/**

* Инициализация Ajax-части чата

* @return null

*/

public function init() {

lang::o()->get("blocks/chat");

$id = (int) $_GET['id'];

switch ($_GET["act"]) {

case "text":

$this->get_text($id);

die();

break;

case "delete":

$this->delete($id);

ok();

break;

case "truncate":

$this->truncate();

die(lang::o()->v('chat_no_messages'));

break;

case "save":

$this->save($_POST['text'], $id);

ok();

break;

default:

$this->show((int) $_GET['time'], (bool) $_GET['prev']);

break;

}

}

/**

* Удаление сообщения из чата

* @param int $id ID сообщения

* @return null

* @throws EngineException

*/

public function delete($id) {

$id = (int) $id;

check_formkey();

users::o()->check_perms('del_chat');

db::o()->p($id, users::o()->v('id'))->delete('chat', 'WHERE id=?' .

(!users::o()->perm('del_chat', 2) ? " AND poster_id=?" : "") . ' LIMIT 1');

$this->delete_logs($id);

}

/**

* Запись в логи чата

* @param int $id ID сообщения

* @return null

*/

protected function delete_logs($id = 0) {

$id = (int) $id;

if (!db::o()->affected_rows() || !config::o()->v('chat_clearlogs'))

return;

$t = time() - intval(config::o()->v('chat_clearlogs'));

db::o()->p($t)->delete('chat_deleted', 'WHERE time<=?');

db::o()->insert(array('id' => $id, 'time' => time()), 'chat_deleted');

if (!$id && db::o()->affected_rows() < 1)

db::o()->update(array('time' => time()), 'chat_deleted', 'WHERE id=0 LIMIT 1');

}

/**

* Очистка сообщений чата

* @return null

* @throws EngineException

*/

public function truncate() {

check_formkey();

users::o()->check_perms('del_chat', 3);

db::o()->truncate_table('chat');

$this->delete_logs();

}

/**

* Сохранение сообщения чата

* @param string $text

* @param int $id ID сообщения

* @return null

* @throws EngineException

*/

public function save($text, $id = null) {

check_formkey();

$text = trim($text);

if (!$text)

return;

$id = (int) $id;

if (!$id)

users::o()->check_perms('chat', 2, 2);

else

users::o()->check_perms('edit_chat');

$update = array();

$update["text"] = $text;

$update["edited_time"] = time();

try {

plugins::o()->pass_data(array('update' => &$update,

'id' => $id), true)->run_hook('chat_save');

} catch (PReturn $e) {

return $e->r();

}

if (!$id) {

$update["poster_id"] = users::o()->v('id') ? users::o()->v('id') : -1;

$update["posted_time"] = time();

db::o()->delete("chat_deleted", "WHERE id=0");

db::o()->insert($update, 'chat');

}

else

db::o()->p($id, users::o()->v('id'))->update($update, 'chat', 'WHERE id=?' .

(!users::o()->perm('edit_chat', 2) ? " AND poster_id=?" : "") . ' LIMIT 1');

}

/**

* Вывод неформатированного текста сообщения для редактирования

* @param int $id ID сообщения

* @return null

*/

protected function get_text($id) {

users::o()->check_perms('edit_chat');

$id = (int) $id;

$q = db::o()->p($id)->query("SELECT text FROM chat WHERE id=? LIMIT 1");

list ($text) = db::o()->fetch_row($q);

print($text);

}

/**

* Форматирование сообщения

* @param array $row массив данных сообщения

* @return null

*/

public function chat_mf(&$row) {

$t = $row["text"];

$cmds = 'private|me|hello|bye';

preg_match('/^\/(' . $cmds . ')\s*(?:\((.+)(?:,\s*([0-9]+))?\)\s+)?(.*)$/siu', $t, $matches);

if (!$matches)

return;

list(, $cmd, $p1, $p2, $t) = $matches;

$u = null;

try {

plugins::o()->pass_data(array('row' => &$row,

'matches' => $matches), true)->run_hook('chat_formatting');

} catch (PReturn $e) {

return $e->r();

}

switch ($cmd) {

case "private":

if (!users::o()->check_login($p1))

return;

if (!$row['poster_id'] || !$p1 || mb_strtolower($row['username']) == mb_strtolower($p1))

return;

if (!users::o()->perm('chat_sprivate') &&

users::o()->v('username_lower') != mb_strtolower($p1) &&

users::o()->v('id') != $row['poster_id']) {

$row["text"] = '';

return;

}

if (users::o()->v('id') == $row['poster_id']) {

$cmd = 'fprivate';

$u = $p1;

}

case "me":

if (!$u)

$u = smarty_group_color_link($row["username"], $row["group"]);

$row["text"] = sprintf(lang::o()->v("chat_" . $cmd . "_saying"), $u, $t);

break;

case "hello":

case "bye":

$row["text"] = sprintf(lang::o()->v("chat_" . $cmd . "_saying"), smarty_group_color_link($row["username"], $row["group"]));

break;

}

$row["spec"] = true;

}

/**

* Вывод сообщений чата

* @param int $time время последней проверки или ID сообщения

* @param bool $prev показать пред. сообщения, до этого ID

* @return null

*/

public function show($time, $prev = false) {

$time = (int) $time;

users::o()->check_perms('chat', 2, 2);

if ($time && !$prev) {

$r = db::o()->p($time)->query('SELECT id FROM chat_deleted WHERE time>=?');

$del = "";

while (list($i) = db::o()->fetch_row($r))

$del .= ( $del ? "," : "") . $i;

tpl::o()->assign('deleted', $del);

}

$orderby = " ORDER BY c.posted_time DESC ";

$limit = $orderby . (config::o()->v('chat_maxmess') ? " LIMIT " . config::o()->v('chat_maxmess') : "");

if ($prev) {

$where = ' WHERE c.id < ?' . $limit;

tpl::o()->assign('prev', true);

}

else

$where = $time ? ' WHERE c.edited_time>=?' . $orderby : $limit;

$r = db::o()->p($time)->query('SELECT c.*, u.username, u.group FROM chat AS c

LEFT JOIN users AS u ON u.id=c.poster_id ' . $where);

tpl::o()->assign('rows', array_reverse(db::o()->fetch2array($r)));

tpl::o()->register_modifier('chat_mf', array($this, 'chat_mf'));

tpl::o()->display('chat/chat.tpl');

}