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#! /bin/sh

RED="\033[0;31m"
RESET="\033[0m"

TEMPLATE_DIR=$HOME/.local/share/godot/export_templates

DIR=godot
FORCE=0
CLEAN=0
ANDROID=0
OPTIMIZED=0
VERSION=4

for I in  "$@"
do
    case $I in
        f)
        FORCE=1
        ;;
        a)
        ANDROID=1
        ;;
        c)
        CLEAN=1
        ;;
        o)
        OPTIMIZED=1
        ;;
        3)
        VERSION=$I
        TEMPLATE_DIR=$HOME/.local/share/godot/templates
    esac
done
TEMPLATE_DIR=$TEMPLATE_DIR/$VERSION.x

if [ $VERSION == 4 ]
then
  DIR=godot-master
  platform=linuxbsd
  target=editor
  targets="template_release template_debug"
else
  platform=x11
  target=release_debug
  targets="release debug"
fi

function build()
{

    J=$(nproc)

    export CXX=/usr/lib/ccache/bin/clang++
    export CC=/usr/lib/ccache/bin/clang

    [ -f custom.py ] && rm custom.py
    rm ./bin/*
    [ $CLEAN -eq 1 ] && scons platform=$platform --clean

    [ $OPTIMIZED -eq 1 ] && opt_flags="use_static_ccp=yes lto=full debug_symbols=no"
    common_flags="use_llvm=yes linker=lld debug_symbols=no lto=none use_static_cpp=no" # arch does not provide libatomic.a through gcc-libs

    # https://docs.godotengine.org/en/3.2/development/compiling/compiling_for_x11.html
    echo -e "build : ${RED}$platform$RESET target=$RED$target$RESET"
    time scons -j$J platform=$platform target=$target tools=yes colored=yes pulseaudio=no bits=64 $common_flags warnings=no #custom_modules=../modules

    if [ $ANDROID -eq 1 ]
    then
        cp ../custom.py .
        export ANDROID_HOME=/opt/android-sdk
        export ANDROID_NDK_ROOT=/opt/android-ndk
        [ ! -d $TEMPLATE_DIR ] && mkdir $TEMPLATE_DIR

        [ $CLEAN -eq 1 ] && scons platform=android --clean
        # https://docs.godotengine.org/en/3.2/development/compiling/compiling_for_android.html
        echo -e "${RED}gradlew clean$RESET"
        pushd platform/android/java && ./gradlew --no-daemon cleanGodotTemplates && popd
        ndk_platform=android-22
        for target in $targets;
        do
            for arch in arm64v8 armv7; #x86_6
            do
                if [ $VERSION == 3 ]
                then
                  aarch="android_arch"
                else
                  aarch="arch"
                fi
                echo -e "build : ${RED}android$RESET $aarch=$RED$arch$RESET target=$RED$target$RESET ndk_platform=$RED$ndk_platform$RESET"
                time scons -j$J platform=android target=$target $aarch=$arch ndk_platform=$ndk_platform tools=no disable_3d=true $common_flags
            done
        done
        echo -e "${RED}gradlew build$RESET"
        pushd platform/android/java && ./gradlew --no-daemon generateGodotTemplates && popd

        cp bin/android* $TEMPLATE_DIR/
        rm custom.py
    fi
}

pushd $DIR

    if [ $CLEAN -eq 1 ]
    then
        find -name \*.o -delete
        find -name \*.gen.h -delete
        find -name \*.gen.cpp -delete
    fi

    HEAD_PREV=$(git log HEAD~1.. --pretty=format:'%H' | head -n1)
    echo -e "current HEAD : $RED$HEAD_PREV$RESET"
    git pull
    HEAD_NOW=$(git log HEAD~1.. --pretty=format:'%H' | head -n1)
    echo -e "updated HEAD : $RED$HEAD_NOW$RESET"

    if [ $FORCE = 1 ] || [ "$HEAD_PREV" != "$HEAD_NOW" ]
    then
        build
        git log $HEAD_PREV..
    fi

    strip ./bin/godot.*
    ls -lh ./bin/
popd

# https://godot-build-options-generator.github.io
# scons -j4 platform=linuxbsd target=release_debug tools=yes pulseaudio=no bits=64 warnings=no #custom_modules=../modules
# scons -j4 platform=android target=debug android_arch=arm64v8 ndk_platform=android-22 tools=no disable_3d=true