Implementation of OC_APPCONFIG, OC_CONFIG and OC_PREFERENCES

3 files changed, 210 insertions, 29 deletions

diff --git a/lib/appconfig.php b/lib/appconfig.php
index e8c6960e674..3c37a9d77d5 100644
--- a/lib/appconfig.php
+++ b/lib/appconfig.php
@@ -46,8 +46,16 @@ class OC_APPCONFIG{
 	 * entry in the appconfig table.
 	 */
 	public static function getApps(){
-		// TODO: write function
-		return array();
+		// No magic in here!
+		$query = OC_DB::prepare( 'SELECT DISTINCT( `appid` ) FROM `*PREFIX*appconfig`' );
+		$result = $query->execute();
+
+		$apps = array();
+		while( $result->fetchRow()){
+			$apps[] = $row["appid"];
+		}
+
+		return $apps;
 	}
 
 	/**
@@ -59,8 +67,16 @@ class OC_APPCONFIG{
 	 * not returned.
 	 */
 	public static function getKeys( $app ){
-		// TODO: write function
-		return array();
+		// No magic in here as well
+		$query = OC_DB::prepare( 'SELECT `key` FROM `*PREFIX*appconfig` WHERE `appid` = ?' );
+		$result = $query->execute( $app );
+
+		$keys = array();
+		while( $result->fetchRow()){
+			$keys[] = $row["key"];
+		}
+
+		return $keys;
 	}
 
 	/**
@@ -74,8 +90,17 @@ class OC_APPCONFIG{
 	 * not exist the default value will be returnes
 	 */
 	public static function getValue( $app, $key, $default = null ){
-		// OC_DB::query( $query);
-		return $default;
+		// At least some magic in here :-)
+		$query = OC_DB::prepare( 'SELECT `value` FROM `*PREFIX*appconfig` WHERE `appid` = ? AND `key` = ?' );
+		$result = $query->execute( $app, $key );
+
+		if( !$result->numRows()){
+			return $default;
+		}
+
+		$row = $result->fetchRow();
+
+		return $row["value"];
 	}
 
 	/**
@@ -88,8 +113,18 @@ class OC_APPCONFIG{
 	 * Sets a value. If the key did not exist before it will be created.
 	 */
 	public static function setValue( $app, $key, $value ){
-		// TODO: write function
-		return true;
+		// Does the key exist? yes: update. No: insert
+		$exists = self::getValue( $app, $key, null );
+
+		// null: does not exist
+		if( is_null( $exists )){
+			$query = OC_DB::prepare( 'INSERT INTO `*PREFIX*appconfig` ( `appid`, `key`, `value` ) VALUES( ?, ?, ? )' );
+			$query->execute( $app, $key, $value );
+		}
+		else{
+			$query = OC_DB::prepare( 'UPDATE `*PREFIX*appconfig` SET `value` = ? WHERE `appid` = ? AND `key` = ?' );
+			$query->execute( $value, $app, $key );
+		}
 	}
 
 	/**
@@ -101,7 +136,10 @@ class OC_APPCONFIG{
 	 * Deletes a key.
 	 */
 	public static function deleteKey( $app, $key ){
-		// TODO: write function
+		// Boring!
+		$query = OC_DB::prepare( 'DELETE FROM `*PREFIX*appconfig` WHERE `appid` = ? AND `key` = ?' );
+		$query->execute( $app, $key );
+
 		return true;
 	}
 
@@ -113,7 +151,10 @@ class OC_APPCONFIG{
 	 * Removes all keys in appconfig belonging to the app.
 	 */
 	public static function deleteApp( $app ){
-		// TODO: write function
+		// Nothing special
+		$query = OC_DB::prepare( 'DELETE FROM `*PREFIX*appconfig` WHERE `appid` = ?' );
+		$query->execute( $app );
+
 		return true;
 	}
 }
diff --git a/lib/config.php b/lib/config.php
index 3e660a5fb55..1b7783403ca 100644
--- a/lib/config.php
+++ b/lib/config.php
@@ -53,8 +53,9 @@ class OC_CONFIG{
 	 * does not return the values.
 	 */
 	public static function getKeys(){
-		// TODO: write function
-		return array();
+		self::readData();
+
+		return array_keys( self::$cache );
 	}
 
