From 73c9dd26b53552376ce44a359fa772371c447585 Mon Sep 17 00:00:00 2001
From: Xevion <xevioni@yandex.com>
Date: Sat, 23 Jan 2021 20:35:43 -0600
Subject: [PATCH] start moving to full blackjack processing, Blackjack and Card
 class

---
 bot/blackjack.py | 111 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 bot/blackjack.py

diff --git a/bot/blackjack.py b/bot/blackjack.py
new file mode 100644
index 0000000..5af56d9
--- /dev/null
+++ b/bot/blackjack.py
@@ -0,0 +1,111 @@
+import re
+from typing import Tuple, Optional, List, Union, Dict
+
+from bot import exceptions
+
+
+class Card(object):
+    suits = {'h': 'Hearts', 's': 'Spades', 'c': 'Clubs', 'd': 'Diamonds'}
+    symbols = {'10': 'Ten', '9': 'Nine', '8': 'Eight', '7': 'Seven', '6': 'Six', '5': 'Five', '4': 'Four', '3': 'Three',
+               '2': 'Two', 'k': 'King', 'q': 'Queen', 'j': 'Jack', 'a': 'Ace'}
+
+    def __init__(self, card: str) -> None:
+        self.raw_card = card
+        self.symbol, self.suit = self.parts()
+
+    @property
+    def value(self, safe: bool = True) -> int:
+        """
+        Attempts to determine the numerical value of the card.
+
+        Aces and unknown cards will raise an exception, unless the safe boolean is set to False.
+        """
+        if self.isAce():
+            if safe:
+                raise exceptions.NoAceValue(
+                    'The Ace has multiple values (1 and 11) in Blackjack. Special handling is required.')
+            return 0
+
+        if self.isFace():
+            return 10
+
+        numeric_match = re.match(r'^(\d{1,2})', self.raw_card)
+        if numeric_match is not None:
+            return int(numeric_match.group(1))
+
+        if safe:
+            raise exceptions.IndetermineValue('Could not determine the numeric value of this card.')
+        return 0
+
+    def isAce(self) -> bool:
+        return self.symbol == 'a'
+
+    def isNumerical(self) -> bool:
+        return self.symbol.isnumeric()
+
+    def isFace(self) -> bool:
+        return self.symbol in ['q', 'k', 'j']
+
+    def parts(self) -> Tuple[str, str]:
+        """
+        Separates the raw card identifier into it's symbol and suit.
+        Handles aces, face cards and numerical cards with any of the four suites.
+        """
+        match = re.match(r'^(\d{1,2}|[aqkj])([cdhs])$', self.raw_card)
+        return match.group(1), match.group(2)
+
+    def __repr__(self) -> str:
+        return f'Card({self.symbols[self.symbol]} of {self.suits[self.suit]})'
+
+
+def generate_table_structure(filename: str, column_keys: List[str], row_keys: List[str]) -> Dict[Tuple[str, str], str]:
+    data = {}
+    with open(filename) as hard_file:
+        raw_data = [list(line) for line in hard_file.read().split('\n')]
+    for x, col_key in enumerate(column_keys):
+        for y, row_key in enumerate(row_keys):
+            data[(col_key, row_key)] = raw_data[y][x]
+    return data
+
+
+class Blackjack(object):
+    # The row and column headers for the hair, soft and pair baseline tables.
+    hard_column = ['2', '3', '4', '5', '6', '7', '8', '9', 'T', 'A']
+    hard_row = ['20', '19', '18', '17', '16', '15', '14', '13', '12', '11', '10', '9', '8', '7', '6', '5']
+    soft_column = ['2', '3', '4', '5', '6', '7', '8', '9', 'T', 'A']
+    soft_row = ['A-9', 'A-8', 'A-7', 'A-6', 'A-5', 'A-4', 'A-3', 'A-2']
+    pair_column = ['2', '3', '4', '5', '6', '7', '8', '9', 'T', 'A']
+    pair_row = ['A-A', 'T-T', '9-9', '8-8', '7-7', '6-6', '5-5', '4-4', '3-3', '2-2']
+
+    hard_data = generate_table_structure('static/baseline_hard.dat', hard_column, hard_row)
+    soft_data = generate_table_structure('static/baseline_soft.dat', soft_column, soft_row)
+    pair_data = generate_table_structure('static/baseline_pairs.dat', pair_column, pair_row)
+
+    HARD = 0
+    SOFT = 1
+    PAIR = 2
+
+    @staticmethod
+    def choose(options: Tuple[bool, bool, bool, bool], cards: Tuple[str, Optional[str], Tuple[int, bool]],
+               dealer: Tuple[str, Optional[str], Tuple[int, bool]]) -> str:
+        """With all information presented, calculates the final decision."""
+
+    def get_ideal_choice(self, cards: List[Card],
+                         dealer: Tuple[str, Optional[str], Tuple[int, bool]]) -> str:
+        """Gets the ideal baseline strategy choice based on my cards and the bot's cards."""
+
+    def options_convert(self, choice: str, options: Tuple[bool, bool, bool, bool]):
+        """Converts the choice to the best possible choice based on the options given by the bot."""
+
+    @classmethod
+    def access(cls, table: Union[HARD, SOFT, PAIR], key: Tuple[str, str]) -> str:
+        """
+        Access table data given a column and row key.
+
+        :param key:
+        :param table:
+        :return:
+        """
+        if table == cls.HARD: return cls.hard_data[key]
+        if table == cls.SOFT: return cls.soft_data[key]
+        if table == cls.PAIR: return cls.pair_data[key]