Create module loader

classes/LoadModules.php

+<?php declare(strict_types=1);
+
+namespace uib\ub\loadspeakr;
+
+use \uib\ub\loadspeakr\modules;
+use uib\ub\loadspeakr\modules\AdminModule;
+use uib\ub\loadspeakr\modules\ExportModule;
+use uib\ub\loadspeakr\modules\ModuleInterface;
+use uib\ub\loadspeakr\modules\RedirectModule;
+use uib\ub\loadspeakr\modules\ServiceModule;
+use uib\ub\loadspeakr\modules\SessionModule;
+use uib\ub\loadspeakr\modules\SparqlFilterModule;
+use uib\ub\loadspeakr\modules\StaticModule;
+use uib\ub\loadspeakr\modules\TypeModule;
+use uib\ub\loadspeakr\modules\UnknownModule;
+use uib\ub\loadspeakr\modules\UriModule;
+
+final class LoadModules
+{
+    private array $conf;
+
+    public function __construct($conf)
+    {
+        $this->conf = $conf;
+    }
+
+  public function loadModule(string $uri): ModuleInterface
+  {
+
+      $module = ucfirst($uri) . 'Module';
+      $className =  $this->loadClass($module);
+      $unknown = new UnknownModule();
+
+      switch ($className) {
+          case 'admin':
+              return new $className();
+          case 'redirect':
+              return new $className();
+          case 'service':
+              return new $className();
+          case 'session':
+              return new $className();
+          case 'sparqlfilter':
+              return new $className();
+          case 'type':
+              return new $className();
+          case 'uri':
+              return new $className();
+          case 'export':
+              return new $className();
+          case 'static':
+              return new $className();
+          case 'default':
+              break;
+      }
+
+      return $unknown;
+  }
+
+    private function loadClass($module): string
+    {
+        if (!$this->moduleAvailable($module)) {
+            return '';
+        }
+
+        $className = ucfirst($module) . 'Module';
+
+        if (class_exists($className)) {
+            return $className;
+        }
+
+        return '';
+    }
+
+    private function moduleAvailable(string $module): bool
+    {
+        if (!in_array($module, $this->conf['modules']['available'], true)) {
+            return false;
+        }
+
+        return true;
+    }
+
+}
\ No newline at end of file

classes/modules/UnknownModule.php

+<?php declare(strict_types=1);
+
+namespace uib\ub\loadspeakr\modules;
+
+use uib\ub\loadspeakr\HTTPStatus;
+
+/**
+ * Null result Loadspkr module.
+ *
+ * Used when unknown module is requested.
+ */
+final class UnknownModule implements ModuleInterface
+{
+
+    public function match($uri): void
+    {
+        HTTPStatus::send404($uri);
+    }
+
+    public function execute($params): void
+    {
+    }
+}

index.php

@@ -4,6 +4,7 @@ use uib\ub\loadspeakr\Endpoint;
 use uib\ub\loadspeakr\Exporter;
 use uib\ub\loadspeakr\HTTPStatus;
 use uib\ub\loadspeakr\Importer;
+use uib\ub\loadspeakr\LoadModules;
 use uib\ub\loadspeakr\Logging;
 use uib\ub\loadspeakr\Utils;
 
@@ -65,24 +66,22 @@ if ($uri === $conf['basedir']) {
 $localUri = $conf['basedir'] . $_GET['q'];
 $uri = Utils::getMirroredUri($localUri);
 
-// Load Loadspeakr modules.
-foreach ($conf['modules']['available'] as $i) {
-    $className = ucfirst($i) . 'Module';
-    $currentModule = $conf['modules']['directory'] . $className . '.php';
-    $namespacedClassName = 'uib\ub\loadspeakr\modules\\' . $className;
-    $module = new $namespacedClassName();
+/**
+ * Load Loadspeakr modules.
+ */
+foreach ($conf['modules']['available'] as $loadspkrModule) {
+    $loader = new LoadModules($conf);
+    $module = $loader->loadModule($uri);
     $matching = $module->match($uri);
 
-    if ($matching !== false) {
-        $module->execute($matching);
+    if (!$matching) {
+        HTTPStatus::send404($uri);
+    }
 
-        if ($conf['logfile'] !== null) {
-            fwrite($conf['logfile'], "]}");
-            fclose($conf['logfile']);
-        }
+    $module->execute($matching);
 
-        exit(0);
+    if ($conf['logfile'] !== null) {
+        fwrite($conf['logfile'], "]}");
+        fclose($conf['logfile']);
     }
 }
-
-HTTPStatus::send404($uri);