<?php
/*
 * Plugin Name: LastComments
 * Type: Block
 * Version: 1.0
 * Plugin URI: https://www.flatpress.org
 * Author: FlatPress
 * Author URI: https://www.flatpress.org
 * Description: Adds a widget that shows the latest comments. Part of the standard distribution.
 */
define('LASTCOMMENTS_CACHE_FILE', CACHE_DIR . 'lastcomments.tmp');
define('LASTCOMMENTS_MAX', 8);

add_action('comment_post', 'plugin_lastcomments_cache', 0, 2);

function plugin_lastcomments_widget() {
	if (false === ($f = io_load_file(LASTCOMMENTS_CACHE_FILE))) {
		// no comments in cache
		$list = array();
	} else {
		// if file exists and its correctly read, we get the stored list
		// (it is stored in encoded form)
		$list = unserialize($f);
	}

	$content = '<ul class="last-comments">';

	// cimangi Aggiunta traduzione stringhe

	// load plugin strings
	// they're located under plugin.PLUGINNAME/lang/LANGID/
	$lang = lang_load('plugin:lastcomments');

	$update = false;

	if ($count = count($list)) {
		while ($arr = array_pop($list)) {
			$q = new FPDB_Query(array(
				'id' => $arr ['entry']
			), null);
			// first element of the array is dropped, as it is the ID, which
			// we already know
			@list (, $entry) = $q->getEntry();

			if (!$entry) {
				$count--;
				$update = true;
				continue;
			}

			$content .= "<li>
			<blockquote class=\"comment-quote\" cite=\"comments.php?entry={$arr['entry']}#{$arr['id']}\">
			{$arr['content']}
			<p><a href=\"" . get_comments_link($arr ['entry']) . "#{$arr['id']}\">{$arr['name']} - {$entry['subject']}</a></p>
			</blockquote></li>\n";
		}
		$subject = $lang ['plugin'] ['lastcomments'] ['last'] . ' ' . $count . ' ' . $lang ['plugin'] ['lastcomments'] ['comments'];
	}

	if (!$count) {
		if ($update)
			fs_delete(LASTCOMMENTS_CACHE_FILE);
		$content .= '<li>' . $lang ['plugin'] ['lastcomments'] ['no_comments'] . '</li>';
		$subject = $lang ['plugin'] ['lastcomments'] ['no_new_comments'];
	}

	$content .= '</ul>';

	$entry ['subject'] = $subject;
	$entry ['content'] = $content;

	return $entry;
}

/**
 * function plugin_lastcomments_cache
 *
 * comment cache is a reverse queue; we put
 * element on the top, and we delete elements
 * from bottom; this is because the output
 * string is created reading queuing from top to bottom.
 * All this headache stuff just to say that
 * in the end the widget will show up elements ordered
 * from newer to older :P
 *
 * @param $entryid string
 *        	entry id i.e. entryNNNNNN-NNNNNN
 * @param $comment array
 *        	where $comment[0] is $commentid i.e. commentNNNNNN-NNNNNN
 *        	and $comment[1] is the actual content array
 */
function plugin_lastcomments_cache($entryid, $comment) {

	// max num of chars per comment
	$CHOP_AT = 30;

	list ($id, $content) = $comment;

	comment_clean($content);

	if (false === ($f = io_load_file(LASTCOMMENTS_CACHE_FILE))) {
		// no comments in cache
		$list = array();
	} else {
		// if file exists and its correctly read, we get the stored list
		// (it is stored in encoded form)
		$list = unserialize($f);

		if (count($list) + 1 > LASTCOMMENTS_MAX) {
			// comments are more than allowed maximum:
			// we delete the last in queue.
			array_shift($list);
		}
	}

	if (strlen($content ['content']) > $CHOP_AT) {
		$string = substr($content ['content'], 0, $CHOP_AT) . '...';
	} else {
		$string = $content ['content'];
	}

	array_push($list, array(
		'name' => $content ['name'],
		'content' => $string,
		'id' => $id,
		'entry' => $entryid
	));

	return io_write_file(LASTCOMMENTS_CACHE_FILE, serialize($list));
}

register_widget('lastcomments', 'LastComments', 'plugin_lastcomments_widget');

function plugin_lastcomments_rss() {
	global $smarty;

	if (false === ($f = io_load_file(LASTCOMMENTS_CACHE_FILE))) {
		// no comments in cache
		$list = array();
	} else {
		// if file exists and its correctly read, we get the stored list
		// (it is stored in encoded form)
		$list = unserialize($f);
	}

	$newlist = array();
	foreach ($list as $c) {
		$newlist [] = comment_parse($list ['entryid'], $list ['id']);
	}

	$smarty->assign('lastcomments_list', $newlist);
}

/*
 *
 * function plugin_lastcomments_def_rss_link() {
 * return BLOG_BASEURL . "?feed=lastcomments-rss2";
 * }
 *
 * function plugin_lastcomments_rss_link() {
 * return apply_filters('plugin_lastcomments_rss_link', '');
 * }
 *
 * add_action('wp_head', 'plugin_lastcomments_rsshead');
 * function plugin_lastcomments_rsshead() {
 * echo "\n<link rel=\"alternate\" type=\"application/rss+xml\" title=\"Get RSS 2.0 Feed\" href=\"".
 * plugin_lastcomments_rss_link()
 * ."\" />\n";
 * }
 *
 * add_action('init', 'plugin_lastcomments_rssinit');
 * function plugin_lastcomments_rssinit() {
 * global $smarty;
 *
 * if (isset($_GET['feed']) && $_GET['feed']=='lastcomments-rss2') {
 * $smarty->display('plugin:lastcomments/plugin.lastcomments-feed');
 * exit();
 * }
 * }
 *
 */

?>
