extends Control


@onready var music_player:AudioStreamPlayer = $Music
var official_music:Dictionary = {}
var default_domain:String = "Les Chemins du Khanat"
var current_domain:String = ""
var current_music:int = 0
var music_play:bool = false
var select_rand:bool = true
var list_music:Array = []


func _ready() -> void:
	var directory:Directory = Directory.new()
	var files = []
	get_tree().paused = false
	Common.msg_info("Load MusicManager")
	if not directory.dir_exists( "res://music/" ):
		Common.msg_info("No Music")
		return
	directory.open( "res://music/" )
	for dir in directory.get_directories():
		var dir2:Directory = Directory.new()
		var fullpath: String = "res://music/" + dir
		dir2.open( fullpath )
#		Common.msg_debug("Dir: " + str(dir))
		for file in dir2.get_files():
			if file == "":
				break
			elif not file.begins_with(".") and not dir2.current_is_dir() and (file.ends_with( ".ogg" ) or file.ends_with( ".mp3" )):
				if ! official_music.has(dir):
					official_music[dir] = []
				official_music[dir].append(fullpath + "/" + file)
				files.append(file)
	#music_player.finished.connect(_on_stream_finished.bind())
	_on_random_pressed()
	select_domain( default_domain )
	current_music = official_music[current_domain].size()
	
	# Get Mute state
	Common.msg_debug("mute:" + str(user_settings.get_sound_mute()))
	AudioServer.set_bus_mute(AudioServer.get_bus_index($Music.get_bus()), user_settings.get_sound_mute())
	$Window/VBox/HBoxContainer/Mute.set_pressed(user_settings.get_sound_mute())

	$Window/VBox/Tab/Music/HBox/Play.set_pressed(user_settings.get_sound_music_play())
	$Window/VBox/Tab/Music/HBox/Random.set_pressed(user_settings.get_sound_music_random())
	# Get Volume 
#	Common.msg_debug("volume :" + str($Music.get_volume_db()))
#	var t = linear2db(0.0)
#	var u = db2linear($Music.get_volume_db())
#	Common.msg_debug("volume :" + str(u))
	var music_volume = user_settings.get_sound_music_volume()
	$Music.set_volume_db(linear2db(music_volume/100.0))
	$Window/VBox/Tab/Mixer/MusicLevel/music.set_value( int(db2linear($Music.get_volume_db()) * 100))
	$Window/VBox/Tab/Mixer/MusicLevel/Value.set_text(str(int(db2linear($Music.get_volume_db()) * 100)))
	var bus_name = $Music.get_bus()
	Common.msg_debug("bus_name: " + str(bus_name))
	var bus_id = AudioServer.get_bus_index(bus_name)
	Common.msg_debug("bus_id: " + str(bus_id))
	var glb_volume = AudioServer.get_bus_volume_db(bus_id)
	Common.msg_debug("GLB Volume: " + str(glb_volume))
	
	var global_volume = user_settings.get_sound_global_volume()
	AudioServer.set_bus_volume_db(AudioServer.get_bus_index($Music.get_bus()), linear2db(global_volume/100.0))
	# AudioServer.get_bus_volume_db(AudioServer.get_bus_index($Music.get_bus()))
	$Window/VBox/Tab/Mixer/GlobalLevel/global.set_value( int(db2linear(AudioServer.get_bus_volume_db(AudioServer.get_bus_index($Music.get_bus()))) * 100.0))
	$Window/VBox/Tab/Mixer/GlobalLevel/Value.set_text(str(int(db2linear(AudioServer.get_bus_volume_db(AudioServer.get_bus_index($Music.get_bus()))) * 100.0)))


func select_domain(new_domain:String) -> void:
	var found:bool = false
	for key in official_music.keys():
		if new_domain == key:
			found = true
	if found == false:
		return
	current_domain = new_domain
	reinitialize_jukebox()


func reinitialize_jukebox() -> void:
	list_music.clear()
	if select_rand:
		var temp:Array
		for i in range(0, official_music[current_domain].size()):
			temp.append(i)
		for i in range(0, official_music[current_domain].size()):
			var pos = randi() % temp.size()
			list_music.append(temp[pos])
			temp.remove_at(pos)
	else:
		for i in range(0, official_music[current_domain].size()):
			list_music.append(i)


func next_music() -> void:
	var pos:float
	current_music += 1
	if current_music >= list_music.size():
		reinitialize_jukebox()
		play_music(0)
		return
	play_music(current_music)


