# guild_war_system.gd —— Metin2 40250 官方公会战备宣战与积分决斗裁定系统 1:1
# 对照 40250 服务端 guild_war.cpp, guild_manager.cpp, guild.h
class_name GuildWarSystem
extends RefCounted

signal war_declared(opp_guild_name: String, war_type: int, target_score: int)
signal war_started(war_type: int, duration: float)
signal score_updated(score_a: int, score_b: int)
signal war_ended(winner_side: String, score_a: int, score_b: int, reward: Dictionary)

# 40250 官方公会战模式类型
const WAR_TYPE_FIELD := 0 # 野外遭遇战 (Field War)
const WAR_TYPE_ARENA := 1 # 竞技场擂台战 (Arena War, Map 110/111)
const WAR_TYPE_FLAG  := 2 # 夺旗战 (Flag War)

# 公会战状态机
const STATE_NONE      := 0
const STATE_DECLARED  := 1 # 宣战中
const STATE_PREPARING := 2 # 备战中
const STATE_FIGHTING  := 3 # 激战中
const STATE_FINISHED  := 4 # 战役结束

# 单机竞争公会预设库
const RIVAL_GUILDS: Dictionary = {
	101: {"id": 101, "name": "暗影刺客团", "master": "夜刃", "level": 20, "ladder_points": 1200},
	102: {"id": 102, "name": "赤血狂战盟", "master": "狂屠", "level": 20, "ladder_points": 1350},
	103: {"id": 103, "name": "青云修罗殿", "master": "冥火", "level": 20, "ladder_points": 1400}
}

var war_state: int = STATE_NONE
var active_war_type: int = WAR_TYPE_ARENA
var active_opp_guild: Dictionary = {}
var target_score: int = 50 # 目标获胜积分 (50分/100分)
var time_remaining: float = 1800.0 # 30 分钟 (1800 秒)
var total_duration: float = 1800.0

var score_a: int = 0 # 玩家公会得分
var score_b: int = 0 # 敌方公会得分

var player_guild_ladder: int = 1000 # 玩家公会天梯积分
var total_wars_won: int = 0

# 发起公会宣战 (40250 CGuild::GuildWarPacket / UnderDeclaration)
func declare_war(opp_guild_id: int, war_type: int = WAR_TYPE_ARENA, win_score: int = 50, duration: float = 1800.0) -> Dictionary:
	if war_state == STATE_FIGHTING or war_state == STATE_PREPARING:
		return {"ok": false, "reason": "ALREADY_IN_WAR", "msg": "当前公会已处于战役交锋中！"}
	
	if not RIVAL_GUILDS.has(opp_guild_id):
		return {"ok": false, "reason": "INVALID_OPP_GUILD", "msg": "未知的敌对公会！"}
	
	active_opp_guild = RIVAL_GUILDS[opp_guild_id].duplicate(true)
	active_war_type = war_type
	target_score = win_score
	time_remaining = duration
	total_duration = duration
	score_a = 0
	score_b = 0
	
	war_state = STATE_DECLARED
	
	war_declared.emit(active_opp_guild["name"], active_war_type, target_score)
	
	return {
		"ok": true,
		"opp_name": active_opp_guild["name"],
		"war_type": active_war_type,
		"target_score": target_score,
		"msg": "战书已下达！向【%s】发起公会宣战。" % active_opp_guild["name"]
	}

# 响应接受战书开启战场
func start_war() -> Dictionary:
	if war_state != STATE_DECLARED:
		return {"ok": false, "reason": "NOT_IN_DECLARED_STATE"}
	
	war_state = STATE_FIGHTING
	war_started.emit(active_war_type, total_duration)
	
	return {
		"ok": true,
		"war_type": active_war_type,
		"duration": total_duration,
		"msg": "战役正式打响！双方公会成员进入战场拼杀。"
	}

# 记录战场击杀或占旗得分
func record_score(side: String, points: int = 1) -> Dictionary:
	if war_state != STATE_FIGHTING:
		return {"ok": false, "reason": "WAR_NOT_ACTIVE"}
	
	if side == "A":
		score_a += points
	elif side == "B":
		score_b += points
	
	score_updated.emit(score_a, score_b)
	
	# 检查是否率先达到目标胜分
	if score_a >= target_score or score_b >= target_score:
		var winner := "A" if score_a >= target_score else "B"
		return end_war(winner)
	
	return {
		"ok": true,
		"score_a": score_a,
		"score_b": score_b,
		"target_score": target_score
	}

# 结束战役与结算奖励
func end_war(winner: String) -> Dictionary:
	war_state = STATE_FINISHED
	
	var reward: Dictionary = {}
	if winner == "A":
		total_wars_won += 1
		player_guild_ladder += 30
		reward = {
			"guild_exp": 5000,
			"guild_gold": 1000000,
			"ladder_change": 30,
			"new_ladder": player_guild_ladder
		}
	elif winner == "B":
		player_guild_ladder = maxi(0, player_guild_ladder - 20)
		reward = {
			"guild_exp": 1000,
			"guild_gold": 200000,
			"ladder_change": -20,
			"new_ladder": player_guild_ladder
		}
	else:
		reward = {
			"guild_exp": 2000,
			"guild_gold": 500000,
			"ladder_change": 0,
			"new_ladder": player_guild_ladder
		}
	
	war_ended.emit(winner, score_a, score_b, reward)
	
	var msg_title := "大获全胜" if winner == "A" else ("虽败犹荣" if winner == "B" else "战局握手言和")
	return {
		"ok": true,
		"winner": winner,
		"score_a": score_a,
		"score_b": score_b,
		"reward": reward,
		"msg": "公会战结束【%s】！比分：%d - %d。" % [msg_title, score_a, score_b]
	}

# 战役时钟心跳
func update(delta: float) -> void:
	if war_state != STATE_FIGHTING:
		return
	time_remaining -= delta
	if time_remaining <= 0.0:
		# 时间耗尽，按现有比分决出
		var winner := "A" if score_a > score_b else ("B" if score_b > score_a else "DRAW")
		end_war(winner)

# 序列化
func serialize() -> Dictionary:
	return {
		"war_state": war_state,
		"active_war_type": active_war_type,
		"active_opp_guild": active_opp_guild.duplicate(true),
		"target_score": target_score,
		"time_remaining": time_remaining,
		"score_a": score_a,
		"score_b": score_b,
		"player_guild_ladder": player_guild_ladder,
		"total_wars_won": total_wars_won
	}

# 反序列化
func deserialize(data: Dictionary) -> void:
	war_state = int(data.get("war_state", STATE_NONE))
	active_war_type = int(data.get("active_war_type", WAR_TYPE_ARENA))
	active_opp_guild = data.get("active_opp_guild", {}).duplicate(true)
	target_score = int(data.get("target_score", 50))
	time_remaining = float(data.get("time_remaining", 1800.0))
	score_a = int(data.get("score_a", 0))
	score_b = int(data.get("score_b", 0))
	player_guild_ladder = int(data.get("player_guild_ladder", 1000))
	total_wars_won = int(data.get("total_wars_won", 0))