"""
游戏状态管理
"""
from typing import Optional, Dict, Any, List
from dataclasses import dataclass
from enum import Enum, auto

from ..core.enums import Nation, GamePhase
from ..core.battle_engine import BattleEngine
from ..cards.card_manager import CardManager
from ..cards.deck import Deck
from ..cards.card import BaseCard, CounterCard


class GameStatePhase(Enum):
    """游戏阶段枚举"""
    INITIALIZATION = auto()      # 初始化阶段
    STRATEGIC_DEPLOYMENT = auto() # 战略调度阶段
    GAME_ACTIVE = auto()         # 游戏进行阶段
    GAME_ENDED = auto()          # 游戏结束阶段


@dataclass
class PlayerState:
    """玩家状态"""
    name: str
    player_id: int                # 0 或 1
    major_nation: Nation
    minor_nation: Nation
    card_manager: CardManager
    kredits: int = 0              # 当前可用kredits
    kredits_slot: int = 0         # kredits槽数
    set_counters: List[CounterCard] = None  # 已设置的反制卡
    
    def __post_init__(self):
        if self.set_counters is None:
            self.set_counters = []


class GameState:
    """游戏状态管理器"""
    
    def __init__(
        self,
        player1_name: str,
        player1_deck: Deck,
        player2_name: str, 
        player2_deck: Deck,
        debug_mode: bool = False
    ):
        # 基础游戏信息
        self.debug_mode = debug_mode
        self.phase = GameStatePhase.INITIALIZATION
        
        # 创建战斗引擎
        self.battle_engine = BattleEngine(player1_name, player2_name, debug_mode)
        
        # 创建玩家状态
        self.player1 = PlayerState(
            name=player1_name,
            player_id=0,
            major_nation=player1_deck.major_nation,
            minor_nation=player1_deck.minor_nation,
            card_manager=CardManager(player1_deck)
        )
        
        self.player2 = PlayerState(
            name=player2_name,
            player_id=1,
            major_nation=player2_deck.major_nation,
            minor_nation=player2_deck.minor_nation,
            card_manager=CardManager(player2_deck)
        )
        
        # 游戏流程状态
        self.current_turn = 1
        self.active_player_id = 0  # 当前行动玩家 (0 或 1)
        
        # 先后手确定
        self.first_player_id = 0   # 先手玩家
        self.second_player_id = 1  # 后手玩家
        
        # 游戏结束状态
        self.game_ended = False
        self.winner_id: Optional[int] = None
        self.end_reason = ""
        
        # 事件历史
        self.event_history = []
        
        # 初始化游戏
        self._initialize_game()
    
    def _initialize_game(self):
        """初始化游戏状态"""
        # 部署HQ到战场
        self._deploy_hqs()
        
        # 初始抽牌
        self._initial_card_draw()
        
        # 进入战略调度阶段
        self.phase = GameStatePhase.STRATEGIC_DEPLOYMENT
        
        if self.debug_mode:
            print(f"游戏初始化完成")
            print(f"先手玩家: {self.get_player(self.first_player_id).name}")
            print(f"后手玩家: {self.get_player(self.second_player_id).name}")
    
    def _deploy_hqs(self):
        """部署双方的HQ到战场"""
        # 创建HQ并部署到支援线
        from ..battlefield.battlefield import HQ
        
        # 玩家1的HQ
        hq1 = HQ(player_id=self.player1.name)
        self.battle_engine.battlefield.player1_support.objectives.append(hq1)
        
        # 玩家2的HQ  
        hq2 = HQ(player_id=self.player2.name)
        self.battle_engine.battlefield.player2_support.objectives.append(hq2)
        
        if self.debug_mode:
            print(f"HQ部署完成: {self.player1.name} vs {self.player2.name}")
    
    def _initial_card_draw(self):
        """初始抽牌"""
        # 先手玩家摸4张牌
        first_player = self.get_player(self.first_player_id)
        first_cards = first_player.card_manager.initial_draw(4)
        
