event system and plugins

system/Plugins.php

@@ -0,0 +1,93 @@
+<?php
+
+namespace Typemill;
+
+class Plugins
+{	
+	public function load()
+	{
+		$pluginFolder = $this->scanPluginFolder();
+		$classNames = array();
+
+		/* iterate over plugin folders */
+		foreach($pluginFolder as $plugin)
+		{
+
+			$className = DIRECTORY_SEPARATOR . 'Plugins' . DIRECTORY_SEPARATOR . $plugin . DIRECTORY_SEPARATOR . $plugin;
+						
+			/* if plugin-class and subscribe-method exists, add classname to array */			
+			if(class_exists($className) /* && method_exists($className, 'getSubscribedEvents') */)
+			{
+				$classNames[] = $className;				
+			}
+		}
+		return $classNames;
+	}
+	
+	public function getNewRoutes($className, $routes)
+	{
+		
+		/* if route-method exists in plugin-class */
+		if(method_exists($className, 'addNewRoutes'))
+		{
+			/* add the routes */
+			$pluginRoutes = $className::addNewRoutes();
+			
+			/* multi-dimensional or simple array of routes */
+			if(isset($pluginRoutes[0]))
+			{
+				/* if they are properly formatted, add them to routes array */
+				foreach($pluginRoutes as $pluginRoute)
+				{
+					if($this->checkRouteArray($pluginRoute))
+					{
+						$routes[] = $pluginRoute;
+					}
+				}
+			}
+			elseif(is_array($routes))
+			{
+				if($this->checkRouteArray($pluginRoutes))
+				{
+					$routes[] = $pluginRoutes;
+				}
+			}
+		}
+		
+		return $routes;
+	}
+	
+	public function getNewMiddleware($className)
+	{
+		if(method_exists($className, 'addNewMiddleware'))
+		{
+			/* check array */
+			return $className::addNewMiddleware();
+		}
+	}
+	
+	private function checkRouteArray($route)
+	{
+		if( 
+			isset($route['httpMethod']) AND in_array($route['httpMethod'], array('get','post','put','delete','head','patch','options'))
+			AND isset($route['route']) AND is_string($route['route'])
+			AND isset($route['class']) AND is_string($route['class']))
+		{
+			return true;
+		}
+		return false;
+	}
+	
+	private function scanPluginFolder()
+	{
+		$pluginsDir = __DIR__ . '/../plugins';
+		
+		/* check if plugins directory exists */
+		if(!is_dir($pluginsDir)){ return array(); }
+		
+		/* get all plugins folder */
+		$plugins = array_diff(scandir($pluginsDir), array('..', '.'));
+		
+		return $plugins;
+	}
+}