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<?php
/**
* ownCloud
*
* @author Frank Karlitschek
* @author Jakob Sack
* @copyright 2012 Frank Karlitschek frank@owncloud.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/*
*
* The following SQL statement is just a help for developers and will not be
* executed!
*
* CREATE TABLE `preferences` (
* `userid` VARCHAR( 255 ) NOT NULL ,
* `appid` VARCHAR( 255 ) NOT NULL ,
* `configkey` VARCHAR( 255 ) NOT NULL ,
* `configvalue` VARCHAR( 255 ) NOT NULL
* )
*
*/
/**
* This class provides an easy way for storing user preferences.
*/
class OC_Preferences{
/**
* @brief Get all users using the preferences
* @returns array with user ids
*
* This function returns a list of all users that have at least one entry
* in the preferences table.
*/
public static function getUsers(){
// No need for more comments
$query = OC_DB::prepare( 'SELECT DISTINCT( userid ) FROM *PREFIX*preferences' );
$result = $query->execute();
$users = array();
while( $row = $result->fetchRow()){
$users[] = $row["userid"];
}
return $users;
}
/**
* @brief Get all apps of a user
* @param $user user
* @returns array with app ids
*
* This function returns a list of all apps of the user that have at least
* one entry in the preferences table.
*/
public static function getApps( $user ){
// No need for more comments
$query = OC_DB::prepare( 'SELECT DISTINCT( appid ) FROM *PREFIX*preferences WHERE userid = ?' );
$result = $query->execute( array( $user ));
$apps = array();
while( $row = $result->fetchRow()){
$apps[] = $row["appid"];
}
return $apps;
}
/**
* @brief Get the available keys for an app
* @param $user user
* @param $app the app we are looking for
* @returns array with key names
*
* This function gets all keys of an app of an user. Please note that the
* values are not returned.
*/
public static function getKeys( $user, $app ){
// No need for more comments
$query = OC_DB::prepare( 'SELECT configkey FROM *PREFIX*preferences WHERE userid = ? AND appid = ?' );
$result = $query->execute( array( $user, $app ));
$keys = array();
while( $row = $result->fetchRow()){
$keys[] = $row["configkey"];
}
return $keys;
}
/**
* @brief Gets the preference
* @param $user user
* @param $app app
* @param $key key
* @param $default = null, default value if the key does not exist
* @returns the value or $default
*
* This function gets a value from the prefernces table. If the key does
* not exist the default value will be returnes
*/
public static function getValue( $user, $app, $key, $default = null ){
// Try to fetch the value, return default if not exists.
$query = OC_DB::prepare( 'SELECT configvalue FROM *PREFIX*preferences WHERE userid = ? AND appid = ? AND configkey = ?' );
$result = $query->execute( array( $user, $app, $key ));
$row = $result->fetchRow();
if($row){
return $row["configvalue"];
}else{
return $default;
}
}
/**
* @brief sets a value in the preferences
* @param $user user
* @param $app app
* @param $key key
* @param $value value
* @returns true/false
*
* Adds a value to the preferences. If the key did not exist before, it
* will be added automagically.
*/
public static function setValue( $user, $app, $key, $value ){
// Check if the key does exist
$query = OC_DB::prepare( 'SELECT configvalue FROM *PREFIX*preferences WHERE userid = ? AND appid = ? AND configkey = ?' );
$values=$query->execute(array($user,$app,$key))->fetchAll();
$exists=(count($values)>0);
if( !$exists ){
$query = OC_DB::prepare( 'INSERT INTO *PREFIX*preferences ( userid, appid, configkey, configvalue ) VALUES( ?, ?, ?, ? )' );
$query->execute( array( $user, $app, $key, $value ));
}
else{
$query = OC_DB::prepare( 'UPDATE *PREFIX*preferences SET configvalue = ? WHERE userid = ? AND appid = ? AND configkey = ?' );
$query->execute( array( $value, $user, $app, $key ));
}
}
/**
* @brief Deletes a key
* @param $user user
* @param $app app
* @param $key key
* @returns true/false
*
* Deletes a key.
*/
public static function deleteKey( $user, $app, $key ){
// No need for more comments
$query = OC_DB::prepare( 'DELETE FROM *PREFIX*preferences WHERE userid = ? AND appid = ? AND configkey = ?' );
$result = $query->execute( array( $user, $app, $key ));
return true;
}
/**
* @brief Remove app of user from preferences
* @param $user user
* @param $app app
* @returns true/false
*
* Removes all keys in appconfig belonging to the app and the user.
*/
public static function deleteApp( $user, $app ){
// No need for more comments
$query = OC_DB::prepare( 'DELETE FROM *PREFIX*preferences WHERE userid = ? AND appid = ?' );
$result = $query->execute( array( $user, $app ));
return true;
}
/**
* @brief Remove user from preferences
* @param $user user
* @returns true/false
*
* Removes all keys in appconfig belonging to the user.
*/
public static function deleteUser( $user ){
// No need for more comments
$query = OC_DB::prepare( 'DELETE FROM *PREFIX*preferences WHERE userid = ?' );
$result = $query->execute( array( $user ));
return true;
}
/**
* @brief Remove app from all users
* @param $app app
* @returns true/false
*
* Removes all keys in preferences belonging to the app.
*/
public static function deleteAppFromAllUsers( $app ){
// No need for more comments
$query = OC_DB::prepare( 'DELETE FROM *PREFIX*preferences WHERE appid = ?' );
$result = $query->execute( array( $app ));
return true;
}
}
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