Settings [WIP]

New Settings class
New Plugins::load() method
Move config.php to settings.php
MyAAC Settings will have plugin_name = 'core'
Add compat_config.php

system/libs/Settings.php

@@ -10,35 +10,172 @@
 
 class Settings implements ArrayAccess
 {
-	private $container = array();
+	static private $instance;
+	private $plugins = [];
+	private $settings = [];
+	private $cache = [];
 
-	public function offsetSet($offset, $value) {
-		if (is_null($offset)) {
-			$this->container[] = $value;
-		} else {
-			$this->container[$offset] = $value;
+	/**
+	 * @return Settings
+	 */
+	public static function getInstance()
+	{
+		if (!self::$instance) {
+			self::$instance = new self();
 		}
+
+		return self::$instance;
+	}
+
+	public function load()
+	{
+		$cache = Cache::getInstance();
+		if ($cache->enabled()) {
+			$tmp = '';
+			if ($cache->fetch('settings', $tmp)) {
+				$this->settings = unserialize($tmp);
+				return;
+			}
+		}
+
+		global $db;
+		$settings = $db->query('SELECT * FROM `' . TABLE_PREFIX . 'settings`');
+
+		if($settings->rowCount() > 0) {
+			foreach ($settings->fetchAll(PDO::FETCH_ASSOC) as $setting) {
+				$this->settings[$setting['plugin_name']][$setting['key']] = $setting['value'];
+			}
+		}
+
+		if ($cache->enabled()) {
+			$cache->set('settings', serialize($this->settings), 600);
+		}
+	}
+
+	public function offsetSet($offset, $value)
+	{
+		if (is_null($offset)) {
+			throw new \RuntimeException("Settings: You cannot set empty offset with value: $value!");
+		}
+
+		$pluginName = $offset;
+		if (strpos($offset, '.')) {
+			$explode = explode('.', $offset, 2);
+
+			$pluginName = $explode[0];
+			$key = $explode[1];
+		}
+
+		$this->loadPlugin($pluginName);
+
+		// remove whole plugin settings
+		if (!isset($key)) {
+			$this->plugins[$pluginName] = [];
+
+			// remove from settings
+			if (isset($this->settings[$pluginName])) {
+				unset($this->settings[$pluginName]);
+			}
+
+			// remove from cache
+			if (isset($this->cache[$pluginName])) {
+				unset($this->cache[$pluginName]);
+			}
+			/*foreach ($this->cache as $_key => $value) {
+				if (strpos($_key, $pluginName) !== false) {
+					unset($this->cache[$_key]);
+				}
+			}*/
+		}
+
+		$this->settings[$pluginName][$key] = $value['value'];
 	}
 
 	public function offsetExists($offset) {
-		return isset($this->container[$offset]);
+		return isset($this->settings[$offset]);
 	}
 
 	public function offsetUnset($offset) {
-		unset($this->container[$offset]);
+		unset($this->settings[$offset]);
 	}
 
+	/**
+	 * Get settings
+	 * Usage: $setting['plugin_name.key']
+	 * Example: $settings['shop_system.paypal_email']
+	 *
+	 * @param mixed $offset
+	 * @return array|mixed
+	 */
 	public function offsetGet($offset)
 	{
-		if (!isset($this->container[$offset])) {
-			$file = PLUGINS . $offset . '/settings.php';
-			if(!file_exists($file)) {
-				throw new \RuntimeException('Failed to load settings file for plugin: ' . $offset);
-			}
-
-			$this->container[$offset] = require $file;
+		// try cache hit
+		if(isset($this->cache[$offset])) {
+			return $this->cache[$offset];
 		}
 
-		return  $this->container[$offset];
+		$pluginName = $offset;
+		if (strpos($offset, '.')) {
+			$explode = explode('.', $offset, 2);
+
+			$pluginName = $explode[0];
+			$key = $explode[1];
+		}
+
+		$this->loadPlugin($pluginName);
+
+		// return specified plugin settings (all)
+		if(!isset($key)) {
+			return $this->plugins[$pluginName];
+		}
+
+		$ret = [];
+		if(isset($this->plugins[$pluginName][$key])) {
+			$ret = $this->plugins[$pluginName][$key];
+		}
+
+		if(isset($this->settings[$pluginName][$key])) {
+			$value = $this->settings[$pluginName][$key];
+
+			$ret['value'] = $value;
+		}
+		else {
+			$ret['value'] = $this->plugins[$pluginName][$key]['default'];
+		}
+
+		if(isset($ret['type'])) {
+			switch($ret['type']) {
+				case 'boolean':
+					$ret['value'] = $ret['value'] === 'true';
+					break;
+
+				case 'number':
+					$ret['value'] = (int)$ret['value'];
+					break;
+
+				default:
+					break;
+			}
+		}
+
+		$this->cache[$offset] = $ret;
+		return $ret;
+	}
+
+	private function loadPlugin($pluginName)
+	{
+		if (!isset($this->plugins[$pluginName])) {
+			if ($pluginName === 'core') {
+				$file = SYSTEM . 'settings.php';
+			} else {
+				$file = PLUGINS . $pluginName . '/settings.php';
+			}
+
+			if (!file_exists($file)) {
+				throw new \RuntimeException('Failed to load settings file for plugin: ' . $pluginName);
+			}
+
+			$this->plugins[$pluginName] = require $file;
+		}
 	}
 }