muha

class ControllerCommonSeoPro extends Controller {
private $cache_data = null;

public function __construct($registry) {
parent::__construct($registry);
$this->cache_data = $this->cache->get('seo_pro');
if (!$this->cache_data) {
$query = $this->db->query("SELECT LOWER(`keyword`) as 'keyword', `query` FROM " . DB_PREFIX . "url_alias");
$this->cache_data = array();
foreach ($query->rows as $row) {
$this->cache_data['keywords'][$row['keyword']] = $row['query'];
$this->cache_data['queries'][$row['query']] = $row['keyword'];
}
$this->cache->set('seo_pro', $this->cache_data);
}
}

public function index() {

// Add rewrite to url class
if ($this->config->get('config_seo_url')) {
$this->url->addRewrite($this);
} else {
return;
}

// Decode URL
if (!isset($this->request->get['_route_'])) {
$this->validate();
} else {
$route_ = $route = $this->request->get['_route_'];
unset($this->request->get['_route_']);
$parts = explode('/', trim(utf8_strtolower($route), '/'));
list($last_part) = explode('.', array_pop($parts));
array_push($parts, $last_part);

$rows = array();
foreach ($parts as $keyword) {
if (isset($this->cache_data['keywords'][$keyword])) {
$rows[] = array('keyword' => $keyword, 'query' => $this->cache_data['keywords'][$keyword]);
}
}

if (count($rows) == sizeof($parts)) {
$queries = array();
foreach ($rows as $row) {
$queries[utf8_strtolower($row['keyword'])] = $row['query'];
}

reset($parts);
foreach ($parts as $part) {
$url = explode('=', $queries[$part], 2);

if ($url[0] == 'category_id') {
if (!isset($this->request->get['path'])) {
$this->request->get['path'] = $url[1];
} else {
$this->request->get['path'] .= '_' . $url[1];
}
} elseif (count($url) > 1) {
$this->request->get[$url[0]] = $url[1];
}
}
} else {
$this->request->get['route'] = 'error/not_found';
}

if (isset($this->request->get['product_id'])) {
$this->request->get['route'] = 'product/product';
if (!isset($this->request->get['path'])) {
$path = $this->getPathByProduct($this->request->get['product_id']);
if ($path) $this->request->get['path'] = $path;
}
} elseif (isset($this->request->get['path'])) {
$this->request->get['route'] = 'product/category';
} elseif (isset($this->request->get['manufacturer_id'])) {
$this->request->get['route'] = 'product/manufacturer/info';
} elseif (isset($this->request->get['information_id'])) {
$this->request->get['route'] = 'information/information';
} elseif(isset($this->cache_data['queries'][$route_])) {
header($this->request->server['SERVER_PROTOCOL'] . ' 301 Moved Permanently');
$this->response->redirect($this->cache_data['queries'][$route_]);
} else {
if (isset($queries[$parts[0]])) {
$this->request->get['route'] = $queries[$parts[0]];
}
}


$this->validate();

if (isset($this->request->get['route'])) {
return $this->forward($this->request->get['route']);
}
}
}

public function rewrite($link) {
if (!$this->config->get('config_seo_url')) return $link;

$seo_url = '';

$component = parse_url(str_replace('&', '&', $link));

$data = array();
parse_str($component['query'], $data);

$route = $data['route'];
unset($data['route']);

switch ($route) {
case 'product/product':
if (isset($data['product_id'])) {
$tmp = $data;
$data = array();
if ($this->config->get('config_seo_url_include_path')) {
$data['path'] = $this->getPathByProduct($tmp['product_id']);
if (!$data['path']) return $link;
}
$data['product_id'] = $tmp['product_id'];
if (isset($tmp['tracking'])) {
$data['tracking'] = $tmp['tracking'];
}
}
break;

case 'product/category':
if (isset($data['path'])) {
$category = explode('_', $data['path']);
$category = end($category);
$data['path'] = $this->getPathByCategory($category);
if (!$data['path']) return $link;
}
break;

case 'product/product/review':
case 'information/information/info':
return $link;
break;

default:
break;
}

if ($component['scheme'] == 'https') {
$link = $this->config->get('config_ssl');
} else {
$link = $this->config->get('config_url');
}

$link .= 'index.php?route=' . $route;

if (count($data)) {
$link .= '&' . urldecode(http_build_query($data, '', '&'));
}

$queries = array();
$is_news = false;
foreach ($data as $key => $value) {
switch ($key) {
case 'product_id':
case 'manufacturer_id':
case 'category_id':
case 'information_id':
$queries[] = $key . '=' . $value;
unset($data[$key]);
$postfix = 1;
break;

case 'news_id':
$queries[] = $key . '=' . $value;
unset($data[$key]);
$postfix = 1;
$is_news = true;
break;

case 'path':
$categories = explode('_', $value);
foreach ($categories as $category) {
$queries[] = 'category_id=' . $category;
}
unset($data[$key]);
break;

default:
break;
}
}

if(empty($queries)) {
$queries[] = $route;
}

$rows = array();
foreach($queries as $query) {
if(isset($this->cache_data['queries'][$query])) {
$rows[] = array('query' => $query, 'keyword' => $this->cache_data['queries'][$query]);
}
}

if(count($rows) == count($queries)) {
$aliases = array();
foreach($rows as $row) {
$aliases[$row['query']] = $row['keyword'];
}
foreach($queries as $query) {
if ($is_news) {
$seo_url .= '/news/' . rawurlencode($aliases[$query]);
} else {
$seo_url .= '/' . rawurlencode($aliases[$query]);
}
}
}

if ($seo_url == '') return $link;

