// Associative array to hold results of the plugin

static $plgDisplay = array ();

static $includedCss = false;

protected $basepath = null;

// *** initialization ***

function plgContentKunenaDiscuss(&$subject, $params) {

$this->_app = JFactory::getApplication ( 'site' );

// If plugin is not enabled in current scope, do not register it

if (! $this->enabled ())

return null;

$jversion = new JVersion();

if ($jversion->RELEASE != '1.5') {

$this->basepath = 'plugins/content/kunenadiscuss';

} else {

$this->basepath = 'plugins/content';

}

// Load language files

$this->loadLanguage ( 'plg_content_kunenadiscuss', JPATH_ADMINISTRATOR );

// Kunena detection and version check

$minKunenaVersion = '1.6.3';

if (!class_exists('Kunena') || Kunena::versionBuild() < 4344) {

$this->_app->enqueueMessage( JText::sprintf ( 'PLG_KUNENADISCUSS_DEPENDENCY_FAIL', $minKunenaVersion ) );

return null;

}

// Kunena online check

if (!Kunena::enabled()) {

return null;

}

// Initialize session

$session = KunenaFactory::getSession ();

$session->updateAllowedForums();

// Initialize plugin

parent::__construct ( $subject, $params );

// Initialize variables

$this->_db = JFactory::getDbo ();

$this->_my = JFactory::getUser ();

require_once (KUNENA_PATH . DS . 'class.kunena.php');

$this->config = KunenaFactory::getConfig ();

// load Kunena main language file so we can leverage language strings from it

KunenaFactory::loadLanguage();

// Create plugin table if doesn't exist

$query = "SHOW TABLES LIKE '{$this->_db->getPrefix()}kunenadiscuss'";

$this->_db->setQuery ( $query );

if (!$this->_db->loadResult ()) {

CKunenaTools::checkDatabaseError ();

$query = "CREATE TABLE IF NOT EXISTS `#__kunenadiscuss`

(`content_id` int(11) NOT NULL default '0',

`thread_id` int(11) NOT NULL default '0',

PRIMARY KEY (`content_id`)

)";

$this->_db->setQuery ( $query );

$this->_db->query ();

CKunenaTools::checkDatabaseError ();

$this->debug ( "Created #__kunenadiscuss cross reference table." );

// Migrate data from old FireBoard discussbot if it exists

$query = "SHOW TABLES LIKE '{$this->_db->getPrefix()}fb_discussbot'";

$this->_db->setQuery ( $query );

if ($this->_db->loadResult ()) {

$query = "REPLACE INTO `#__kunenadiscuss`

SELECT `content_id` , `thread_id`

FROM `#__fb_discussbot`";

$this->_db->setQuery ( $query );

$this->_db->query ();

CKunenaTools::checkDatabaseError ();

$this->debug ( "Migrated old data." );

}

}

$this->debug ( "Constructor called in " . $this->_app->scope );

}

// Joomla 1.5 support

public function onPrepareContent(&$article, &$params, $limitstart=0) {

$context = 'com_content.article';

return $this->prepare($context, $article, $params);

}

function onAfterDisplayContent(&$article, &$params, $limitstart=0) {

$context = 'com_content.article';

return $this->display($context, $article, $params);

}

// Joomla 1.6 support

public function onContentBeforeDisplay($context, &$article, &$params, $limitstart=0) {

return $this->prepare($context, $article, $params);

}

public function onContentAfterDisplay($context, &$article, &$params, $limitstart=0) {

return $this->display($context, $article, $params);

}

function enabled() {

if ($this->_app->scope == 'com_content')

return true;

if ($this->_app->scope == 'com_kunena')

return true;

return false;

}

// *** Prepare content ***

protected function prepare($context, &$article, &$params) {

// Only proceed if this event is not originated by Kunena itself or we run the danger of an event recursion

$ksource = '';

if ($params instanceof JParameter){

$ksource = $params->get( 'ksource', '');

}

if ($ksource != 'kunena' ){

$customTopics = $this->params->get ( 'custom_topics', 1 );

$articleCategory = (isset ( $article->catid ) ? $article->catid : 0);

$isStaticContent = ! $articleCategory;

if ($isStaticContent) {

$kunenaCategory = false;

