function nvweb_conditional($vars = array())
{
global $website;
global $DB;
global $current;
global $cache;
global $structure;
global $webgets;
global $webuser;
$out = array();
$webget = 'conditional';
$categories = array();
$item = new item();
if ($current['type'] == 'item') {
$item->load($current['object']->id);
$item_type = 'element';
} else {
$item_type = 'structure';
if (isset($vars['scope']) && $vars['scope'] == 'element') {
// the current path belongs to a structure category, but the template is asking for an element value,
// so we try to find the first element assigned to the current category
$categories = array();
if (!empty($current['object']->id)) {
$categories = array($current['object']->id);
}
if (isset($vars['categories'])) {
$categories = explode(',', $vars['categories']);
$categories = array_filter($categories);
// remove empty elements
}
$permission = !empty($_SESSION['APP_USER#' . APP_UNIQUE]) ? 1 : 0;
// public access / webuser based / webuser groups based
$access = 2;
$access_extra = '';
if (!empty($current['webuser'])) {
$access = 1;
if (!empty($webuser->groups)) {
$access_groups = array();
foreach ($webuser->groups as $wg) {
if (empty($wg)) {
continue;
}
$access_groups[] = 's.groups LIKE "%g' . $wg . '%"';
}
if (!empty($access_groups)) {
$access_extra = ' OR (s.access = 3 AND (' . implode(' OR ', $access_groups) . '))';
}
}
}
// get order type: PARAMETER > NV TAG PROPERTY > DEFAULT (priority given in CMS)
$order = @$_REQUEST['order'];
if (empty($order)) {
$order = @$vars['order'];
}
if (empty($order)) {
// default order: latest
$order = 'latest';
}
$orderby = nvweb_list_get_orderby($order);
$rs = NULL;
$access_extra_items = str_replace('s.', 'i.', $access_extra);
if (empty($categories)) {
// force executing the query; search in all categories
$categories = nvweb_menu_get_children(array(0));
}
// default source for retrieving items
$DB->query('
SELECT SQL_CALC_FOUND_ROWS i.id, i.permission, i.date_published, i.date_unpublish,
i.date_to_display, COALESCE(NULLIF(i.date_to_display, 0), i.date_created) as pdate,
d.text as title, i.position as position
FROM nv_items i, nv_structure s, nv_webdictionary d
WHERE i.category IN(' . implode(",", $categories) . ')
AND i.website = ' . $website->id . '
AND i.permission <= ' . $permission . '
AND (i.date_published = 0 OR i.date_published < ' . core_time() . ')
AND (i.date_unpublish = 0 OR i.date_unpublish > ' . core_time() . ')
AND s.id = i.category
AND (s.date_published = 0 OR s.date_published < ' . core_time() . ')
AND (s.date_unpublish = 0 OR s.date_unpublish > ' . core_time() . ')
AND s.permission <= ' . $permission . '
AND (s.access = 0 OR s.access = ' . $access . $access_extra . ')
AND (i.access = 0 OR i.access = ' . $access . $access_extra_items . ')
AND d.website = i.website
AND d.node_type = "item"
AND d.subtype = "title"
AND d.node_id = i.id
AND d.lang = ' . protect($current['lang']) . '
' . $orderby . '
LIMIT 1
OFFSET 0');
$rs = $DB->result();
// now we have the element against which the condition will be checked
$i = 0;
$item->load($rs[$i]->id);
$item_type = 'element';
} else {
if (!isset($vars['scope']) || $vars['scope'] == 'structure') {
$item = $current['object'];
$item_type = 'structure';
}
}
}
// get the template
$item_html = $vars['_template'];
// now, parse the conditional tags (with html source code inside)
switch ($vars['by']) {
case 'property':
$property_value = NULL;
$property_name = $vars['property_name'];
if (empty($vars['property_name'])) {
$property_name = $vars['property_id'];
}
if ($vars['property_scope'] == "element") {
$property_value = $item->property($property_name);
} else {
if ($vars['property_scope'] == "structure") {
$property = nvweb_properties(array('mode' => 'structure', 'property' => $property_name, 'return' => 'object'));
if (!empty($property)) {
$property_value = $property->value;
}
} else {
if ($vars['property_scope'] == "website") {
$property_value = $website->theme_options->{$property_name};
} else {
// no scope defined, so we have to check ELEMENT > STRUCTURE > WEBSITE (the first with a property with the given name)
// element
$property_value = $item->property($property_name);
if (!$item->property_exists($property_name) && $item_type == 'structure') {
// get the first embedded element and check find the property
$ci = nvweb_content_items(array($item->id), true, 1, true, 'priority');
$item = new item();
if (isset($ci[0])) {
$item->load($ci[0]->id);
$property_value = $item->property($property_name);
}
}
if (!$item->property_exists($property_name)) {
// structure
$property = nvweb_properties(array('mode' => 'structure', 'property' => $property_name, 'return' => 'object'));
if (!empty($property)) {
$property_value = $property->value;
} else {
// website
if (isset($website->theme_options->{$property_name})) {
$property_value = $website->theme_options->{$property_name};
} else {
$property_value = '';
}
}
}
}
}
}
// if the property is multilanguage, get the value for the current language
if (is_array($property_value)) {
$property_value = $property_value[$current['lang']];