 	/**
@@ -67,7 +68,12 @@ class OC_CONFIG{
 	 * $default will be returned.
 	 */
 	public static function getValue( $key, $default = null ){
-		// TODO: write function
+		self::readData();
+
+		if( array_key_exists( $key, self::$cache )){
+			return self::$cache[$key];
+		}
+
 		return $default;
 	}
 
@@ -81,7 +87,14 @@ class OC_CONFIG{
 	 * not be written, false will be returned.
 	 */
 	public static function setValue( $key, $value ){
-		// TODO: write function
+		self::readData();
+
+		// Add change
+		self::$cache[$key] = $value;
+
+		// Write changes
+		self::writeData();
+
 		return true;
 	}
 
@@ -94,7 +107,79 @@ class OC_CONFIG{
 	 * write access to config.php, the function will return false.
 	 */
 	public static function deleteKey( $key ){
-		// TODO: write function
+		self::readData();
+
+		if( array_key_exists( $key, self::$cache )){
+			// Delete key from cache
+			unset( self::$cache[$key] );
+
+			// Write changes
+			self::writeData();
+		}
+
+		return true;
+	}
+
+	/**
+	 * @brief Loads the config file
+	 * @returns true/false
+	 *
+	 * Reads the config file and saves it to the cache
+	 */
+	private static function readData( $key ){
+		if( !self::$init ){
+			return true;
+		}
+
+		global $SERVERROOT;
+
+		if( !file_exists( "$SERVERROOT/config/config.php" )){
+			return false;
+		}
+
+		// Include the file, save the data from $CONFIG
+		include( "$SERVERROOT/config/config.php" );
+		self::$cache = $CONFIG;
+
+		// We cached everything
+		self::$init = true;
+
+		return true;
+	}
+
+	/**
+	 * @brief Writes the config file
+	 * @returns true/false
+	 *
+	 * Saves the config to the config file.
+	 *
+	 * Known flaws: Strings are not escaped properly
+	 */
+	public static function writeData( $key ){
+		// We need the serverroot path
+		global $SERVERROOT;
+
+		// Create a php file ...
+		$content = "<?php\n\$CONFIG = array(\n";
+
+		foreach( self::$cache as $key => $value ){
+			if( is_bool( $value )){
+				$value = $value ? 'true' : 'false';
+				$content .= "\"$key\" => $value,\n";
+			}
+			elseif( is_numeric( $value )){
+				$content .= "\"$key\" => $value,\n";
+			}
+			else{
+				$value = str_replace( "'", "\\'", $value );
+				$configContent .= "\"$key\" => '$value',\n";
+			}
+		}
+		$content .= ");\n?>\n";
+
+		// Write the file
+		file_put_contents( "$SERVERROOT/config/config.php", $content );
+
 		return true;
 	}
 }
diff --git a/lib/preferences.php b/lib/preferences.php
index a7a2911cac7..0bc4092de4b 100644
--- a/lib/preferences.php
+++ b/lib/preferences.php
@@ -46,8 +46,16 @@ class OC_PREFERENCES{
 	 * in the preferences table.
 	 */
 	public static function getUsers(){
-		// TODO: write function
-		return array();
+		// No need for more comments
+		$query = OC_DB::prepare( 'SELECT DISTINCT( `userid` ) FROM `*PREFIX*preferences`' );
+		$result = $query->execute();
+
+		$users = array();
+		while( $result->fetchRow()){
+			$users[] = $row["userid"];
+		}
+
+		return $users;
 	}
 
 	/**
@@ -59,8 +67,16 @@ class OC_PREFERENCES{
 	 * one entry in the preferences table.
 	 */
 	public static function getApps( $user ){
-		// TODO: write function
-		return array();
+		// No need for more comments
+		$query = OC_DB::prepare( 'SELECT DISTINCT( `appid` ) FROM `*PREFIX*preferences` WHERE `userid` = ?' );
+		$result = $query->execute( $user );
+
+		$apps = array();
+		while( $result->fetchRow()){
+			$apps[] = $row["appid"];
+		}
+
+		return $apps;
 	}
 
