extends CanvasLayer

@onready var bg = $BG as TextureRect

var mahjongs = {
	"三条1": preload("uid://b2ectbek7vksi"),
	"三条2": preload("uid://ca5j182ppemi3"),
	"三条3": preload("uid://cd6d3xjx5o6gg"),
	"三条4": preload("uid://bl20arldcd04c"),
	"三条5": preload("uid://dtkl36brvsget"),
	"三筒": preload("uid://b2pypf81rgqkw"),
	"九筒1": preload("uid://dis6qtf1hvop2"),
	"九筒2": preload("uid://2chok0puqbuu"),
	"二筒": preload("uid://doxc87cp3e8i4"),
	"伍万1": preload("uid://bo4hrg3sqpoou"),
	"伍万2": preload("uid://e86x6j8wu7sw"),
	"伍万3": preload("uid://q4vs78ohnnhw"),
	"一条": preload("uid://dduhqah1p81tb"),
	"一筒": preload("uid://dwyk0e1c2eg37")
}

@onready var box_init_btn = %"0"
@onready var box_mahjongs_btn: Array[TextureButton] = [%"1", %"2", %"3", %"4", %"5", %"6", %"7", %"8", %"9", %"10", %"11"]
@onready var hand_mahjongs_btn: Array[TextureButton] = [%"12", %"13", %"14"]
@onready var hand_mahjongs = []
@onready var box_mahjongs = []

var freezing = true
var success = false

func _ready() -> void:
	layer = GlobalConfig.CANVAS_LAYER_LITTLE_GAME
	box_init_btn.pressed.connect(_start_game)
	box_init_btn.mouse_entered.connect(_toggle_activation_modulate.bind(box_init_btn, true))
	box_init_btn.mouse_exited.connect(_toggle_activation_modulate.bind(box_init_btn, false))
	for b in box_mahjongs_btn:
		b.mouse_entered.connect(_toggel_hover.bind(b, true))
		b.mouse_exited.connect(_toggel_hover.bind(b, false))
		b.pressed.connect(_on_btn_pressed.bind(b))
	for b in hand_mahjongs_btn:
		b.mouse_entered.connect(_toggel_hover.bind(b, true))
		b.mouse_exited.connect(_toggel_hover.bind(b, false))
		b.pressed.connect(_on_btn_pressed.bind(b))
	_toggle_activation_for_all(false)
	

func _start_game() -> void:
	$SfxStart.play()
	%"14".visible = true
	box_init_btn.queue_free()
	freezing = false


func _toggel_hover(btn: TextureButton, hovering: bool) -> void:
	if freezing:
		return
	if activated_btn and btn == activated_btn:
		return
	_toggle_activation_modulate(btn, hovering)


var activated_btn: TextureButton

func _on_btn_pressed(btn: TextureButton) -> void:
	if freezing:
		return
	if btn != activated_btn:
		if activated_btn:
			_exchange_texture(btn, activated_btn)
			_toggle_activation_modulate(btn, false)
			_toggle_activation_modulate(activated_btn, false)
			activated_btn = null
		else:
			$SfxSelect.play()
			_toggle_activation_modulate(btn, true)
			activated_btn = btn
	else:
		$SfxSelect.play()
		_toggle_activation_modulate(btn, false)
		activated_btn = null
	_check_if_success()


func _exchange_texture(btn1: TextureButton, btn2: TextureButton) -> void:
	if btn1 and btn2:
		$SfxSwitch.play()		
		var texture = btn1.texture_normal
		btn1.texture_normal = btn2.texture_normal
		btn2.texture_normal = texture


func _toggle_activation_modulate(btn: TextureButton, activated: bool) -> void:
	if null == btn:
		return
	if activated:
		btn.modulate = Color.WHITE
	else:
		btn.modulate = Color.GRAY


func _toggle_activation_for_all(activated: bool) -> void:
	if box_init_btn:
		_toggle_activation_modulate(box_init_btn, activated)
	for b in box_mahjongs_btn:
		_toggle_activation_modulate(b, activated)
	for b in hand_mahjongs_btn:
		_toggle_activation_modulate(b, activated)


func _check_if_success() -> void:
	if success:
		$SfxSuccess.play()
		freezing = true