make_img

#!/bin/sh

clean_src() {
	for f in packages/*; do
		if [ -d "$f" ]; then
			echo "Removing $f sources"
			rm -rf $f/{out,src}
		fi
	done
}

clean_downloads() {
	echo "Removing downloaded packages"
	rm -rf download/*
}

clean() {
	clean_src
	clean_downloads
}

build() {

	cd $BASEDIR

	# Build packages specified in pkg_list file
	sed '/^[ \t]*$/d' $BASEDIR/pkg_list | while read -r pkg_name; do
		echo "Building $pkg_name"
		cd $BASEDIR/packages/"$pkg_name"
		./build
	done

	echo "Creating blank rootfs image (img directory)"
	mkdir -p img
	cd img
	IMGDIR="$(pwd)"
	rm nulllinux_rootfs_x86_64.img
	dd if=/dev/zero of=nulllinux_rootfs_x86_64.img bs=1M count=$IMG_SIZE
	mkfs.ext4 nulllinux_rootfs_x86_64.img

	echo "Mounting newly created image"
	TMPDIR="$(pwd)/tmpdir"
	mkdir -p $TMPDIR
	sudo mount -t ext4 nulllinux_rootfs_x86_64.img $TMPDIR -o loop

	echo "Copying packages files to image"
	sed '/^[ \t]*$/d' $BASEDIR/pkg_list | while read -r pkg_name; do
		echo "Copying $pkg_name"
		cd $BASEDIR/packages/"$pkg_name"
		sudo cp -r out/* $TMPDIR
		if [ -f final ]; then
			./final $TMPDIR
		fi
	done

	echo "Unmounting image"
	cd $IMGDIR
	sudo sync
	sudo umount $TMPDIR
	sudo rm -rf $TMPDIR

	echo "Done!"
	exit 0
}

if [ "$(
	cd "$(dirname "$0")" >/dev/null 2>&1
	pwd -P
)" != "$(pwd -P)" ]; then
	echo "Run this script from the script directory!"
	exit 1
fi

source ./system_config
source ./helpers

check_if_root

if [ "$#" == 0 ]; then
	echo "Usage: ./makeimg [build] [clean_src] [clean_downloads] [clean]"
	exit 0
fi

BASEDIR="$(pwd -P)"

case $1 in
"build") build ;;
"clean_src") clean_src ;;
"clean_downloads") clean_downloads ;;
"clean") clean ;;
*) echo "Unknown parameter passed: $1" ;;
esac