/**
 * Mixin to handle locale.
 * @mixin ApLocaleMixin
 */

'use strict'

import React, {PropTypes as types} from 'react'
import apemanlocale from 'apemanlocale'

const LOCALE_LOCALE_KEY = '_apLocale'

/** @lends ApLocaleMixin */
let ApLocaleMixin = {

  // --------------------
  // Custom
  // --------------------
  $apLocaleMixed: true,

  /**
   * Get locales
   * @returns {object} - Locale data.
   */
  getLocale () {
    const s = this
    let locale = s[ LOCALE_LOCALE_KEY ] || s.context[ LOCALE_LOCALE_KEY ]
    if (!locale) {
      let msg = "Locale not initialized. You need to call `.registerLocale()` on this component or one of it's parents"
      throw new Error(msg)
    }
    return locale
  },

  /**
   * Register locale data.
   * @param {object} locale
   */
  registerLocale (locale) {
    const s = this
    s[ LOCALE_LOCALE_KEY ] = apemanlocale.locale(locale)
  },

  // --------------------
  // Specs
  // --------------------

  contextTypes: {
    [LOCALE_LOCALE_KEY]: types.func
  },
  childContextTypes: {
    [LOCALE_LOCALE_KEY]: types.func
  },
  getChildContext () {
    const s = this
    return {
      [LOCALE_LOCALE_KEY]: s.getLocale()
    }
  }

  // --------------------
  // Lifecycle
  // --------------------

}

export default Object.freeze(ApLocaleMixin)