#! /bin/sh

# archlinux setup :
# yay -S jre8-openjdk-headless jdk17-openjdk
# yay -S android-sdk android-sdk-platform-tools
#  archlinux-java set java-8-openjdk/jre
#  sdkmanager "ndk;23.2.8568313"
#  sdkmanager "cmake;3.18.1"
#  sdkmanager "build-tools;34.0.0"
#  sdkmanager "platforms;android-34"
#  archlinux-java set java-17-openjdk

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

SRC_DIR=godot-master

FORCE=0
CLEAN=0
ANDROID=0

VERSION=4
TEMPLATE_DIR=$HOME/.local/share/godot/export_templates
TEMPLATE_DIR=$TEMPLATE_DIR/$VERSION.x

platform=linuxbsd
target=editor
targets="template_release template_debug"
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
linux_tools="tools=yes colored=yes pulseaudio=no bits=64 warnings=no" #custom_modules=../modules

#export CXX=/usr/lib/ccache/bin/clang++
#export CC=/usr/lib/ccache/bin/clang
#export ANDROID_HOME=/opt/android-sdk
#export ANDROID_NDK_ROOT=/opt/android-ndk

for I in  "$@"
do
    case $I in
        f)
        FORCE=1
        ;;
        a)
        ANDROID=1
        ;;
        c)
        CLEAN=1
        ;;
    esac
done

function build()
{

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

    # https://docs.huihoo.com/godotengine/godot-docs/godot/reference/compiling_for_x11.html
    echo -e "build : ${RED}$platform$RESET target=$RED$target$RESET"
    time scons platform=$platform target=$target $linux_flags $common_flags #warnings=no #custom_modules=../modules

    if [ $ANDROID -eq 1 ]
    then
        #[ -f ../custom.py ] && cp ../custom.py .
        [ ! -d $TEMPLATE_DIR ] && mkdir $TEMPLATE_DIR

        # https://docs.huihoo.com/godotengine/godot-docs/godot/reference/compiling_for_android.html
        [ $CLEAN -eq 1 ] && pushd platform/android/java && echo -e "${RED}gradlew clean$RESET" && ./gradlew --no-daemon cleanGodotTemplates && popd
        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$RESET"
                time scons platform=android target=$target $aarch=$arch tools=no disable_3d=true $common_flags
            done
        done
        pushd platform/android/java
        echo -e "${RED}gradlew build$RESET" && ./gradlew --no-daemon build
        echo -e "${RED}gradlew generateGodotTemplates$RESET" && ./gradlew --no-daemon generateGodotTemplates
        popd

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

pushd $SRC_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 tools=no disable_3d=true