extends Node3D

# The player name.
var player_name: String
var connected:bool = false
var enet:ENetConnection
var dataEnet:ENetPacketPeer 
var errorEnet:Error
var id = 0
var maxplayer = 0
var listen_ip:String
var listen_port:int

# Server confirm our account
var account_confirmed:bool = false

const PLAYER = preload("res://scenes/player.tscn")

var dtls := PacketPeerDTLS.new()
var udp := PacketPeerUDP.new()


func create_server_enet():
	print("------ create_server_enet")
	errorEnet = enet.create_host(10)
	if errorEnet != OK:
		print("ERROR ENET.create_host: ", errorEnet)
		return


func connect_to_host():
	print("Connect to : " + listen_ip + " : " + str(listen_port))
	dataEnet = enet.connect_to_host(listen_ip, listen_port, 10)
	print(dataEnet)
	if not dataEnet.is_active():
		print("ERROR enet.connect_to_host: ", dataEnet.is_active())
		return


func _ready():
	enet = ENetConnection.new()
	create_server_enet()


func decode_msg(data:PackedByteArray):
	print("==========================")
	var cmd = data.decode_u8(0)
	print("cmd:", cmd)
	var taille = data.decode_u8(1)
	print("taille:", taille)
	var str:String = ""
	var tmp = data.slice(2,taille+2)
	print("tmp:", tmp)

	str = tmp.get_string_from_utf8()

	print("str:", str)
	print("len str:", len(str))
	
	print("==========================")


func send_account():
	var data:PackedByteArray = PackedByteArray()
	
	data.append(1)
	data.append(len(player_name))
	var packed_array = player_name.to_ascii_buffer()
	data += packed_array

	print(player_name, " -> size:", data.size(), " / " , len(player_name) )
	errorEnet = dataEnet.send(1, data, 1)
	if errorEnet != OK:
		print("ERROR ENET: ", errorEnet)
		return


func set_player_position(pos: Vector3):
	self.get_node("CharacterBody3D").set_global_position(pos)


func get_player_position():
	if not account_confirmed:
		return
	#print("perso: ", id, " ", self.get_node("CharacterBody3D").get_position())
	var pos:PackedFloat64Array = PackedFloat64Array()
	var posRaw:Vector3 = self.get_node("CharacterBody3D").get_position()
	#posRaw.x = 123456789182729270e15
	#posRaw.y = 2.0
	#posRaw.z = 3.0
	pos.append(posRaw.x)
	#print("x:", pos.to_byte_array())
	pos.append(posRaw.y)
	#print("x+y:", pos.to_byte_array())
	pos.append(posRaw.z)
	#print("x+y+z:", pos.to_byte_array())
	var data:PackedByteArray = PackedByteArray()
	data += pos.to_byte_array()
	#data.append(len(player_name))
	#var packed_array = player_name.to_ascii_buffer()
	#data += packed_array
	#print(player_name, " -> size:", data.size(), " / " , len(player_name) )
	errorEnet = dataEnet.send(2, data, 1)
	if errorEnet == ERR_UNCONFIGURED:
		connect_to_host()
	elif errorEnet != OK:
		print("ERROR ENET: ", errorEnet)
		return


func bad_acocunt():
	player_name = ""
	self.get_node("Window").open_windows()


