// Query wikidata with axios
const axios = require("axios");

function query(sparqlQuery) {
    const endpoint = 'https://query.wikidata.org/sparql';
    const fullUrl = endpoint + '?query=' + encodeURIComponent( sparqlQuery );
    const headers = { 'Accept': 'application/sparql-results+json' };
    return axios.get(fullUrl, { headers }).then( body => body.data );
}

function encodeSparqlQuery(species) {
    let sparqlTemplate = `#defaultView:ImageGrid
    SELECT ?item ?itemLabel ?pic
    WHERE
    {
    ?item wdt:P225 "${species}" .
    ?item wdt:P18 ?pic
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en" }
    }`
    return sparqlTemplate;
}


function getPictures(species) {
    return query(encodeSparqlQuery(species));
} 

getPictures("Picus viridis").then((data) => console.log(data.results.bindings));