@leofavre/memory-game-component/dist/es/es5/state/memoryGameReducer.js

A memory game web component.

function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread(); }

function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance"); }

function _iterableToArray(iter) { if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter); }

function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

import { INITIAL_STATE, DISTRIBUTE_CARDS, REVEAL_CARD, MATCH_CARDS, HIDE_CARDS, ALLOW_INTERACTION, DISALLOW_INTERACTION, SEND_EVENT } from './memoryGameConstants.js';
export default (function () {
  var state = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : INITIAL_STATE;
  var action = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

  switch (action.type) {
    case DISTRIBUTE_CARDS:
      var cards = action.cards,
          positions = action.positions;
      var nextCards = cards.map(function (card, index) {
        return _objectSpread({}, card, {
          positions: positions.slice(index * 2, index * 2 + 2)
        });
      });
      return _objectSpread({}, state, {
        cards: nextCards
      });

    case REVEAL_CARD:
      return _objectSpread({}, state, {
        revealed: _toConsumableArray(state.revealed).concat([action.position])
      });

    case MATCH_CARDS:
      var nextMatched = _toConsumableArray(state.matched).concat(_toConsumableArray(state.cards.reduce(function (result, card) {
        return _toConsumableArray(result).concat(_toConsumableArray(card.positions.every(function (position) {
          return state.revealed.includes(position);
        }) ? card.positions : []));
      }, [])));

      return _objectSpread({}, state, {
        matched: nextMatched
      });

    case HIDE_CARDS:
      return _objectSpread({}, state, {
        revealed: []
      });

    case ALLOW_INTERACTION:
      return _objectSpread({}, state, {
        isInteractive: true
      });

    case DISALLOW_INTERACTION:
      return _objectSpread({}, state, {
        isInteractive: false
      });

    case SEND_EVENT:
      var event = action.detail != null ? {
        name: action.name,
        detail: action.detail
      } : {
        name: action.name
      };
      return _objectSpread({}, state, {
        events: _toConsumableArray(state.events).concat([event])
      });

    default:
      return state;
  }
});