} else {

$kunenaCategory = $this->getForumCategory ( $articleCategory );

if (! $kunenaCategory ) {

if ( ! $customTopics) $this->debug ( "onPrepareContent: Allowing only Custom Topics" );

}

}

$kunenaTopic = false;

$regex = '/{kunena_discuss:(\d+?)}/s';

if (JRequest::getVar ( 'tmpl', '' ) == 'component' || JRequest::getBool ( 'print' ) || JRequest::getVar ( 'format', 'html' ) != 'html' || (isset ( $article->state ) && ! $article->state) || empty ( $article->id ) || $this->_app->scope == 'com_kunena') {

$this->debug ( "onPrepareContent: Not allowed - removing tags." );

if (isset ( $article->text ))

$article->text = preg_replace ( $regex, '', $article->text );

if (isset ( $article->introtext ))

$article->introtext = preg_replace ( $regex, '', $article->introtext );

if (isset ( $article->fulltext ))

$article->fulltext = preg_replace ( $regex, '', $article->fulltext );

}

$view = JRequest::getVar ( 'view' );

$layout = JRequest::getVar ( 'layout' );

$isBlogPage = $view == 'category' && $layout == 'blog';

$isFrontPage = $view == 'frontpage' || $view == 'featured';

if ($isBlogPage) {

$this->debug ( "onPrepareContent: we are in blog page." );

$show = $this->params->get ( 'show_blog_page', 2 );

} else if ($isFrontPage) {

$this->debug ( "onPrepareContent: we are in front page." );

$show = $this->params->get ( 'show_front_page', 2 );

} else {

$this->debug ( "onPrepareContent: we are in {$view}/{$layout} page." );

$show = $this->params->get ( 'show_other_pages', 2 );

}

if (! $show || isset ( self::$plgDisplay [$article->id] )) {

$this->debug ( "onPrepareContent: Configured to show nothing" );

if (isset ( $article->text ))

$article->text = preg_replace ( $regex, '', $article->text );

if (isset ( $article->introtext ))

$article->introtext = preg_replace ( $regex, '', $article->introtext );

if (isset ( $article->fulltext ))

$article->fulltext = preg_replace ( $regex, '', $article->fulltext );

return;

}

$this->debug ( "onPrepareContent: Article {$article->id}" );

if (! $customTopics) {

$this->debug ( "onPrepareContent: Custom Topics disabled" );

} else {

// Get fulltext from frontpage articles (tag can be inside fulltext)

if ($isFrontPage) {

$query = "SELECT `fulltext` FROM #__content WHERE id ={$this->_db->quote($article->id)}";

$this->_db->setQuery ( $query );

$fulltext = $this->_db->loadResult ();

CKunenaTools::checkDatabaseError ();

$text = $article->introtext . ' ' . $fulltext;

} else {

if (isset ( $article->text )) {

$text = $article->text;

} else {

if (isset ( $article->introtext )) {

$text [] = $article->introtext;

}

if (isset ( $article->fulltext )) {

$text [] = $article->fulltext;

}

$text = implode ( "\n\n", $text );

}

}

$matches = array ();

if (preg_match ( $regex, $text, $matches )) {

$kunenaTopic = intval ( $matches [1] );

if (isset ( $article->text ))

$article->text = preg_replace ( "/{kunena_discuss:$kunenaTopic}/", '', $article->text, 1 );

if (isset ( $article->introtext ))

$article->introtext = preg_replace ( "/{kunena_discuss:$kunenaTopic}/", '', $article->introtext, 1 );

if (isset ( $article->fulltext ))

$article->fulltext = preg_replace ( "/{kunena_discuss:$kunenaTopic}/", '', $article->fulltext, 1 );

if ($kunenaTopic == 0) {

$this->debug ( "onPrepareContent: Searched for {kunena_discuss:#}: Discussion of this article has been disabled." );

}

}

$this->debug ( "onPrepareContent: Searched for {kunena_discuss:#}: Custom Topic " . ($kunenaTopic ? "{$kunenaTopic} found." : "not found.") );

}

if ($kunenaCategory || $kunenaTopic) {

self::$plgDisplay [$article->id] = $this->showPlugin ( $kunenaCategory, $kunenaTopic, $article, $show == 1 );

