public static function poll()
{
// This is a super lightweight API to get posts and comments from WP
// It's intended for use with o2
// @todo Allow requesting a specific post or comment, and a post with all comments
// Need to sort things because they're queried separately
function o2_date_sort($a, $b)
{
if ($a->unixtime == $b->unixtime) {
return 0;
}
return $a->unixtime > $b->unixtime ? -1 : 1;
}
$ok_to_serve_data = true;
$ok_to_serve_data = apply_filters('o2_read_api_ok_to_serve_data', $ok_to_serve_data);
$data = array();
if ($ok_to_serve_data) {
$posts = self::get_posts();
$comments = self::get_comments();
// Clean up posts and comments
$data = array();
if (count($posts)) {
foreach ($posts as $post) {
$data[] = o2_Fragment::get_fragment($post);
}
}
if (count($comments)) {
foreach ($comments as $comment) {
$data[] = o2_Fragment::get_fragment($comment);
}
}
// Shuffle up and deal
usort($data, 'o2_date_sort');
}
// Let the client know if the user is logged in or not
$is_logged_in = is_user_logged_in();
// Generate an updated nonce (they expire after all, and our "app" may be open for a long time)
$new_nonce = wp_create_nonce('o2_nonce');
if ($is_logged_in) {
// @todo change to another way, and one that is less costly - see also below
// $current_user_id = get_current_user_id();
// update_user_meta( $current_user_id, 'o2_last_poll_gmt', time() );
}
$response = array("data" => $data, "newNonce" => $new_nonce, "loggedIn" => $is_logged_in);
// Check for unloaded scripts and styles if there are polled posts
if (!empty($data)) {
// Attach scripts
if (isset($_REQUEST['scripts'])) {
// Parse and sanitize the script handles already output
if (!is_array($_REQUEST['scripts'])) {
$_REQUEST['scripts'] = explode(',', $_REQUEST['scripts']);
}
$initial_scripts = is_array($_REQUEST['scripts']) ? array_map('sanitize_text_field', $_REQUEST['scripts']) : null;
if (is_array($initial_scripts)) {
global $wp_scripts;
if (!$wp_scripts instanceof WP_Scripts) {
$wp_scripts = new WP_Scripts();
}
// Identify new scripts needed by the polled posts
$polled_scripts = array_diff($wp_scripts->done, $initial_scripts);
// If new scripts are needed, extract relevant data from $wp_scripts
if (!empty($polled_scripts)) {
$response['scripts'] = array();
foreach ($polled_scripts as $handle) {
// Abort if the handle doesn't match a registered script
if (!isset($wp_scripts->registered[$handle])) {
continue;
}
// Provide basic script data
$script_data = array('handle' => $handle, 'footer' => is_array($wp_scripts->in_footer) && in_array($handle, $wp_scripts->in_footer), 'extra_data' => $wp_scripts->print_extra_script($handle, false));
// Base source
$src = $wp_scripts->registered[$handle]->src;
// Take base_url into account
if (strpos($src, '//') === 0) {
$src = is_ssl() ? 'https:' . $src : 'http:' . $src;
}
// Deal with root-relative URLs
if (strpos($src, '/') === 0) {
$src = $wp_scripts->base_url . $src;
}
if (strpos($src, 'http') !== 0) {
$src = $wp_scripts->base_url . $src;
}
// Version and additional arguments
if (null === $wp_scripts->registered[$handle]->ver) {
$ver = '';
} else {
$ver = $wp_scripts->registered[$handle]->ver ? $wp_scripts->registered[$handle]->ver : $wp_scripts->default_version;
}
if (isset($wp_scripts->args[$handle])) {
$ver = $ver ? $ver . '&' . $wp_scripts->args[$handle] : $wp_scripts->args[$handle];
}
// Full script source with version info
$script_data['src'] = add_query_arg('ver', $ver, $src);
// Add script to data that will be returned to o2
array_push($response['scripts'], $script_data);
}
}
}
}
// Attach styles
if (isset($_REQUEST['styles'])) {
// Parse and sanitize the script handles already output
if (!is_array($_REQUEST['styles'])) {
$_REQUEST['styles'] = explode(',', $_REQUEST['styles']);
}
// Parse and sanitize the style handles already output
$initial_styles = is_array($_REQUEST['styles']) ? array_map('sanitize_text_field', $_REQUEST['styles']) : null;
if (is_array($initial_styles)) {
global $wp_styles;
// Identify new styles needed by the polled posts
$polled_styles = array_diff($wp_styles->done, $initial_styles);
// If new styles are needed, extract relevant data from $wp_styles
if (!empty($polled_styles)) {
$response['styles'] = array();
foreach ($polled_styles as $handle) {
// Abort if the handle doesn't match a registered stylesheet
if (!isset($wp_styles->registered[$handle])) {
continue;
}
// Provide basic style data
$styles_data = array('handle' => $handle, 'media' => 'all');
// Base source
$src = $wp_styles->registered[$handle]->src;
// Take base_url into account
if (strpos($src, 'http') !== 0) {
$src = $wp_styles->base_url . $src;
}
// Version and additional arguments
if (null === $wp_styles->registered[$handle]->ver) {
$ver = '';
} else {
$ver = $wp_styles->registered[$handle]->ver ? $wp_styles->registered[$handle]->ver : $wp_styles->default_version;
}
if (isset($wp_styles->args[$handle])) {
$ver = $ver ? $ver . '&' . $wp_styles->args[$handle] : $wp_styles->args[$handle];
}
// Full script source with version info
$script_data['src'] = add_query_arg('ver', $ver, $src);
// @todo Handle parsing conditional comments
// Parse requested media context for stylesheet
if (isset($wp_styles->registered[$handle]->args)) {
$style_data['media'] = esc_attr($wp_styles->registered[$handle]->args);
}
// Add script to data that will be returned to o2
array_push($response['styles'], $style_data);
}
}
}
}
}
wp_send_json_success($response);
}
