<?php
/** fetches weather data by given coordinates and returns xml **/

if (isset($_GET['la']) AND isset($_GET['lo'])) {
    google_weather_api_coordinates($_GET['la'], $_GET['lo'], $_GET['lang']);
} else if (isset($_GET['city'])) {
    google_weather_api_city($_GET['city'], $_GET['lang']);
}

function google_weather_api_coordinates($latitude, $longitude, $language) {
    header("Content-type: text/xml; charset=utf-8");

    $la = $latitude*10000000;
    $lo = $longitude*10000000;
    $la = substr($la.'', 0, 8);
    $lo = substr($lo.'', 0, 8);
    $language = substr($language, 0, 2);

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, "http://www.google.com/ig/api?weather=,,,".$la.",".$lo."&hl=".$language);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $xmlContents = utf8_encode(curl_exec($ch));
    curl_close($ch);

    echo $xmlContents;

}

function google_weather_api_city($city, $language) {
    header("Content-type: text/xml; charset=utf-8");

    $city = urlencode($city);
    $language = substr($language, 0, 2);

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, "http://www.google.com/ig/api?weather=".$city."&hl=".$language);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $xmlContents = utf8_encode(curl_exec($ch));
    curl_close($ch);

    echo $xmlContents;

}


?>