@tool
class_name Portal2D extends Sprite2D

signal before_pre_transport_wait
signal sign_mark_offset_updated

# sign_mark 节点在 ready 时会直接读取
@export var sign_mark_offset := Vector2.ZERO:
	set(val):
		sign_mark_offset = val
		sign_mark_offset_updated.emit(val)
@export_multiline var debug_note: String = ""
@export var enabled := true:
	set(val):
		enabled = val
		_check_sign_mark_and_texture()
@export var immediately := false
@export_enum("left", "right", "1", "2", "3", "4", "5", "6", "7", "8", "9") var portal_name := "left":
	set(value):
		#if portal_name:
		#remove_from_group("portal_"+portal_name)
		portal_name = value
		#add_to_group("portal_"+value)
		name = "portal_" + value
@export var target_scene := "c02_s00"
@export_enum("none", "left", "right", "1", "2", "3", "4", "5", "6", "7", "8", "9")
var target_portal := "none":
	set(value):
		target_portal = value
		_check_sign_mark_and_texture()
@export_enum("default", "locked", "opened") var status := "default":
	set(value):
		status = value
		# 只在编辑器模式下检查
		if is_node_ready() and Engine.is_editor_hint():
			_check_sign_mark_and_texture()
@export var pre_transport_wait_time := 0.0
# holding 意味着当前门禁用，不可传送，需要先完成某些条件
@export var holding := false
@export var holding_reason_key := ""
@export var default_texture: Texture2D
@export var opened_texture: Texture2D
@export var unrevealed_sign_texture: Texture2D
@export var default_sign_texture: Texture2D
@export var opened_sign_texture: Texture2D
@export var matched_sign_texture: Texture2D
@export var locked_sign_texture: Texture2D

var prop_key := ""
@export var disable_key_after_used := true

# 穿过通道的音效
@onready var sfx_default = %SfxDefault as Sfx
# 开锁的音效
@onready var sfx_open = %SfxOpen as Sfx
# 进门的音效
@onready var sfx_enter = %SfxEnter as Sfx
# 门被锁定，无法打开的音效
@onready var sfx_locked = %SfxLocked as Sfx
@onready var sign_mark = %Sign as Sign
@onready var area2d = %Area2D as Area2D

var activated := false

static var item_config_res = preload("res://asset/dialogue/item_description.dialogue")
var items: PackedStringArray

var ground_archive: GroundArchive

# 尝试互动的次数
var tried_times: int:
	set(val):
		tried_times = val
		ground_archive.set_pair(name, "tried_times", val)

# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	name = "portal_" + portal_name
	if Engine.is_editor_hint():
		_check_sign_mark_and_texture()
		_reload_items()
		return
	ground_archive = ArchiveManager.archive.ground_archive()
	tried_times = ground_archive.get_value(name, "tried_times", 0)
	status = ground_archive.get_value(name, "status", status)
	if GlobalConfig.DEBUG:
		print("Portal read status [", name, "] status=", status)
	_check_sign_mark_and_texture()
	area2d.body_entered.connect(_reset)
	area2d.body_exited.connect(_on_cancel)
	sign_mark.interacted.connect(_on_interacted)
	sign_mark.cancel.connect(_on_cancel)


func _reload_items() -> void:
	items.clear()
	var id = item_config_res.titles["PropItems"]
	var current_line = item_config_res.lines[id]
	while current_line:
		if current_line.has("translation_key"):
			items.append(current_line.translation_key)
		if not current_line.has("next_id") or current_line.next_id == "end":
			break
		current_line = item_config_res.lines[current_line.next_id]
	notify_property_list_changed()


func _check_sign_mark_and_texture():
	if not is_node_ready():
		return
	if status == "opened" and opened_texture:
		texture = opened_texture
	elif default_texture:
		texture = default_texture
	if status == "default":
		sign_mark.sprite2d.texture = default_sign_texture
	else:
		# holding 状态下，同样显示 unrevealed_sign_texture
		if tried_times == 0 or holding:
			sign_mark.sprite2d.texture = unrevealed_sign_texture
		else:
			match status:
				"locked":
					sign_mark.sprite2d.texture = locked_sign_texture
				"opened":
					sign_mark.sprite2d.texture = opened_sign_texture
	if target_portal == "none" or not enabled:
		sign_mark.enabled = false
	else:
		sign_mark.enabled = true


