extends Node

const names := [
	"user://save_file_1.save",
	"user://save_file_2.save",
	"user://save_file_3.save",
]

var selected_file: String

func _ready() -> void:
	for save_file_name in names:
		ensure_existence(save_file_name)

func ensure_existence(save_file_name: String) -> void:
	if save_file_name in names and not FileAccess.file_exists(save_file_name):
		print("Save file ", save_file_name, " not found, creating it")
		empty(save_file_name)

func empty(save_file_name: String) -> void:
	print("Writing an empty object on ", save_file_name)
	write(JSON.stringify({}), save_file_name)

func read(save_file_name: String) -> Variant:
	print("Reading from save file ", save_file_name)
	ensure_existence(save_file_name)
	selected_file = save_file_name
	
	var save_file := FileAccess.open(save_file_name, FileAccess.READ)
	var json := JSON.new()
	var json_string := save_file.get_line()
	
	if json.parse(json_string) != OK:
		print("(SAVES) JSON Parse Error: ", json.get_error_message(), " in ", json_string, " at line ", json.get_error_line())
		return {}
	
	return json.data

func write(json_string: String, save_file_name: String) -> void:
	var save_file := FileAccess.open(save_file_name, FileAccess.WRITE)
	save_file.store_line(json_string)
	save_file.store_line("FOR YOUR SAFETY, ALWAYS CHECK IF THE DATA OF THE FILES YOU DOWNLOAD LOOKS OKAY")

func change_property(property: String, value, save_file_name: String) -> void:
	print("Changing property '", property, "' on save file ", save_file_name)
	ensure_existence(save_file_name)
	var data = read(save_file_name)
	data[property] = value
	write(JSON.stringify(data), save_file_name)