import { Extension } from 'tiptap'
import { history, undo, redo } from 'prosemirror-history'

export default class History extends Extension {

  get name() {
    return 'history'
  }

  keys() {
    const isMac = typeof navigator !== 'undefined' ? /Mac/.test(navigator.platform) : false
    const keymap = {
      'Mod-z': undo,
      'Shift-Mod-z': redo,
    }

    if (!isMac) {
      keymap['Mod-y'] = redo
    }

    return keymap
  }

  get plugins() {
    return [
      history(),
    ]
  }

  commands() {
    return {
      undo: () => undo,
      redo: () => redo,
    }
  }

}