@europeana/portal/src/cachers/items/recent.js

Europeana Portal

const PICK = ['dataProvider', 'dcCreatorLangAware', 'dcTitleLangAware', 'edmPreview', 'id'];
// TODO: We can't let the cacher localise in advance because the item preview card
// expects to handle it. Consider refactoring that automated card group to
// use generic content card directly?
// const LOCALISE = ['dcCreatorLangAware', 'dcTitleLangAware'];
const LOCALISE = false;

import dateFormat from 'dateformat';
import { createEuropeanaApiClient } from '../utils.js';

let axiosClient;
let randomSortSeed;

const recentlyUpdatedContentTier4Dataset = async(exclude = []) => {
  let query = '*:*';
  if (exclude.length > 0) {
    const excludedDatasets = exclude.map(e => `"${e}"`).join(' OR ');
    query = `NOT edm_datasetName:(${excludedDatasets})`;
  }

  const response = await axiosClient.get('/search.json', {
    params: {
      profile: 'standard',
      query,
      qf: 'contentTier:4',
      rows: 1,
      sort: 'timestamp_update+desc'
    }
  });
  return response.data.items?.[0]?.edmDatasetName;
};

const recentlyUpdatedContentTier4ItemFromDataset = async(dataset) => {
  const query = `edm_datasetName:"${dataset}"`;
  const params = {
    profile: 'minimal',
    query,
    qf: 'contentTier:4',
    rows: 1,
    sort: `timestamp_update+desc,random_${randomSortSeed}+asc`
  };
  const response = await axiosClient.get('/search.json', { params });
  return response.data.items[0];
};

const recentlyUpdatedContentTier4Items = async() => {
  const datasets = [];
  const items = [];
  let moreDatasets = true;

  while (moreDatasets && (items.length < 4)) {
    const dataset = await recentlyUpdatedContentTier4Dataset(datasets);
    if (dataset) {
      datasets.push(dataset);

      const item = await recentlyUpdatedContentTier4ItemFromDataset(dataset);
      items.push(item);
    } else {
      moreDatasets = false;
    }
  }

  return items;
};

const data = (config = {}) => {
  axiosClient = createEuropeanaApiClient(config.europeana?.apis?.record);
  randomSortSeed = dateFormat(new Date(), 'isoDate');

  return recentlyUpdatedContentTier4Items();
};

export {
  data,
  LOCALISE,
  PICK
};