# point_reset_system.gd
# 40250 官方 1:1 属性点/技能重置洗点与两阶段确认系统
# 对照: uipointreset.py, questiondialog2.py, char.cpp, cmd_general.cpp
class_name PointResetSystem
extends RefCounted

const RESET_COST_YANG: int = 500

# 40250 官方四职业初始属性基准值 [CON, INT, STR, DEX]
const START_STAT: Dictionary = {
	0: [4, 3, 6, 3], # WARRIOR (战士)
	1: [3, 3, 4, 6], # ASSASSIN (刺客)
	2: [3, 5, 5, 3], # SURA (修罗)
	3: [4, 6, 3, 3]  # SHAMAN (萨满)
}

# 状态枚举
enum DialogState {
	CLOSED = 0,
	INITIAL_PROMPT = 1,
	CONFIRMATION = 2
}

var state: DialogState = DialogState.CLOSED

var player_job: int = 0
var player_gold: int = 0
var current_stats: Dictionary = {"CON": 4, "INT": 3, "STR": 6, "DEX": 3}
var unallocated_stat_points: int = 0

# 技能重置支持
var player_level: int = 1
var current_skill_tree: int = 0 # 0=未选, 1=分支A, 2=分支B
var unallocated_skill_points: int = 0
var active_skills: Dictionary = {}

var last_packet_sent: String = ""

signal dialog_opened(cost: int)
signal confirm_dialog_opened(warning_text: String)
signal dialog_closed()
signal reset_completed(new_stats: Dictionary, refund_points: int, remaining_gold: int)
signal reset_failed(reason: String)

func init_player_data(job: int, level: int, gold: int, stats: Dictionary, stat_pts: int, skill_tree: int, skill_pts: int, skills: Dictionary) -> void:
	player_job = job
	player_level = level
	player_gold = gold
	current_stats = stats.duplicate()
	unallocated_stat_points = stat_pts
	current_skill_tree = skill_tree
	unallocated_skill_points = skill_pts
	active_skills = skills.duplicate()

func open_dialog() -> void:
	state = DialogState.INITIAL_PROMPT
	dialog_opened.emit(RESET_COST_YANG)

func open_confirm_dialog() -> bool:
	if state != DialogState.INITIAL_PROMPT:
		return false

	# 检查金币是否满足 500 Yang
	if player_gold < RESET_COST_YANG:
		reset_failed.emit("NOT_ENOUGH_MONEY")
		close_dialog()
		return false

	state = DialogState.CONFIRMATION
	var warning_msg = "重置后所有属性点将被重置！确定继续吗？"
	confirm_dialog_opened.emit(warning_msg)
	return true

func accept_reset() -> bool:
	if state != DialogState.CONFIRMATION:
		return false

	if player_gold < RESET_COST_YANG:
		reset_failed.emit("NOT_ENOUGH_MONEY")
		close_dialog()
		return false

	# 扣除 500 金币
	player_gold -= RESET_COST_YANG
	last_packet_sent = "/pointreset"

	# 回退属性点
	var base_stat = START_STAT.get(player_job, [4, 3, 6, 3])
	var refund_con = maxi(0, current_stats["CON"] - base_stat[0])
	var refund_int = maxi(0, current_stats["INT"] - base_stat[1])
	var refund_str = maxi(0, current_stats["STR"] - base_stat[2])
	var refund_dex = maxi(0, current_stats["DEX"] - base_stat[3])
	var total_refund = refund_con + refund_int + refund_str + refund_dex

	unallocated_stat_points += total_refund
	current_stats["CON"] = base_stat[0]
	current_stats["INT"] = base_stat[1]
	current_stats["STR"] = base_stat[2]
	current_stats["DEX"] = base_stat[3]

	reset_completed.emit(current_stats, total_refund, player_gold)
	close_dialog()
	return true

# 官方 30 级以下老妇人技能树重洗 (Old Woman Skill Reset)
func reset_skills_at_old_woman() -> bool:
	if player_level > 30:
		reset_failed.emit("LEVEL_TOO_HIGH")
		return false

	# 40250 老妇人洗技能费用公式: level * 1000 + 2000 Yang
	var cost = player_level * 1000 + 2000
	if player_gold < cost:
		reset_failed.emit("NOT_ENOUGH_MONEY")
		return false

	player_gold -= cost
	var total_skill_pts = 0
	for sk_id in active_skills:
		total_skill_pts += active_skills[sk_id]

	active_skills.clear()
	unallocated_skill_points += total_skill_pts
	current_skill_tree = 0 # 允许重新转职选择专精分支

	return true

func close_dialog() -> void:
	state = DialogState.CLOSED
	dialog_closed.emit()