52 lines
1.4 KiB
PHP
52 lines
1.4 KiB
PHP
<?php
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namespace App\Services\Metar;
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use App\Contracts\Metar;
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use App\Support\Http;
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use Illuminate\Support\Facades\Cache;
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use Illuminate\Support\Facades\Log;
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/**
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* Return the raw METAR string from the NOAA Aviation Weather Service
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*/
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class AviationWeather extends Metar
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{
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private const METAR_URL =
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'https://www.aviationweather.gov/adds/dataserver_current/httpparam?'
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.'dataSource=metars&requestType=retrieve&format=xml&hoursBeforeNow=3'
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.'&mostRecent=true&fields=raw_text&stationString=';
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/**
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* Implement the METAR - Return the string
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*
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* @param $icao
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*
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* @return string
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*/
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protected function metar($icao): string
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{
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$metar = Cache::remember(
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config('cache.keys.WEATHER_LOOKUP.key').$icao,
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config('cache.keys.WEATHER_LOOKUP.time'),
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function () use ($icao) {
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$url = static::METAR_URL.$icao;
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try {
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$res = Http::get($url, []);
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$xml = simplexml_load_string($res);
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if (\count($xml->data->METAR->raw_text) === 0) {
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return '';
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}
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return $xml->data->METAR->raw_text->__toString();
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} catch (\Exception $e) {
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Log::error('Error reading METAR: '.$e->getMessage());
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return '';
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}
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}
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);
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return $metar;
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}
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}
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