@zohodesk/hooks/es/accordion/reducer.js

Unified Component Library - Hooks

import * as CONST from "./constants";
/**
 @module accordion/reducer
*/

/**
 * accordion reducer description
 * @function accordionReducer
 * @param {Array<boolean>} state - previous state
 * @param {object} action - action object
 * @param {string} action.type
 * @param {object} action.data
 * @returns {Array<boolean>}
 */

export default function reducer() {
  let state = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
  let {
    type,
    data
  } = arguments.length > 1 ? arguments[1] : undefined;

  switch (type) {
    case CONST.OPEN:
      {
        const newState = state.slice();
        newState[data.index] = true;
        return newState;
      }

    case CONST.CLOSE:
      {
        const newState = state.slice();
        newState[data.index] = false;
        return newState;
      }

    case CONST.TOGGLE:
      {
        const newState = state.slice();
        newState[data.index] = !newState[data.index];
        return newState;
      }

    case CONST.RESET:
      {
        return data;
      }

    default:
      {
        return state;
      }
  }
}