import {objectEach} from './../../helpers/object';
import alignmentItem, {KEY as ALIGNMENT} from './predefinedItems/alignment';
import clearColumnItem, {KEY as CLEAR_COLUMN} from './predefinedItems/clearColumn';
import columnLeftItem, {KEY as COLUMN_LEFT} from './predefinedItems/columnLeft';
import columnRightItem, {KEY as COLUMN_RIGHT} from './predefinedItems/columnRight';
import readOnlyItem, {KEY as READ_ONLY} from './predefinedItems/readOnly';
import redoItem, {KEY as REDO} from './predefinedItems/redo';
import removeColumnItem, {KEY as REMOVE_COLUMN} from './predefinedItems/removeColumn';
import removeRowItem, {KEY as REMOVE_ROW} from './predefinedItems/removeRow';
import rowAboveItem, {KEY as ROW_ABOVE} from './predefinedItems/rowAbove';
import rowBelowItem, {KEY as ROW_BELOW} from './predefinedItems/rowBelow';
import separatorItem, {KEY as SEPARATOR} from './predefinedItems/separator';
import undoItem, {KEY as UNDO} from './predefinedItems/undo';

export {KEY as ALIGNMENT} from './predefinedItems/alignment';
export {KEY as CLEAR_COLUMN} from './predefinedItems/clearColumn';
export {KEY as COLUMN_LEFT} from './predefinedItems/columnLeft';
export {KEY as COLUMN_RIGHT} from './predefinedItems/columnRight';
export {KEY as READ_ONLY} from './predefinedItems/readOnly';
export {KEY as REDO} from './predefinedItems/redo';
export {KEY as REMOVE_COLUMN} from './predefinedItems/removeColumn';
export {KEY as REMOVE_ROW} from './predefinedItems/removeRow';
export {KEY as ROW_ABOVE} from './predefinedItems/rowAbove';
export {KEY as ROW_BELOW} from './predefinedItems/rowBelow';
export {KEY as SEPARATOR} from './predefinedItems/separator';
export {KEY as UNDO} from './predefinedItems/undo';

export const ITEMS = [
  ROW_ABOVE, ROW_BELOW, COLUMN_LEFT, COLUMN_RIGHT, CLEAR_COLUMN, REMOVE_ROW, REMOVE_COLUMN, UNDO, REDO, READ_ONLY,
  ALIGNMENT, SEPARATOR
];

const _predefinedItems = {
  [SEPARATOR]: separatorItem,
  [ROW_ABOVE]: rowAboveItem,
  [ROW_BELOW]: rowBelowItem,
  [COLUMN_LEFT]: columnLeftItem,
  [COLUMN_RIGHT]: columnRightItem,
  [CLEAR_COLUMN]: clearColumnItem,
  [REMOVE_ROW]: removeRowItem,
  [REMOVE_COLUMN]: removeColumnItem,
  [UNDO]: undoItem,
  [REDO]: redoItem,
  [READ_ONLY]: readOnlyItem,
  [ALIGNMENT]: alignmentItem,
};

/**
 * Gets new object with all predefined menu items.
 *
 * @returns {Object}
 */
export function predefinedItems() {
  const items = {};

  objectEach(_predefinedItems, (itemFactory, key) => {
    items[key] = itemFactory();
  });

  return items;
}

/**
 * Add new predefined menu item to the collection.
 *
 * @param {String} key Menu command id.
 * @param {Object} item Object command descriptor.
 */
export function addItem(key, item) {
  if (ITEMS.indexOf(key) === -1) {
    _predefinedItems[key] = item;
  }
}