/**
* Retrieves a list of posts from a remote site.
*
* @param int $site_id The ID of the site to get posts for
* @return array|bool Array of posts on success, false on failure.
*/
public function get_posts($site_id = 0)
{
// create $post with values from $this::node_to_post
// create $post_meta with values from $this::node_to_meta
//TODO: required fields for post
//TODO: handle categories
$abs_nodes = $item_nodes = $enc_nodes = $tax_nodes = $abs_post_fields = $abs_meta_data = $abs_tax_data = $posts = array();
$site = get_post($site_id);
$node_config = get_post_meta($site->ID, 'syn_node_config', true);
$enc_field = get_post_meta($site->ID, 'syn_enc_field', true);
/**
* Filter the XML pull client feed url.
*
* @param string $feed_url The site's feed url.
* @todo Consider adding $site_id for context.
*/
$feed_url = apply_filters('syn_feed_url', get_post_meta($site->ID, 'syn_feed_url', true));
$enclosures_as_strings = isset($node_config['enclosures_as_strings']) ? true : false;
$id_field = get_post_meta($site_id, 'syn_id_field', true);
$enc_is_photo = get_post_meta($site_id, 'syn_enc_is_photo', true);
$new_posts = array();
//TODO: add checkbox on feed config to allow enclosures to be saved as strings as SI does
//TODO: add tags here and in feed set up UI
foreach ($node_config['nodes'] as $key => $storage_locations) {
foreach ($storage_locations as $storage_location) {
$storage_location['xpath'] = $key;
if ($storage_location['is_item']) {
$item_nodes[] = $storage_location;
} else {
if ($storage_location['is_photo']) {
$enc_nodes[] = $storage_location;
} else {
if ($storage_location['is_tax'] && $storage_location['is_item']) {
$tax_nodes[] = $storage_location;
} else {
$abs_nodes[] = $storage_location;
}
}
}
}
}
// Fetch the XML feed
$feed = $this->remote_get($feed_url);
if (Syndication\is_wp_error_do_throw($feed)) {
Syndication\Syndication_Logger::log_post_error($site->ID, $status = 'error', $message = sprintf(__('Could not reach feed at: %s | Error: %s', 'push-syndication'), $feed_url, $feed->get_error_message()), $log_time = null, $extra = array());
/* This action is documented in includes/clients/rss-pull/class-pull-client.php */
do_action('push_syndication_event', 'pull_failure', $site->ID);
return array();
} else {
Syndication\Syndication_Logger::log_post_info($site->ID, $status = 'fetch_feed', $message = sprintf(__('fetched feed with %d bytes', 'push-syndication'), strlen($feed)), $log_time = null, $extra = array());
}
/**
* @var SimpleXMLElement $xml
*/
$xml = simplexml_load_string($feed, null, 0, $node_config['namespace'], false);
if (false === $xml) {
Syndication\Syndication_Logger::log_post_error($site->ID, $status = 'error', $message = sprintf(__('Failed to parse feed at: %s', 'push-syndication'), $feed_url), $log_time = null, $extra = array());
/* This action is documented in includes/clients/rss-pull/class-pull-client.php */
do_action('push_syndication_event', 'pull_failure', $site->ID);
return array();
}
$abs_post_fields['enclosures_as_strings'] = $enclosures_as_strings;
// TODO: handle constant strings in XML
foreach ($abs_nodes as $abs_node) {
$value_array = array();
if ('string(' == substr($abs_node['xpath'], 0, 7)) {
$value_array[0] = substr($abs_node['xpath'], 7, strlen($abs_node['xpath']) - 8);
} else {
$value_array = $xml->xpath(stripslashes($abs_node['xpath']));
}
if ($abs_node['is_meta']) {
if (isset($value_array[0]) && !empty($value_array[0])) {
$abs_meta_data[$abs_node['field']] = (string) $value_array[0];
}
} else {
if ($abs_node['is_tax']) {
if (isset($value_array[0]) && !empty($value_array[0])) {
$abs_tax_data[$abs_node['field']] = (string) $value_array[0];
}
} else {
if (isset($value_array[0]) && !empty($value_array[0])) {
$abs_post_fields[$abs_node['field']] = (string) $value_array[0];
}
}
}
}
