/**
* Generate a preview of the latest 5 posts from the feed source being added/edited
*
* @since 2.0
*/
function wprss_preview_meta_box_callback()
{
global $post;
$feed_url = get_post_meta($post->ID, 'wprss_url', true);
if (!empty($feed_url)) {
$feed = wprss_fetch_feed($feed_url, $post->ID);
if (!is_wp_error($feed)) {
$items = $feed->get_items();
// Figure out how many total items there are, but limit it to 5.
$maxitems = $feed->get_item_quantity(5);
// Build an array of all the items, starting with element 0 (first element).
$items = $feed->get_items(0, $maxitems);
echo '<h4>Latest 5 feed items available from ' . get_the_title() . '</h4>';
echo '<ul>';
foreach ($items as $item) {
// Get human date (comment if you want to use non human date)
$item_date = human_time_diff($item->get_date('U'), current_time('timestamp')) . ' ' . __('ago', 'rc_mdm');
// Start displaying item content within a <li> tag
echo '<li>';
// create item link
//echo '<a href="'.esc_url( $item->get_permalink() ).'" title="'.$item_date.'">';
// Get item title
echo esc_html($item->get_title());
//echo '</a>';
// Display date
echo ' <div class="rss-date"><small>' . $item_date . '</small></div>';
// End <li> tag
echo '</li>';
}
echo '</ul>';
} else {
?>
<span class="invalid-feed-url">
<strong><?php
_e('Invalid feed URL', 'wprss');
?>
</strong> -
<?php
_e('Double check the feed source URL setting above.', 'wprss');
?>
</span>
<p><?php
_e('Not sure where to find the RSS feed on a website?', 'wprss');
?>
<a target="_blank" href="http://webtrends.about.com/od/webfeedsyndicationrss/ss/rss_howto.htm">
<?php
_e('Click here');
?>
</a>
<?php
_e('for a visual guide', 'wprss');
?>
</p>
<?php
}
$force_feed = get_post_meta($post->ID, 'wprss_force_feed', TRUE);
?>
<hr/>
<p>
<label for="wprss-force-feed">
<strong><?php
_e('Are you seeing an error, but sure the feed URL is correct?', 'wprss');
?>
</strong>
</label>
</p>
<p>
<label for="wprss-force-feed">Force the feed</label>
<input type="hidden" name="wprss_force_feed" value="false" />
<input type="checkbox" name="wprss_force_feed" id="wprss-force-feed" value="true" <?php
echo checked($force_feed, 'true');
?>
/>
</p>
<p class="description">
<strong>Note:</strong> This will disable auto discovery of the RSS feed, meaning you will have to use the feed's URL. Using the site's URL will not work.
</p>
<?php
} else {
_e('No feed URL defined yet', 'wprss');
}
}
/**
* Fetches the feed items from a feed at the given URL.
*
* Called from 'wprss_fetch_insert_single_feed_items'
*
* @since 3.0
*/
function wprss_get_feed_items($feed_url, $source)
{
// Add filters and actions prior to fetching the feed items
add_filter('wp_feed_cache_transient_lifetime', 'wprss_feed_cache_lifetime');
add_action('wp_feed_options', 'wprss_do_not_cache_feeds');
/* Fetch the feed from the soure URL specified */
$feed = wprss_fetch_feed($feed_url, $source);
// Remove previously added filters and actions
remove_action('wp_feed_options', 'wprss_do_not_cache_feeds');
remove_filter('wp_feed_cache_transient_lifetime', 'wprss_feed_cache_lifetime');
if (!is_wp_error($feed)) {
// Return the items in the feed.
return $feed->get_items();
} else {
wprss_log('Failed to fetch feed "' . $feed_url . '". ' . $feed->get_error_message());
return NULL;
}
}
/**
* Checks if the feed source uses the force full content option or meta option, and
* returns the fulltextrss url if so.