}

} // end of $ksource!='kunena' check

}

// *** display content ***

protected function display($context, &$article, &$params) {

if (isset ( self::$plgDisplay [$article->id] )) {

$this->debug ( "onAfterDisplayContent: Returning content for article {$article->id}" );

return self::$plgDisplay [$article->id];

} else {

return '';

}

}

// *** internal functions follows ***

/******************************************************************************

*

*****************************************************************************/

protected function showPlugin($catid, $thread, &$row, $linkOnly) {

// Show a simple form to allow posting to forum from the plugin

$plgShowForm = $this->params->get ( 'form', 1 );

// Default is to put QuickPost at the very bottom.

$formLocation = $this->params->get ( 'form_location', 0 );

// Don't repeat the CSS for each instance of this plugin in a page!

if (! self::$includedCss) {

$doc = JFactory::getDocument ();

$doc->addStyleSheet ( KUNENA_JLIVEURL . $this->basepath .'/kunenadiscuss/discuss.css' );

self::$includedCss = true;

}

$subject = $row->title;

$published = JFactory::getDate(isset($row->publish_up) ? $row->publish_up : 'now')->toUnix();

$now = JFactory::getDate()->toUnix();

// Find cross reference and the real topic

$query = "SELECT d.content_id, d.thread_id, m.id AS mesid, t.thread, t.time

FROM #__kunenadiscuss AS d

LEFT JOIN #__kunena_messages AS m ON d.thread_id = m.id

LEFT JOIN #__kunena_messages AS t ON t.id = m.thread

WHERE d.content_id = {$this->_db->quote($row->id)}";

$this->_db->setQuery ( $query );

$result = $this->_db->loadObject ();

CKunenaTools::checkDatabaseError ();

if ( is_object($result) ) {

if ($thread && $thread != $result->mesid) {

// Custom Topic is not the same as cross reference, additional check needed

$query = "SELECT t.thread

FROM #__kunena_messages AS m

LEFT JOIN #__kunena_messages AS t ON t.id = m.thread

WHERE m.id = {$this->_db->quote($thread)}";

$this->_db->setQuery ( $query );

$result->thread = $this->_db->loadResult ();

CKunenaTools::checkDatabaseError ();

if (!$result->thread) {

$this->debug ( "showPlugin: Custom Topic does not exist, aborting" );

return '';

}

$this->debug ( "showPlugin: Custom Topic points to new location {$result->thread}" );

}

if ($result->thread != $result->thread_id) {

// Topic has been moved, has been deleted or tag inside message has been changed

$this->debug ( "showPlugin: Removing cross reference record pointing to topic {$result->thread_id}" );

$query = "DELETE FROM #__kunenadiscuss WHERE content_id={$this->_db->quote($result->content_id)}";

$this->_db->setQuery ( $query );

$this->_db->query ();

CKunenaTools::checkDatabaseError ();

// We may need to add new cross reference or create new topic

$thread = $result->thread;

$result = null;

}

}

if ( !is_object($result) && $thread) {

// Find the real topic

$query = "SELECT {$this->_db->quote($row->id)} AS content_id, t.id AS thread_id, m.id AS mesid, t.thread, t.time

FROM #__kunena_messages AS m

LEFT JOIN #__kunena_messages AS t ON t.id = m.thread

WHERE m.id = {$this->_db->quote($thread)}";

$this->_db->setQuery ( $query );

$result = $this->_db->loadObject ();

CKunenaTools::checkDatabaseError ();

if ( !is_object($result) ) {

$this->createReference ( $row, $thread );

$this->debug ( "showPlugin: First hit to Custom Topic, created cross reference to topic {$thread}" );

} else {

$this->debug ( "showPlugin: First hit to Custom Topic, cross reference not created to topic {$thread} because it exist already" );

}

} else if (! is_object($result) ) {

$thread = 0;

$create = $this->params->get ( 'create', 0 );

$createTime = $this->params->get ( 'create_time', 0 )*604800; // Weeks in seconds

if ($createTime && $published+$createTime < $now) {

$this->debug ( "showPlugin: Topic creation time expired, cannot start new discussion anymore" );

return '';

}

if ($create) {

$thread = $this->createTopic ( $row, $catid, $subject );

$this->debug ( "showPlugin: First hit, created new topic {$thread} into forum" );

}

} else {

$thread = $result->thread_id;

$this->debug ( "showPlugin: Topic {$thread} exists in the forum" );

}

// Do we allow answers into the topic?

