class Search

{

private $query_hash;

public function __construct()

{

$this->query_hash = array(

'sort_by' => array(),

'aggregate' => array(),

'with_field' => array(),

);

}

public function expression($value)

{

$this->query_hash['expression'] = $value;

return $this;

}

public function max_results($value)

{

$this->query_hash['max_results'] = $value;

return $this;

}

public function next_cursor($value)

{

$this->query_hash['next_cursor'] = $value;

return $this;

}

public function sort_by($field_name, $dir = 'desc')

{

array_push($this->query_hash['sort_by'], array($field_name => $dir));

return $this;

}

public function aggregate($value)

{

array_push($this->query_hash['aggregate'], $value);

return $this;

}

public function with_field($value)

{

array_push($this->query_hash['with_field'], $value);

return $this;

}

public function as_array()

{

return array_filter(

$this->query_hash,

function ($value) {

return ((is_array($value) && !empty($value)) || ($value != null));

}

);

}

public function execute($options = array())

{

$api = new Api();

$uri = array('resources/search');

$options = array_merge($options, array('content_type' => 'application/json'));

$method = 'post';

return $api->call_api($method, $uri, $this->as_array(), $options);

}

}