TERMUX_PKG_HOMEPAGE=https://elinux.org/Android_aapt
TERMUX_PKG_DESCRIPTION="Android Asset Packaging Tool"
TERMUX_PKG_LICENSE="Apache-2.0"
TERMUX_PKG_MAINTAINER="@termux"
_TAG_VERSION=8.1.0
_TAG_REVISION=81
TERMUX_PKG_VERSION=${_TAG_VERSION}.${_TAG_REVISION}
TERMUX_PKG_SRCURL=(https://android.googlesource.com/platform/frameworks/base
                   https://android.googlesource.com/platform/system/core
                   https://android.googlesource.com/platform/build
                   https://android.googlesource.com/platform/external/safe-iop)
TERMUX_PKG_GIT_BRANCH=android-${_TAG_VERSION}_r${_TAG_REVISION}
TERMUX_PKG_SHA256=(SKIP_CHECKSUM
                   SKIP_CHECKSUM
                   SKIP_CHECKSUM
                   SKIP_CHECKSUM)
TERMUX_PKG_SKIP_SRC_EXTRACT=true
TERMUX_PKG_BUILD_IN_SRC=true
TERMUX_PKG_DEPENDS="libc++, libexpat, libpng, libzopfli, zlib"

termux_step_post_get_source() {
	# FIXME: We would like to enable checksums when downloading
	# tar files, but they change each time as the tar metadata
	# differs: https://github.com/google/gitiles/issues/84

	for i in $(seq 0 $(( ${#TERMUX_PKG_SRCURL[@]}-1 ))); do
		git clone --depth 1 --single-branch \
			--branch $TERMUX_PKG_GIT_BRANCH \
			${TERMUX_PKG_SRCURL[$i]}
	done

	# Get zopfli source:
	local ZOPFLI_VER=$(bash -c ". $TERMUX_SCRIPTDIR/packages/libzopfli/build.sh; echo \$TERMUX_PKG_VERSION")
	local ZOPFLI_SHA256=$(bash -c ". $TERMUX_SCRIPTDIR/packages/libzopfli/build.sh; echo \$TERMUX_PKG_SHA256")
	local ZOPFLI_TARFILE=$TERMUX_PKG_CACHEDIR/zopfli-${ZOPFLI_VER}.tar.gz
	termux_download \
		"https://github.com/google/zopfli/archive/zopfli-${ZOPFLI_VER}.tar.gz" \
		$ZOPFLI_TARFILE \
		$ZOPFLI_SHA256
	tar xf $ZOPFLI_TARFILE
	mv zopfli-zopfli-$ZOPFLI_VER zopfli
}

termux_step_pre_configure() {
	# Certain packages are not safe to build on device because their
	# build.sh script deletes specific files in $TERMUX_PREFIX.
	if $TERMUX_ON_DEVICE_BUILD; then
		termux_error_exit "Package '$TERMUX_PKG_NAME' is not safe for on-device builds."
	fi

	termux_setup_protobuf

	CFLAGS+=" -fPIC"
	CXXFLAGS+=" -fPIC"

	_TMP_LIBDIR=$TERMUX_PKG_SRCDIR/_lib
	rm -rf $_TMP_LIBDIR
	mkdir -p $_TMP_LIBDIR
	_TMP_BINDIR=$TERMUX_PKG_SRCDIR/_bin
	rm -rf $_TMP_BINDIR
	mkdir -p $_TMP_BINDIR

	LDFLAGS+=" -L$_TMP_LIBDIR"
}

termux_step_make() {
	. $TERMUX_PKG_BUILDER_DIR/sources.sh

	local CORE_INCDIR=$TERMUX_PKG_SRCDIR/core/include
	local LIBBASE_SRCDIR=$TERMUX_PKG_SRCDIR/core/base
	local LIBCUTILS_SRCDIR=$TERMUX_PKG_SRCDIR/core/libcutils
	local SAFE_IOP_SRCDIR=$TERMUX_PKG_SRCDIR/safe-iop
	local LIBUTILS_SRCDIR=$TERMUX_PKG_SRCDIR/core/libutils
	local LIBZIPARCHIVE_SRCDIR=$TERMUX_PKG_SRCDIR/core/libziparchive
	local ANDROIDFW_SRCDIR=$TERMUX_PKG_SRCDIR/base/libs/androidfw
	local AAPT_SRCDIR=$TERMUX_PKG_SRCDIR/base/tools/aapt
	local AAPT2_SRCDIR=$TERMUX_PKG_SRCDIR/base/tools/aapt2
	local ZIPALIGN_SRCDIR=$TERMUX_PKG_SRCDIR/build/tools/zipalign

	# Build libcutils:
	cd $LIBCUTILS_SRCDIR
	local LIBCUTILS_CPPFLAGS="$CPPFLAGS \
		-I. \
		-I./include \
		-I$CORE_INCDIR"
	for f in $libcutils_sources_cpp; do
		$CXX $CXXFLAGS $LIBCUTILS_CPPFLAGS $f -c
	done
	for f in $libcutils_sources_c; do
		$CC $CFLAGS $LIBCUTILS_CPPFLAGS -Dchar16_t=uint16_t $f -c
	done
	$CC $CFLAGS *.o -shared $LDFLAGS \
		-llog \
		-o $_TMP_LIBDIR/libandroid-cutils.so

