extends Node2D

signal game_success

# inclusive, exclusive
@export var id_range := Vector2i(1, 15)

var available_labels: Array[RichTextLabel] = []
# 0:hide 1:display 2:cleared
var id_state_arr: Array[int] = []
var display_timer := Timer.new()


func _ready() -> void:
	for c in get_children():
		if c is RichTextLabel:
			available_labels.append(c)
			c.modulate.a = 0.0
			c.meta_clicked.connect(_on_meta_clicked.bind(c))
	id_state_arr.resize(id_range.y - id_range.x)
	# 初始化文本
	add_child(display_timer)
	display_timer.wait_time = 1.5
	display_timer.timeout.connect(_display_next)
	# _reset_overtime_tween()


func start_disperse_game() -> void:
	display_timer.start()


# 分配一个 id 到 labels 上
func _display_next() -> void:
	if not available_labels:
		if GlobalConfig.DEBUG:
			print("no available labels")
		return
	var label = available_labels.pop_front()
	var next_id = -1
	for i in range(len(id_state_arr)):
		if id_state_arr[i] == 0:
			next_id = i + id_range.x
			id_state_arr[i] = 1
			break
	if GlobalConfig.DEBUG:
		print("next_id=", next_id)
	if next_id > 0:
		label.id = next_id
		var tween = create_tween()
		tween.tween_property(label, "modulate:a", 1.0, 1.0)


func _on_meta_clicked(meta, label: RichTextLabel):
	var id = int(meta)
	if id_state_arr[id - id_range.x] != 1:
		return
	available_labels.append(label)
	id_state_arr[id - id_range.x] = 2
	var tween = create_tween()
	tween.tween_property(label, "modulate:a", 0.0, 1.0)

	if id_state_arr.all(func(i): return i==2):
		game_success.emit()
		print("game success")

# 	_reset_overtime_tween()

# # 长时间不点击
# var overtime_tween: Tween

# func _reset_overtime_tween() -> void:
# 	if overtime_tween and overtime_tween.is_running():
# 		overtime_tween.kill()
# 	overtime_tween = create_tween()
# 	overtime_tween.tween_interval(2.0)