#!/bin/sh
openipc=https://github.com/openipc/firmware/releases/download/latest
builder=https://github.com/openipc/builder/releases/download/latest

if [ -z "$(dpkg -l | grep squashfs-tools)" ]; then
	echo Install the following package:
	echo sudo apt-get install squashfs-tools
	exit 0
fi

if [ -z "$1" ]; then
	echo "Usage: $0 [uboot] [firmware] [ssid] [pass]"
	exit 0
fi

uboot=u-boot-$1-nor.bin
chipset=$(echo $2 | cut -d_ -f1)
release=openipc-$1-nor.bin

mkdir -p output
if ! wget -q --show-progress $openipc/$uboot -O output/uboot.bin; then
	echo "Download failed: $openipc/$uboot"
	exit 1
fi

if ! wget -q --show-progress $builder/$2.tgz -O output/builder.tgz; then
	echo "Download failed: $builder/$2.tgz"
	exit 1
fi

tar -xf output/builder.tgz -C output
if [ -n "$3" ] && [ -n "$4" ]; then
	file=output/squashfs/usr/share/openipc/wireless.sh
	unsquashfs -d output/squashfs output/rootfs.squashfs.$chipset > /dev/null
	echo "#!/bin/sh" >> $file
	echo "fw_setenv wlanssid $3" >> $file
	echo "fw_setenv wlanpass $4" >> $file
	chmod 755 $file
	mksquashfs output/squashfs output/rootfs.$chipset -comp xz > /dev/null
else
	mv output/rootfs.squashfs.$chipset output/rootfs.$chipset
fi

dd if=/dev/zero bs=1K count=5000 status=none | tr '\000' '\377' > $release
dd if=output/uboot.bin of=$release bs=1K seek=0 conv=notrunc status=none
dd if=output/uImage.$chipset of=$release bs=1K seek=320 conv=notrunc status=none
dd if=output/rootfs.$chipset of=$release bs=1K seek=2368 conv=notrunc status=none
rm -rf output

echo "Created: $release"