"""石头剪刀布游戏"""
import random
import logging
from games.base import BaseGame
from utils.parser import CommandParser

logger = logging.getLogger(__name__)


class RPSGame(BaseGame):
    """石头剪刀布游戏"""
    
    # 选择列表
    CHOICES = ["石头", "剪刀", "布"]
    
    # 胜负关系：key 击败 value
    WINS_AGAINST = {
        "石头": "剪刀",
        "剪刀": "布",
        "布": "石头"
    }
    
    # 英文/表情符号映射
    CHOICE_MAP = {
        "石头": "石头", "rock": "石头", "🪨": "石头", "👊": "石头",
        "剪刀": "剪刀", "scissors": "剪刀", "✂️": "剪刀", "✌️": "剪刀",
        "布": "布", "paper": "布", "📄": "布", "✋": "布"
    }
    
    async def handle(self, command: str, chat_id: int, user_id: int) -> str:
        """处理石头剪刀布指令
        
        Args:
            command: 指令，如 ".rps 石头" 或 ".rps stats"
            chat_id: 会话ID
            user_id: 用户ID
            
        Returns:
            回复消息
        """
        try:
            # 提取参数
            _, args = CommandParser.extract_command_args(command)
            args = args.strip()
            
            # 查看战绩
            if args in ['stats', '战绩', '统计']:
                return self._get_stats(user_id)
            
            # 没有参数，显示帮助
            if not args:
                return self.get_help()
            
            # 解析用户选择
            player_choice = self._parse_choice(args)
            if not player_choice:
                return f"❌ 无效的选择：{args}\n\n{self.get_help()}"
            
            # 机器人随机选择
            bot_choice = random.choice(self.CHOICES)
            
            # 判定胜负
            result = self._judge(player_choice, bot_choice)
            
            # 更新统计
            if result == 'win':
                self.db.update_game_stats(user_id, 'rps', win=True)
            elif result == 'loss':
                self.db.update_game_stats(user_id, 'rps', loss=True)
            elif result == 'draw':
                self.db.update_game_stats(user_id, 'rps', draw=True)
            
            # 格式化输出
            return self._format_result(player_choice, bot_choice, result)
            
        except Exception as e:
            logger.error(f"处理石头剪刀布指令错误: {e}", exc_info=True)
            return f"❌ 处理指令出错: {str(e)}"
    
    def _parse_choice(self, choice_str: str) -> str:
        """解析用户选择
        
        Args:
            choice_str: 用户输入的选择
            
        Returns:
            标准化的选择（石头/剪刀/布）或空字符串
        """
        choice_str = choice_str.lower().strip()
        return self.CHOICE_MAP.get(choice_str, "")
    
    def _judge(self, player: str, bot: str) -> str:
        """判定胜负
        
        Args:
            player: 玩家选择
            bot: 机器人选择
            
        Returns:
            'win', 'loss', 或 'draw'
        """
        if player == bot:
            return 'draw'
        elif self.WINS_AGAINST[player] == bot:
            return 'win'
        else:
            return 'loss'
    
    def _format_result(self, player_choice: str, bot_choice: str, result: str) -> str:
        """格式化游戏结果
        
        Args:
            player_choice: 玩家选择
            bot_choice: 机器人选择
            result: 游戏结果
            
        Returns:
            格式化的Markdown消息
        """
        # 表情符号映射
        emoji_map = {
            "石头": "🪨",
            "剪刀": "✂️",
            "布": "📄"
        }
        
        text = f"## ✊ 石头剪刀布\n\n"
        text += f"**你出**：{emoji_map[player_choice]} {player_choice}\n\n"
        text += f"**我出**：{emoji_map[bot_choice]} {bot_choice}\n\n"
        
        if result == 'win':
            text += "**结果**：<font color='#4CAF50'>🎉 你赢了！</font>\n"
        elif result == 'loss':
            text += "**结果**：<font color='#F44336'>😢 你输了！</font>\n"
        else:
            text += "**结果**：<font color='#FFC107'>🤝 平局！</font>\n"
        
        return text
    
    def _get_stats(self, user_id: int) -> str:
        """获取用户战绩
        
        Args:
            user_id: 用户ID
            
        Returns:
            战绩信息
        """
        stats = self.db.get_game_stats(user_id, 'rps')
        
        total = stats['total_plays']
        if total == 0:
            return "📊 你还没有玩过石头剪刀布呢～\n\n快来试试吧！输入 `.rps 石头/剪刀/布` 开始游戏"
        
        wins = stats['wins']
        losses = stats['losses']
        draws = stats['draws']
        win_rate = (wins / total * 100) if total > 0 else 0
        
        text = f"## 📊 石头剪刀布战绩\n\n"
        text += f"**总局数**：{total} 局\n\n"
        text += f"**胜利**：{wins} 次 🎉\n\n"
        text += f"**失败**：{losses} 次 😢\n\n"
        text += f"**平局**：{draws} 次 🤝\n\n"
        text += f"**胜率**：<font color='#4CAF50'>{win_rate:.1f}%</font>\n"
        
        return text
    
    def get_help(self) -> str:
        """获取帮助信息"""
        return """## ✊ 石头剪刀布

### 基础用法
- `.rps 石头` - 出石头
- `.rps 剪刀` - 出剪刀
- `.rps 布` - 出布

### 其他指令
- `.rps stats` - 查看战绩

### 支持的输入
- 中文：石头、剪刀、布
- 英文：rock、scissors、paper
- 表情：🪨 ✂️ 📄

### 示例
```
.rps 石头
.rps rock
.rps 🪨
```
"""