# attach_metin_dialog_system.gd
# 40250 官方 1:1 装备幽魂石/灵魂石镶嵌与双重属性对比预览系统
# 对照: uiattachmetin.py, attachstonedialog.py, char_item.cpp
class_name AttachMetinDialogSystem
extends RefCounted

const METIN_SOCKET_MAX_NUM: int = 3

const METIN_NORMAL: int = 0
const METIN_GOLD: int = 1

const METIN_SOCKET_TYPE_NONE: int = 0
const METIN_SOCKET_TYPE_SILVER: int = 1
const METIN_SOCKET_TYPE_GOLD: int = 2

const ITEM_BROKEN_METIN_VNUM: int = 28960

# 经典灵魂石属性对照表 (40250 canonical metin stones 28000~28443)
const METIN_STONES: Dictionary = {
	28030: {"name": "战神之石+0", "bonus_type": "ATT_BONUS_TO_WARRIOR", "bonus_value": 5},
	28130: {"name": "战神之石+1", "bonus_type": "ATT_BONUS_TO_WARRIOR", "bonus_value": 8},
	28230: {"name": "战神之石+2", "bonus_type": "ATT_BONUS_TO_WARRIOR", "bonus_value": 12},
	28330: {"name": "战神之石+3", "bonus_type": "ATT_BONUS_TO_WARRIOR", "bonus_value": 17},
	28430: {"name": "战神之石+4", "bonus_type": "ATT_BONUS_TO_WARRIOR", "bonus_value": 25},
	28434: {"name": "穿透之石+4", "bonus_type": "POINT_PENETRATE_PCT", "bonus_value": 8},
	28435: {"name": "致命之石+4", "bonus_type": "POINT_CRITICAL_PCT", "bonus_value": 8},
	28438: {"name": "防御之石+4", "bonus_type": "POINT_DEF_GRADE_BONUS", "bonus_value": 15},
	28442: {"name": "加速之石+4", "bonus_type": "POINT_MOV_SPEED", "bonus_value": 30},
	28960: {"name": "破碎的石头碎块", "bonus_type": "NONE", "bonus_value": 0}
}

var is_open: bool = false
var metin_pos: int = -1
var target_pos: int = -1

var metin_vnum: int = 0
var metin_subtype: int = METIN_NORMAL

var target_item_vnum: int = 0
var current_sockets: Array = [0, 0, 0]
var preview_sockets: Array = [0, 0, 0]
var target_socket_idx: int = -1

var last_packet_sent: Dictionary = {}
var last_sound_played: String = ""

signal dialog_opened(metin_pos: int, target_pos: int, preview_sockets: Array)
signal dialog_closed()
signal metin_attached(metin_pos: int, target_pos: int, target_slot_idx: int)
signal attach_failed(reason: String)

func can_attach_metin(slot_type: int, metin_type: int) -> bool:
	if metin_type == METIN_NORMAL:
		if slot_type == METIN_SOCKET_TYPE_SILVER or slot_type == METIN_SOCKET_TYPE_GOLD:
			return true
	elif metin_type == METIN_GOLD:
		if slot_type == METIN_SOCKET_TYPE_GOLD:
			return true
	return false

func open_dialog(p_metin_pos: int, p_target_pos: int, p_metin_vnum: int, p_metin_subtype: int, p_target_vnum: int, p_sockets: Array) -> bool:
	metin_pos = p_metin_pos
	target_pos = p_target_pos
	metin_vnum = p_metin_vnum
	metin_subtype = p_metin_subtype
	target_item_vnum = p_target_vnum

	current_sockets = [0, 0, 0]
	preview_sockets = [0, 0, 0]
	target_socket_idx = -1

	for i in range(mini(p_sockets.size(), METIN_SOCKET_MAX_NUM)):
		current_sockets[i] = p_sockets[i]
		preview_sockets[i] = p_sockets[i]

	# 寻找首个符合条件的开放槽位
	var found_slot: bool = false
	for i in range(METIN_SOCKET_MAX_NUM):
		var slot_state: int = current_sockets[i]
		if can_attach_metin(slot_state, metin_subtype):
			preview_sockets[i] = metin_vnum
			target_socket_idx = i
			found_slot = true
			break

	if not found_slot:
		attach_failed.emit("NO_AVAILABLE_SOCKET")
		return false

	is_open = true
	dialog_opened.emit(metin_pos, target_pos, preview_sockets)
	return true

func accept() -> bool:
	if not is_open:
		return false
	if target_socket_idx < 0:
		attach_failed.emit("INVALID_SOCKET")
		return false

	# 40250 发送 net.SendItemUseToItemPacket(self.metinItemPos, self.targetItemPos)
	last_packet_sent = {
		"header": "HEADER_CG_ITEM_USE_TO_ITEM",
		"metin_pos": metin_pos,
		"target_pos": target_pos,
		"target_socket_idx": target_socket_idx,
		"metin_vnum": metin_vnum
	}

	# 官方原版音效
	last_sound_played = "sound/ui/metinstone_insert.wav"

	metin_attached.emit(metin_pos, target_pos, target_socket_idx)
	close_dialog()
	return true

func close_dialog() -> void:
	is_open = false
	metin_pos = -1
	target_pos = -1
	dialog_closed.emit()

# 模拟服务端结算镶嵌 (支持成功率判定: 成功直接嵌入，失败产生破碎石块 28960)
func simulate_server_process(target_sockets: Array, socket_idx: int, attached_metin_vnum: int, success: bool) -> Array:
	var result_sockets: Array = target_sockets.duplicate()
	if socket_idx >= 0 and socket_idx < result_sockets.size():
		if success:
			result_sockets[socket_idx] = attached_metin_vnum
		else:
			result_sockets[socket_idx] = ITEM_BROKEN_METIN_VNUM
	return result_sockets

# 模拟卷轴清理破碎石头 (vnum 71083 / Scroll of Cleansing)
func clean_broken_socket(target_sockets: Array, socket_idx: int) -> Array:
	var result_sockets: Array = target_sockets.duplicate()
	if socket_idx >= 0 and socket_idx < result_sockets.size():
		if result_sockets[socket_idx] == ITEM_BROKEN_METIN_VNUM:
			result_sockets[socket_idx] = METIN_SOCKET_TYPE_SILVER
	return result_sockets

func get_metin_info(vnum: int) -> Dictionary:
	if METIN_STONES.has(vnum):
		return METIN_STONES[vnum]
	return {"name": "未知幽魂石", "bonus_type": "UNKNOWN", "bonus_value": 0}