"""
卡牌管理器 - 管理手牌、抽牌堆、弃牌堆
"""
from typing import List, Optional, Set
import random
from collections import deque

from .card import BaseCard
from .deck import Deck


class CardManager:
    """卡牌管理器 - 管理单个玩家的所有卡牌状态"""
    
    def __init__(self, deck: Deck):
        self.deck = deck
        
        # 抽牌堆 - 使用deque提高性能
        self.draw_pile: deque = deque(deck.get_deck_cards())
        
        # 手牌
        self.hand: List[BaseCard] = []
        
        # 弃牌堆
        self.discard_pile: List[BaseCard] = []
        
        # 疲劳系统
        self.fatigue_damage = 1  # 当前疲劳伤害
        self.total_fatigue_taken = 0  # 总疲劳伤害
        
        # 战略调度标记
        self.strategic_deployment_completed = False
        
        # 手牌大小限制（如果有的话）
        self.max_hand_size = 10  # 默认最大手牌数
        
        # 洗牌抽牌堆
        self.shuffle_draw_pile()
    
    def shuffle_draw_pile(self):
        """洗牌抽牌堆"""
        draw_list = list(self.draw_pile)
        random.shuffle(draw_list)
        self.draw_pile = deque(draw_list)
    
    def draw_card(self, hq_defense_callback: callable = None) -> Optional[BaseCard]:
        """
        抽一张牌
        如果抽牌堆为空，对HQ造成疲劳伤害
        
        Args:
            hq_defense_callback: HQ受伤回调函数，接收伤害值作为参数
        
        Returns:
            抽到的卡牌，如果抽牌堆为空且造成疲劳伤害则返回None
        """
        if self.draw_pile:
            # 正常抽牌
            card = self.draw_pile.popleft()
            self.hand.append(card)
            return card
        else:
            # 抽牌堆为空，造成疲劳伤害
            if hq_defense_callback:
                hq_defense_callback(self.fatigue_damage)
            
            self.total_fatigue_taken += self.fatigue_damage
            self.fatigue_damage += 1  # 疲劳伤害递增
            
            return None
    
    def draw_multiple_cards(self, count: int, hq_defense_callback: callable = None) -> List[BaseCard]:
        """
        抽多张牌
        
        Args:
            count: 要抽的牌数
            hq_defense_callback: HQ受伤回调函数
        
        Returns:
            成功抽到的卡牌列表
        """
        drawn_cards = []
        for _ in range(count):
            card = self.draw_card(hq_defense_callback)
            if card:
                drawn_cards.append(card)
        return drawn_cards
    
    def initial_draw(self, count: int) -> List[BaseCard]:
        """
        初始摸牌（不会触发疲劳伤害）
        
        Args:
            count: 要抽的牌数
        
        Returns:
            抽到的卡牌列表
        """
        drawn_cards = []
        for _ in range(min(count, len(self.draw_pile))):
            if self.draw_pile:
                card = self.draw_pile.popleft()
                self.hand.append(card)
                drawn_cards.append(card)
        return drawn_cards
    
    def play_card_from_hand(self, card: BaseCard) -> bool:
        """
        从手牌打出一张卡
        
        Args:
            card: 要打出的卡牌
        
        Returns:
            是否成功从手牌移除
        """
        if card in self.hand:
            self.hand.remove(card)
            return True
        return False
    
    def discard_card(self, card: BaseCard):
        """将卡牌放入弃牌堆"""
        self.discard_pile.append(card)
    
    def discard_from_hand(self, card: BaseCard) -> bool:
        """
        从手牌弃置一张卡
        
        Args:
            card: 要弃置的卡牌
        
        Returns:
            是否成功弃置
        """
        if card in self.hand:
            self.hand.remove(card)
            self.discard_card(card)
            return True
        return False
    
    def strategic_deployment(self, cards_to_mulligan: List[BaseCard]) -> List[BaseCard]:
        """
        战略调度 - 重新抽取不想要的卡牌
        
        Args:
            cards_to_mulligan: 要重抽的卡牌列表
        
        Returns:
            新抽到的卡牌列表
        """
        if self.strategic_deployment_completed:
            raise ValueError("战略调度已经完成，不能重复进行")
        
        # 验证所有卡牌都在手牌中
        for card in cards_to_mulligan:
            if card not in self.hand:
                raise ValueError(f"卡牌 {card.name} 不在手牌中")
        
        # 移除要重抽的卡牌
        for card in cards_to_mulligan:
            self.hand.remove(card)
        
        # 将这些卡牌放回抽牌堆
        for card in cards_to_mulligan:
            self.draw_pile.append(card)
        
        # 重新洗牌
        self.shuffle_draw_pile()
        
        # 抽取相同数量的新卡
        new_cards = []
        for _ in range(len(cards_to_mulligan)):
            if self.draw_pile:
                card = self.draw_pile.popleft()
                self.hand.append(card)
                new_cards.append(card)
        
        self.strategic_deployment_completed = True
        return new_cards
    
    def can_draw_safely(self) -> bool:
        """检查是否可以安全抽牌（不会触发疲劳）"""
        return len(self.draw_pile) > 0
    
    def cards_remaining_in_deck(self) -> int:
        """返回抽牌堆剩余卡牌数量"""
        return len(self.draw_pile)
    
    def hand_size(self) -> int:
        """返回当前手牌数量"""
        return len(self.hand)
    
    def is_hand_full(self) -> bool:
        """检查手牌是否已满"""
        return len(self.hand) >= self.max_hand_size
    
    def get_hand_copy(self) -> List[BaseCard]:
        """获取手牌的副本"""
        return self.hand.copy()
    
    def get_card_in_hand_by_name(self, name: str) -> Optional[BaseCard]:
        """根据名称在手牌中查找卡牌"""
        for card in self.hand:
            if card.name == name:
                return card
        return None
    
    def get_playable_cards(self, current_kredits: int) -> List[BaseCard]:
        """
        获取当前可以打出的卡牌（基于费用）
        
        Args:
            current_kredits: 当前可用的kredits
        
        Returns:
            可以打出的卡牌列表
        """
        playable = []
        for card in self.hand:
            if card.stats.cost <= current_kredits:
                playable.append(card)
        return playable
    
    def reshuffle_discard_into_deck(self):
        """
        将弃牌堆重新洗入抽牌堆
        这个功能可能在某些特殊卡牌效果中使用
        """
        if self.discard_pile:
            # 将弃牌堆的卡牌加入抽牌堆
            for card in self.discard_pile:
                self.draw_pile.append(card)
            
            # 清空弃牌堆
            self.discard_pile.clear()
            
            # 重新洗牌
            self.shuffle_draw_pile()
    
    def get_statistics(self) -> dict:
        """获取卡牌管理器统计信息"""
        return {
            'hand_size': len(self.hand),
            'cards_in_deck': len(self.draw_pile),
            'cards_in_discard': len(self.discard_pile),
            'fatigue_damage': self.fatigue_damage,
            'total_fatigue_taken': self.total_fatigue_taken,
            'strategic_deployment_used': self.strategic_deployment_completed,
            'max_hand_size': self.max_hand_size
        }