<?php

require 'lib.php';

// What kind of request?

if($_GET === array()) // do usage
{
    readfile('map-wizard.html');
    die();
}
else // prepare a feed
{
    if($debug)
        header('Content-Type: text/plain; charset=UTF-8');
    else
        header('Content-Type: text/html; charset=UTF-8');
}

// gather parameters

$dow = getDowParam('dow', 'Dow Jones opening value');
$date = getDateParam('date', 'local date');
$lat = getCoord('lat', $LATITUDE);
$lon = getCoord('lon', $LONGITUDE);

//compute meetup

$meetup = theAlgorithm($date, $dow, $lat, $lon);

// map it

$staticMapSource = createMeetupStaticMap($lat, $lon, $meetup);

//display

$safeMapSource = htmlentities($staticMapSource);

echo <<<EOHTML
    <p>Meetup: {$meetup['lat']['full']}, {$meetup['lon']['full']}</p>
    
    <a href="http://carabiner.peeron.com/xkcd/map/map.html?lat={$lat['ID']}&amp;long={$lon['ID']}&amp;date={$date}&amp;zoom=8"><img src="{$safeMapSource}" alt="Static map" /></a>
EOHTML;

?>