@citation-js/plugin-quickstatements/lib/cache.js

Plugin that takes citation-js input and output QuickStatements.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.fillCaches = fillCaches;
exports.getOrcid = getOrcid;
var _core = require("@citation-js/core");
var _wikidataSdk = _interopRequireDefault(require("wikidata-sdk"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const QUERY_BUILDERS = {
  issn: {
    value: '?value wdt:P236 ?key',
    key: items => items.map(item => item.ISSN)
  },
  orcid: {
    value: '?value wdt:P496 ?key',
    key: items => items.flatMap(item => (item.author || []).map(getOrcid))
  },
  language: {
    value: '?value wdt:P218 ?key',
    key: items => items.map(item => item.language)
  },
  languageWiki: {
    value: '?value ^wdt:P424/wdt:P218 ?key',
    key: items => items.map(item => item.language)
  }
};
function unique(array) {
  return array.filter((value, index, array) => array.indexOf(value) === index);
}
function buildQuery(type, items) {
  const {
    key,
    value
  } = QUERY_BUILDERS[type];
  const keys = '"' + unique(key(items)).join('" "') + '"';
  return `{ VALUES ?key { ${keys} } . ${value} . BIND("${type}" AS ?cache) }`;
}
function getOrcid(author) {
  const orcid = author._orcid || author.ORCID || author._ORCID || author.orcid;
  return orcid && orcid.replace(/^https?:\/\/orcid\.org\//, '');
}
function fillCaches(csl) {
  const caches = {};
  for (const cache in QUERY_BUILDERS) {
    caches[cache] = {};
  }
  const queries = Object.keys(QUERY_BUILDERS).map(type => buildQuery(type, csl)).join(' UNION ');
  const query = `SELECT ?key ?value ?cache WHERE { ${queries} }`;
  try {
    const url = _wikidataSdk.default.sparqlQuery(query);
    const response = JSON.parse(_core.util.fetchFile(url));
    const results = _wikidataSdk.default.simplify.sparqlResults(response);
    for (const {
      key,
      value,
      cache
    } of results) {
      caches[cache][key] = value;
    }
  } catch (e) {
    _core.logger.error(e);
  }
  return caches;
}