wikidata-jskos/lib/queries/get-concepts.js

Access Wikidata in JSKOS format

import wdk from "../wdk.js"
import { selectedLanguages } from "../utils.js"
import { detectWikidataConcepts } from "../utils.js"
import { httpRequest } from "../request.js"
import getBacklinks from "./get-backlinks.js"
import { mapEntity } from "../mappers.js"

export default async function getConcepts (query) {
  const concepts = detectWikidataConcepts(query.uri)
  if (!concepts.length) {
    return []
  }

  const languages = selectedLanguages(query)
  const props = ["info", "sitelinks", "labels", "aliases", "descriptions", "claims"]
  const url = wdk.getEntities({
    ids: concepts.map(concept => concept.notation[0]),
    languages,
    props,
  })

  return httpRequest(url)
    .then(res => res.entities || {})
    .then(entities => Object.values(entities).filter(e => !("missing" in e)))
    .then(entities => entities.map(mapEntity))
    .then(entities => {
      if (!entities.length) {
        return []
      }
      const index = {}
      entities.forEach(e => {
        index[e.uri] = e
      })
      const rels = ["P361", "P31", "P279", "P131"]
      return getBacklinks(Object.keys(index), languages, rels)
        .then(backlinks => {
          backlinks.forEach(bl => {
            const entity = index[bl[0]]
            if (entity) {
              entity.narrower = entity.narrower || []
              entity.narrower.push(bl[1])
            }
          })
          // TODO: add backlinks
          return Object.values(index)
        })
    })
}