extends Node

const endpoints = {}
const subscriber = {}

static func subscribe(event_key : String, listener : Node, callback : String)->void:
	if endpoints.has(event_key):
		for publisher in endpoints[event_key]:
			publisher["pub"].connect(publisher["sig"], listener, callback)
			print("subsribing to ", event_key)
	if not subscriber.has(event_key):
		subscriber[event_key] = []
	subscriber[event_key].append({"lis": listener, "cb": callback})
	
static func publish(event_key : String, payload):
	if endpoints.has(event_key):
		endpoints[event_key][0]["pub"].emit_signal(endpoints[event_key][0]["sig"], payload)
	else:
		print("no publisher to emit ", event_key, " with ", payload)
			
	
static func registerPublisher(event_key : String, publisher : Node, Signal : String)->void:
	if not endpoints.has(event_key):
		endpoints[event_key] = []
	endpoints[event_key].append({"pub": publisher, "sig": Signal})
	if subscriber.has(event_key):
		for sub in subscriber[event_key]:
			publisher.connect(Signal, sub["lis"], sub["cb"])
	print("added publisher for ", event_key, ":", endpoints[event_key])
	
static func clear()->void:
	"""
	Clears all Publishers
	"""
	endpoints.clear()
	subscriber.clear()