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191 lines
5.5 KiB
191 lines
5.5 KiB
<?php
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namespace p3k;
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use Config;
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use DateTime, DateTimeZone;
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class Weather {
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public static function weather_for_location($lat, $lng, $key) {
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$data = self::_fetch($lat, $lng, $key);
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if(!$data) return null;
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if(!property_exists($data, 'current_observation'))
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return null;
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$current = $data->current_observation;
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$weather = [
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'description' => null,
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'icon' => [
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'url' => null,
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'name' => null
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],
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'temp' => null,
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'feelslike' => null,
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'humidity' => null,
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'wind' => null,
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'pressure' => null,
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'precip_today' => null,
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'timezone' => [
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'offset' => null,
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'name' => null,
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'abbr' => null
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]
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];
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if($current) {
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$loc = $current->display_location;
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if($loc) {
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$weather['location'] = [
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'city' => $loc->city,
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'state' => $loc->state,
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'country' => $loc->country,
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'zip' => $loc->zip
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];
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$sunny = self::_sunny($current->display_location->latitude, $current->display_location->longitude, $current->local_tz_long);
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} else {
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$sunny = ['light'=>'day'];
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}
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$icon_name = self::_icon_name($current->icon, $sunny['light']);
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$weather['sun'] = $sunny;
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$weather['description'] = $current->weather;
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$weather['icon']['url'] = $current->icon_url;
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$weather['icon']['name'] = $icon_name;
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$weather['temp'] = [
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'num' => (double)$current->temp_f,
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'unit' => '°F'
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];
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$weather['feelslike'] = [
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'num' => (double)$current->feelslike_f,
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'unit' => '°F'
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];
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$weather['wind'] = [
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'num' => $current->wind_mph,
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'unit' => 'mph'
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];
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$weather['pressure'] = [
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'num' => (int)$current->pressure_mb,
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'unit' => 'mb'
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];
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$weather['precip_today'] = [
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'num' => (double)$current->precip_today_in,
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'unit' => 'in'
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];
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$weather['humidity'] = [
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'num' => (int)str_replace('%','',$current->relative_humidity),
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'unit' => '%'
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];
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$weather['timezone']['offset'] = $current->local_tz_offset;
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$weather['timezone']['name'] = $current->local_tz_long;
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$weather['timezone']['abbr'] = $current->local_tz_short;
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}
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#$weather['raw'] = $current;
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return $weather;
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}
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private static function _fetch($lat, $lng, $key) {
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$ch = curl_init();
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curl_setopt($ch, CURLOPT_URL, 'http://api.wunderground.com/api/'.$key.'/conditions/q/'.$lat.','.$lng.'.json');
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
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// curl_setopt($ch, CURLOPT_USERAGENT, '');
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curl_setopt($ch, CURLOPT_TIMEOUT, 5);
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$result = curl_exec($ch);
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if($result == FALSE)
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return FALSE;
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return json_decode($result);
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}
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// Returns "day" or "night" depending on whether the sun is up at the given location
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private static function _sunny($lat, $lng, $timezone) {
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// Get the beginning of the current day
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$now = new DateTime();
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if(!$timezone) {
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$timezone = \p3k\Timezone::timezone_for_location($lat, $lng);
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}
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$tz = new DateTimeZone($timezone);
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$now->setTimeZone($tz);
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$offset = $now->format('Z')/3600;
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$now = $now->format('H') + ($now->format('i')/60);
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if($lat !== null) {
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$sunrise = date_sunrise($now, SUNFUNCS_RET_DOUBLE, $lat, $lng, 108, $offset);
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$sunset = date_sunset($now, SUNFUNCS_RET_DOUBLE, $lat, $lng, 108, $offset);
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return [
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'sunrise' => round($sunrise,2),
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'sunset' => round($sunset,2),
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'now' => round($now,2),
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'light' => ($sunrise < $now && $now < $sunset) ? 'day' : 'night',
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];
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} else {
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return [
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'light' => 'unknown'
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];
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}
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}
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private static function _icon_name($icon, $sunny) {
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// This list is from http://www.wunderground.com/weather/api/d/docs?d=resources/icon-sets
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// A mapping of wunderground to weather-icons is here https://erikflowers.github.io/weather-icons/api-list.html
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$map = [
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'day' => [
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'chanceflurries' => 'snow-wind',
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'chancerain' => 'day-rain',
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'chancesleet' => 'sleet',
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'chancesnow' => 'snow',
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'chancetstorms' => 'thunderstorm',
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'clear' => 'day-sunny',
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'cloudy' => 'cloudy',
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'flurries' => 'snow-wind',
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'fog' => 'day-haze',
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'hazy' => 'day-haze',
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'mostlycloudy' => 'cloud',
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'mostlysunny' => 'day-sunny-overcast',
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'partlycloudy' => 'day-cloudy',
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'partlysunny' => 'day-sunny-overcast',
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'sleet' => 'sleet',
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'rain' => 'rain',
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'snow' => 'snow',
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'sunny' => 'day-sunny',
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'tstorms' => 'thunderstorm',
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],
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'night' => [
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'chanceflurries' => 'night-snow-wind',
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'chancerain' => 'night-rain',
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'chancesleet' => 'night-alt-sleet',
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'chancesnow' => 'night-snow',
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'chancetstorms' => 'night-thunderstorm',
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'clear' => 'night-clear',
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'cloudy' => 'cloudy',
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'flurries' => 'night-alt-snow-wind',
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'fog' => 'night-fog',
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'hazy' => 'night-fog',
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'mostlycloudy' => 'night-alt-cloudy',
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'mostlysunny' => 'night-clear',
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'partlycloudy' => 'night-alt-partly-cloudy',
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'partlysunny' => 'night-alt-partly-cloudy',
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'sleet' => 'night-alt-sleet',
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'rain' => 'night-alt-showers',
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'snow' => 'night-alt-snow',
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'sunny' => 'night-clear',
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'tstorms' => 'night-alt-thunderstorm',
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]
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];
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if(array_key_exists($icon, $map[$sunny])) {
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return 'wi-'.$map[$sunny][$icon];
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} else {
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return false;
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}
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}
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}
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