from __future__ import annotations

from typing import Any, Dict, TYPE_CHECKING, Optional

from .partitioning_conf import manage_new_and_existing_partitions, get_default_partition_layout
from ..disk import BlockDevice
from ..exceptions import DiskError
from ..menu import Menu
from ..menu.menu import MenuSelectionType

if TYPE_CHECKING:
	_: Any


def ask_for_main_filesystem_format(advanced_options=False) -> str:
	options = {'btrfs': 'btrfs', 'ext4': 'ext4', 'xfs': 'xfs', 'f2fs': 'f2fs'}

	advanced = {'ntfs': 'ntfs'}

	if advanced_options:
		options.update(advanced)

	prompt = _('Select which filesystem your main partition should use')
	choice = Menu(prompt, options, skip=False).run()
	return choice.value


def select_individual_blockdevice_usage(block_devices: list) -> Dict[str, Any]:
	result = {}

	for device in block_devices:
		layout = manage_new_and_existing_partitions(device)
		result[device.path] = layout

	return result


def select_disk_layout(preset: Optional[Dict[str, Any]], block_devices: list, advanced_options=False) -> Optional[Dict[str, Any]]:
	wipe_mode = str(_('Wipe all selected drives and use a best-effort default partition layout'))
	custome_mode = str(_('Select what to do with each individual drive (followed by partition usage)'))
	modes = [wipe_mode, custome_mode]

	warning = str(_('Are you sure you want to reset this setting?'))

	choice = Menu(
		_('Select what you wish to do with the selected block devices'),
		modes,
		explode_on_interrupt=True,
		explode_warning=warning
	).run()

	match choice.type_:
		case MenuSelectionType.Esc: return preset
		case MenuSelectionType.Ctrl_c: return None
		case MenuSelectionType.Selection:
			if choice.value == wipe_mode:
				return get_default_partition_layout(block_devices, advanced_options)
			else:
				return select_individual_blockdevice_usage(block_devices)


def select_disk(dict_o_disks: Dict[str, BlockDevice]) -> Optional[BlockDevice]:
	"""
	Asks the user to select a harddrive from the `dict_o_disks` selection.
	Usually this is combined with :ref:`archinstall.list_drives`.

	:param dict_o_disks: A `dict` where keys are the drive-name, value should be a dict containing drive information.
	:type dict_o_disks: dict

	:return: The name/path (the dictionary key) of the selected drive
	:rtype: str
	"""
	drives = sorted(list(dict_o_disks.keys()))
	if len(drives) >= 1:
		title = str(_('You can skip selecting a drive and partitioning and use whatever drive-setup is mounted at /mnt (experimental)')) + '\n'
		title += str(_('Select one of the disks or skip and use /mnt as default'))

		choice = Menu(title, drives).run()

		if choice.type_ == MenuSelectionType.Esc:
			return None

		drive = dict_o_disks[choice.value]
		return drive

	raise DiskError('select_disk() requires a non-empty dictionary of disks to select from.')