        # 后手玩家摸5张牌  
        second_player = self.get_player(self.second_player_id)
        second_cards = second_player.card_manager.initial_draw(5)
        
        if self.debug_mode:
            print(f"{first_player.name} 初始摸牌: {len(first_cards)}张")
            print(f"{second_player.name} 初始摸牌: {len(second_cards)}张")
    
    def get_player(self, player_id: int) -> PlayerState:
        """获取玩家状态"""
        if player_id == 0:
            return self.player1
        elif player_id == 1:
            return self.player2
        else:
            raise ValueError(f"无效的玩家ID: {player_id}")
    
    def get_current_player(self) -> PlayerState:
        """获取当前行动玩家"""
        return self.get_player(self.active_player_id)
    
    def get_opponent(self, player_id: int) -> PlayerState:
        """获取对手玩家"""
        return self.get_player(1 - player_id)
    
    def get_current_player_id(self) -> int:
        """获取当前行动玩家ID"""
        return self.active_player_id
    
    def get_battlefield(self):
        """获取战场"""
        return self.battle_engine.battlefield
    
    def get_battle_engine(self) -> BattleEngine:
        """获取战斗引擎"""
        return self.battle_engine
    
    def can_perform_strategic_deployment(self, player_id: int) -> bool:
        """检查玩家是否可以进行战略调度"""
        if self.phase != GameStatePhase.STRATEGIC_DEPLOYMENT:
            return False
        
        player = self.get_player(player_id)
        return not player.card_manager.strategic_deployment_completed
    
    def perform_strategic_deployment(self, player_id: int, cards_to_mulligan: List[BaseCard]) -> List[BaseCard]:
        """
        执行战略调度
        
        Args:
            player_id: 玩家ID
            cards_to_mulligan: 要重抽的卡牌
        
        Returns:
            新抽到的卡牌列表
        """
        if not self.can_perform_strategic_deployment(player_id):
            raise ValueError("当前不能进行战略调度")
        
        player = self.get_player(player_id)
        new_cards = player.card_manager.strategic_deployment(cards_to_mulligan)
        
        if self.debug_mode:
            print(f"{player.name} 完成战略调度，重抽了 {len(cards_to_mulligan)} 张牌")
        
        return new_cards
    
    def is_strategic_deployment_complete(self) -> bool:
        """检查是否所有玩家都完成了战略调度"""
        return (self.player1.card_manager.strategic_deployment_completed and 
                self.player2.card_manager.strategic_deployment_completed)
    
    def start_main_game(self):
        """开始正式游戏"""
        if self.phase != GameStatePhase.STRATEGIC_DEPLOYMENT:
            raise ValueError("必须在战略调度阶段后才能开始正式游戏")
        
        if not self.is_strategic_deployment_complete():
            # 自动完成未完成的战略调度（不重抽任何卡）
            if not self.player1.card_manager.strategic_deployment_completed:
                self.perform_strategic_deployment(0, [])
            if not self.player2.card_manager.strategic_deployment_completed:
                self.perform_strategic_deployment(1, [])
        
        # 进入游戏进行阶段
        self.phase = GameStatePhase.GAME_ACTIVE
        
        # 设置当前玩家为先手
        self.active_player_id = self.first_player_id
        
        # 开始先手玩家的第一回合（不摸牌）
        self._start_player_turn(draw_card=False)
        
        if self.debug_mode:
            print(f"正式游戏开始，先手玩家: {self.get_current_player().name}")
    
    def _start_player_turn(self, draw_card: bool = True):
        """
        开始玩家回合
        
        Args:
            draw_card: 是否摸牌（先手第一回合不摸牌）
        """
        current_player = self.get_current_player()
        
        # 更新kredits系统
        self._update_kredits_system()
        
        # 摸牌（除了先手第一回合）
        if draw_card:
            def hq_damage_callback(damage: int):
                """HQ疲劳伤害回调"""
                battlefield = self.get_battlefield()
                if current_player.player_id == 0:
                    hq = battlefield.player1_support.get_hq()
                else:
                    hq = battlefield.player2_support.get_hq()
                
                if hq:
                    actual_damage = hq.take_damage(damage)
                    if self.debug_mode:
                        print(f"{current_player.name} 的HQ受到疲劳伤害: {actual_damage}")
                    
