extends Control

# REQUIREMENTS
# * SS-13

signal back_button_pressed

func _ready():
	# Prepare options menu before loading user settings
	var tab_bar : TabBar = $Margin/Tab.get_child(0, true)

	# This ends up easier to manage then trying to manually recreate the TabContainer's behavior
	# These buttons can be accessed regardless of the tab
	var button_list := HBoxContainer.new()
	button_list.set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)
	button_list.alignment = BoxContainer.ALIGNMENT_END
	tab_bar.add_child(button_list)

	# REQUIREMENTS
	# * UI-12
	# * UIFUN-14
	var reset_button := Button.new()
	reset_button.text = "OPTIONS_RESET"
	reset_button.pressed.connect(Events.Options.try_reset_settings)
	button_list.add_child(reset_button)

	# REQUIREMENTS
	# * UI-11
	# * UIFUN-17
	var back_button := Button.new()
	back_button.text = "OPTIONS_BACK"
	back_button.pressed.connect(_on_back_button_pressed)
	button_list.add_child(back_button)
	get_viewport().get_window().close_requested.connect(_on_window_close_requested)
	_save_overrides.call_deferred()
	Events.Options.save_settings.connect(func(_f): self._save_overrides.call_deferred())

func _notification(what):
	match what:
		NOTIFICATION_CRASH:
			_on_window_close_requested()

func _input(event):
	if self.is_visible_in_tree():
		if event.is_action_pressed("ui_cancel"):
			_on_back_button_pressed()

func _on_back_button_pressed():
	Events.Options.save_settings_to_file()
	back_button_pressed.emit()

func _on_window_close_requested() -> void:
	if visible:
		Events.Options.save_settings_to_file()

func _save_overrides() -> void:
	var override_path : String = ProjectSettings.get_setting("application/config/project_settings_override", "")
	if override_path.is_empty():
		override_path = ProjectSettings.get_setting(Events.Options.settings_file_path_setting, Events.Options.settings_file_path_default)
	var file := ConfigFile.new()
	var err_ret := file.load(override_path)
	if err_ret != OK: push_error("Failed to load overrides from %s" % override_path)
	file.set_value("display", "window/size/mode", get_viewport().get_window().mode)
	var resolution : Vector2i = Resolution.get_current_resolution()
	file.set_value("display", "window/size/viewport_width", resolution.x)
	file.set_value("display", "window/size/viewport_height", resolution.y)
	err_ret = file.save(override_path)
	if err_ret != OK: push_error("Failed to save overrides to %s" % override_path)