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<?php
namespace Zotlabs\Lib;
class Config {
/**
* @brief Loads the hub's configuration from database to a cached storage.
*
* Retrieve a category ($family) of config variables from database to a cached
* storage in the global App::$config[$family].
*
* @param string $family
* The category of the configuration value
*/
static public function Load($family) {
if(! array_key_exists($family, \App::$config))
\App::$config[$family] = array();
if(! array_key_exists('config_loaded', \App::$config[$family])) {
$r = q("SELECT * FROM config WHERE cat = '%s'", dbesc($family));
if($r !== false) {
if($r) {
foreach($r as $rr) {
$k = $rr['k'];
\App::$config[$family][$k] = $rr['v'];
}
}
\App::$config[$family]['config_loaded'] = true;
}
}
}
/**
* @brief Sets a configuration value for the hub.
*
* Stores a config value ($value) in the category ($family) under the key ($key).
*
* @param string $family
* The category of the configuration value
* @param string $key
* The configuration key to set
* @param mixed $value
* The value to store in the configuration
* @return mixed
* Return the set value, or false if the database update failed
*/
static public function Set($family, $key, $value) {
// manage array value
$dbvalue = ((is_array($value)) ? serialize($value) : $value);
$dbvalue = ((is_bool($dbvalue)) ? intval($dbvalue) : $dbvalue);
if(self::Get($family, $key) === false || (! self::get_from_storage($family, $key))) {
$ret = q("INSERT INTO config ( cat, k, v ) VALUES ( '%s', '%s', '%s' ) ",
dbesc($family),
dbesc($key),
dbesc($dbvalue)
);
if($ret) {
\App::$config[$family][$key] = $value;
$ret = $value;
}
return $ret;
}
$ret = q("UPDATE config SET v = '%s' WHERE cat = '%s' AND k = '%s'",
dbesc($dbvalue),
dbesc($family),
dbesc($key)
);
if($ret) {
\App::$config[$family][$key] = $value;
$ret = $value;
}
return $ret;
}
/**
* @brief Get a particular config variable given the category name ($family)
* and a key.
*
* Get a particular config variable from the given category ($family) and the
* $key from a cached storage in App::$config[$family]. If a key is found in the
* DB but does not exist in local config cache, pull it into the cache so we
* do not have to hit the DB again for this item.
*
* Returns false if not set.
*
* @param string $family
* The category of the configuration value
* @param string $key
* The configuration key to query
* @param string $default (optional) default false
* @return mixed Return value or false on error or if not set
*/
static public function Get($family, $key, $default = false) {
if((! array_key_exists($family, \App::$config)) || (! array_key_exists('config_loaded', \App::$config[$family])))
self::Load($family);
if(array_key_exists('config_loaded', \App::$config[$family])) {
if(! array_key_exists($key, \App::$config[$family])) {
return $default;
}
return ((! is_array(\App::$config[$family][$key])) && (preg_match('|^a:[0-9]+:{.*}$|s', \App::$config[$family][$key]))
? unserialize(\App::$config[$family][$key])
: \App::$config[$family][$key]
);
}
return $default;
}
/**
* @brief Deletes the given key from the hub's configuration database.
*
* Removes the configured value from the stored cache in App::$config[$family]
* and removes it from the database.
*
* @param string $family
* The category of the configuration value
* @param string $key
* The configuration key to delete
* @return mixed
*/
static public function Delete($family, $key) {
$ret = false;
if(array_key_exists($family, \App::$config) && array_key_exists($key, \App::$config[$family]))
unset(\App::$config[$family][$key]);
$ret = q("DELETE FROM config WHERE cat = '%s' AND k = '%s'",
dbesc($family),
dbesc($key)
);
return $ret;
}
/**
* @brief Returns a value directly from the database configuration storage.
*
* This function queries directly the database and bypasses the chached storage
* from get_config($family, $key).
*
* @param string $family
* The category of the configuration value
* @param string $key
* The configuration key to query
* @return mixed
*/
static private function get_from_storage($family,$key) {
$ret = q("SELECT * FROM config WHERE cat = '%s' AND k = '%s' LIMIT 1",
dbesc($family),
dbesc($key)
);
return $ret;
}
}
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