<?php

namespace CorpusParole\Http\Controllers\Api;

// use Illuminate\Http\Request;

// use CorpusParole\Http\Requests;

use CorpusParole\Http\Controllers\Controller;

use CorpusParole\Libraries\Sparql\SparqlClient;

class LanguageController extends Controller

{

    private $sparqlClient = null;

    public function __construct(SparqlClient $sparqlClient) {

        $this->sparqlClient = $sparqlClient;

    }

    /**

     * Display the specified resource.

     *

     * @return \Illuminate\Http\Response

     */

    public function index()

    {

        $query = "select ?lang (count(?lang) as ?count) where {

            ?s a <http://www.europeana.eu/schemas/edm/ProvidedCHO>.

            ?s <http://purl.org/dc/elements/1.1/language> ?lang

        }

        GROUP BY ?lang

        ORDER BY DESC(?count)";

        $docs = $this->sparqlClient->query($query);

        $languages = [];

        foreach ($docs as $row) {

            $languages[$row->lang->getUri()] = $row->count->getValue();

        }

        return response()->json(['languages' => $languages ]);

    }

}