phpvms/app/Services/AirportService.php
Nabeel S bbec276da8
#355 Calculate distance button (#366)
* #355 Calculate distance button in add/edit Flight page

* Styling

* Move add/edit flight logic out of controller and into service layer

* Styling

* Formatting

* Run styleci against modules dir

* Styleci config

* Style fixes in /modules
2019-08-26 12:32:46 -04:00

128 lines
3.1 KiB
PHP

<?php
namespace App\Services;
use App\Contracts\AirportLookup as AirportLookupProvider;
use App\Contracts\Metar as MetarProvider;
use App\Contracts\Service;
use App\Exceptions\AirportNotFound;
use App\Repositories\AirportRepository;
use App\Support\Metar;
use App\Support\Units\Distance;
use Illuminate\Support\Facades\Cache;
use League\Geotools\Coordinate\Coordinate;
use League\Geotools\Geotools;
use PhpUnitsOfMeasure\Exception\NonNumericValue;
use PhpUnitsOfMeasure\Exception\NonStringUnitName;
use VaCentral\Airport;
/**
* Class AnalyticsService
*/
class AirportService extends Service
{
private $airportRepo;
private $lookupProvider;
private $metarProvider;
public function __construct(
AirportLookupProvider $lookupProvider,
AirportRepository $airportRepo,
MetarProvider $metarProvider
) {
$this->airportRepo = $airportRepo;
$this->lookupProvider = $lookupProvider;
$this->metarProvider = $metarProvider;
}
/**
* Return the METAR for a given airport
*
* @param $icao
*
* @return Metar|null
*/
public function getMetar($icao)
{
$icao = trim($icao);
if ($icao === '') {
return;
}
$raw_metar = $this->metarProvider->get_metar($icao);
if ($raw_metar && $raw_metar !== '') {
return new Metar($raw_metar);
}
}
/**
* Lookup an airport's information from a remote provider. This handles caching
* the data internally
*
* @param string $icao ICAO
*
* @return Airport|array
*/
public function lookupAirport($icao)
{
$key = config('cache.keys.AIRPORT_VACENTRAL_LOOKUP.key').$icao;
$airport = Cache::get($key);
if ($airport) {
return $airport;
}
$airport = $this->lookupProvider->getAirport($icao);
if ($airport === null) {
return [];
}
Cache::add(
$key,
$airport,
config('cache.keys.AIRPORT_VACENTRAL_LOOKUP.time')
);
return $airport;
}
/**
* Calculate the distance from one airport to another
*
* @param string $fromIcao
* @param string $toIcao
*
* @return Distance
*/
public function calculateDistance($fromIcao, $toIcao)
{
$from = $this->airportRepo->find($fromIcao, ['lat', 'lon']);
$to = $this->airportRepo->find($toIcao, ['lat', 'lon']);
if (!$from) {
throw new AirportNotFound($fromIcao);
}
if (!$to) {
throw new AirportNotFound($toIcao);
}
// Calculate the distance
$geotools = new Geotools();
$start = new Coordinate([$from->lat, $from->lon]);
$end = new Coordinate([$to->lat, $to->lon]);
$dist = $geotools->distance()->setFrom($start)->setTo($end);
// Convert into a Distance object
try {
$distance = new Distance($dist->in('mi')->greatCircle(), 'mi');
return $distance;
} catch (NonNumericValue $e) {
return;
} catch (NonStringUnitName $e) {
return;
}
}
}