#!/bin/bash

if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
    set -x
fi
set -eu
set -o pipefail

# generate ostree in root
cd /
ostree admin os-init fedora-atomic
ostree remote add --set=gpg-verify=false fedora-atomic ${FEDORA_ATOMIC_TREE_URL}
ostree pull fedora-atomic ${FEDORA_ATOMIC_TREE_REF}
ostree remote delete fedora-atomic
ostree admin deploy --os=fedora-atomic ${FEDORA_ATOMIC_TREE_REF} --karg-proc-cmdline --karg=selinux=0

# copy /etc/fstab to the deployed directory
SYSROOT=/ostree/deploy/fedora-atomic/deploy/${FEDORA_ATOMIC_TREE_REF}.0
cp /etc/fstab $SYSROOT/etc/

# need to find the generated images
DEPLOYED_DIRECTORY=$(find /boot/ostree -name fedora-atomic-* -type d)
DEPLOYED_ID=${DEPLOYED_DIRECTORY##*-}
INIT_IMAGE=$(find ${DEPLOYED_DIRECTORY} -name initramfs*.img)

# generate ostree boot
cat > /etc/grub.d/15_ostree <<EOF
cat <<EOL
menuentry 'Fedora 23 (ostree)' --class gnu-linux --class gnu --class os --unrestricted "ostree-0-${DIB_IMAGE_ROOT_FS_UUID}" {
set gfxpayload=text
insmod gzio
insmod part_msdos
insmod ext2
search --no-floppy --set=root --label ${DIB_ROOT_LABEL}
linux16 ${DEPLOYED_DIRECTORY}/vmlinuz root=LABEL=${DIB_ROOT_LABEL} ro nofb nomodeset vga=normal console=tty0 console=ttyS0,115200 no_timer_check rd.shell=0 ostree=/ostree/boot.1/fedora-atomic/${DEPLOYED_ID}/0
initrd16 ${INIT_IMAGE}
}
EOL
EOF
chmod +x /etc/grub.d/15_ostree

# start cloud-init on boot
ln -sf $SYSROOT/usr/lib/systemd/system/cloud-config.service $SYSROOT/etc/systemd/system/multi-user.target.wants/cloud-config.service
ln -sf $SYSROOT/usr/lib/systemd/system/cloud-final.service $SYSROOT/etc/systemd/system/multi-user.target.wants/cloud-final.service
ln -sf $SYSROOT/usr/lib/systemd/system/cloud-init.service $SYSROOT/etc/systemd/system/multi-user.target.wants/cloud-init.service
ln -sf $SYSROOT/usr/lib/systemd/system/cloud-init-local.service $SYSROOT/etc/systemd/system/multi-user.target.wants/cloud-init-local.service

# update docker configuration
cat > $SYSROOT/etc/sysconfig/docker-storage <<EOF
DOCKER_STORAGE_OPTIONS="--storage-opt dm.thinpooldev=/dev/mapper/docker-docker--pool"
EOF

# disabled docker-storage-setup
rm $SYSROOT/etc/systemd/system/multi-user.target.wants/docker-storage-setup.service

# remove previous entry and generate config
rm /etc/grub.d/10_linux
grub2-mkconfig -o /boot/grub2/grub.cfg

# remove non usable images
rm -rf /boot/vmlinuz*
rm -rf /boot/initramfs*

# image cleanup
if [ $DIB_RELEASE -ge 22 ]; then
    dnf -y remove dracut grubby kernel initscript man-pages redhat-lsb-core selinux-policy selinux-policy-targeted
    dnf autoremove
    dnf clean all
else
    yum -y remove dracut grubby kernel initscript man-pages redhat-lsb-core selinux-policy selinux-policy-targeted
    yum autoremove
    yum clean all
fi