Making a Discord Bot with Godot (Part One)

extends HTTPRequest

var token := "yourtokenhere" #make sure to actually replace this with your token!
var client : WebSocketClient
var heartbeat_interval : float
var last_sequence : float

func _ready() -> void:
	client = WebSocketClient.new()
	client.connect_to_url("wss://gateway.discord.gg/?v=6&encoding=json")
	client.connect("connection_established", self, "_connection_established")
	client.connect("data_received", self, "_data_received")

func _process(delta : float) -> void:
	#check if the client is not disconnected, there's no point to poll it if it is
	if client.get_connection_status() != NetworkedMultiplayerPeer.CONNECTION_DISCONNECTED:
		client.poll()

func _connection_established(protocol : String) -> void:
	print("We are connected!")

func _data_received() -> void:
	var packet := client.get_peer(1).get_packet()
	var data := packet.get_string_from_utf8()
	var json_parsed := JSON.parse(data)
	var dict : Dictionary = json_parsed.result
	var op = str(dict["op"]) #convert it to string for easier checking

	match op:
		"0": #Opcode 0 (Events)
			print(dict["t"])
			last_sequence = dict["s"]
		"10": #Opcode 10 Hello
			#Set our timer
			heartbeat_interval = dict["d"]["heartbeat_interval"]
			$Timer.wait_time = heartbeat_interval / 1000
			$Timer.start()
			#Send Opcode 2 Identify to the Gateway
			var d = {
				"op" : 2,
				"d" : { "token": token, "properties": {} }
			}
			send_dictionary_as_packet(d)
		"11": #Opcode 11 Heartbeat ACK
			print("We've received a Heartbeat ACK from the gateway.")


func _on_Timer_timeout() -> void: #Send Opcode 1 Heartbeat payloads every heartbeat_interval
	var d = {"op" : 1, "d" : last_sequence}
	send_dictionary_as_packet(d)
	print("We've send a Heartbeat to the gateway.")

func send_dictionary_as_packet(d : Dictionary) -> void:
	var query = to_json(d)
	client.get_peer(1).put_packet(query.to_utf8())