<?php

namespace CorpusParole\Http\Controllers\Api;

use Illuminate\Http\Request;

use CorpusParole\Http\Requests;

use CorpusParole\Http\Controllers\Controller;

use Es;

use Log;

class GeoStatsController extends Controller

{

    /**

     * Display the specified resource.

     *

     * @return \Illuminate\Http\Response

     */

    public function index(Request $request)

    {

        $area = $request->input('area');

        $filter = [

            'match_all' => []

        ];

        if(!is_null($area) && $area !== config('corpusparole.geonames_earth_geonamesid')) {

            $filter = [

                'term' => [

                    "geonames_hierarchy" => $area

                ]

            ];

        }

        $query = [

            'index' => env('ELASTICSEARCH_INDEX'),

            'body' => [

                "size" => 0,

                "query" => $filter,

                "aggs" => [

                    "geos" => [

                        "terms" => [

                            "size" => 0,

                            "field" => "geonames_hierarchy"

                        ]

                    ]

                ]

            ]

        ];

        $esRes = Es::search($query);

        $geosats = [];

        foreach($esRes['aggregations']['geos']['buckets'] as $bucket) {

            $geosats[(string)($bucket['key'])] = $bucket['doc_count'];

        }

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

    }

}