/**
 * ArrowKeys.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

import { PlatformDetection } from '@ephox/sand';
import BoundarySelection from './BoundarySelection';
import * as CefNavigation from './CefNavigation';
import * as TableNavigation from './TableNavigation';
import MatchKeys from './MatchKeys';
import VK from '../api/util/VK';
import { Editor } from 'tinymce/core/api/Editor';
import { Cell } from '@ephox/katamari';

const executeKeydownOverride = function (editor: Editor, caret: Cell<Text>, evt: KeyboardEvent) {
  const os = PlatformDetection.detect().os;

  MatchKeys.execute([
    { keyCode: VK.RIGHT, action: CefNavigation.moveH(editor, true) },
    { keyCode: VK.LEFT, action: CefNavigation.moveH(editor, false) },
    { keyCode: VK.UP, action: CefNavigation.moveV(editor, false) },
    { keyCode: VK.DOWN, action: CefNavigation.moveV(editor, true) },
    { keyCode: VK.RIGHT, action: TableNavigation.moveH(editor, true) },
    { keyCode: VK.LEFT, action: TableNavigation.moveH(editor, false) },
    { keyCode: VK.UP, action: TableNavigation.moveV(editor, false) },
    { keyCode: VK.DOWN, action: TableNavigation.moveV(editor, true) },
    { keyCode: VK.RIGHT, action: BoundarySelection.move(editor, caret, true) },
    { keyCode: VK.LEFT, action: BoundarySelection.move(editor, caret, false) },
    { keyCode: VK.RIGHT, ctrlKey: !os.isOSX(), altKey: os.isOSX(), action: BoundarySelection.moveNextWord(editor, caret) },
    { keyCode: VK.LEFT, ctrlKey: !os.isOSX(), altKey: os.isOSX(), action: BoundarySelection.movePrevWord(editor, caret) }
  ], evt).each(function (_) {
    evt.preventDefault();
  });
};

const setup = function (editor: Editor, caret: Cell<Text>) {
  editor.on('keydown', function (evt) {
    if (evt.isDefaultPrevented() === false) {
      executeKeydownOverride(editor, caret, evt);
    }
  });
};

export default {
  setup
};