{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "#| default_exp card"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Card\n",
    "> A playing card contains a rank and a suit."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "#| hide\n",
    "from nbdev.showdoc import *"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "#|export\n",
    "from fastcore.test import *\n",
    "from fastcore.utils import *\n",
    "from fastai_learning import *"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We will be using numbers to represent playing cards and ranks. These are the suits:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "#| export\n",
    "suits = ['♦️', '♣️', '♥️', '♣️']\n",
    "ranks = [None, \"A\"] + [str(x) for x in range(2, 11)] + [\"J\", \"Q\", \"K\"]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": "['♦️', '♣️', '♥️', '♣️']"
     },
     "execution_count": null,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "suits"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "For instance, the suit at index `0`\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": "'♦️'"
     },
     "execution_count": null,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "suits[0]"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "These are the ranks at index `1` (note that there isn't a playing card at position `0`, since we want the ranks to match the indices where possible):"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": "'A'"
     },
     "execution_count": null,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "ranks[1]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "#| export\n",
    "class Card:\n",
    "    def __init__(\n",
    "            self,\n",
    "            suit: int, # An index to the `suits`\n",
    "            rank: int  # An index to the `ranks`\n",
    "    ):\n",
    "        self.suit = suit\n",
    "        self.rank = rank\n",
    "\n",
    "    def __str__(self):\n",
    "        return f\"{ranks[self.rank]}{suits[self.suit]}\"\n",
    "\n",
    "    __repr__ = __str__\n",
    "\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "c = Card(suit=1, rank=3)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": "3♣️"
     },
     "execution_count": null,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "c"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "3♣️\n"
     ]
    }
   ],
   "source": [
    "print(c)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/markdown": "---\n\n### Card\n\n>      Card (suit:int, rank:int)\n\nInitialize self.  See help(type(self)) for accurate signature.\n\n|    | **Type** | **Details** |\n| -- | -------- | ----------- |\n| suit | int | An index to the `suits` |\n| rank | int | An index to the `ranks` |",
      "text/plain": "---\n\n### Card\n\n>      Card (suit:int, rank:int)\n\nInitialize self.  See help(type(self)) for accurate signature.\n\n|    | **Type** | **Details** |\n| -- | -------- | ----------- |\n| suit | int | An index to the `suits` |\n| rank | int | An index to the `ranks` |"
     },
     "execution_count": null,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "show_doc(Card)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "#| export\n",
    "@patch\n",
    "def __eq__(self: Card, other: Card):\n",
    "    return (self.suit, self.rank) == (other.suit, other.rank)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "#| export\n",
    "@patch\n",
    "def __lt__(self: Card, other: Card):\n",
    "    return (self.suit, self.rank) < (other.suit, other.rank)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "#| export\n",
    "@patch\n",
    "def __gt__(self: Card, other: Card):\n",
    "    return (self.suit, self.rank) > (other.suit, other.rank)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "#| hide\n",
    "test_eq(Card(suit=1, rank=3), Card(suit=1, rank=3))\n",
    "test_ne(Card(suit=1, rank=2), Card(suit=1, rank=3))\n",
    "assert Card(suit=3, rank=2) > (Card(suit=1, rank=3))\n",
    "assert not Card(suit=1, rank=3) > (Card(suit=2, rank=3))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "test_eq(Card(suit=1, rank=3), Card(suit=1, rank=3))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": "True"
     },
     "execution_count": null,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Card(suit=1, rank=3) == Card(suit=1, rank=3)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": "3♣️"
     },
     "execution_count": null,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "c"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": "True"
     },
     "execution_count": null,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "c == c"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": "True"
     },
     "execution_count": null,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "c == Card(suit=1, rank=3)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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   "display_name": "python3",
   "language": "python",
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