#
# enable ssh for root
#

sudo bash
systemctl start sshd
passwd

#
# install script below
#

#
# kill old efi boot stuff
#

efibootmgr
efibootmgr -b 0 -B
efibootmgr -b 1 -B
efibootmgr -b 2 -B
efibootmgr -b 3 -B
efibootmgr -b 4 -B
efibootmgr

# Defining some helper variables (these will be used in later code
# blocks as well, so make sure to use the same terminal session or
# redefine them later)
DISK=/dev/disk/by-id/nvme-Seagate_FireCuda_530_ZP4000GM30013_7VS01VBM
DISK2=/dev/disk/by-id/nvme-CT2000P5PSSD8_213330E4ED05
DISK3=/dev/disk/by-id/nvme-Samsung_SSD_980_PRO_2TB_S69ENF0R846614L
HOST=neko

# ensure 4k sector size
nvme format --lbaf=1 --force $DISK
nvme id-ns -H $DISK
sleep 5

# create partition table on all disks and EFI partition
for D in $DISK $DISK2 $DISK3; do
    # kill old data
    sgdisk --zap-all $D
    blkdiscard -v $D
    wipefs -a $D
    sleep 5

    # create partitions
    parted $D -- mklabel gpt
    sgdisk -n 1:0:+1024M -c 1:"EFI System Partition" -t 1:EF00 $D
    sgdisk -n 2:0:0 -c 2:"Linux" -t 2:8e00 $D
    parted $D -- set 1 boot on
    sleep 5

    # boot partition
    mkfs.fat -F 32 -n EFIBOOT $D-part1
    sleep 5
done

# take a look at the partitions
cat /proc/partitions

# create the RAID-0, second partitions on all disks
mdadm --create /dev/md/system --level=0 --raid-devices=3 $DISK-part2 $DISK2-part2 $DISK3-part2

# create the LUKS container and open it
cryptsetup luksFormat --sector-size 4096 --batch-mode --verify-passphrase /dev/md/system
cryptsetup luksOpen /dev/md/system crypt-system

# create btrfs with volumes
mkfs.btrfs -f --features block-group-tree --label system /dev/mapper/crypt2

sleep 5

# show the pool
zpool status

sleep 5

# create all the volumes
zfs create -o mountpoint=legacy zpool/data
zfs create -o mountpoint=legacy zpool/nix
zfs create -o mountpoint=legacy zpool/tmp

# we want 64 KB recordsize
zfs set recordsize=64K zpool/data
zfs set recordsize=64K zpool/nix
zfs set recordsize=64K zpool/tmp

sleep 5

# show the pool
zpool status

sleep 5

# prepare install, tmpfs root
mount -t tmpfs none /mnt

# Create directories to mount file systems on
mkdir -p /mnt/{data,nix,home,boot,root,etc/nixos,tmp}

# mount the ESP
mount $DISK-part1 /mnt/boot

# mount volumes
mount -t zfs zpool/data /mnt/data
mount -t zfs zpool/nix /mnt/nix
mount -t zfs zpool/tmp /mnt/tmp

# bind mount persistent stuff to data
mkdir -p /mnt/data/{home,root,nixos/$HOST}
mount --bind /mnt/data/home /mnt/home
mount --bind /mnt/data/root /mnt/root
mount --bind /mnt/data/nixos/$HOST /mnt/etc/nixos

# create fake /data to have the right paths
mkdir -p /data
mount --bind /mnt/data /data

# take a look
mount

# configure
nixos-generate-config --root /mnt

# check /mnt/etc/nixos/hardware-configuration.nix /mnt/etc/nixos/configuration.nix

# copy config data from another machine including secrets

sudo scp -r /data/nixos root@192.168.13.171:/mnt/data

# install

nixos-install --option experimental-features 'nix-command flakes' --no-root-passwd --root /mnt

# unmount all stuff and sync

umount -Rl /data /mnt
zpool export -a

# shutdown once

shutdown -h now

# sync all /data after the install

sudo -E rsync -va --delete --one-file-system /data/ root@192.168.13.171:/data/