$seo_url = trim($seo_url, '/');

if ($component['scheme'] == 'https') {
$seo_url = $this->config->get('config_ssl') . $seo_url;
} else {
$seo_url = $this->config->get('config_url') . $seo_url;
}

if (isset($postfix)) {
$seo_url .= trim($this->config->get('config_seo_url_postfix'));
} else {
$seo_url .= '/';
}

if(substr($seo_url, -2) == '//') {
$seo_url = substr($seo_url, 0, -1);
}

if (count($data)) {
$seo_url .= '?' . urldecode(http_build_query($data, '', '&'));
}

return $seo_url;
}

private function getPathByProduct($product_id) {
$product_id = (int)$product_id;
if ($product_id < 1) return false;

static $path = null;
if (!is_array($path)) {
$path = $this->cache->get('product.seopath');
if (!is_array($path)) $path = array();
}

if (!isset($path[$product_id])) {
$query = $this->db->query("SELECT category_id FROM " . DB_PREFIX . "product_to_category WHERE product_id = '" . $product_id . "' ORDER BY main_category DESC LIMIT 1");

$path[$product_id] = $this->getPathByCategory($query->num_rows ? (int)$query->row['category_id'] : 0);

$this->cache->set('product.seopath', $path);
}

return $path[$product_id];
}

private function getPathByCategory($category_id) {
$category_id = (int)$category_id;
if ($category_id < 1) return false;

static $path = null;
if (!is_array($path)) {
$path = $this->cache->get('category.seopath');
if (!is_array($path)) $path = array();
}

if (!isset($path[$category_id])) {
$max_level = 10;

$sql = "SELECT CONCAT_WS('_'";
for ($i = $max_level-1; $i >= 0; --$i) {
$sql .= ",t$i.category_id";
}
$sql .= ") AS path FROM " . DB_PREFIX . "category t0";
for ($i = 1; $i < $max_level; ++$i) {
$sql .= " LEFT JOIN " . DB_PREFIX . "category t$i ON (t$i.category_id = t" . ($i-1) . ".parent_id)";
}
$sql .= " WHERE t0.category_id = '" . $category_id . "'";

$query = $this->db->query($sql);

$path[$category_id] = $query->num_rows ? $query->row['path'] : false;

$this->cache->set('category.seopath', $path);
}

return $path[$category_id];
}

private function validate() {
if (isset($this->request->get['route']) && $this->request->get['route'] == 'error/not_found') {
return;
}
if(empty($this->request->get['route'])) {
$this->request->get['route'] = 'common/home';
}

if (isset($this->request->server['HTTP_X_REQUESTED_WITH']) && strtolower($this->request->server['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest') {
return;
}

if (isset($this->request->server['HTTPS']) && (($this->request->server['HTTPS'] == 'on') || ($this->request->server['HTTPS'] == '1'))) {
$config_ssl = substr($this->config->get('config_ssl'), 0, $this->strpos_offset('/', $this->config->get('config_ssl'), 3) + 1);
$url = str_replace('&', '&', $config_ssl . ltrim($this->request->server['REQUEST_URI'], '/'));
$seo = str_replace('&', '&', $this->url->link($this->request->get['route'], $this->getQueryString(array('route')), 'SSL'));
} else {
$config_url = substr($this->config->get('config_url'), 0, $this->strpos_offset('/', $this->config->get('config_url'), 3) + 1);
$url = str_replace('&', '&', $config_url . ltrim($this->request->server['REQUEST_URI'], '/'));
$seo = str_replace('&', '&', $this->url->link($this->request->get['route'], $this->getQueryString(array('route')), 'NONSSL'));
}

if (rawurldecode($url) != rawurldecode($seo)) {
header($this->request->server['SERVER_PROTOCOL'] . ' 301 Moved Permanently');

$this->response->redirect($seo);
}
}

private function strpos_offset($needle, $haystack, $occurrence) {
// explode the haystack
$arr = explode($needle, $haystack);
// check the needle is not out of bounds
switch($occurrence) {
case $occurrence == 0:
return false;
case $occurrence > max(array_keys($arr)):
return false;
default:
return strlen(implode($needle, array_slice($arr, 0, $occurrence)));
}
}

private function getQueryString($exclude = array()) {
if (!is_array($exclude)) {
$exclude = array();
}

return urldecode(http_build_query(array_diff_key($this->request->get, array_flip($exclude))));
}
}
?>