$items = $xml->xpath($node_config['post_root']);
if (empty($items)) {
Syndication\Syndication_Logger::log_post_error($site->ID, $status = 'error', $message = printf(__('No post nodes found using XPath "%s" in feed', 'push-syndication'), $node_config['post_root']), $log_time = $site->postmeta['is_update'], $extra = array());
return array();
} else {
Syndication\Syndication_Logger::log_post_info($site->ID, $status = 'simplexml_load_string', $message = sprintf(__('parsed feed, received %d items', 'push-syndication'), count($items)), $log_time = null, $extra = array());
}
foreach ($items as $item_index => $item) {
// @todo flush out how the post is actually created
$new_post = new Types\Post();
$meta_data = $tax_data = $value_array = array();
$meta_data['is_update'] = current_time('mysql');
$new_post->post_data['post_type'] = get_post_meta($site->ID, 'syn_default_post_type', true);
//save photos as enclosures in meta
if (isset($node_config['enc_parent']) && strlen($node_config['enc_parent']) && !empty($enc_nodes)) {
$meta_data['enclosures'] = $this->get_enclosures($item->xpath($node_config['enc_parent']), $enc_nodes, $enc_is_photo);
// This is wonky and messed up, @todo repair me please
// the old implementation in 2.0 (in class-syndication-wp-xml-client.php:876)
// used the following logic (named updated for refactor)
// however, they purposefully only saved the last enclosure
foreach ($meta_data['enclosures'] as $enclosure) {
if (defined('ENCLOSURES_AS_STRINGS') && constant('ENCLOSURES_AS_STRINGS')) {
$enclosure = implode("\n", $enclosure);
}
$new_post->post_meta['enc_field'] = $enclosure;
}
}
foreach ($item_nodes as $save_location) {
if ('string(' == substr($save_location['xpath'], 0, 7)) {
$value_array[0] = substr($save_location['xpath'], 7, strlen($save_location['xpath']) - 8);
} else {
$value_array = $item->xpath(stripslashes($save_location['xpath']));
}
if (isset($save_location['is_meta']) && $save_location['is_meta']) {
//SimpleXMLElement::xpath returns either an array or false if an element isn't returned
//checking $value_array first avoids the warning we get if the field isn't found
if ($value_array && count($value_array) > 1) {
$value_array = array_map('strval', $value_array);
$meta_data[$save_location['field']] = $value_array;
} else {
if ($value_array) {
//return a string if $value_array contains only a single element
$meta_data[$save_location['field']] = (string) $value_array[0];
}
}
} else {
if (isset($save_location['is_tax']) && $save_location['is_tax']) {
//for some taxonomies, multiple values may be supplied in the field
foreach ($value_array as $value) {
$tax_data[$save_location['field']] = (string) $value;
}
} else {
$new_post->post_data[$save_location['field']] = (string) $value_array[0];
}
}
}
// get this into the tax data
$new_post->post_data['post_category'] = $node_config['categories'];
// get this into the meta data
$meta_data['site_id'] = $site->ID;
$meta_data = array_merge($meta_data, $abs_meta_data);
$tax_data = array_merge($tax_data, $abs_tax_data);
if (!empty($enc_field)) {
$meta_data['enc_field'] = $enc_field;
}
if (!isset($meta_data['position'])) {
$meta_data['position'] = $item_index;
}
if (!empty($meta_data)) {
$new_post->post_meta = $meta_data;
}
if (!empty($tax_data)) {
$new_post->post_terms = $tax_data;
}
if (!empty($meta_data[$id_field])) {
$new_post->post_data['guid'] = $meta_data[$id_field];
}
$new_posts[] = $new_post;
}
Syndication\Syndication_Logger::log_post_info($site->ID, $status = 'posts_received', $message = sprintf(__('%d posts were prepared', 'push-syndication'), count($new_posts)), $log_time = null, $extra = array());
/* This action is documented in includes/clients/rss-pull/class-pull-client.php */
do_action('push_syndication_event', 'pull_success', $site->ID);
return $new_posts;
}
