#! /bin/bash -e
set -e

#####################################################################
#                                                                   #
#               Compiles Faust programs to Cmajor                   #
#               (c) Grame, 2019-2022                                #
#                                                                   #
#####################################################################

. faustpath
. faustoptflags
. usage.sh

ARCHFILE=$FAUSTARCH/cmajor/minimal.cmajor

echoHelp() 
{
    usage faust2cmajor "[options] [Faust options] <file.dsp>"
    echo  "Compiles Faust programs to Cmajor"
    option
    option -midi
    option "-nvoices <num>"
    option "-effect <effect.dsp>"
    option "-effect auto"
    option -juce "to create a JUCE project"
    option -dsp "to create a 'dsp' compatible subclass"
    option -test "to test the resulting patch with 'cmaj render'"
    option -play "to start the 'cmaj' runtime with the generated Cmajor file"
    option "Faust options"
    exit
}

if [ "$#" -eq 0 ]; then
    echo 'Please, provide a Faust file to process !'
    echo ''
    echoHelp
fi

#-------------------------------------------------------------------
# dispatch command arguments
#-------------------------------------------------------------------

POLY="POLY"
EFFECT=""
NVOICES=-1
OPTIONS=""
PLAY="false"
TEST="false"
JUCE="false"
MIDI="false"
CMAJ_EXT="cmajor";

while [ $1 ]
do
    p=$1

    if [ $p = "-help" ] || [ $p = "-h" ]; then
        echoHelp
    elif [ $p = "-nvoices" ]; then
        ARCHFILE=$FAUSTARCH/cmajor/poly-dsp.cmajor
        shift
        NVOICES=$1
    elif [ $p = "-effect" ]; then
        ARCHFILE=$FAUSTARCH/cmajor/poly-dsp-effect.cmajor
        POLY="POLY2"
        shift
        EFFECT=$1
    elif [ $p = "-midi" ]; then
        MIDI="true"
        echo "MIDI will be used"
    elif [ $p = "-play" ]; then
        PLAY="true"
    elif [ $p = "-juce" ]; then
        JUCE="true"
    elif [ $p = "-test" ]; then
        TEST="true"
    elif [ $p = "-dsp" ]; then
        CMAJ_EXT="cmajor-dsp"
    elif [ ${p:0:1} = "-" ]; then
        OPTIONS="$OPTIONS $p"
    elif [[ -f "$p" ]] && [ ${p: -4} == ".dsp" ]; then
        FILES="$FILES $p"
    else
        OPTIONS="$OPTIONS $p"
    fi

shift

done

createCmajorPatch()
{
    (
    echo -e '{'
    echo -e "\t\"CmajorVersion\": 1,"
    echo -e "\t\"ID\": \"grame.cmajor.$1\","
    echo -e '\t"version": "1.0",'
    echo -e "\t\"name\": \"$1\","
    echo -e '\t"description": "Cmajor example",'
    echo -e '\t"category": "synth",'
    echo -e '\t"manufacturer": "GRAME",'
    echo -e '\t"website": "https://faust.grame.fr",'
    if [ $MIDI = "true" ]; then
        echo -e '\t"isInstrument": true,'
    else
        echo -e '\t"isInstrument": false,'
    fi
    echo -e "\t\"source\": \"$1.cmajor\""
    echo -e '}'
    ) > "$2"
}

#-------------------------------------------------------------------
# compile the *.dsp files
#-------------------------------------------------------------------

for p in $FILES; do

    CUR=$(pwd)
    f=$(basename "$p")
    SRCDIR=$(dirname "$p")

    # create a temporary dir
    dspName="${f%.dsp}"
    TDR=$(mktemp -d faust.XXXXXX)
    TMP="$TDR/${f%.dsp}"
    mkdir "$TMP"