                    # 检查游戏是否结束
                    if hq.is_destroyed():
                        self._end_game(1 - current_player.player_id, "HQ被摧毁（疲劳）")
            
            drawn_card = current_player.card_manager.draw_card(hq_damage_callback)
            if self.debug_mode and drawn_card:
                print(f"{current_player.name} 摸牌: {drawn_card.name}")
        
        if self.debug_mode:
            print(f"回合 {self.current_turn}: {current_player.name} 的回合开始")
            print(f"Kredits: {current_player.kredits}/{current_player.kredits_slot}")
    
    def _update_kredits_system(self):
        """更新kredits系统"""
        current_player = self.get_current_player()
        
        # 增长kredits槽（最大12）
        if current_player.kredits_slot < 12:
            current_player.kredits_slot += 1
        
        # 重置当前kredits为槽数
        current_player.kredits = current_player.kredits_slot
        
        # 同步战斗引擎的kredits
        if current_player.player_id == 0:
            self.battle_engine.player1_kredits_slot = current_player.kredits_slot
            self.battle_engine.player1_kredits = current_player.kredits
        else:
            self.battle_engine.player2_kredits_slot = current_player.kredits_slot
            self.battle_engine.player2_kredits = current_player.kredits
    
    def end_turn(self):
        """结束当前玩家回合"""
        if self.phase != GameStatePhase.GAME_ACTIVE:
            raise ValueError("只能在游戏进行阶段结束回合")
        
        current_player = self.get_current_player()
        
        if self.debug_mode:
            print(f"{current_player.name} 结束回合")
        
        # 切换到对手
        self.active_player_id = 1 - self.active_player_id
        
        # 如果切换到先手玩家，增加回合数
        if self.active_player_id == self.first_player_id:
            self.current_turn += 1
        
        # 开始对手回合
        self._start_player_turn(draw_card=True)
        
        # 同步战斗引擎的状态
        self.battle_engine.active_player = self.active_player_id
        self.battle_engine.current_turn = self.current_turn
    
    def _end_game(self, winner_id: int, reason: str):
        """结束游戏"""
        self.game_ended = True
        self.winner_id = winner_id
        self.end_reason = reason
        self.phase = GameStatePhase.GAME_ENDED
        
        winner = self.get_player(winner_id)
        if self.debug_mode:
            print(f"游戏结束！获胜者: {winner.name} ({reason})")
    
    def check_win_condition(self):
        """检查胜利条件"""
        if self.game_ended:
            return
        
        # 检查HQ是否被摧毁
        battlefield = self.get_battlefield()
        
        hq1 = battlefield.player1_support.get_hq()
        if hq1 and hq1.is_destroyed():
            self._end_game(1, "摧毁敌方HQ")
            return
        
        hq2 = battlefield.player2_support.get_hq()
        if hq2 and hq2.is_destroyed():
            self._end_game(0, "摧毁敌方HQ")
            return
    
    def get_game_statistics(self) -> Dict[str, Any]:
        """获取游戏统计信息"""
        return {
            'current_turn': self.current_turn,
            'phase': self.phase.name,
            'active_player': self.get_current_player().name,
            'game_ended': self.game_ended,
            'winner': self.get_player(self.winner_id).name if self.winner_id is not None else None,
            'end_reason': self.end_reason,
            'player1_stats': {
                'name': self.player1.name,
                'nations': f"{self.player1.major_nation}/{self.player1.minor_nation}",
                'kredits': f"{self.player1.kredits}/{self.player1.kredits_slot}",
                'card_stats': self.player1.card_manager.get_statistics()
            },
            'player2_stats': {
                'name': self.player2.name,
                'nations': f"{self.player2.major_nation}/{self.player2.minor_nation}",
                'kredits': f"{self.player2.kredits}/{self.player2.kredits_slot}",
                'card_stats': self.player2.card_manager.get_statistics()
            }
        }