*
* @since 1.0
*/
public static function check_force_full_content( $feed_url, $feed_ID ) {
if ( wprss_ftp_using_feed_items( $feed_ID ) ) {
return $feed_url;
}
// Get the computed settings / meta options for the feed source
$options = WPRSS_FTP_Settings::get_instance()->get_computed_options( $feed_ID );
// If using force full content option / meta
if ( WPRSS_FTP_Utils::multiboolean( $options['force_full_content'] ) === TRUE ) {
$service = WPRSS_FTP_Settings::get_instance()->get('full_text_rss_service');
$service = apply_filters( 'wprss_ftp_service_before_full_text_feed_url', $service );
switch( $service ) {
case 'free':
$key = WPRSS_FTP_FULL_TEXT_RSS_KEY;
$API_HASH = sha1( $key . $feed_url );
$encoded_url = urlencode( $feed_url );
// Prepare the fulltext sources
$full_text_sources = apply_filters(
'wprss_ftp_full_text_sources',
array(
"http://fulltext.wprssaggregator.com/makefulltextfeed.php?key=1&hash=$API_HASH&links=preserve&exc=1&url=",
"http://ftr-premium.fivefilters.org/makefulltextfeed.php?key=1920&hash=$API_HASH&max=10&links=preserve&exc=1&url=",
)
);
// Start with no feed to use
$feed_url_to_use = NULL;
// Load SimplePie
require_once ( ABSPATH . WPINC . '/class-feed.php' );
// For each source ...
foreach ( $full_text_sources as $full_text_source ) {
// Prepare the feed
$full_text_feed_url = $full_text_source . $encoded_url;
$feed = wprss_fetch_feed( $full_text_feed_url, $feed_ID );
// If the feed has no errors, the we will use this feed
if ( !is_wp_error( $feed ) && !$feed->error() ) {
$feed_url_to_use = $full_text_source . $encoded_url;
break;
}
}
// If after trying all the sources, the feed to use is still NULL, then no source was valid.
// Return the same url passed as parameter, Otherwise, return the full text rss feed url
if ( $feed_url_to_use === NULL ) {
WPRSS_FTP_Utils::log( __( 'Failed to find a working full text rss service.', WPRSS_TEXT_DOMAIN ), 'check_force_full_content' );
}
return ( $feed_url_to_use === NULL )? $feed_url : $feed_url_to_use;
case 'feeds_api':
$api_key = WPRSS_FTP_Settings::get_instance()->get( 'feeds_api_key' );
$encoded_url = urlencode( $feed_url );
$feeds_api_feed_url = WPRSS_FTP_Utils::template(
WPRSS_FTP_FEEDS_API_REQUEST_FORMAT,
array(
'url' => $encoded_url,
'key' => $api_key,
)
);
// Attempt to fetch the feed
$feed = wprss_fetch_feed( $feeds_api_feed_url, $feed_ID );
// If an error was encountered
if ( is_wp_error( $feed ) || $feed->error() ) {
// Request the error message and log it
$response = wp_remote_get( $feeds_api_feed_url );
WPRSS_FTP_Utils::log( "FeedsAPI failed to return a feed, and responded with: \"{$response['body']}\"" );
// Return the original parameter url
return $feed_url;
}
// Return the feeds api if no error was encountered.
return $feeds_api_feed_url;
// For other services
default:
return apply_filters( 'wprss_ftp_misc_full_text_url', $feed_url, $feed_ID, $service );
}
}
// Otherwise, return back the given url
else return $feed_url;
}
/**
* Generate a preview of the latest 5 posts from the feed source being added/edited
*
* @since 2.0
*/
function wprss_preview_meta_box_callback()
{
global $post;
$feed_url = get_post_meta($post->ID, 'wprss_url', true);
$help = WPRSS_Help::get_instance();
/* @var $help WPRSS_Help */
echo '<div id="feed-preview-container">';
if (!empty($feed_url)) {
$feed = wprss_fetch_feed($feed_url, $post->ID);
if (!is_wp_error($feed)) {
$items = $feed->get_items();
// Figure out how many total items there are
$total = $feed->get_item_quantity();
// Get the number of items again, but limit it to 5.
