{

function __construct($datasource, $vars, $name, $method, $params, $empty, $root, $output = array(), $permission = null, $cache = true)

{

parent::__construct($vars, $name, $params, $empty, $root, $output, $permission, $cache);

$this->datasource = $datasource;

$this->method = $method;

}

function query($args, $document)

{

$this->validate($args);

$xml = new xml();

switch($this->method)

{

case 'photos':

isset($args['venue_id']) or runtime_error('Foursquare venue_id parameter not found');

$root = $xml->element($this->root[0]);

$xml->append($root);

if($result = json_decode(file_get_contents('https://api.foursquare.com/v2/venues/' . $args['venue_id'] . '/photos?' . $this->datasource->get())))

{

foreach($result->response->photos->groups as $group)

{

if($group->type == 'venue')

{

foreach($group->items as $item)

{

$image = $xml->element('image');

$root->append($image);

$image['@url'] = $item->url;

foreach($item->sizes->items as $size)

{

$resampled = $xml->element('resampled');

$image->append($resampled);

$resampled['@url'] = $size->url;

$resampled['@width'] = $size->width;

$resampled['@height'] = $size->height;

$resampled['@created'] = @date("Y-m-d H:i:s", $item->createdAt);

$resampled['@user-id'] = $item->user->id;

$resampled['@user-first-name'] = $item->user->firstName;

if(isset($item->user->lastName))

{

$resampled['@user-last-name'] = $item->user->lastName;

}

$resampled['@user-gender'] = $item->user->gender;

$resampled['@user-photo'] = $item->user->photo;

}

}

}

}

}

break;

case 'venues':

isset($args['latitude']) or runtime_error('Foursquare latitude parameter not found');

isset($args['longitude']) or runtime_error('Foursquare longitude parameter not found');

$root = $xml->element($this->root[0]);

$xml->append($root);

if($result = json_decode(file_get_contents('https://api.foursquare.com/v2/venues/search?ll=' . $args['latitude'] . ',' . $args['longitude'] . '&' . $this->datasource->get())))

{

foreach($result->response->groups as $group)

{

if($group->type == 'nearby')

{

foreach($group->items as $item)

{

$venue = $xml->element('venue');

$root->append($venue);

$venue['@id'] = $item->id;

$venue['@name'] = $item->name;

$venue['@url'] = $item->canonicalUrl;

foreach($item->categories as $cat)

{

$category = $xml->element('category');

$venue->append($category);

$category['@id'] = $cat->id;

$category['@name'] = $cat->name;

$category['@plural-name'] = $cat->pluralName;

$category['@short-name'] = $cat->shortName;

$category['@icon'] = $cat->icon;

}

}

}

}

}

break;

default:

runtime_error('Unknown Foursquare method: ' . $this->method);

}

return $xml;

}

private $datasource;

private $method;