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.
/**
* Cache manager.
*
* @package tool_usertours
* @copyright 2016 Andrew Nicols
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace tool_usertours;
defined('MOODLE_INTERNAL') || die();
/**
* Cache manager.
*
* @copyright 2016 Andrew Nicols
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class cache {
/**
* @var CACHENAME_TOUR The name of the cache used for storing tours.
*/
const CACHENAME_TOUR = 'tourdata';
/**
* @var CACHEKEY_TOUR The name of the key used for storing tours.
*/
const CACHEKEY_TOUR = 'tours';
/**
* @var CACHENAME_STEP The name of the cache used for storing steps.
*/
const CACHENAME_STEP = 'stepdata';
/**
* Fetch all enabled tours.
*/
public static function get_enabled_tourdata() {
global $DB;
$cache = \cache::make('tool_usertours', self::CACHENAME_TOUR);
$data = $cache->get(self::CACHEKEY_TOUR);
if ($data === false) {
$sql = <<get_records_sql($sql);
$cache->set('tours', $data);
}
return $data;
}
/**
* Fetch all enabled tours matching the specified target.
*
* @param moodle_url $targetmatch The URL to match.
*/
public static function get_matching_tourdata(\moodle_url $targetmatch) {
$tours = self::get_enabled_tourdata();
// Attempt to determine whether this is the front page.
// This is a special case because the frontpage uses a shortened page path making it difficult to detect exactly.
$isfrontpage = $targetmatch->compare(new \moodle_url('/'), URL_MATCH_BASE);
$isdashboard = $targetmatch->compare(new \moodle_url('/my/'), URL_MATCH_BASE);
$ismycourses = $targetmatch->compare(new \moodle_url('/my/courses.php'), URL_MATCH_BASE);
$possiblematches = [];
if ($isfrontpage) {
$possiblematches = ['FRONTPAGE', 'FRONTPAGE_MY', 'FRONTPAGE_MYCOURSES', 'FRONTPAGE_MY_MYCOURSES'];
} else if ($isdashboard) {
$possiblematches = ['MY', 'FRONTPAGE_MY', 'MY_MYCOURSES', 'FRONTPAGE_MY_MYCOURSES'];
} else if ($ismycourses) {
$possiblematches = ['MYCOURSES', 'FRONTPAGE_MYCOURSES', 'MY_MYCOURSES', 'FRONTPAGE_MY_MYCOURSES'];
}
$target = $targetmatch->out_as_local_url();
return array_filter($tours, function($tour) use ($possiblematches, $target) {
if (in_array($tour->pathmatch, $possiblematches)) {
return true;
}
$pattern = preg_quote($tour->pathmatch, '@');
if (strpos($pattern, '%') !== false) {
// The URL match format is something like: /my/%.
// We need to find all the URLs which match the first part of the pattern.
$pattern = str_replace('%', '.*', $pattern);
} else {
// The URL match format is something like: /my/courses.php.
// We need to find all the URLs which match with whole pattern.
$pattern .= '$';
}
return !!preg_match("@{$pattern}@", $target);
});
}
/**
* Notify of changes to any tour to clear the tour cache.
*/
public static function notify_tour_change() {
$cache = \cache::make('tool_usertours', self::CACHENAME_TOUR);
$cache->delete(self::CACHEKEY_TOUR);
}
/**
* Fetch the tour data for the specified tour.
*
* @param int $tourid The ID of the tour to fetch steps for
*/
public static function get_stepdata($tourid) {
global $DB;
$cache = \cache::make('tool_usertours', self::CACHENAME_STEP);
$data = $cache->get($tourid);
if ($data === false) {
$sql = <<get_records_sql($sql, ['tourid' => $tourid]);
$cache->set($tourid, $data);
}
return $data;
}
/**
* Notify of changes to any step to clear the step cache for that tour.
*
* @param int $tourid The ID of the tour to clear the step cache for
*/
public static function notify_step_change($tourid) {
$cache = \cache::make('tool_usertours', self::CACHENAME_STEP);
$cache->delete($tourid);
}
}