const util = require('../util');
const assert = require('../assert');
const arrow = util.arrow;

const imgUrl = util.assetUrl + 'images/learn/spinning-blades.svg';

module.exports = {
  key: 'enpassant',
  title: 'enPassant',
  subtitle: 'theSpecialPawnMove',
  image: imgUrl,
  intro: 'enPassantIntro',
  illustration: util.roundSvg(imgUrl),
  levels: [
    {
      goal: 'blackJustMovedThePawnByTwoSquares',
      fen: 'rnbqkbnr/pppppppp/8/2P5/8/8/PP1PPPPP/RNBQKBNR b KQkq -',
      color: 'white',
      nbMoves: 1,
      success: assert.scenarioComplete,
      failure: assert.scenarioFailed,
      detectCapture: false,
      scenario: [
        {
          move: 'd7d5',
          shapes: [arrow('c5d6')],
        },
        'c5d6',
      ],
      captures: 1,
    },
    {
      goal: 'enPassantOnlyWorksImmediately',
      fen: 'rnbqkbnr/ppp1pppp/8/2Pp3P/8/8/PP1PPPP1/RNBQKBNR b KQkq -',
      color: 'white',
      nbMoves: 1,
      success: assert.scenarioComplete,
      failure: assert.scenarioFailed,
      detectCapture: false,
      scenario: [
        {
          move: 'g7g5',
          shapes: [arrow('h5g6'), arrow('c5d6', 'red')],
        },
        'h5g6',
      ],
      captures: 1,
    },
    {
      goal: 'enPassantOnlyWorksOnFifthRank',
      fen: 'rnbqkbnr/pppppppp/P7/2P5/8/8/PP1PPPP1/RNBQKBNR b KQkq -',
      color: 'white',
      nbMoves: 1,
      success: assert.scenarioComplete,
      failure: assert.scenarioFailed,
      detectCapture: false,
      scenario: [
        {
          move: 'b7b5',
          shapes: [arrow('c5b6'), arrow('a6b7', 'red')],
        },
        'c5b6',
      ],
      captures: 1,
      cssClass: 'highlight-5th-rank',
    },
    {
      goal: 'takeAllThePawnsEnPassant',
      fen: 'rnbqkbnr/pppppppp/8/2PPP2P/8/8/PP1P1PP1/RNBQKBNR b KQkq -',
      color: 'white',
      nbMoves: 4,
      detectCapture: false,
      success: assert.scenarioComplete,
      failure: assert.scenarioFailed,
      scenario: ['b7b5', 'c5b6', 'f7f5', 'e5f6', 'c7c5', 'd5c6', 'g7g5', 'h5g6'],
      captures: 4,
    },
  ].map(util.toLevel),
  complete: 'enPassantComplete',
};