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


class HandType(Enum):
    # 短牌规则：同花 > 葫芦
    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")
    FULL_HOUSE = (6, "Full House")  
    FLUSH = (7, "Flush")
    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



class HandRanking:
    
    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ranking的5张牌

    def __str__(self):
        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:  
            return f"High Card({self.key_ranks[0].symbol})"
    
    def __lt__(self, other):
        """比较牌力，用于排序"""
        if not isinstance(other, HandRanking):
            return NotImplemented
    
        if self.hand_type.strength != other.hand_type.strength:
            return self.hand_type.strength < other.hand_type.strength
     
        for my_rank, other_rank in zip(self.key_ranks, other.key_ranks):
            if my_rank.numeric_value != other_rank.numeric_value:
                return my_rank.numeric_value < other_rank.numeric_value
        
        return False  
    def get_strength(self) -> int:
        # 返回牌力 还是 牌型＋点数
        # 基础强度 = 牌型强度 * 1000000
        strength = self.hand_type.strength * 1000000
        
        for i, rank in enumerate(self.key_ranks):
            strength += rank.numeric_value * (100 ** (4 - i))
        
        return strength