import { expect } from 'chai'
import {
  findWinner,
  hasWinner,
} from './tic-tac-toe'

describe( 'tic-tac-toe', () => {
  const translate = plays =>
    plays
      .map( row =>
        row.split( '|' ) )

  describe( 'game in progress', () => {
    const inProgress = [
      [ ' | | ',
        ' | | ',
        ' | | ', ],

      [ ' |X| ',
        ' | | ',
        ' | | ', ],

      [ ' |X| ',
        ' |O| ',
        ' | | ', ],

      [ ' |X| ',
        ' | | ',
        ' |O| ', ],

      [ ' |X| ',
        'O| | ',
        ' | | ', ],

      [ ' | | ',
        ' | |O',
        ' |X| ', ],

      [ 'X|O|X',
        'O|X|O',
        'O|X|O', ],
    ]

    it( 'does not have a winner', () => {
      inProgress.forEach( game => {
        const board = translate( game )
        expect( hasWinner( board ) ).to.be.false
      } )
    } )


  } )

  describe( 'winning a game', () => {
    const winningGames = [ {
      winner: 'X',
      plays: [
        'X| | ',
        'X| | ',
        'X| | ', ],
    }, {
      winner: 'X',
      plays: [
        ' |X| ',
        ' |X| ',
        ' |X| ', ],
    }, {
      winner: 'O',
      plays: [
        ' | |O',
        ' | |O',
        ' | |O', ],
    }, {
      winner: 'X',
      plays: [
        ' | | ',
        'X|X|X',
        ' | | ', ],
    }, {
      winner: 'O',
      plays: [
        'O|O|O',
        ' | | ',
        ' | | ', ],
    }, {
      winner: 'O',
      plays: [
        ' | | ',
        'O|O|O',
        ' | | ', ],
    }, {
      winner: 'O',
      plays: [
        ' | | ',
        ' | | ',
        'O|O|O', ],
    }, {
      winner: 'O',
      plays: [
        ' | |O',
        ' |O| ',
        'O| | ', ],
    }, {
      winner: 'X',
      plays: [
        ' | |X',
        ' |X| ',
        'X| | ', ],
    }, {
      winner: 'X',
      plays: [
        'X| | ',
        ' |X| ',
        ' | |X', ],
    }, {
      winner: 'O',
      plays: [
        'O| | ',
        ' |O| ',
        ' | |O', ],
    } ]

    winningGames.forEach( game => {
      const board = translate( game.plays )
      expect( hasWinner( board ) ).to.be.true
      expect( findWinner( board ) ).to.eq( game.winner,
        '\n' + board.join( '\n' ) + '\n' )
    } )
  } )
} )