extends SceneTree

var failures := 0

func _initialize() -> void:
	call_deferred("_run")

func _check(ok: bool, detail: String) -> void:
	if not ok:
		failures += 1
		printerr("FAIL: " + detail)

func _run() -> void:
	_check(AssetRoot.pack_ready(), "40250 pack unavailable")
	var driver: Node = preload("res://audio_driver.gd").new()
	root.add_child(driver)
	var sound := "sound/ambience/waterfall.wav"
	var path: String = driver._find_sound(sound)
	_check(path == "pack://" + sound, "sound must resolve through 40250 pack")
	var stream: AudioStream = driver._load_stream(path)
	_check(stream != null, "packed WAV must decode")
	if stream != null:
		driver.set_sound_volume(0.5)
		driver.play_sound_2d(sound, 0.5)
		var player: AudioStreamPlayer = driver._ui_pool[0]
		_check(absf(player.volume_db - linear_to_db(0.5)) < 0.01,
				"sound volume was applied more than once")
		driver.play_sound_3d(sound, Vector3.ZERO, 0.5)
		_check(driver._all_3d.size() == 1, "3D sound not tracked")
		driver.play_sound_3d(sound, Vector3.ZERO, 0.5, 17, 0)
		driver.set_sound_volume_3d(17, 0.25)
		_check(absf(driver._active_3d[17].volume_db - linear_to_db(0.25)) < 0.01,
				"indexed 3D sound volume did not update")
		_check(driver._all_3d.size() == 2, "looping 3D sound not tracked")
		driver._active_3d[17].finished.emit()
		_check(driver._active_3d.has(17), "zero-loop-count ambience did not restart")
		driver.play_sound_3d(sound, Vector3.ZERO, 0.5, 18, 2)
		var twice: AudioStreamPlayer3D = driver._active_3d[18]
		twice.finished.emit()
		_check(driver._active_3d.has(18), "two-play ambience stopped after first play")
		twice.finished.emit()
		_check(not driver._active_3d.has(18), "two-play ambience did not finish")
		driver.stop_sound_3d(17)
		_check(not driver._active_3d.has(17), "StopSound3D left indexed sound running")
		driver.stop_all_sound_3d()
		_check(driver._all_3d.is_empty(), "StopAllSound3D left a player running")
		driver.play_music("login_window.mp3", 0.8)
		_check(driver._music_slot("login_window.mp3") == 0, "PlayMusic did not use slot 0")
		driver.fade_limit_out_music("login_window.mp3", 0.2, 0.1)
		for i in 8:
			driver._update_music_fades()
		_check(absf(driver._bgm_volumes[0] - 0.2) < 0.001,
				"FadeLimitOutMusic did not retain the requested limit")
		driver.fade_limit_out_music("login_window.mp3", 0.7, 0.1)
		driver._update_music_fades()
		_check(absf(driver._bgm_volumes[0] - 0.7) < 0.001,
				"40250 limit fade must clamp immediately when already below the limit")
		driver.fade_limit_out_music("login_window.mp3", 0.2, 0.5)
		driver._update_music_fades()
		driver.fade_out_music("another_track.mp3", 0.1)
		_check(not driver._bgm_fades.has(1), "FadeOutMusic affected an unrelated track")
		driver.fade_out_music("login_window.mp3", 0.1)
		for i in 2:
			driver._update_music_fades()
		_check(not driver._bgm[0].playing, "FadeOutMusic did not stop named track")
		driver.fade_in_music("characterselect.mp3", 0.3, 0.1)
		for i in 3:
			driver._update_music_fades()
		_check(absf(driver._bgm_volumes[0] - 0.3) < 0.001,
				"FadeInMusic did not advance by the requested frame step")
	for player in driver._bgm:
		player.stop()
		player.stream = null
	for player in driver._ui_pool:
		player.stop()
		player.stream = null
	driver._cache.clear()
	driver.free()
	await process_frame
	print("PASS: audio_driver_test" if failures == 0 else "FAIL: audio_driver_test")
	quit(0 if failures == 0 else 1)