#!/bin/sh -xe
# clean
set_var () {
	echo ==== Init ====
	BASE_DIR=`pwd`
	echo $BASE_DIR
	PKG_DIR=$BASE_DIR/EMUL_PKG
	PKG_BIN_DIR=$PKG_DIR/data/tools/emulator
	SWAP_IMG_NAME="swap.img"
	SWAP_DIR=$PKG_BIN_DIR/storages/swap

	mkdir -p $PKG_BIN_DIR/storages/sdcard
	mkdir -p $SWAP_DIR
}

create_sdcard_image () {
	echo ==== Start creating sdcard image ====
	cd $PKG_BIN_DIR/storages/sdcard

	for size in 4 8 16 32
	do
		echo "make sdcard_${size}G image"
		${ROOTDIR}/tools/emulator/bin/qemu-img create -f raw raw_${size}G.img ${size}G
		mkfs.ext4 -F raw_${size}G.img
		${ROOTDIR}/tools/emulator/bin/qemu-img convert -O qcow2 raw_${size}G.img sdcard_ext4_${size}G.img
		rm raw_${size}G.img
	done
	echo ==== Finish creating sdcard image ====
}

check_swap_image () {
	echo ==== Start checking swap image ====
	if [ -f ${BASE_DIR}/${SWAP_IMG_NAME} ]
	then
		cp "${BASE_DIR}/${SWAP_IMG_NAME}" "${SWAP_DIR}/${SWAP_IMG_NAME}"
	else
		echo "CAUTION!! There's no ${SWAP_IMG_NAME} file."
		echo "Packaging is failed."
		exit 1;
	fi
	echo ==== Finish checking swap image ====
}

set_var

clean()
{
	echo "$SRCDIR"
	rm -rf $PKG_DIR
	rm -rf $BASE_DIR/*.zip
	rm -rf $BASE_DIR/package/emulator-storages.package.$TARGET_OS
}

# build
build()
{
	if test ! -e "${ROOTDIR}/tools/emulator/bin/qemu-img"
	then
		echo "qemu-img tools does not exist.\n"
		exit 1
	fi

	create_sdcard_image
	check_swap_image
}

# install
install()
{
	mkdir -p $SRCDIR/package/emulator-storages.package.$TARGET_OS
	mv $PKG_DIR/* $SRCDIR/package/emulator-storages.package.$TARGET_OS/
}

[ "$1" = "clean" ] && clean
[ "$1" = "build" ] && build
[ "$1" = "install" ] && install

echo "success"