extends Node

class_name DataHandler

var data_file_path = "res://data_list.json"
var app_data: AppData

func _ready():
	# Load the data when the scene is ready
	app_data = load_data()

func load_data() -> AppData:
	var file = FileAccess.open(data_file_path, FileAccess.READ)
	if file:
		var json_data = file.get_as_text()
		file.close()
		var json = JSON.new()
		var parsed_data = json.parse_string(json_data)
		#if parsed_data.error == OK:
		if parsed_data:
			var data_dict = parsed_data

			var about_links = {}
			for key in data_dict["about_links"].keys():
				var link_data = data_dict["about_links"][key]
				var link = Link.new()
				link.name = link_data["name"]
				link.url = link_data["url"]
				link.description = link_data["description"]
				about_links[key] = link

			var emulators = {}
			for key in data_dict["emulators"].keys():
				var emulator_data = data_dict["emulators"][key]
				var emulator = Emulator.new()
				emulator.name = emulator_data["name"]
				emulator.description = emulator_data["description"]

				#emulator.options = []
				#emulator.properties = []
				for option_data in emulator_data["options"]:
					var option = EmulatorOption.new()
					option.resettable = option_data["resettable"]
					emulator.options.append(option)

				
				for property_data in emulator_data["properties"]:
					var property = EmulatorProperty.new()
					property.standalone = property_data.get("standalone", false)
					property.abxy_button_status = property_data.get("abxy_button", {}).get("status", false)
					emulator.properties.append(property)

				emulators[key] = emulator

			var app_data = AppData.new()
			app_data.about_links = about_links
			app_data.emulators = emulators

			return app_data
		else:
			print("Error parsing JSON")
	else:
		print("Error opening file")
	return null

func save_data(app_data: AppData):
	var file = FileAccess.open(data_file_path, FileAccess.READ)
	var existing_data = {}
	if file:
		var json = JSON.new()
		var error = json.parse(file.get_as_text())
		if error == OK:
			existing_data = json.get_data()
		file.close()
	else:
		print("File not found. Creating a new one.")		
		var about_links = {}
		for key in app_data.about_links.keys():
			var link = app_data.about_links[key]
			about_links[key] = {
				"name": link.name,
				"url": link.url,
				"description": link.description
			}
		
	var new_data_dict = {}
	# Convert about_links to a dictionary
	var about_links = {}
	for key in app_data.about_links.keys():
		var link = app_data.about_links[key]
		about_links[key] = {
			"name": link.name,
			"url": link.url,
			"description": link.description
	}

	# Convert emulators to a dictionary
	var emulators = {}
	for key in app_data.emulators.keys():
		var emulator = app_data.emulators[key]
		var options = []
		for option in emulator.options:
			options.append({
				"resettable": option.resettable
		})

		var properties = []
		for property in emulator.properties:
			properties.append({
				"standalone": property.standalone,
				"abxy_button": {"status": property.abxy_button_status}
		})

		emulators[key] = {
			"name": emulator.name,
			"description": emulator.description,
			"options": options,
			"properties": properties
		}

	new_data_dict["about_links"] = about_links
	new_data_dict["emulators"] = emulators

	# Merge existing data with new data
	for key in new_data_dict.keys():
		if existing_data.has(key):
			var existing_dict = existing_data[key]
			var new_dict = new_data_dict[key]

			# Merge dictionaries
			for sub_key in new_dict.keys():
				existing_dict[sub_key] = new_dict[sub_key]
		else:
			existing_data[key] = new_data_dict[key]

	# Serialize the combined data to JSON
	var json_text = JSON.new().stringify(existing_data, "\t")

	# Open the file in append mode and write the new JSON data
	file = FileAccess.open(data_file_path, FileAccess.WRITE)
	file.store_string(json_text)
	file.close()
	print("Data appended successfully")
# Function to modify an existing link
func modify_link(key: String, new_name: String, new_url: String, new_description: String):
	var app_data = load_data()
	if app_data and app_data.about_links.has(key):
		var link = app_data.about_links[key]
		link.name = new_name
		link.url = new_url
		link.description = new_description
		app_data.about_links[key] = link
		save_data(app_data)
		print("Link modified successfully")
	else:
		print("Link not found")

# Function to modify an existing emulator
func modify_emulator(key: String, new_name: String, new_description: String, new_options: Array, new_properties: Array):
	var app_data = load_data()
	if app_data and app_data.emulators.has(key):
		var emulator = app_data.emulators[key]
		emulator.name = new_name
		emulator.description = new_description
		
		# Update options
		emulator.options.clear()
		for option in new_options:
			var new_option = EmulatorOption.new()
			new_option.resettable = option.resettable
			emulator.options.append(new_option)

		# Update properties
		emulator.properties.clear()
		for property in new_properties:
			var new_property = EmulatorProperty.new()
			new_property.standalone = property.standalone
			new_property.abxy_button_status = property.abxy_button_status
			emulator.properties.append(new_property)

		app_data.emulators[key] = emulator
		save_data(app_data)
		print("Emulator modified successfully")
	else:
		print("Emulator not found")