#cwd := $(notdir $(patsubst %/,%,$(dir $(abspath $(lastword $(MAKEFILE_LIST))))))
hostName    := aubergine
disk_sd     := /dev/disk/by-id/mmc-SU08G_0xb0320f0f
disk_ssd    := /dev/null
rpool       := $(hostName)
cipher      := aes-128-gcm
autotrim    := on
reservation := 1G

wipe-sd:
	sudo $$(which sgdisk) --zap-all $(disk_sd)
wipe-ssd:
	sudo $$(which sgdisk) --zap-all $(disk_ssd)
	sudo zpool labelclear -f /dev/disk/by-partlabel/$(hostName)_ssd_rpool || true

part: wipe-sd wipe-ssd
part-sd: wipe-sd
	sudo $$(which sgdisk) -a1 -n0:34:2047  -t0:EF02 -c0:"$(hostName)_sd_bios"  $(disk_sd)
	sudo $$(which sgdisk)     -n0:1M:+100M -t0:EF00 -c0:"$(hostName)_sd_efi"   $(disk_sd)
	sudo $$(which sgdisk)     -n0:0:0      -t0:8300 -c0:"$(hostName)_sd_root"  $(disk_sd)
	sudo $$(which sgdisk) --randomize-guids $(disk_sd)
	sudo $$(which sgdisk) --backup=$(hostName)_sd.sgdisk $(disk_sd)
part-ssd:
	sudo $$(which sgdisk) -a1 -n0:34:2047  -t0:EF02 -c0:"$(hostName)_ssd_bios"  $(disk_ssd)
	sudo $$(which sgdisk)     -n0:1M:+100M -t0:EF00 -c0:"$(hostName)_ssd_efi"   $(disk_ssd)
	sudo $$(which sgdisk)     -n0:0:+256M  -t0:8300 -c0:"$(hostName)_ssd_boot"  $(disk_ssd)
	sudo $$(which sgdisk)     -n0:0:+8G    -t0:8200 -c0:"$(hostName)_ssd_swap"  $(disk_ssd)
	sudo $$(which sgdisk)     -n0:0:0      -t0:BF01 -c0:"$(hostName)_ssd_rpool" $(disk_ssd)
	sudo $$(which sgdisk) --randomize-guids $(disk_ssd)
	sudo $$(which sgdisk) --backup=$(hostName)_ssd.sgdisk $(disk_ssd)

format: umount format-sd-efi format-sd-boot format-ssd-efi format-ssd-boot
format-sd: format-sd-root format-sd-efi
format-sd-efi: | format-sd-root
	sudo blkid                       /dev/disk/by-partlabel/$(hostName)_sd_efi -t TYPE=vfat || \
	sudo mkfs.vfat -F 32 -s 1 -n EFI /dev/disk/by-partlabel/$(hostName)_sd_efi
format-sd-root:
	sudo mkdir -p /mnt/install/$(hostName)
	sudo blkid -t TYPE=ext4 /dev/disk/by-partlabel/$(hostName)_sd_root; test $$? != 2 || \
	sudo mkfs.ext4          /dev/disk/by-partlabel/$(hostName)_sd_root
format-ssd-efi:
	sudo blkid                       /dev/disk/by-partlabel/$(hostName)_ssd_efi -t TYPE=vfat || \
	sudo mkfs.vfat -F 32 -s 1 -n EFI /dev/disk/by-partlabel/$(hostName)_ssd_efi
format-ssd-boot:
	sudo blkid -t TYPE=ext2 /dev/disk/by-partlabel/$(hostName)_ssd_boot; test $$? != 2 || \
	sudo mkfs.ext2          /dev/disk/by-partlabel/$(hostName)_ssd_boot

mount: mount-root mount-efi
mount-root:
	sudo mkdir -p /mnt/install/$(hostName)
	sudo mountpoint /mnt/install/$(hostName) || \
	sudo mount -v /dev/disk/by-partlabel/$(hostName)_sd_root /mnt/install/$(hostName)
mount-efi: | mount-root
	sudo mkdir -p /mnt/install/$(hostName)/boot/efi
	sudo mountpoint /mnt/install/$(hostName)/boot/efi || \
	sudo mount -v /dev/disk/by-partlabel/$(hostName)_sd_efi /mnt/install/$(hostName)/boot/efi

bootstrap: mount
	# Workaround https://dev.gnupg.org/T3908
	chmod o+rw $$GPG_TTY $$XAUTHORITY
	
	sudo --preserve-env \
	$$(which nixos-install) \
	 --root /mnt/install/$(hostName) \
	 --flake '.#$(hostName)' \
	 --no-root-passwd \
	 --no-channel-copy \
	 --show-trace
	
	# End workaround https://dev.gnupg.org/T3908
	chmod o-rw $$GPG_TTY $$XAUTHORITY

umount:
	for p in \
	 boot/efi \
	 boot \
	 home \
	 nix \
	 var/cache \
	 var/log \
	 var/tmp \
	 var \
	 "" \
	 ; do \
		! sudo mountpoint /mnt/install/$(hostName)/"$$p" || \
		sudo umount -v /mnt/install/$(hostName)/"$$p" ; \
	 done
	! sudo zpool list $(rpool) 2>/dev/null || \
	zfs get -H encryption $(rpool) | \
	grep -q '^$(rpool)\s*encryption\s*off' || \
	zfs get -H keystatus $(rpool) | \
	grep -q '^$(rpool)\s*keystatus\s*unavailable' || \
	sudo zfs unload-key $(rpool)
	#! sudo zpool list bpool 2>/dev/null || \
	#sudo zpool export bpool
	! sudo zpool list $(rpool) 2>/dev/null || \
	sudo zpool export $(rpool)