    # compile Faust to Cmajor
    if [ $POLY = "POLY2" ]; then
       if [ $EFFECT = "auto" ]; then
            cat > $TMP/effect.dsp << EndOfCode
            adapt(1,1) = _;
            adapt(2,2) = _,_;
            adapt(1,2) = _ <: _,_;
            adapt(2,1) = _,_ :> _;
            adaptor(F,G) = adapt(outputs(F),inputs(G));
            process = adaptor(library("$SRCDIR/$f").process, library("$SRCDIR/$f").effect) : library("$SRCDIR/$f").effect;
EndOfCode
            faust -lang cmajor-poly -cn "${f%.dsp}" -json -a $ARCHFILE $OPTIONS "$SRCDIR/$f" -o "$TMP/${f%.dsp}_tmp1.cmajor" || exit
            faust -lang $CMAJ_EXT -cn effect "$TMP/effect.dsp" -o "$TMP/effect.cmajor" || exit
        else
            faust -lang cmajor-poly -cn "${f%.dsp}" -json -a $ARCHFILE $OPTIONS "$SRCDIR/$f" -o "$TMP/${f%.dsp}_tmp1.cmajor" || exit
            faust -lang $CMAJ_EXT -cn effect "$SRCDIR/$EFFECT" -o "$TMP/effect.cmajor" || exit
        fi
        cat "$TMP/effect.cmajor" > "$TMP/${f%.dsp}.cmajor"
        sed -e "s/NVOICES/"$NVOICES"/g" "$TMP/${f%.dsp}_tmp1.cmajor" >> "$TMP/${f%.dsp}_tmp2.cmajor"
        cat "$TMP/${f%.dsp}_tmp2.cmajor" >> "$TMP/${f%.dsp}.cmajor"
    else
        if [ $NVOICES != -1 ]; then
            faust -lang cmajor-poly -cn "${f%.dsp}" -json -a $ARCHFILE $OPTIONS "$SRCDIR/$f" -o "$TMP/${f%.dsp}_tmp1.cmajor" || exit
        else
            faust -lang $CMAJ_EXT -cn "${f%.dsp}" -json -a $ARCHFILE $OPTIONS "$SRCDIR/$f" -o "$TMP/${f%.dsp}_tmp1.cmajor" || exit
        fi
        sed -e "s/NVOICES/"$NVOICES"/g" "$TMP/${f%.dsp}_tmp1.cmajor" >> "$TMP/${f%.dsp}.cmajor"
    fi

    # create patch
    createCmajorPatch "${f%.dsp}" "${f%.dsp}.cmajorpatch"
    
    rm -f $p.json "$TMP/${f%.dsp}_tmp1.cmajor" "$TMP/${f%.dsp}_tmp2.cmajor" "$TMP/effect.dsp"
    cp -r "$TMP/${f%.dsp}.cmajor" "$SRCDIR/${f%.dsp}.cmajor"
    rm -rf "$TDR"

    #  create final folder
    rm -rf "$SRCDIR/$dspName"
    mkdir "$SRCDIR/$dspName"
    mv "$SRCDIR/${f%.dsp}.cmajor" "$SRCDIR/$dspName"
    mv "${f%.dsp}.cmajorpatch" "$SRCDIR/$dspName"
    
    if [ $PLAY = "true" ] ; then
        cmaj play "$SRCDIR/$dspName/${f%.dsp}.cmajorpatch"
    fi
    
    if [ $TEST = "true" ] ; then
        cmaj render --length=100000 --rate=44100 --output=/dev/null "$SRCDIR/$dspName/${f%.dsp}.cmajorpatch"
    fi

    # collect binary file name for FaustGIDE
    BINARIES="$SRCDIR/$dspName/${f%.dsp}.cmajor;$SRCDIR/$dspName/${f%.dsp}.cmajorpatch"
      
    if [ $JUCE = "true" ] ; then
        cmaj generate --juce "$SRCDIR/$dspName/${f%.dsp}.cmajorpatch" --output="$SRCDIR/$dspName/${f%.dsp}"
        BINARIES="$BINARIES;$SRCDIR/$dspName/${f%.dsp}"
    fi

done

echo $BINARIES


