    case $TYPE in
        Type)
            # Build Macro removed (in ..Fields.C)
            sed -i -e '/Build Macro/,/^}/d' \
                ${NAME}/${NEWFILE}
            ;;
        *)
            # template<class Type> removed
            # this-> removed
            # .template functionTemplate<...> becomes functionTemplate<...>
            # template instantiation repository removed
            sed -i \
                -e '/^template<class Type>$/d' \
                -e 's/this->//g' \
                -e 's/\.template[\t ]*\([A-Za-z]\)/\.\1/g' \
                -e '/#ifdef NoRepository/,/\/\/ */d' \
                ${NAME}/${NEWFILE}
            ;;
    esac
done

echo "Creating Make subdirectory" && cp -r ${DIR}/Make ${NAME}
COMPILED=$(cd ${NAME} && ls -r1 *C | head -1) # ...Fields.C for template class
sed -i -e "s#NAME#${NAME}#g" -e "s#COMPILED.*#${COMPILED}#g" ${NAME}/Make/files

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