 	/**
@@ -73,8 +89,16 @@ class OC_PREFERENCES{
 	 * values are not returned.
 	 */
 	public static function getKeys( $user, $app ){
-		// TODO: write function
-		return array();
+		// No need for more comments
+		$query = OC_DB::prepare( 'SELECT `key` FROM `*PREFIX*preferences` WHERE `userid` = ? AND `appid` = ?' );
+		$result = $query->execute( $user, $app );
+
+		$keys = array();
+		while( $result->fetchRow()){
+			$keys[] = $row["key"];
+		}
+
+		return $keys;
 	}
 
 	/**
@@ -89,8 +113,17 @@ class OC_PREFERENCES{
 	 * not exist the default value will be returnes
 	 */
 	public static function getValue( $user, $app, $key, $default = null ){
-		// OC_DB::query( $query);
-		return $default;
+		// Try to fetch the value, return default if not exists.
+		$query = OC_DB::prepare( 'SELECT `value` FROM `*PREFIX*preferences` WHERE `userid` = ? AND `appid` = ? AND `key` = ?' );
+		$result = $query->execute( $user, $app, $key );
+
+		if( !$result->numRows()){
+			return $default;
+		}
+
+		$row = $result->fetchRow();
+
+		return $row["value"];
 	}
 
 	/**
@@ -105,8 +138,18 @@ class OC_PREFERENCES{
 	 * will be added automagically.
 	 */
 	public static function setValue( $user, $app, $key, $value ){
-		// TODO: write function
-		return true;
+		// Check if the key does exist
+		$exists = self::getValue( $user, $app, $key, null );
+
+		// null: does not exist. Insert.
+		if( is_null( $exists )){
+			$query = OC_DB::prepare( 'INSERT INTO `*PREFIX*preferences` ( `userid`, `appid`, `key`, `value` ) VALUES( ?, ?, ?, ? )' );
+			$query->execute( $user, $app, $key, $value );
+		}
+		else{
+			$query = OC_DB::prepare( 'UPDATE `*PREFIX*preferences` SET `value` = ? WHERE `userid` = ? AND `appid` = ? AND `key` = ?' );
+			$query->execute( $value, $user, $app, $key );
+		}
 	}
 
 	/**
@@ -119,7 +162,10 @@ class OC_PREFERENCES{
 	 * Deletes a key.
 	 */
 	public static function deleteKey( $user, $app, $key ){
-		// TODO: write function
+		// No need for more comments
+		$query = OC_DB::prepare( 'DELETE FROM `*PREFIX*preferences` WHERE `userid` = ? AND `appid` = ? AND `key` = ?' );
+		$result = $query->execute( $user, $app, $key );
+
 		return true;
 	}
 
@@ -132,7 +178,10 @@ class OC_PREFERENCES{
 	 * Removes all keys in appconfig belonging to the app and the user.
 	 */
 	public static function deleteApp( $user, $app ){
-		// TODO: write function
+		// No need for more comments
+		$query = OC_DB::prepare( 'DELETE FROM `*PREFIX*preferences` WHERE `userid` = ? AND `appid` = ?' );
+		$result = $query->execute( $user, $app );
+
 		return true;
 	}
 
@@ -144,7 +193,10 @@ class OC_PREFERENCES{
 	 * Removes all keys in appconfig belonging to the user.
 	 */
 	public static function deleteUser( $user ){
-		// TODO: write function
+		// No need for more comments
+		$query = OC_DB::prepare( 'DELETE FROM `*PREFIX*preferences` WHERE `userid` = ?' );
+		$result = $query->execute( $user );
+
 		return true;
 	}
 
@@ -156,7 +208,10 @@ class OC_PREFERENCES{
 	 * Removes all keys in preferences belonging to the app.
 	 */
 	public static function deleteAppFromAllUsers( $app ){
-		// TODO: write function
+		// No need for more comments
+		$query = OC_DB::prepare( 'DELETE FROM `*PREFIX*preferences` WHERE `appid` = ?' );
+		$result = $query->execute( $app );
+
 		return true;
 	}
 }