"""
Hand ranking module for poker game
"""

from enum import Enum
from typing import List, Tuple
from .card import Card, Rank


class HandType(Enum):
    """
    手牌类型枚举，按强度排序
    """
    HIGH_CARD = (1, "High Card")
    ONE_PAIR = (2, "Pair")
    TWO_PAIR = (3, "Two Pair")
    THREE_OF_A_KIND = (4, "Three of a Kind")
    STRAIGHT = (5, "Straight")
    FLUSH = (6, "Flush")
    FULL_HOUSE = (7, "Full House")
    FOUR_OF_A_KIND = (8, "Four of a Kind")
    STRAIGHT_FLUSH = (9, "Straight Flush")
    ROYAL_FLUSH = (10, "Royal Flush")

    def __new__(cls, strength, name):
        obj = object.__new__(cls)
        obj._value_ = strength
        obj.strength = strength
        obj.type_name = name
        return obj

    def __str__(self):
        return self.type_name

    def __lt__(self, other):
        if not isinstance(other, HandType):
            return NotImplemented
        return self.strength < other.strength

    def __le__(self, other):
        if not isinstance(other, HandType):
            return NotImplemented
        return self.strength <= other.strength

    def __gt__(self, other):
        if not isinstance(other, HandType):
            return NotImplemented
        return self.strength > other.strength

    def __ge__(self, other):
        if not isinstance(other, HandType):
            return NotImplemented
        return self.strength >= other.strength


class HandRanking:
    """
    手牌排名类，包含手牌类型和关键牌
    """
    
    def __init__(self, hand_type: HandType, key_ranks: List[Rank], cards: List[Card]):
        self.hand_type = hand_type
        self.key_ranks = key_ranks  # 用于比较的关键点数
        self.cards = cards  # 组成这个排名的5张牌

    def __str__(self):
        """
        返回手牌排名的字符串表示
        """
        if self.hand_type == HandType.FOUR_OF_A_KIND:
            return f"Quad({self.key_ranks[0].symbol})"
        elif self.hand_type == HandType.FULL_HOUSE:
            return f"Full House({self.key_ranks[0].symbol} over {self.key_ranks[1].symbol})"
        elif self.hand_type == HandType.FLUSH:
            return f"Flush({self.key_ranks[0].symbol} high)"
        elif self.hand_type == HandType.STRAIGHT:
            return f"Straight({self.key_ranks[0].symbol} high)"
        elif self.hand_type == HandType.STRAIGHT_FLUSH:
            if self.key_ranks[0] == Rank.ACE:
                return "Royal Flush"
            else:
                return f"Straight Flush({self.key_ranks[0].symbol} high)"
        elif self.hand_type == HandType.ROYAL_FLUSH:
            return "Royal Flush"
        elif self.hand_type == HandType.THREE_OF_A_KIND:
            return f"Three of a Kind({self.key_ranks[0].symbol})"
        elif self.hand_type == HandType.TWO_PAIR:
            return f"Two Pair({self.key_ranks[0].symbol} and {self.key_ranks[1].symbol})"
        elif self.hand_type == HandType.ONE_PAIR:
            return f"Pair({self.key_ranks[0].symbol})"
        else:  # HIGH_CARD
            return f"High Card({self.key_ranks[0].symbol})"

    def __repr__(self):
        return f"HandRanking({self.hand_type}, {[r.symbol for r in self.key_ranks]})"

    def __eq__(self, other):
        if not isinstance(other, HandRanking):
            return False
        return (self.hand_type == other.hand_type and 
                self.key_ranks == other.key_ranks)

    def __lt__(self, other):
        if not isinstance(other, HandRanking):
            return NotImplemented
        
        # 首先比较手牌类型
        if self.hand_type != other.hand_type:
            return self.hand_type < other.hand_type
        
        # 如果手牌类型相同，比较关键点数
        for self_rank, other_rank in zip(self.key_ranks, other.key_ranks):
            if self_rank != other_rank:
                return self_rank < other_rank
        
        return False  # 完全相等

    def __le__(self, other):
        return self == other or self < other

    def __gt__(self, other):
        return not self <= other

    def __ge__(self, other):
        return not self < other