public function get_coupons( $fields = null, $filter = array(), $page = 1 ) {

		$filter['page'] = $page;

		$query = $this->query_coupons( $filter );

		$coupons = array();

		foreach ( $query->posts as $coupon_id ) {

			if ( ! $this->is_readable( $coupon_id ) ) {
				continue;
			}

			$coupons[] = current( $this->get_coupon( $coupon_id, $fields ) );
		}

		$this->server->add_pagination_headers( $query );

		return array( 'coupons' => $coupons );
	}