from enum import Enum
from functools import total_ordering
from typing import List, Tuple, Union, TypeVar, Any
from .card import Card, Rank, ShortDeckRank

HandTypeVar = TypeVar('HandTypeVar', bound=Enum)


@total_ordering
class HandType(Enum):
    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 isinstance(other, HandType):
            return self.strength < other.strength
        return NotImplemented

    def __eq__(self, other):
        if isinstance(other, HandType):
            return self.strength == other.strength
        return NotImplemented

    def __hash__(self):
        return hash(self.strength)


class HandRanking:
    """通用手牌排名类，支持标准扑克和短牌扑克的手牌类型"""

    def __init__(self, hand_type: Any, key_ranks: List[Union[Rank, ShortDeckRank]], 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):
        hand_type_name = self.hand_type.name if hasattr(self.hand_type, 'name') else str(self.hand_type)
        
        if hand_type_name == "FOUR_OF_A_KIND":
            return f"Quad({self.key_ranks[0].symbol})"
        elif hand_type_name == "FULL_HOUSE":
            return f"Full House({self.key_ranks[0].symbol} over {self.key_ranks[1].symbol})"
        elif hand_type_name == "FLUSH":
            return f"Flush({self.key_ranks[0].symbol} high)"
        elif hand_type_name == "STRAIGHT":
            return f"Straight({self.key_ranks[0].symbol} high)"
        elif hand_type_name == "STRAIGHT_FLUSH":
            if hasattr(self.key_ranks[0], 'symbol') and self.key_ranks[0].symbol == 'A':
                return "Royal Flush"
            else:
                return f"Straight Flush({self.key_ranks[0].symbol} high)"
        elif hand_type_name == "ROYAL_FLUSH":
            return "Royal Flush"
        elif hand_type_name == "THREE_OF_A_KIND":
            return f"Three of a Kind({self.key_ranks[0].symbol})"
        elif hand_type_name == "TWO_PAIR":
            return f"Two Pair({self.key_ranks[0].symbol} and {self.key_ranks[1].symbol})"
        elif hand_type_name == "ONE_PAIR":
            return f"Pair({self.key_ranks[0].symbol})"
        else:  # HIGH_CARD
            return f"High Card({self.key_ranks[0].symbol})"

    def __eq__(self, other):
        if not isinstance(other, HandRanking):
            return False
        self_strength = getattr(self.hand_type, 'strength', self.hand_type.value[0] if hasattr(self.hand_type.value, '__getitem__') else self.hand_type.value)
        other_strength = getattr(other.hand_type, 'strength', other.hand_type.value[0] if hasattr(other.hand_type.value, '__getitem__') else other.hand_type.value)
        return (self_strength == other_strength and self.key_ranks == other.key_ranks)

    def __lt__(self, other):
        if not isinstance(other, HandRanking):
            return NotImplemented
            
        self_strength = getattr(self.hand_type, 'strength', self.hand_type.value[0] if hasattr(self.hand_type.value, '__getitem__') else self.hand_type.value)
        other_strength = getattr(other.hand_type, 'strength', other.hand_type.value[0] if hasattr(other.hand_type.value, '__getitem__') else other.hand_type.value)
        
        if self_strength != other_strength:
            return self_strength < other_strength
            
        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