hexo-theme-shoka/scripts/generaters/index.js

'use strict';

const fs = require('hexo-fs');
const pagination = require('hexo-pagination');

hexo.config.index_generator = Object.assign({
  per_page: typeof hexo.config.per_page === 'undefined' ? 10 : hexo.config.per_page,
  order_by: '-date'
}, hexo.config.index_generator);

hexo.extend.generator.register('index', function(locals) {
  let covers = [];
  let catlist = [];
  let pages = [];
  const config = this.config;
  const theme = this.theme.config;
  const sticky = locals.posts.find({'sticky': true}).sort(config.index_generator.order_by);
  const posts = locals.posts.find({'sticky': {$exists: false}}).sort(config.index_generator.order_by);
  const paginationDir = config.pagination_dir || 'page';
  const path = config.index_generator.path || '';
  const categories = locals.categories;

  var getTopcat = function(cat) {
    if (cat.parent) {
      var pCat = categories.findOne({'_id': cat.parent})
      return getTopcat(pCat);
    } else {
      return cat
    }
  }

  if (categories && categories.length) {
    categories.forEach((cat) => {
      let cover = 'source/_posts/' + cat.slug + '/cover.jpg'

      if (fs.existsSync(cover)) {
        covers.push({
          path: cat.slug + '/cover.jpg',
          data: function () {
            return fs.createReadStream(cover)
          }
        });

        let topcat = getTopcat(cat)

        if (topcat._id != cat._id) {
          cat.top = topcat;
        }

        let child = categories.find({'parent': cat._id});
        if (child.length != 0) {
          cat.child = child;
        }

        catlist.push(cat)
      }
    });
  }

  if(posts.length > 0) {
    pages = pagination(path, posts, {
      perPage: config.index_generator.per_page,
      layout: ['index', 'archive'],
      format: paginationDir + '/%d/',
      data: {
        __index: true,
        catlist: catlist,
        sticky: sticky
      }
    });
  } else {
    pages = [{
        path,
        layout: ['index', 'archive'],
        data: {
          __index: true,
          catlist: catlist,
          sticky: sticky
        }
      }];
  }

  return [...covers, ...pages];

});