func get_event_received():
	var data = dataEnet.get_packet()
	#print("get: ", data)
	if data[0] == 1: # Return connexion
		if data[1] == 0: # OK
			id = data.decode_u64(2)
			var x = data.decode_double(2+8)
			var y = data.decode_double(2+16)
			var z = data.decode_double(2+24)
			# print("id:", id, " x:", x, " y:", y, " z:", z)
			self.set_player_position(Vector3(x, y, z))
			account_confirmed = true
			self.get_node("CharacterBody3D").set_enable_event(true)
		else: # KO
			bad_acocunt()
	elif data[0] == 3: # Get position
		if id == 0:
			return
		var nb = data[1]
		var pos = 2
		for i in nb:
			var mid = data.decode_u64(pos)
			var mx = data.decode_double(pos+8)
			var my = data.decode_double(pos+16)
			var mz = data.decode_double(pos+24)
			pos += 32
			if mid == id:
				#print("Me id:", mid, " x:", mx, " y:", my, " z:", mz)
				continue
			#print("-- id:", mid, " x:", mx, " y:", my, " z:", mz)
			var child = $Players.find_child(str(mid), false, false)
			if child == null:
				print("Add player : ", mid)
				if maxplayer > 3:
					continue
				var scene = preload("res://scenes/player.tscn")
				var instance = scene.instantiate()
				#var current_scene = scene.instance()
				#var GrabbedInstance = PLAYER.instance()
				instance.set_name(str(mid))
				$Players.add_child(instance)
				#$Players.add_child(scene)
				maxplayer += 1
				var child2 = $Players.find_child(str(mid), false, false)
				child2.set_global_position(Vector3(mx, my, mz))
			else:
				child.set_global_position(Vector3(mx, my, mz))
				#print("Found:", $Players.get_child_count())
		var nbuserremove = data[pos]
		pos += 1
		for i in nbuserremove:
			var mid = data.decode_u64(pos)
			pos += 8
			if mid == id:
				print("Try to remove me :", mid)
				continue
			#print("Remove player : ", mid)
			var child = $Players.find_child(str(mid), false, false)
			if child != null:
				print("Remove player : ", mid)
				$Players.get_node(str(mid)).queue_free()


# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(_delta):
	if not dataEnet:
		return
	#print("state:", dataEnet.get_state())
	get_player_position()
	if dataEnet.get_state() == ENetPacketPeer.STATE_CONNECTED:
		var event = enet.service()
		if event[0] == ENetConnection.EVENT_RECEIVE:
			#print("get: ", dataEnet.get_packet())
			get_event_received()
		if player_name != "" and not account_confirmed:
			send_account()
	elif dataEnet.get_state() == ENetPacketPeer.STATE_CONNECTING:
		var event = enet.service()
		if event[0] == ENetConnection.EVENT_RECEIVE:
			pass
	elif dataEnet.get_state() ==  ENetPacketPeer.STATE_DISCONNECTED:
		var _event = enet.service()
		print("STATE_DISCONNECTED")
	elif dataEnet.get_state() ==  ENetPacketPeer.STATE_ACKNOWLEDGING_CONNECT:
		var _event = enet.service()
		print("STATE_ACKNOWLEDGING_CONNECT")
	elif dataEnet.get_state() ==  ENetPacketPeer.STATE_CONNECTION_PENDING:
		var _event = enet.service()
		print("STATE_CONNECTION_PENDING")
	elif dataEnet.get_state() ==  ENetPacketPeer.STATE_CONNECTION_SUCCEEDED:
		var _event = enet.service()
		print("STATE_CONNECTION_SUCCEEDED")
	elif dataEnet.get_state() ==  ENetPacketPeer.STATE_DISCONNECT_LATER:
		var _event = enet.service()
		print("STATE_DISCONNECT_LATER")
	elif dataEnet.get_state() ==  ENetPacketPeer.STATE_DISCONNECTING:
		var _event = enet.service()
		print("STATE_DISCONNECTING")
	elif dataEnet.get_state() ==  ENetPacketPeer.STATE_ACKNOWLEDGING_DISCONNECT:
		var _event = enet.service()
		print("STATE_ACKNOWLEDGING_DISCONNECT")
	elif dataEnet.get_state() ==  ENetPacketPeer.STATE_ZOMBIE:
		var _event = enet.service()
		print("STATE_ZOMBIE")
	else:
		var _event = enet.service()


func connect_enet(_name:String, _listen_ip:String, _listen_port:int):
	player_name = _name
	listen_ip = _listen_ip
	listen_port = _listen_port
	connect_to_host()
	print("My name:" + player_name)