import { expect, test } from 'bun:test'
import ruleHighcard from './highcard'
import Pile from '../pile'
import Card, { Index, Suit } from '../card'

test('Ten beats One', () => {
  const cardTen = new Card(Index.Ten, Suit.Club)
  const cardOne = new Card(Index.One, Suit.Club)

  const pile = new Pile([cardTen, cardOne])
  expect(ruleHighcard(pile)).toBe(cardTen)

  // Ensure it isn't just lucky ordering
  const pileFlipped = new Pile([cardOne, cardTen])
  expect(ruleHighcard(pileFlipped)).toBe(cardTen)
})

test('Ace beats King', () => {
  const cardAce = new Card(Index.Ace, Suit.Club)
  const cardKing = new Card(Index.King, Suit.Club)

  const pile = new Pile([cardAce, cardKing])
  expect(ruleHighcard(pile)).toBe(cardAce)

  // Ensure it isn't just lucky ordering
  const pileFlipped = new Pile([cardKing, cardAce])
  expect(ruleHighcard(pileFlipped)).toBe(cardAce)
})

test('two hands compared for a winner', () => {
  const cardAce = new Card(Index.Ace, Suit.Club)
  const cardKing = new Card(Index.King, Suit.Club)
  const cardTwo = new Card(Index.Two, Suit.Club)
  const cardOne = new Card(Index.One, Suit.Club)
  const hand1 = new Pile([cardAce, cardKing])
  const hand2 = new Pile([cardOne, cardTwo])

  expect(ruleHighcard(hand1)).toBe(cardAce)
  expect(ruleHighcard(hand2)).toBe(cardTwo)
})