$maxitems = $feed->get_item_quantity(5);
// Build an array of all the items, starting with element 0 (first element).
$items = $feed->get_items(0, $maxitems);
?>
<h4><?php
echo sprintf(__('Latest %1$s feed items out of %2$s available from %3$s'), $maxitems, $total, get_the_title());
?>
</h4>
<ul>
<?php
foreach ($items as $item) {
// Get human date (comment if you want to use non human date)
$has_date = $item->get_date('U') ? TRUE : FALSE;
if ($has_date) {
$item_date = human_time_diff($item->get_date('U'), current_time('timestamp')) . ' ' . __('ago', 'rc_mdm');
} else {
$item_date = '<em>[' . __('No Date', WPRSS_TEXT_DOMAIN) . ']</em>';
}
// Start displaying item content within a <li> tag
echo '<li>';
// create item link
//echo '<a href="'.esc_url( $item->get_permalink() ).'" title="'.$item_date.'">';
// Get item title
echo esc_html($item->get_title());
//echo '</a>';
// Display date
echo ' <div class="rss-date"><small>' . $item_date . '</small></div>';
// End <li> tag
echo '</li>';
}
?>
</ul>
<?php
} else {
?>
<span class="invalid-feed-url">
<?php
_e('<strong>Invalid feed URL</strong> - Double check the feed source URL setting above.', WPRSS_TEXT_DOMAIN);
?>
<?php
wprss_log_obj('Failed to preview feed.', $feed->get_error_message(), NULL, WPRSS_LOG_LEVEL_INFO);
?>
</span>
<?php
echo wpautop(sprintf(__('Not sure where to find the RSS feed on a website? <a target="_blank" href="%1$s">Click here</a> for a visual guide. ', WPRSS_TEXT_DOMAIN), 'http://webtrends.about.com/od/webfeedsyndicationrss/ss/rss_howto.htm'));
}
} else {
echo '<p>' . __('No feed URL defined yet', WPRSS_TEXT_DOMAIN) . '</p>';
}
echo '</div>';
echo '<div id="force-feed-container">';
wprss_render_force_feed_option($post->ID, TRUE);
echo '</div>';
}
/**
* This function is triggered just after a post is updated.
* It checks if the updated post is a feed source, and carries out any
* updating necassary.
*
* @since 3.3
*/
function wprss_updated_feed_source($post_ID, $post_after, $post_before)
{
// Check if the post is a feed source and is published
if ($post_after->post_type == 'wprss_feed' && $post_after->post_status == 'publish') {
if (isset($_POST['wprss_url']) && !empty($_POST['wprss_url'])) {
$url = $_POST['wprss_url'];
$feed = wprss_fetch_feed($url);
if ($feed !== NULL && !is_wp_error($feed)) {
update_post_meta($post_ID, 'wprss_site_url', $feed->get_permalink());
update_post_meta($post_ID, 'wprss_feed_image', $feed->get_image_url());
}
}
if (isset($_POST['wprss_limit']) && !empty($_POST['wprss_limit'])) {
// Checking feed limit change
// Get the limit currently saved in db, and limit in POST request
//$limit = get_post_meta( $post_ID, 'wprss_limit', true );
$limit = $_POST['wprss_limit'];
// Get all feed items for this source
$feed_sources = new WP_Query(array('post_type' => 'wprss_feed_item', 'post_status' => 'publish', 'cache_results' => false, 'no_found_rows' => true, 'posts_per_page' => -1, 'orderby' => 'date', 'order' => 'ASC', 'meta_query' => array(array('key' => 'wprss_feed_id', 'value' => $post_ID, 'compare' => 'LIKE'))));
// If the limit is smaller than the number of found posts, delete the feed items
// and re-import, to ensure that most recent feed items are present.
$difference = intval($feed_sources->post_count) - intval($limit);
if ($difference > 0) {
// Loop and delete the excess feed items
while ($feed_sources->have_posts() && $difference > 0) {
$feed_sources->the_post();
wp_delete_post(get_the_ID(), true);
$difference--;
}
}
}
}
}
