set -ex -o pipefail

mkdir -p $out/repart.d $out/boot
pushd $out

# Don't seem to work just to create a symlink to rootfs derivation?
# ln -sf $rootfs rootfs
mkdir rootfs
cp -prP $rootfs/* rootfs/
find rootfs/ -type d -exec chmod 755 {} \;

# set default target to basic
mkdir rootfs/usr/lib/systemd/system/basic.target.wants
ln -sf basic.target rootfs/usr/lib/systemd/system/default.target

# mount patos state
cat <<EOF > rootfs/usr/lib/systemd/system/var.mount
[Unit]
Description=Mount for /var
Before=local-fs.target

[Mount]
What=/dev/disk/by-label/patos-state
Where=/var
Type=ext2
Options=defaults

[Install]
WantedBy=basic.target
EOF
ln -sf ../var.mount rootfs/usr/lib/systemd/system/basic.target.wants/var.mount

# enable dbus
ln -sf ../dbus.service rootfs/usr/lib/systemd/system/basic.target.wants/dbus.service
ln -sf ../dbus.socket rootfs/usr/lib/systemd/system/sockets.target.wants/dbus.socket

# generate a temporary machine id
$systemd/usr/bin/systemd-machine-id-setup --root=rootfs/

cat <<EOF > rootfs/etc/passwd
root::0:0:root:/root:/bin/sh
bin:x:1:1:bin:/bin:/usr/bin/nologin
daemon:x:2:2:daemon:/:/usr/bin/nologin
mail:x:8:12:mail:/var/spool/mail:/usr/bin/nologin
ftp:x:14:11:ftp:/srv/ftp:/usr/bin/nologin
http:x:33:33:http:/srv/http:/usr/bin/nologin
uuidd:x:68:68:uuidd:/:/usr/bin/nologin
messagebus:x:81:81:messagebus:/:/usr/bin/nologin
nobody:x:99:99:nobody:/:/usr/bin/nologin
systemd-coredump:x:151:992::/var/empty:/usr/bin/nologin
systemd-network:x:152:152::/var/empty:/usr/bin/nologin
systemd-resolve:x:153:153::/var/empty:/usr/bin/nologin
systemd-timesync:x:154:154::/var/empty:/usr/bin/nologin
EOF
chmod 644 rootfs/etc/passwd

cat <<EOF > rootfs/etc/group
root:x:0:root
bin:x:1:root,bin,daemon
daemon:x:2:root,bin,daemon
sys:x:3:root,bin
adm:x:4:root,daemon
tty:x:5:
disk:x:6:root
lp:x:7:daemon
mem:x:8:
kmem:x:9:
wheel:x:10:root
ftp:x:11:
mail:x:12:
uucp:x:14:
log:x:19:root
utmp:x:20:
locate:x:21:
rfkill:x:24:
smmsp:x:25:
proc:x:26:
http:x:33:
games:x:50:
lock:x:54:
uuidd:x:68:
messagebus:x:81:
systemd-journal:x:62:
systemd-network:x:152:
systemd-resolve:x:153:
systemd-timesync:x:154:
systemd-oom:x:991:
systemd-coredump:x:992:
network:x:90:
video:x:91:
audio:x:92:
optical:x:93:
floppy:x:94:
storage:x:95:
scanner:x:96:
input:x:97:
power:x:98:
nobody:x:99:
EOF
chmod 644 rootfs/etc/group

# FIXME: remove this later (just to get a shell in the initramfs)
cat <<EOF > rootfs/usr/lib/systemd/system/demo.service
[Unit]
Description=Debug Shell (/bin/sulogin)
Conflicts=shutdown.target
Before=shutdown.target

[Service]
Environment=HOME=/root
WorkingDirectory=/root
ExecStart=/bin/sulogin
Type=idle
StandardInput=tty-force
StandardOutput=inherit
StandardError=inherit
KillMode=process
IgnoreSIGPIPE=no
SendSIGHUP=yes
Restart=always

[Install]
WantedBy=basic.target
EOF
ln -sf ../demo.service rootfs/usr/lib/systemd/system/basic.target.wants/demo.service


$systemd/usr/bin/ukify build \
  --linux $kernel/bzImage \
  --initrd $initrd/initrd.xz \
  --os-release @rootfs/etc/os-release \
  --cmdline "$kernelCmdLine" \
  -o boot/patos.efi

cp ${systemd}/usr/lib/systemd/boot/efi/systemd-bootx64.efi boot/

echo "timeout 1" > boot/loader.conf

cat <<EOF > repart.d/10-esp.conf
[Partition]
Type=esp
Format=vfat
SizeMinBytes=96M
SizeMaxBytes=96M
CopyFiles=/boot/systemd-bootx64.efi:/EFI/BOOT/BOOTX64.EFI
CopyFiles=/boot/patos.efi:/EFI/Linux/patos.efi
CopyFiles=/boot/loader.conf:/loader/loader.conf
EOF

cat <<EOF > repart.d/10-root.conf
[Partition]
Type=root
Format=erofs
Minimize=best
CopyFiles=/rootfs:/
SplitName=root
EOF

$systemd/usr/bin/systemd-repart \
  --no-pager \
  --empty=create \
  --size=auto \
  --definitions=./repart.d \
  --root=$out \
  patos-$version.raw

rm -rf rootfs
rm -rf boot

popd