$closeTime = $this->params->get ( 'close_time', 0 ) * 604800; // Weeks in seconds or 0

if ($closeTime) {

$this->debug ( "showPlugin: Check if topic is closed" );

if ($result) {

$closeReason = $this->params->get ( 'close_reason', 0 );

if ($closeReason) {

// Close topic by last post time

$query = "SELECT MAX(time)

FROM #__kunena_messages

WHERE thread = {$this->_db->quote($result->thread)}";

$this->_db->setQuery ( $query );

$closeTime = $this->_db->loadResult () + $closeTime;

CKunenaTools::checkDatabaseError ();

$this->debug ( "showPlugin: Close time by last post" );

} else {

// Close topic by cration time

$closeTime = $result->time + $closeTime;

$this->debug ( "showPlugin: Close time by topic creation" );

}

} else {

$closeTime = $now;

}

}

if ($linkOnly && $thread) {

$this->debug ( "showPlugin: Link only" );

$sql = "SELECT COUNT(*) FROM #__kunena_messages WHERE hold=0 AND parent!=0 AND thread={$this->_db->quote($thread)}";

$this->_db->setQuery ( $sql );

$postCount = $this->_db->loadResult ();

CKunenaTools::checkDatabaseError ();

$linktitle = JText::sprintf ( 'PLG_KUNENADISCUSS_DISCUSS_ON_FORUMS', $postCount );

require_once (KPATH_SITE . '/lib/kunena.link.class.php');

$link = CKunenaLink::GetThreadLink ( 'view', $catid, $thread, $linktitle, $linktitle );

return '<div class="kunenadiscuss">' . $link . '</div>';

}

// ************************************************************************

// Process the QuickPost form

$quickPost = '';

if (!$plgShowForm) {

$this->debug ( "showPlugin: Form has been disabled" );

} elseif (!$closeTime || $closeTime >= $now) {

$canPost = $this->canPost ( $catid, $thread );

if ($canPost && JRequest::getInt ( 'kdiscussContentId', 0, 'POST' ) == $row->id) {

$this->debug ( "showPlugin: Reply topic!" );

$quickPost .= $this->replyTopic ( $row, $catid, $thread, $subject );

} else {

$quickPost .= $this->showForm ( $row, $catid, $thread, $subject );

}

}

// This will be used all the way through to tell users how many posts are in the forum.

$content = $this->showTopic ( $catid, $thread );

if (!$content && !$quickPost) {

return '';

}

if ($formLocation) {

$content = '<div class="kunenadiscuss">' . $content . '<br />' . $quickPost . '</div>';

} else {

$content = '<div class="kunenadiscuss">' . $quickPost . "<br />" . $content . '</div>';

}

return $content;

}

/******************************************************************************

* Output

*****************************************************************************/

protected function showTopic($catid, $thread, $link) {

if (!$thread) {

$this->debug ( "showTopic: No messages to render" );

return '';

}

$this->debug ( "showTopic: Rendering discussion" );

// Limits the number of posts

$limit = $this->params->get ( 'limit', 25 );

// Show the first X posts, versus the last X posts

$ordering = $this->params->get ( 'ordering', 1 ); // 0=ASC, 1=DESC

$first = (int)!$ordering;

require_once (KPATH_SITE . '/funcs/view.php');

$thread = new CKunenaView ( 'view', $catid, $thread, $first, $limit+$first );

$thread->setTemplate ( "/{$this->basepath}/kunenadiscuss" );

$thread->ordering = $ordering ? 'DESC' : 'ASC';

$thread->hold = 0;

ob_start ();

$thread->display ();

$str = ob_get_contents ();

ob_end_clean ();

return $str;

}

protected function showForm($row, $catid, $thread, $subject ) {

$canPost = $this->canPost ( $catid, $thread );

if (! $canPost) {

if (! $this->_my->id) {

$this->debug ( "showForm: Public posting is not permitted, show login instead" );

$login = KunenaFactory::getLogin ();

