#!/bin/bash -xe

set -o pipefail

# Configure systemd-growfs-root
mkdir "${root:?}"/etc/systemd/system/systemd-growfs-root.service.d

cat > "${root:?}"/etc/systemd/system/systemd-growfs-root.service.d/override.conf << EOF
[Unit]
ConditionFirstBoot=yes

[Service]
ExecStart=/usr/lib/systemd/systemd-growfs /sysroot

[Install]
WantedBy=multi-user.target
EOF

chroot "${root:?}" systemctl enable systemd-growfs-root.service

# Configure systemd-repart

mkdir "${root:?}"/etc/repart.d

cat > "${root:?}"/etc/repart.d/50-root.conf << EOF
[Partition]
Type=linux-generic
GrowFileSystem=yes
EOF

chroot "${root:?}" apt-get install -y systemd-repart

# Configure systemd-firstboot

mkdir "${root:?}"/etc/systemd/system/systemd-firstboot.service.d
cat > "${root:?}"/etc/systemd/system/systemd-firstboot.service.d/install.conf << EOF
[Service]
ExecStart=
ExecStart=/usr/bin/systemd-firstboot

[Install]
WantedBy=sysinit.target
EOF

chroot "${root:?}" systemctl enable systemd-firstboot.service

rm "${root:?}"/etc/machine-id