class_name MainMenu extends Panel

var has_stage: bool = false:
	set(value):
		has_stage = value
		if is_node_ready():
			if save_game_handle.get_most_recent_save().current_room == 0:
				continue_button.visible = false
				continue_button.disabled = true
				new_game_button.theme_type_variation = "H1Button"
			else:
				continue_button.visible = true
				continue_button.disabled = not has_stage
				new_game_button.theme_type_variation = ""
			load_game_button.disabled = not save_game_handle.has_existing_saves()
			for child: Control in $PanelContainer.get_children():
				child.focus_mode = FOCUS_ALL if has_stage else FOCUS_NONE
				child.modulate = Color.WHITE if has_stage else Color.WEB_GRAY
				child.mouse_filter = Control.MOUSE_FILTER_STOP if has_stage else Control.MOUSE_FILTER_IGNORE
			if has_stage:
				if continue_button.visible:
					continue_button.grab_focus()
				else:
					new_game_button.grab_focus()

signal start_game(savegame: SaveGame)
signal open_settings(new_game: bool)
signal roll_credits

@onready var new_game_button: Button = $PanelContainer/NewGameButton
@onready var continue_button: Button = $PanelContainer/ContinueGameButton
@onready var load_game_button: Button = $PanelContainer/LoadGameButton
@onready var settings_button: Button = $PanelContainer/SettingsButton
@onready var settings_popup: SettingsPopup = %SettingsPopup
@onready var credits_button: Button = $PanelContainer/CreditsButton
@onready var quit_button: Button = $PanelContainer/QuitButton
@onready var save_game_handle: SaveGameHandle = %SaveGameHandle
@export var save_game_exists: bool = false:
	set(value):
		save_game_exists = value

var await_new_game: bool = false

# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	save_game_handle.picked.connect(_on_save_picked)
	if save_game_handle.get_most_recent_save().current_room == 0:
		continue_button.disabled = true
		continue_button.visible = false
		new_game_button.theme_type_variation = "H1Button"
	continue_button.pressed.connect(func(): start_game.emit(save_game_handle.get_most_recent_save()))
	new_game_button.pressed.connect(func(): save_game_handle.pick_save_slot(true))
	load_game_button.pressed.connect(func(): save_game_handle.pick_save_slot(false))
	load_game_button.disabled = not save_game_handle.has_existing_saves()
	settings_button.pressed.connect(settings_popup.show_settings)
	quit_button.pressed.connect(get_tree().quit)
	credits_button.pressed.connect(roll_credits.emit)

	State.take_stage(self)

func _on_save_picked(save: SaveGame):
	start_game.emit(save)