extends Node

const defaultVolume:float = 0.0;

func _ready():
	StartMenuMusic();

func StartMenuMusic():
	var tween = $Tween;
	if tween.is_active():
		yield (tween, "tween_all_completed")
	var audioPlayer = $Tween / AudioStreamPlayer;
	
	var lowVolume = - 80.0;
	var fadeMusicTime = 2.0;
	

	audioPlayer.volume_db = lowVolume;
	audioPlayer.stream = load("res://resources/audio/bgm/1.ogg");
	
	tween.interpolate_property(audioPlayer, "volume_db", lowVolume, defaultVolume, fadeMusicTime, Tween.TRANS_EXPO, 0)
	audioPlayer.play(0.0);
	tween.start();
	
func StopMenuMusic():
	var tween = $Tween;
	var audioPlayer = $Tween / AudioStreamPlayer;
	
	var lowVolume = - 80.0;
	var fadeMusicTime = 1.0;
	

	
	
	tween.interpolate_property(audioPlayer, "volume_db", defaultVolume, lowVolume, fadeMusicTime, Tween.TRANS_EXPO, 0)
	tween.start();
	yield (tween, "tween_all_completed")
	audioPlayer.stop()
	
func SetBGM(bgmIndex):
	var bgmPath = "res://resources/audio/bgm/" + bgmIndex + ".ogg"
	if bgmIndex == "Survive":
		bgmPath = "res://resources/audio/bgm/Survive.ogg"
	Dialogic.set_variable("CurrentBGM", bgmIndex)
	var bgmStreamPlaying = $TweenBGM.bgmStream.is_playing()
	if bgmPath == "res://resources/audio/bgm/99.ogg":
		$TweenBGM.StopBGM();
	elif bgmStreamPlaying:
		$TweenBGM.ChangeBGM(bgmPath)
	else :
		$TweenBGM.PlayBGM(bgmPath)
	GallerySingleton.AddMusic(bgmIndex);

func SetSFXforBGM(sfxPath):
	var player = $TweenBGMsfx.bgmStream;
	
	if player.stream != null and player.stream.resource_path == sfxPath and not $TweenBGMsfx.isStoping:
		return ;
	
	if player.is_playing():
		$TweenBGMsfx.ChangeBGM(sfxPath)
	else :
		$TweenBGMsfx.PlayBGM(sfxPath)

func SetSFXforBGMNoFade(sfxPath):
	var player = $TweenBGMsfx.bgmStream;
		
	if player.stream != null and player.stream.resource_path == sfxPath and not $TweenBGMsfx.isStoping:
		return ;
		
	if player.is_playing():
		$TweenBGMsfx.ChangeBGMNoFade(sfxPath)
	else :
		$TweenBGMsfx.PlayBGMNoFade(sfxPath)

func StopSFX():
	var sfxStreamPlaying = $TweenBGMsfx.bgmStream.is_playing()
	if (sfxStreamPlaying):
		$TweenBGMsfx.StopBGM()


func SetTriptych(bgmName):
	var bgmPath = "res://resources/audio/bgm/" + bgmName + ".ogg"
	Dialogic.set_variable("CurrentBGM", bgmName)
	var bgmStreamPlaying = $TweenBGM.bgmStream.is_playing()
	
	
	
	if not "tript" in $TweenBGM.bgmStream.stream.resource_path:
		$TweenBGM.PlayBGM(bgmPath)
		return ;
	
	if bgmStreamPlaying:
		$TweenBGM.SetNextTriptych(bgmPath);
	else :
		$TweenBGM.PlayBGM(bgmPath)
	GallerySingleton.AddMusic("29");