extends Node

@export var sample_limit := 20

var _samples := 0


func _ready() -> void:
	set_process_input(true)
	var rhythm := _rhythm_manager()
	if rhythm != null and rhythm.has_method("start"):
		rhythm.call("start")


func _input(event: InputEvent) -> void:
	var key := event as InputEventKey
	if key == null or not key.pressed or key.echo:
		return
	_print_clock_sample(Time.get_ticks_msec())


func _print_clock_sample(timestamp_ms: float) -> void:
	var rhythm := _rhythm_manager()
	if rhythm == null:
		push_warning("ClockDebug requires the RhythmManager autoload.")
		return

	var song_time := float(rhythm.call("input_to_song_time", timestamp_ms))
	var rating: Dictionary = rhythm.call("get_rating_for_time", song_time)
	var nearest_beat := int(rating.get("nearest_beat", -1))
	var diff_ms := float(rating.get("diff", 0.0)) * 1000.0
	_samples += 1
	print("clock_debug sample=%d song_time=%.3f beat=%d diff_ms=%.2f" % [_samples, song_time, nearest_beat, diff_ms])

	if sample_limit > 0 and _samples >= sample_limit:
		print("clock_debug sample limit reached")


func _rhythm_manager() -> Node:
	return get_node_or_null("/root/RhythmManager")