	# Build libutils:
	cd $LIBUTILS_SRCDIR
	$CC $CFLAGS $CPPFLAGS -I$SAFE_IOP_SRCDIR/include \
		$SAFE_IOP_SRCDIR/src/safe_iop.c -c -o safe_iop.o
	local LIBUTILS_CPPFLAGS="$CPPFLAGS \
		-I. \
		-I$SAFE_IOP_SRCDIR/include \
		-I$CORE_INCDIR"
	for f in $libutils_sources; do
		$CXX $CXXFLAGS $LIBUTILS_CPPFLAGS $f -c
	done
	$CXX $CXXFLAGS *.o -shared $LDFLAGS \
		-landroid-cutils \
		-llog \
		-o $_TMP_LIBDIR/libandroid-utils.so

	# Build libbase:
	cd $LIBBASE_SRCDIR
	local LIBBASE_CPPFLAGS="$CPPFLAGS \
		-I./include \
		-I$CORE_INCDIR"
	for f in $libbase_sources; do
		$CXX $CXXFLAGS $LIBBASE_CPPFLAGS $f -c
	done
	$CXX $CXXFLAGS *.o -shared $LDFLAGS \
		-llog \
		-o $_TMP_LIBDIR/libandroid-base.so

	# Build libziparchive:
	cd $LIBZIPARCHIVE_SRCDIR
	local LIBZIPARCHIVE_CPPFLAGS="$CPPFLAGS \
		-I./include \
		-I$LIBBASE_SRCDIR/include \
		-I$CORE_INCDIR"
	for f in $libziparchive_sources; do
		$CXX $CXXFLAGS $LIBZIPARCHIVE_CPPFLAGS $f -c
	done
	$CXX $CXXFLAGS *.o -shared $LDFLAGS \
		-landroid-base \
		-llog \
		-o $_TMP_LIBDIR/libandroid-ziparchive.so

	# Build libandroidfw:
	cd $ANDROIDFW_SRCDIR
	local ANDROIDFW_CPPFLAGS="$CPPFLAGS \
		-I./include \
		-I$LIBBASE_SRCDIR/include \
		-I$LIBZIPARCHIVE_SRCDIR/include \
		-I$CORE_INCDIR"
	for f in $androidfw_sources; do
		$CXX $CXXFLAGS $ANDROIDFW_CPPFLAGS $f -c
	done
	$CXX $CXXFLAGS *.o -shared $LDFLAGS \
		-landroid-base \
		-landroid-ziparchive \
		-llog \
		-o $_TMP_LIBDIR/libandroid-fw.so

	# Build aapt:
	cd $AAPT_SRCDIR
	local AAPT_CPPFLAGS="$CPPFLAGS \
		-I./include \
		-I$LIBBASE_SRCDIR/include \
		-I$ANDROIDFW_SRCDIR/include \
		-I$CORE_INCDIR"
	for f in *.cpp; do
		$CXX $CXXFLAGS $AAPT_CPPFLAGS $f -c
	done
	$CXX $CXXFLAGS *.o $LDFLAGS \
		-landroid-fw \
		-landroid-utils \
		-llog \
		-lexpat \
		-lpng \
		-lz \
		-o $_TMP_BINDIR/aapt

	# Build aapt2:
	cd $AAPT2_SRCDIR
	local AAPT2_CPPFLAGS="$CPPFLAGS \
		-I. \
		-I./include \
		-I$LIBBASE_SRCDIR/include \
		-I$LIBZIPARCHIVE_SRCDIR/include \
		-I$ANDROIDFW_SRCDIR/include \
		-I$CORE_INCDIR"
	for f in $libaapt2_sources_proto; do
		protoc --cpp_out=. $f
	done
	for f in $aapt2_sources_cpp; do
		$CXX $CXXFLAGS $AAPT2_CPPFLAGS $f -c -o ${f%.*}.o
	done
	$CXX $CXXFLAGS *.o */*.o $LDFLAGS \
		-landroid-base \
		-landroid-fw \
		-landroid-utils \
		-landroid-ziparchive \
		-llog \
		-lexpat \
		-lpng \
		-lprotobuf \
		-o $_TMP_BINDIR/aapt2

	# Build zipalign:
	cd $ZIPALIGN_SRCDIR
	local ZIPALIGN_CPPFLAGS="$CPPFLAGS \
		-I$TERMUX_PKG_SRCDIR/zopfli/src \
		-I$ANDROIDFW_SRCDIR/include \
		-I$CORE_INCDIR"
	for f in *.cpp; do
		$CXX $CXXFLAGS $ZIPALIGN_CPPFLAGS $f -c
	done
	$CXX $CXXFLAGS *.o $LDFLAGS \
		-landroid-fw \
		-landroid-utils \
		-llog \
		-lzopfli \
		-lz \
		-o $_TMP_BINDIR/zipalign
}

termux_step_make_install() {
	install -Dm600 -t $TERMUX_PREFIX/lib \
		$_TMP_LIBDIR/libandroid-{cutils,utils,base,ziparchive,fw}.so
	install -Dm700 -t $TERMUX_PREFIX/bin \
		$_TMP_BINDIR/{aapt,aapt2,zipalign}

	# Create an android.jar with AndroidManifest.xml and resources.arsc:
	cd $TERMUX_PKG_TMPDIR
	rm -rf android-jar
	mkdir android-jar
	cd android-jar
	cp $ANDROID_HOME/platforms/android-28/android.jar .
	unzip -q android.jar
	mkdir -p $TERMUX_PREFIX/share/aapt
	jar cfM $TERMUX_PREFIX/share/aapt/android.jar AndroidManifest.xml resources.arsc
}