gnu-social/plugins/Irc/extlib/phergie/Phergie/Plugin/Weather.php

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<?php
/**
* Phergie
*
* PHP version 5
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.
* It is also available through the world-wide-web at this URL:
* http://phergie.org/license
*
* @category Phergie
* @package Phergie_Plugin_Weather
* @author Phergie Development Team <team@phergie.org>
* @copyright 2008-2010 Phergie Development Team (http://phergie.org)
* @license http://phergie.org/license New BSD License
* @link http://pear.phergie.org/package/Phergie_Plugin_Weather
*/
/**
* Detects and responds to requests for current weather conditions in a
* particular location using data from a web service. Requires registering
* with weather.com to obtain authentication credentials, which must be
* stored in the configuration settings weather.partner_id and
* weather.license_key for the plugin to function.
*
* @category Phergie
* @package Phergie_Plugin_Weather
* @author Phergie Development Team <team@phergie.org>
* @license http://phergie.org/license New BSD License
* @link http://pear.phergie.org/package/Phergie_Plugin_Weather
* @link http://www.weather.com/services/xmloap.html
* @uses Phergie_Plugin_Command pear.phergie.org
* @uses Phergie_Plugin_Http pear.phergie.org
* @uses extension SimpleXML
*/
class Phergie_Plugin_Weather extends Phergie_Plugin_Abstract
{
/**
* Checks for dependencies.
*
* @return void
*/
public function onLoad()
{
$plugins = $this->getPluginHandler();
$plugins->getPlugin('Command');
$plugins->getPlugin('Http');
if (empty($this->config['weather.partner_id'])
|| empty($this->config['weather.license_key'])) {
$this->fail('weather.partner_id and weather.license_key must be specified');
}
}
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/**
* Converts a temperature in Celsius to Fahrenheit.
*
* @param int $temp Temperature in Celsius
*
* @return int Temperature converted to Fahrenheit
*/
public function convertCelsiusToFahrenheit($temp)
{
return round(((((int) $temp * 9) / 5) + 32));
}
/**
* Converts a temperature in Fahrenheit to Celsius.
*
* @param int $temp Temperature in Fahrenheit
*
* @return int Temperature converted to Celsius
*/
public function convertFahrenheitToCelsius($temp)
{
return round(((((int) $temp - 32) * 5) / 9));
}
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/**
* Returns a weather report for a specified location.
*
* @param string $location Zip code or city/state/country specification
*
* @return void
*/
public function onCommandWeather($location)
{
$response = $this->plugins->http->get(
'http://xoap.weather.com/search/search',
array('where' => $location)
);
if ($response->isError()) {
$this->doNotice(
$this->event->getNick(),
'ERROR: ' . $response->getCode() . ' ' . $response->getMessage()
);
return;
}
$nick = $this->event->getNick();
$xml = $response->getContent();
if (count($xml->loc) == 0) {
$this->doNotice($nick, 'No results for that location.');
return;
}
$where = (string) $xml->loc[0]['id'];
$response = $this->plugins->http->get(
'http://xoap.weather.com/weather/local/' . $where,
array(
'cc' => '*',
'link' => 'xoap',
'prod' => 'xoap',
'par' => $this->config['weather.partner_id'],
'key' => $this->config['weather.license_key'],
)
);
if ($response->isError()) {
$this->doNotice(
$this->event->getNick(),
'ERROR: ' . $response->getCode() . ' ' . $response->getMessage()
);
return;
}
$xml = $response->getContent();
$weather = 'Weather for ' . (string) $xml->loc->dnam . ' - ';
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switch ($xml->head->ut) {
case 'F':
$tempF = $xml->cc->tmp;
$tempC = $this->convertFahrenheitToCelsius($tempF);
break;
case 'C':
$tempC = $xml->cc->tmp;
$tempF = $this->convertCelsiusToFahrenheit($tempC);
break;
default:
$this->doNotice(
$this->event->getNick(),
'ERROR: No scale information given.');
break;
}
$r = $xml->cc->hmid;
$tempF2 = $tempF * $tempF;
$r2 = $r * $r;
$hiF = round(
-42.379 +
(2.04901523 * $tempF) +
(10.14333127 * $r) -
(.22475541 * $tempF * $r) -
(6.83783 * pow(10,-3) * $tempF2) -
(5.481717 * pow(10,-2) * $r2) +
(1.22874 * pow(10,-3) * $tempF2 * $r) +
(8.5282 * pow(10,-4) * $tempF * $r2) -
(1.99 * pow(10,-6) * $tempF2 * $r2)
);
$hiC = $this->convertFahrenheitToCelsius($hiF);
$weather .= 'Temperature: ' . $tempF . 'F/' . $tempC . 'C';
$weather .= ', Humidity: ' . (string) $xml->cc->hmid . '%';
if ($hiF > $tempF || $hiC > $tempC) {
$weather .= ', Heat Index: ' . $hiF . 'F/' . $hiC . 'C';
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}
$weather .=
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', Conditions: ' . (string) $xml->cc->t .
', Updated: ' . (string) $xml->cc->lsup .
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' [ http://weather.com/weather/today/' .
str_replace(
array('(', ')', ',', ' '),
array('', '', '', '+'),
(string) $xml->loc->dnam
) .
' ]';
$this->doPrivmsg($this->event->getSource(), $nick . ': ' . $weather);
}
}