cmake_minimum_required(VERSION 3.28) 

# dear god
project(lindows)

# find our programs
set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake.d/")
find_package(NTFS3g REQUIRED)
find_package(CoreUtils REQUIRED)
find_package(MTools REQUIRED)

# make c drive mount point
file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/lindows_c")
file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/lindows_efi")

# this should probably be a shell script, i unfortunately do not care
add_custom_command(OUTPUT lindows_c.img
	# create empty 16MiB disk image
	COMMAND "${CoreUtils_dd_EXECUTABLE}" ARGS
		if=/dev/zero
		of=lindows_c.img
		bs=1M
		count=16
	# format disk with new NTFS filesystem
	COMMAND "${NTFS3g_Mkfs_EXECUTABLE}" ARGS -F # scary!
		-L Windows
		./lindows_c.img
	# mount filesystem
	COMMAND "${NTFS3g_Mount_EXECUTABLE}" ARGS
		-o no_def_opts
		lindows_c.img
		lindows_c
	
	# create dirs
	COMMAND mkdir ARGS lindows_c/Windows
	COMMAND mkdir ARGS lindows_c/Users

	# unmount filesystem
	COMMAND "umount" ARGS lindows_c
)

# this makes the efi system partition
add_custom_command(OUTPUT lindows_efi.img
	COMMAND "${CoreUtils_dd_EXECUTABLE}" ARGS
		if=/dev/zero
		of=lindows_efi.img
		bs=1M
		count=16
	COMMAND "${MTools_Format_EXECUTABLE}" ARGS -F -i lindows_efi.img
)

# make the full disk image
add_custom_command(OUTPUT lindows.img
	COMMAND echo ARGS label: gpt > disk.sfdisk
	COMMAND echo ARGS unit: sectors >> disk.sfdisk
	COMMAND echo ARGS 1M  16M C12A7328-F81F-11D2-BA4B-00A0C93EC93B - >> disk.sfdisk
	COMMAND echo ARGS 17M 16M EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 - >> disk.sfdisk
	COMMAND "${CoreUtils_dd_EXECUTABLE}" ARGS
		if=/dev/zero
		of=lindows.img
		bs=1M
		count=64
	# partition disk
	COMMAND sfdisk ARGS lindows.img < disk.sfdisk
	# write partitions
	COMMAND "${CoreUtils_dd_EXECUTABLE}" ARGS
		if=lindows_efi.img
		of=lindows.img
		bs=1M
		count=16
		seek=1
	COMMAND "${CoreUtils_dd_EXECUTABLE}" ARGS
		if=lindows_c.img
		of=lindows.img
		bs=1M
		count=16
		seek=17
	DEPENDS lindows_c.img lindows_efi.img
	BYPRODUCTS disk.sfdisk
)

add_custom_target(lindows ALL DEPENDS lindows.img)