$loginlink = $login->getLoginURL ();

$registerlink = $login->getRegistrationURL ();

$this->msg = JText::sprintf ( 'PLG_KUNENADISCUSS_LOGIN_OR_REGISTER', '"' . $loginlink . '"', '"' . $registerlink . '"' );

} else {

$this->debug ( "showForm: Unfortunately you cannot discuss this item" );

$this->msg = JText::_ ( 'PLG_KUNENADISCUSS_NO_PERMISSION_TO_POST' );

}

}

$myprofile = KunenaFactory::getUser();

$this->open = $this->params->get ( 'quickpost_open', false );

$this->name = $myprofile->getName();

ob_start ();

$this->debug ( "showForm: Rendering form" );

include (JPATH_ROOT . "/{$this->basepath}/kunenadiscuss/form.php");

$str = ob_get_contents ();

ob_end_clean ();

return $str;

}

/******************************************************************************

* Create and reply to topic

*****************************************************************************/

protected function createReference($row, $thread) {

$query = "INSERT INTO #__kunenadiscuss (content_id, thread_id) VALUES(

{$this->_db->quote($row->id)},

{$this->_db->quote($thread)})";

$this->_db->setQuery ( $query );

$this->_db->query ();

CKunenaTools::checkDatabaseError ();

}

protected function createTopic($row, $catid, $subject) {

require_once (KPATH_SITE . '/lib/kunena.posting.class.php');

$message = new CKunenaPosting ( $this->params->get ( 'topic_owner', $row->created_by ) );

$options = array();

$fields ['subject'] = $subject;

switch ($this->params->get('bbcode')) {

case 'full':

$fields ['message'] = "[article=full]{$row->id}[/article]";

break;

case 'intro':

$fields ['message'] = "[article=intro]{$row->id}[/article]";

break;

case 'link':

$fields ['message'] = "[article=link]{$row->id}[/article]";

break;

default:

$fields ['message'] = "[article]{$row->id}[/article]";

}

$fields ['time'] = JFactory::getDate(isset($row->publish_up) ? $row->publish_up : 'now')->toUnix();

$success = $message->post ( $catid, $fields, $options );

if ($success) {

$newMessageId = $message->save ();

}

// Handle errors

if (! $success || ! $newMessageId) {

$errors = $message->getErrors ();

foreach ( $errors as $field => $error ) {

$this->_app->enqueueMessage ( $field . ': ' . $error, 'error' );

}

return false;

}

// Keep a cross reference of Threads we create through this plugin

$this->createReference ( $row, $newMessageId );

// We'll need to know about the new Thread id later...

$this->debug ( __FUNCTION__ . "() end" );

return $newMessageId;

}

protected function replyTopic($row, $catid, $thread, $subject) {

if (JRequest::checkToken () == false) {

$this->_app->enqueueMessage ( JText::_ ( 'COM_KUNENA_ERROR_TOKEN' ), 'error' );

return false;

}

$this->isBanned();

$this->verifyCaptcha();

$this->checkFlood();

require_once (KPATH_SITE . '/lib/kunena.posting.class.php');

if (intval ( $thread ) == 0) {

$thread = $this->createTopic ( $row, $catid, $subject );

}

$message = new CKunenaPosting ( );

$myprofile = KunenaFactory::getUser();

$fields ['name'] = JRequest::getString ( 'name', $myprofile->getName (), 'POST' );

$fields ['email'] = JRequest::getString ( 'email', null, 'POST' );

$fields ['subject'] = $subject;

$fields ['message'] = JRequest::getString ( 'message', null, 'POST' );

$success = $message->reply ( $thread, $fields );

if ($success) {

$newMessageId = $message->save ();

}

// Handle errors

if (! $success || ! $newMessageId) {

$errors = $message->getErrors ();

foreach ( $errors as $field => $error ) {

$this->_app->enqueueMessage ( $field . ': ' . $error, 'error' );

}

return false;

}

$config = KunenaFactory::getConfig();

$holdPost = $message->get ( 'hold' );

require_once (KPATH_SITE . '/lib/kunena.link.class.php');