func load_external_music(filepath):
	var stream = null
	Common.msg_debug("load_external_music")
	var file = File.new()
	file.open(filepath, file.READ)
	var ext = filepath.split(".")[-1].to_lower()
	var buffer = file.get_buffer(file.get_len())
	Common.msg_debug(ext)
	match ext:
		"ogg":
			stream =  AudioStreamOggVorbis.new()
		"mp3":
			stream = AudioStreamMP3.new()
		#"wav":
		#	# We need decode message to get format (Stero/size bit/ ...)
		#	stream = AudioStreamSample.new()
		#	stream.format = AudioStreamSample.FORMAT_16_BITS
		#	#stream.stereo = true
		_:
			Common.msg_error("Impossible to identify type of file (file:" + filepath + ", ext:" + ext + ")")
			return
	stream.data = buffer
	Common.msg_debug("load_external_music : End")
	return stream


func load_music(filepath: String):
	if filepath.left(5) == "res:/":
		return load( filepath )
	return load_external_music(filepath)


func _on_stream_finished() -> void:
	Common.msg_debug("_on_stream_finished")
	music_player.stop()
	music_play = false


func show_list_music() -> void:
	for child in $Window/VBox/Tab/Music/ScrollContainer/ListMusic.get_children():
		child.queue_free()
	for pos in range(0, list_music.size()):
		var filename:String = official_music[current_domain][list_music[pos]]
		var music_box = preload( "res://scenes/music/music_field.tscn" ).instantiate()
		music_box.set_music( filename, filename.get_file().get_basename() , pos, pos == current_music)
		music_box.connect("selected_music", force_music.bind())
		$Window/VBox/Tab/Music/ScrollContainer/ListMusic.add_child( music_box )


func force_music(pos:int) -> void:
	Common.msg_debug("Force: " + str(pos))
	play_music(pos)


func play_music(pos: int) -> void:
	if pos >= list_music.size():
		return
	var filename:String = official_music[current_domain][list_music[pos]]
	music_play = true
	music_player.set_stream(load_music( filename ))
	music_player.play()
	music_player.get_stream().set_loop(false)
	var timer = music_player.get_stream().get_length()
	$EndMusic.start(timer)
	music_player.connect("finished", _on_stream_finished.bind())
	current_music = pos
	show_list_music()


func _process(delta) -> void:
	if ! music_play and $Window/VBox/Tab/Music/HBox/Play.is_pressed():
		next_music()


func _on_music_finished() -> void:
	Common.msg_debug("_on_music_finished")
	music_player.stop()
	music_play = false


func _on_end_music_timeout() -> void:
	# Timer end - sometimes, signal finished is not sent
	Common.msg_debug("_on_end_music_timeout")
	music_play = false


func show_config() -> void:
	#$Window.popup_centered()
	$Window.visible = true


func _on_button_pressed() -> void:
	$Window.hide()


func _on_play_pressed() -> void:
	var current_time = $EndMusic.get_time_left()
	Common.msg_debug("_on_play_pressed : " + str(current_time))
	if $Window/VBox/Tab/Music/HBox/Play.is_pressed():
		$Music.set_stream_paused(false)
		$EndMusic.set_paused(false)
		user_settings.set_sound_music_play(true)
	else:
		$Music.set_stream_paused(true)
		$EndMusic.set_paused(true)
		user_settings.set_sound_music_play(false)


func _on_random_pressed() -> void:
	if $Window/VBox/Tab/Music/HBox/Random.is_pressed():
		select_rand = true
		user_settings.set_sound_music_random(true)
	else:
		select_rand = false
		user_settings.set_sound_music_random(false)


func _on_reinit_pressed() -> void:
	reinitialize_jukebox()
	play_music(0)


func _on_mute_toggled(button_pressed) -> void:
	AudioServer.set_bus_mute(AudioServer.get_bus_index($Music.get_bus()), button_pressed)
	user_settings.set_sound_mute(button_pressed)


func _on_effect_value_changed(value) -> void:
	$Window/VBox/Tab/Mixer/EffectLevel/Value.set_text(str(value))


func _on_music_value_changed(value) -> void:
	$Music.set_volume_db(linear2db(value/100.0))
	$Window/VBox/Tab/Mixer/MusicLevel/Value.set_text(str(value))
	user_settings.set_sound_music_volume(value)

func _on_global_value_changed(value) -> void:
	AudioServer.set_bus_volume_db(AudioServer.get_bus_index($Music.get_bus()), linear2db(value/100.0))
	$Window/VBox/Tab/Mixer/GlobalLevel/Value.set_text(str(value))
	user_settings.set_sound_global_volume(value)


func _on_window_close_requested() -> void:
	$Window.hide()