extends Node2D
class_name GameControler

func _unhandled_input(event: InputEvent) -> void:
	if event.is_action_pressed("menu"):
		if prev_scene == menu:
			start_game()
		else:
			open_menu()

# list of scenes
var outside:Node2D = null
var dest_outside = preload("res://scenes/outside.tscn")
var bakery:Node2D = null
var dest_bakery = preload("res://scenes/bakery_interior.tscn")
var menu = null
var prev_scene = null

func _ready() -> void:
	GameState._game = self
	menu = get_child(0)
	prev_scene = menu

func start_game():
	switch_to(GameState.current_scene)
				
func switch_to(to: String):
	call_deferred("switch_scene", to)

var next_scene = null
var toMenu = false;
var switching_to

func switch_scene(to: String):
	switching_to= to
	print("switching to", switching_to)
	toMenu = to == "menu"
	match to:
		"outside":
			if outside == null:
				outside = dest_outside.instantiate()
			next_scene = outside
		"bakery":
			if bakery == null:
				bakery = dest_bakery.instantiate()
			next_scene = bakery
		"menu":
			next_scene = menu
	$TransitionShader.fade_out()

func init_scence(scene):
	scene.load_from_game_state()
	$TransitionShader.fade_in()

func open_menu():
	switch_scene("menu")
	
func load_game():
	var save_file = FileAccess.open("user://savegame.save", FileAccess.READ)
	var json_string = ""
	while save_file.get_position() < save_file.get_length():
		json_string += save_file.get_line()
	var json = JSON.new()
	if json.parse(json_string) == OK:
		print("load", json.data)
		GameState.load_save(json.data)

func save_game():
	var save_file = FileAccess.open("user://savegame.save", FileAccess.WRITE)
	save_file.store_line(JSON.stringify(GameState.save(), "  ", true, true))
	print(OS.get_data_dir())
	save_file.close()

func _on_transition_shader_fade_in_done() -> void:
	if !toMenu:
		GameState.current_scene = switching_to

func _on_transition_shader_fade_out_done() -> void:
	print("fade out done")
	if !toMenu:
		next_scene.unload()
	call_deferred("add_child", next_scene)
	call_deferred("remove_child", prev_scene)
	if !toMenu:
		call_deferred("init_scence", next_scene)
	else:
		$TransitionShader.fade_in()
	prev_scene = next_scene