/* global hexo */

'use strict';

const keys = ['toc', 'reward_settings', 'quicklink'];

hexo.extend.filter.register('template_locals', locals => {
  const { version, config } = hexo;
  const { __, theme, page } = locals;
  const { i18n } = hexo.theme;
  // Hexo & NexT version
  locals.hexo_version = version;
  locals.next_version = require('../../package.json').version;
  // Language & Config
  locals.title = __('title') !== 'title' ? __('title') : config.title;
  locals.subtitle = __('subtitle') !== 'subtitle' ? __('subtitle') : config.subtitle;
  locals.author = __('author') !== 'author' ? __('author') : config.author;
  locals.description = __('description') !== 'description' ? __('description') : config.description;
  locals.languages = [...i18n.languages];
  locals.languages.splice(locals.languages.indexOf('default'), 1);
  // See https://github.com/hexojs/hexo/pull/4614
  page.lang = page.lang || page.language;
  // Creative Commons
  locals.ccURL = 'https://creativecommons.org/' + (theme.creative_commons.license === 'zero' ? 'publicdomain/zero/1.0/' : 'licenses/' + theme.creative_commons.license + '/4.0/') + (theme.creative_commons.language || '');
  // PJAX
  locals.pjax = theme.pjax ? ' data-pjax' : '';
  // Front-matter
  keys.forEach(key => {
    page[key] = { ...theme[key], ...page[key] };
  });
  // Set home or archive quicklink
  if (page.__index) {
    page.quicklink.enable = theme.quicklink.home;
  }
  if (page.archive) {
    page.quicklink.enable = theme.quicklink.archive;
  }
});