extends Node

const PORT = 8080
var _server = WebSocketServer.new()
var IDs = {}
var peers = []

func _ready():
	_server.connect('client_connected', self, "_connected")
	_server.connect('client_disconnected', self, "_disconnected")
	_server.connect('client_close_request', self, "_close_request")
	_server.connect("data_received", self, "_on_data_received")
	
	var err = _server.listen(PORT)
	if err != OK:
		print_debug("Unable to start server")
		set_process(false)
	print_debug("server started")
	
func _connected(id, protocol):
	print_debug("Client %d connected with protocol: %s" % [id, protocol])
	_server.get_peer(id).put_packet(JSON.print(
		{'type': 'test', 'message': "Server test packet"}).to_utf8()
	)
	peers.append(id)
	
func _close_request(id, code, reason):
	print_debug("Client %d disconnecting with code: %d, reason: %s" 
		% [id, code, reason])
	
func _disconnected(id, was_clean = false):
	print_debug("Client %d disconnected, clean: %s" 
		% [id, str(was_clean)])
	var user = IDs[id]
	peers.erase(id)
	for p in peers:
		_server.get_peer(p).put_packet(JSON.print(
			{'type': "server_message", "message": user 
				+ "(#" + str(id) + ") left the chat."}
		).to_utf8())
	
func _on_data_received(id):
	
	var original = _server.get_peer(id).get_packet().get_string_from_utf8()
	var json = JSON.parse(original)
	var packet = json.result
	if typeof(packet) != 18:
		push_error("%s is not a dictionary" % [packet])
		get_tree().quit()
	
	print_debug("Got data from client %d: %s ... echoing" % [id, packet])
	if packet['type'] == "user_joined": 
		IDs[id] = packet['name']
		for p in peers:
			_server.get_peer(p).put_packet(
				JSON.print(
					{'type': "server_message", "message": packet['name'] 
						+ "(#" + str(id) + ") joined the chat."}
					).to_utf8())
	elif packet['type'] == "chat_message" or packet['type'] == "server_message":
		for p in peers:
			_server.get_peer(p).put_packet(JSON.print(packet).to_utf8())
	
func _process(_delta):
	_server.poll()