extends Node

const SAVE_PATH: String = "user://savegame.json"

var save_data: Dictionary = {}
var is_loaded: bool = false

func _ready() -> void:
	load_game()

func save_game() -> void:
	var save_file = FileAccess.open(SAVE_PATH, FileAccess.WRITE)
	var save_nodes = get_tree().get_nodes_in_group("Saveable")
	var new_save_data: Dictionary = {}
	
	for node in save_nodes:
		if not node.has_method("get_save_data"):
			continue
		
		var node_data = node.get_save_data()
		var node_path = str(node.get_path())
		new_save_data[node_path] = node_data

	var json_string = JSON.stringify(new_save_data)
	save_file.store_line(json_string)

func load_game() -> void:
	if not FileAccess.file_exists(SAVE_PATH):
		is_loaded = true
		return
		
	var file = FileAccess.open(SAVE_PATH, FileAccess.READ)
	var json_string = file.get_as_text()
	
	var json = JSON.new()
	var parse_result = json.parse(json_string)
	
	if parse_result == OK:
		save_data = json.data
	
	is_loaded = true