$message->emailToSubscribers(false, $config->allowsubscriptions && ! $holdPost, $config->mailmod || $holdPost, $config->mailadmin || $holdPost);

if ($holdPost) {

$result = JText::_ ( 'PLG_KUNENADISCUSS_PENDING_MODERATOR_APPROVAL' );

} else {

$result = JText::_ ( 'PLG_KUNENADISCUSS_MESSAGE_POSTED' );

}

// Redirect

$uri = JFactory::getURI ();

$app = JFactory::getApplication ( 'site' );

$app->redirect ( $uri->toString (), $result );

}

/******************************************************************************

* Debugging and error handling

*****************************************************************************/

protected function debug($msg, $fatal = 0) {

$debug = $this->params->get ( 'show_debug', false ); // Print out debug info!

$debugUsers = $this->params->get ( 'show_debug_userids', '' ); // Joomla Id's of Users who can see debug info

if (! $debug || ($debugUsers && ! in_array ( $this->_my->id, explode ( ',', $debugUsers ) )))

return;

if ($fatal) {

echo "<br /><span class=\"kdb-fatal\">[KunenaDiscuss FATAL: $msg ]</span>";

} else {

echo "<br />[KunenaDiscuss debug: $msg ]";

}

}

/******************************************************************************

* Permission checks

*****************************************************************************/

protected function getForumCategory($catid) {

// Default Kunena category to put new topics into

$default = intval ( $this->params->get ( 'default_category', 0 ) );

// Category pairs will be always allowed

$categoryPairs = explode ( ';', $this->params->get ( 'category_mapping', '' ) );

$categoryMap = array ();

foreach ( $categoryPairs as $pair ) {

$pair = explode ( ',', $pair );

$key = isset ( $pair [0] ) ? intval ( $pair [0] ) : 0;

$value = isset ( $pair [1] ) ? intval ( $pair [1] ) : 0;

if ($key > 0)

$categoryMap [$key] = $value;

}

// Limit plugin to the following content catgeories

$allowCategories = explode ( ',', $this->params->get ( 'allow_categories', '' ) );

// Exclude the plugin from the following categories

$denyCategories = explode ( ',', $this->params->get ( 'deny_categories', '' ) );

if (! is_numeric ( $catid ) || intval ( $catid ) == 0) {

$this->debug ( "onPrepareContent.Deny: Category {$catid} is not valid" );

return false;

}

if (!empty ( $categoryMap ) && isset ( $categoryMap [$catid] )) {

$forumcatid = $categoryMap [$catid];

if (!$forumcatid) {

$this->debug ( "onPrepareContent.Deny: Category {$catid} was disabled in the category map." );

return false;

}

$this->debug ( "onPrepareContent.Allow: Category {$catid} is in the category map using Kunena category {$forumcatid}" );

return $forumcatid;

}

if (!$default) {

$this->debug ( "onPrepareContent.Deny: There is no default Kunena category" );

return false;

}

if (in_array('0', $allowCategories ) || in_array($catid, $allowCategories )) {

$this->debug ( "onPrepareContent.Allow: Category {$catid} was listed in allow list and is using default Kunena category {$default}" );

return $default;

}

if (in_array('0', $denyCategories ) || in_array($catid, $denyCategories )) {

$this->debug ( "onPrepareContent.Deny: Category {$catid} was listed in deny list" );

return false;

}

$this->debug ( "onPrepareContent.Allow: Category {$catid} is using default Kunena category {$default}" );

return $default;

}

protected function canPost($catid, $thread) {

require_once (KPATH_SITE . '/lib/kunena.posting.class.php');

$message = new CKunenaPosting ( );

if ($thread) {

return $message->reply ( $thread );

} else {

return $message->post ( $catid );

}

}

protected function isBanned() {

require_once(KPATH_SITE . '/funcs/post.php');

$post = new CKunenaPost();

return $post->isUserBanned();

}

protected function checkFlood() {

require_once(KPATH_SITE . '/funcs/post.php');

$post = new CKunenaPost();

return $post->floodProtection();

}

protected function displayCaptcha() {

require_once(KPATH_SITE . '/funcs/post.php');

$post = new CKunenaPost();

$post->displayCaptcha();

}

protected function verifyCaptcha() {

require_once(KPATH_SITE . '/funcs/post.php');

$post = new CKunenaPost();

return $post->verifyCaptcha();

}