<?php


namespace app\services;


use app\models\ExplorerObjects;
use app\models\UserPublic;

class GeoService
{

    public static function getNearestObjects($latitude, $longitude, $DISTANCE_KILOMETERS = 600, $table = 'tour_objects')
    {

        $lg = \Yii::$app->language;

        $sql_distance = "(((acos(sin((" . $latitude . "*pi()/180)) * sin((`latitude`*pi()/180))+cos((" . $latitude . "*pi()/180)) * cos((`latitude`*pi()/180)) * cos(((" . $longitude . "-`longitude`)*pi()/180))))*180/pi())*60*1.1515*1.609344) as distance ";
        $having = " HAVING (distance <= $DISTANCE_KILOMETERS)";
        $order_by = 'ORDER BY distance ASC';
        $sql = "SELECT *, $sql_distance FROM $table $having $order_by";
        $res = \Yii::$app->db->createCommand($sql);
        $result = $res->queryAll();

        $resultArray = [];
        $bindData = [];
        $ids = [];
        foreach ($result as $r) {
            $resultArray[] = [
                'id' => $r['id'],
                'dist' => $r['distance'],
                'latitude' => $r['latitude'],
                'longitude' => $r['longitude']
            ];

            $bindData['id_'. $r['id']] = [
                'id' => $r['id'],
                'dist' => $r['distance'],
                'latitude' => $r['latitude'],
                'longitude' => $r['longitude'],
                'name' => $r['name'],
                'name_en' => $r['name_en']
            ];

            $ids[] = $r['id'];
        }
        return ['data' => $resultArray, 'bindData' => $bindData, 'ids' => $ids];
    }

    public static function orderList($nearest) {
        $ids = $nearest['ids'];
        $exploreObjectList = ExplorerObjects::find()->where(['IN','tour_object_id', $ids])->all();
        $exploreObjectListBuffer = [];
        foreach ($exploreObjectList as $explorerObject) {
            $exploreObjectListBuffer[$explorerObject->tour_object_id] = $explorerObject;
        }

        $lang = \Yii::$app->language;

        $data = [];
        $explorerObjectIds = [];

        $pointSystemActive = false;
        if(!empty($_GET['tn'])) {
            $user = Auth::getUserByToken($_GET['tn']);
            if($user && $user->club_card) {
                $pointSystemActive = true;
                $explorerObjectIds = $user->getExplorerObjectsIds();
            }
        }

        foreach ($nearest['bindData'] as $key => $objectBuffer) {
            if(isset($exploreObjectListBuffer[$objectBuffer['id']])) {
                $object = $exploreObjectListBuffer[$objectBuffer['id']];
                $dist = number_format($objectBuffer['dist'], 1, '.', '');

                $dec = explode('.', $dist);

                $dist = $dec[1] == '0' ? $dec[0] : $dist;
                $data[] = [
                    'id' => $object->id,
                    'name' => $lang == 'en' ? $object->tourObject->name_en : $object->tourObject->name,
                    'points' => $object->points,
                    'img' => $object->getSrcOfSingleImage('explorer_object_image', '1:1'),
                    'distance' => $dist,
                    'can_visit' => $dist < 1,
                    'visited' => in_array($object->id, $explorerObjectIds),
                    'point_system' => $pointSystemActive,
                    'latitude' => $object->tourObject->latitude,
                    'longitude' => $object->tourObject->longitude
                ];
            }
        }
        return $data;
    }

}