#!/bin/sh

#if [[ -z $1  || -z  $2 ]]; then
if [[ -z $1 ]]; then
        echo -e "ERREUR : paramétre(s) manquant(s) "
        echo -e "Passer en paramétre : "
	echo -e "1. Nom du profil (ex : kubauto)"
#	echo -e "2. Version de l'Alpine (forcé à edge pour le moment)"
        echo ""
        exit 1
else
PROFILENAME=$1
ALPINE_VERSION=edge
export $PROFILENAME


cat << EOF > ~/aports/scripts/mkimg.$PROFILENAME.sh
profile_$PROFILENAME() {
        profile_standard
        kernel_cmdline="unionfs_size=512M console=tty0 console=ttyS0,115200"
        syslinux_serial="0 115200"
        apks="\$apks mtools parted rsync vim util-linux curl coreutils strace dhcp dhcpcd kubeadm lvm2 dfc cni-plugin-flannel cni-plugins
	flannel flannel-contrib-cni kubelet kubeadm kubectl uuidgen docker docker-compose
                "
        local _k _a
        for _k in \$kernel_flavors; do
                apks="\$apks linux-\$_k"
                for _a in \$kernel_addons; do
                        apks="\$apks \$_a-\$_k"
                done
        done
        apks="\$apks linux-firmware"
	hostname="$PROFILENAME"
	apkovl="genapkovl-$PROFILENAME.sh"
}
EOF

chmod +x ~/aports/scripts/mkimg.$PROFILENAME.sh

cat << 'EOP' > ~/aports/scripts/genapkovl-$PROFILENAME.sh
#!/bin/sh -e

HOSTNAME="$1"
if [ -z "$HOSTNAME" ]; then
	echo "usage: $0 hostname"
	exit 1
fi

cleanup() {
	rm -rf "$tmp"
}

makefile() {
	OWNER="$1"
	PERMS="$2"
	FILENAME="$3"
	cat > "$FILENAME"
	chown "$OWNER" "$FILENAME"
	chmod "$PERMS" "$FILENAME"
}

rc_add() {
	mkdir -p "$tmp"/etc/runlevels/"$2"
	ln -sf /etc/init.d/"$1" "$tmp"/etc/runlevels/"$2"/"$1"
}

tmp="$(mktemp -d)"
trap cleanup EXIT

mkdir -p "$tmp"/etc
makefile root:root 0644 "$tmp"/etc/hostname <<EOF
$HOSTNAME
EOF

mkdir -p "$tmp"/etc/network
makefile root:root 0644 "$tmp"/etc/network/interfaces <<EOF
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp
EOF

mkdir -p "$tmp/root/.ssh"
mkdir -p "$tmp/etc/apk"
echo '/media/cdrom' >> "$tmp/etc/apk/repositories"
echo 'http://dl-cdn.alpinelinux.org/alpine/$ALPINE_VERSION/main' >> "$tmp/etc/apk/repositories"
echo 'http://dl-cdn.alpinelinux.org/alpine/$ALPINE_VERSION/community' >> "$tmp/etc/apk/repositories"
echo 'http://dl-cdn.alpinelinux.org/alpine/$ALPINE_VERSION/testing' >> "$tmp/etc/apk/repositories"

mkdir -p "$tmp"/etc/apk
makefile root:root 0644 "$tmp"/etc/apk/world <<EOF
alpine-base
util-linux
xfsprogs
vim
dfc
cni-plugin-flannel
cni-plugins
flannel
flannel-contrib-cni
kubelet
kubeadm
kubectl
uuidgen
docker
docker-compose
EOF

mkdir -p "$tmp"/etc/local.d
# =------------------------------------------------------------=
# Hello preseed script, my new friend.
#
# Note the single quotes around the EOF, to avoid evaluation
# at the time genapkovl runs.
# =------------------------------------------------------------=
makefile root:root 0755 "$tmp"/etc/local.d/preseed.start <<'EOF'
#!/bin/sh
# Fail fast, if we make it onto a live system.
test "$(hostname)" = "" || exit 111
# Here would be the preseed script in earnest. One that sets
# the hostname to something else than `preseed`, or at least
# makes sure the /etc/local.d/preseed.start isn't carried over.
# Lest you're a glutton for punishment.
echo "preseeded at $(date)" >> /root/preseeded.txt
EOF

rc_add devfs sysinit
rc_add dmesg sysinit
rc_add mdev sysinit
rc_add hwdrivers sysinit
rc_add modloop sysinit

rc_add hwclock boot
rc_add modules boot
rc_add sysctl boot
rc_add hostname boot
rc_add bootmisc boot
rc_add syslog boot
# we want our preseed to run & have network while at it
rc_add networking boot
rc_add local boot

rc_add mount-ro shutdown
rc_add killprocs shutdown
rc_add savecache shutdown

tar -c -C "$tmp" etc | gzip -9n > $HOSTNAME.apkovl.tar.gz
EOP
chmod +x ~/aports/scripts/genapkovl-$PROFILENAME.sh

# Create output dir
if test ! -d ~/iso; then
  echo "Creating output dir"
  mkdir -p ~/iso
fi

echo "ISO generation"
cd ~/aports/scripts/
sh mkimage.sh --tag $ALPINE_VERSION \
 --outdir ~/iso \
 --arch x86_64 \
 --repository http://dl-cdn.alpinelinux.org/alpine/$ALPINE_VERSION/main \
 --repository http://dl-cdn.alpinelinux.org/alpine/$ALPINE_VERSION/community \
 --repository http://dl-cdn.alpinelinux.org/alpine/$ALPINE_VERSION/testing \
 --profile $PROFILENAME

fi