}
// check the given condition
if (isset($vars['empty']) || isset($vars['property_empty'])) {
if (@$vars['empty'] == 'true' || @$vars['property_empty'] == 'true') {
if (empty($property_value)) {
$out = $item_html;
} else {
$out = '';
}
} else {
if (@$vars['empty'] == 'false' || @$vars['property_empty'] == 'false') {
if (!empty($property_value)) {
$out = $item_html;
} else {
$out = '';
}
}
}
} else {
if (isset($vars['property_value'])) {
$condition_value = $vars['property_value'];
switch ($vars['property_compare']) {
case '>':
case 'gt':
$condition = $property_value > $condition_value;
break;
case '<':
case 'lt':
$condition = $property_value < $condition_value;
break;
case '>=':
case '=>':
case 'gte':
$condition = $property_value >= $condition_value;
break;
case '<=':
case '=<':
case 'lte':
$condition = $property_value <= $condition_value;
break;
case 'in':
$condition_values = explode(",", $condition_value);
$condition = in_array($property_value, $condition_values);
break;
case 'nin':
$condition_values = explode(",", $condition_value);
$condition = !in_array($property_value, $condition_values);
break;
case '!=':
case 'neq':
if (is_numeric($property_value)) {
if ($condition_value == 'true' || $condition_value === true) {
$condition_value = '1';
} else {
if ($condition_value == 'false' || $condition_value === false) {
$condition_value = '0';
}
}
}
$condition = $property_value != $condition_value;
break;
case '=':
case '==':
case 'eq':
default:
if (is_numeric($property_value)) {
if ($condition_value == 'true' || $condition_value === true) {
$condition_value = '1';
} else {
if ($condition_value == 'false' || $condition_value === false) {
$condition_value = '0';
}
}
}
$condition = $property_value == $condition_value;
break;
}
if ($condition) {
$out = $item_html;
} else {
$out = '';
}
}
}
break;
case 'template':
case 'templates':
$templates = array();
if (isset($vars['templates'])) {
$templates = explode(",", $vars['templates']);
} else {
if (isset($vars['template'])) {
$templates = array($vars['template']);
}
}
if (in_array($item->template, $templates)) {
$out = $item_html;
} else {
$out = '';
}
break;
case 'section':
$section_empty = empty($item->dictionary[$current['lang']]['section-' . $vars['section']]);
if ($vars['empty'] == 'true' && $section_empty || $vars['empty'] == 'false' && !$section_empty) {
$out = $item_html;
} else {
$out = '';
}
break;
case 'access':
$access = 0;
switch ($vars['access']) {
case 3:
case 'webuser_groups':
$access = 3;
break;
case 2:
case 'not_signed_in':
$access = 2;
break;
case 1:
case 'signed_in':
$access = 1;
break;
case 0:
case 'everyone':
default:
$access = 0;
break;
}
if ($item->access == $access) {
$out = $item_html;
} else {
$out = '';
}
break;
case 'webuser':
if ($vars['signed_in'] == 'true' && !empty($webuser->id)) {
$out = $item_html;
} else {
if ($vars['signed_in'] == 'false' && empty($webuser->id)) {
$out = $item_html;
} else {
$out = '';
}
}
break;
case 'languages':
if (count($website->languages_published) >= $vars['min']) {
$out = $item_html;
} else {
if (count($website->languages_published) <= $vars['max']) {
$out = $item_html;
}
}
break;
case 'language':
if ($current['lang'] == $vars['lang']) {
$out = $item_html;
}
break;
case 'gallery':
if ($vars['empty'] == 'true') {
if (empty($item->galleries[0])) {
$out = $item_html;
}
} else {
if ($vars['empty'] == 'false') {
if (!empty($item->galleries[0])) {
$out = $item_html;
}
} else {
if (isset($vars['min']) && count($item->galleries[0]) >= intval($vars['min'])) {
$out = $item_html;
} else {
if (isset($vars['max']) && count($item->galleries[0]) <= intval($vars['max'])) {
$out = $item_html;
}
}
}
}
break;
case 'tags':
if ($vars['empty'] == 'true') {
if (empty($item->dictionary[$current['lang']]['tags'])) {
$out = $item_html;
}
} else {
if ($vars['empty'] == 'false') {
if (!empty($item->dictionary[$current['lang']]['tags'])) {
$out = $item_html;
}
}
}
break;
case 'comments':
$DB->query('
SELECT COUNT(*) as total
FROM nv_comments
WHERE website = ' . protect($website->id) . '
AND item = ' . protect($item->id) . '
AND status = 0
');
$rs = $DB->result();
$comments_count = $rs[0]->total + 0;
if (isset($vars['allowed'])) {
if ($vars['allowed'] == 'true' || $vars['allowed'] == '1' || empty($vars['allowed'])) {
// comments allowed to everybody (2) or to registered users only (1)
if ($item->comments_enabled_to == 2 || $item->comments_enabled_to == 1 && !empty($webuser->id)) {
$out = $item_html;
}
} else {
if ($vars['allowed'] == 'false') {
// comments not allowed for anyone or for webusers but there is no webuser active right now
if ($item->comments_enabled_to == 0 || $item->comments_enabled_to == 1 && empty($webuser->id)) {
$out = $item_html;
}
}
}
} else {
if (isset($vars['min']) && $comments_count >= intval($vars['min'])) {
$out = $item_html;
} else {
if (isset($vars['max']) && $comments_count <= intval($vars['max'])) {
$out = $item_html;
}
}
}
break;
default:
// unknown nvlist_conditional, discard
$out = '';
}
// return the new html code after applying the condition
return $out;
}
