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Edit File: DelegatesResource.php

<?php

namespace App\Http\Resources;

use Illuminate\Http\Resources\Json\JsonResource;

class DelegatesResource extends JsonResource
{
    public static function directDistance($latitudeFrom, $longitudeFrom, $latitudeTo, $longitudeTo)
    {
        $earthRadius = 6371000;
        // convert from degrees to radians
        $latFrom = deg2rad($latitudeFrom);
        $lonFrom = deg2rad($longitudeFrom);
        $latTo = deg2rad($latitudeTo);
        $lonTo = deg2rad($longitudeTo);

$lonDelta = $lonTo - $lonFrom;
        $a = pow(cos($latTo) * sin($lonDelta), 2) + pow(cos($latFrom) * sin($latTo) - sin($latFrom) * cos($latTo) * cos($lonDelta), 2);
        $b = sin($latFrom) * sin($latTo) + cos($latFrom) * cos($latTo) * cos($lonDelta);
        $angle = atan2(sqrt($a), $b);
        $in_km = ($angle * $earthRadius) / 1000;
        $in_km += (40 / 100) * $in_km;
        $in_km = number_format((float)$in_km, 2, '.', '');
        return $in_km;
    }

public function toArray($request)
    {
        $distance = static::directDistance($request['receive_lat'], $request['receive_long'], $this->lat, $this->lng);
        return [
            'id' => $this->id,
            'lat' => $this->lat ?? '',
            'long' => $this->long ?? '',
            'address' => $this->address ?? '',
            'distance' => $distance,
            'estimate_time' => $distance * 1.2,
        ];
    }
}

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