var interact_mutex = Mutex.new()


func _on_interacted() -> void:
	tried_times += 1
	if holding:
		if holding_reason_key:
			SceneManager.pop_os_with_str(holding_reason_key)
		return
	if target_portal == "none" or not enabled:
		return
	interact_mutex.lock()
	if status == "locked":
		# 检查是否有钥匙，尝试打开
		var key = SceneManager.get_current_prop(false)
		if prop_key and key == prop_key:
			sfx_open.global_play()
			status = "opened"
			ground_archive.set_pair(name, "status", status)
			if disable_key_after_used:
				SceneManager.disable_prop_item(key)
		else:
			sfx_locked.global_play()
			sign_mark.invalid_shake(locked_sign_texture, locked_sign_texture)
		_check_sign_mark_and_texture()
		interact_mutex.unlock()
		# 开锁尝试后，哪怕开锁成功，也需要下次操作再进入，而不是立即传送
		return
	# 传送，queue free 导致 sfx 无法播放，使用全局声源
	if status == "default":
		sfx_default.global_play()
	elif status == "opened":
		sfx_enter.global_play()
	else:
		sfx_locked.global_play()
		interact_mutex.unlock()
		return
	interact_mutex.unlock()
	before_pre_transport_wait.emit()
	if pre_transport_wait_time > 0.0:
		await get_tree().create_timer(pre_transport_wait_time).timeout
	if GlobalConfig.DEBUG:
		print("传送前往", target_scene, target_portal, " immediately=", immediately)
	var ground_loader = SceneManager.get_ground_loader() as GroundLoader
	if ground_loader:
		if immediately:
			ground_loader.transition_to_scene(target_scene, target_portal, 0.0)
		else:
			ground_loader.transition_to_scene(target_scene, target_portal)


func _on_cancel(_body = null):
	activated = false
	# disconnect signal
	var prop_hud = SceneManager.get_prop_hud() as PropHud
	if prop_hud and prop_hud.current_item_changed.is_connected(_set_sign_texture_to_prop):
		prop_hud.current_item_changed.disconnect(_set_sign_texture_to_prop)


func _reset(_body):
	_check_sign_mark_and_texture()
	activated = true
	if status == "locked":
		var key = SceneManager.get_current_prop(false)
		if key:
			_set_sign_texture_to_prop(key)
			var prop_hud = SceneManager.get_prop_hud() as PropHud
			if not prop_hud.current_item_changed.is_connected(_set_sign_texture_to_prop):
				prop_hud.current_item_changed.connect(_set_sign_texture_to_prop)


# 根据当前 prop，调整 sign 所显示的 texture
func _set_sign_texture_to_prop(_key):
	# if not prop_key or prop_key == key:
	# 	sign_mark.sprite2d.texture = matched_sign_texture
	# else:
	if tried_times:
		sign_mark.sprite2d.texture = locked_sign_texture
	else:
		sign_mark.sprite2d.texture = unrevealed_sign_texture


# 暂时不启用自动传送
# var action_times := 0
# func _input(event: InputEvent) -> void:
# 	# 长按自动传送
# 	if activated:
# 		if portal_name == "left" and target_portal == "right":
# 			if event.is_action("left"):
# 				action_times += 1
# 			elif event.is_action("right"):
# 				action_times = 0
# 			if action_times >= 7:
# 				activated = false
# 				action_times = 0
# 				%Sfx.play()
# 				_on_interacted()
# 		if portal_name == "right" and target_portal == "left":
# 			if event.is_action("right"):
# 				action_times += 1
# 			elif event.is_action("left"):
# 				action_times = 0
# 			if action_times >= 7:
# 				activated = false
# 				action_times = 0
# 				%Sfx.play()
# 				_on_interacted()


func _get_property_list() -> Array[Dictionary]:
	return [
		{
			"name": "prop_key",
			"type": TYPE_STRING,
			"hint": PROPERTY_HINT_ENUM_SUGGESTION,
			"hint_string": ",".join(items),
		}
	]


func _get(property: StringName) -> Variant:
	if property == "prop_key":
		return prop_key
	return null


func _set(property: StringName, value: Variant) -> bool:
	if property == "prop_key":
		prop_key = value
		return true
	return false