Resolve "Introduce PSR-4 autoloading"

Closes #12

index.php

-<?php
+<?php declare(strict_types=1);
 
 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;
 
+const LOADSPEAKR_ROOT = __DIR__;
+
 require_once __DIR__ . '/vendor/autoload.php';
+require_once __DIR__ . '/common.inc.php';
 
-//Import
-if (isset($_GET['q']) && $_GET['q'] == 'import') {
-    include_once('classes/Importer.php');
+if (isset($_GET['q']) && $_GET['q'] === 'import') {
     $imp = new Importer();
     $imp->run();
     exit(0);
 }
 
-//Test if LODSPeaKr is configured
+// Check that application is installed.
 if (!file_exists('settings.inc.php')) {
-    echo 'Need to configure lodspeakr first. Please run "install.sh". Alternatively, you can <a href="import">import an existing application</a>';
+    echo 'Need to configure lodspeakr first. Please run "install.sh". Alternatively, you can <a href="' . $_SERVER['HTTP_HOST'] . '/import">import an existing application</a>';
     exit(0);
 }
 
-include_once('common.inc.php');
-//Debug output
-
 $conf['logfile'] = null;
 if ($conf['debug']) {
-    include_once('classes/Logging.php');
-    if (isset($_GET['q']) && $_GET['q'] == 'logs') {
+    if (isset($_GET['q']) && $_GET['q'] === 'logs') {
         Logging::init();
         exit(0);
-    } else {
-        $conf['logfile'] = Logging::createLogFile($_GET['q']);
-        //error_reporting(E_ALL);
     }
-} else {
-    error_reporting(E_ERROR);
+
+    $conf['logfile'] = Logging::createLogFile($_GET['q']);
 }
 
-include_once('classes/HTTPStatus.php');
-include_once('classes/Utils.php');
-include_once('classes/Queries.php');
-include_once('classes/Endpoint.php');
-include_once('classes/Convert.php');
 $results = array();
 $firstResults = array();
-$endpoints = array();
 $endpoints['local'] = new Endpoint($conf['endpoint']['local'], $conf['endpointParams']['config']);
-
 $acceptContentType = Utils::getBestContentType($_SERVER['HTTP_ACCEPT'], $conf['http_accept']);
 $extension = Utils::getExtension($acceptContentType, $conf['http_accept']);
+$uri = $conf['basedir'] . $_GET['q'];
 
-
-//Check content type is supported by LODSPeaKr
-if ($acceptContentType == null) {
+// Check that content type is supported by LODSPeaKr.
+if ($acceptContentType === null) {
     HTTPStatus::send406($uri);
 }
 
-//Export
-if ($conf['export'] && $_GET['q'] == 'export') {
-    include_once('settings.inc.php');
-    include_once('classes/Exporter.php');
+if ($conf['export'] && $_GET['q'] === 'export') {
     $exp = new Exporter();
     header('Content-Type: text/plain');
     $exp->run();
     exit(0);
 }
 
-//Redirect to root URL if necessary
-$uri = $conf['basedir'] . $_GET['q'];
+// Redirect to root URL if necessary.
 $localUri = $uri;
-if ($uri == $conf['basedir']) {
+if ($uri === $conf['basedir']) {
     header('Location: ' . $conf['root']);
     exit(0);
 }
 
 
-//Configure external URIs if necessary
+// Configure external URIs if necessary.
 $localUri = $conf['basedir'] . $_GET['q'];
-
 $uri = Utils::getMirroredUri($localUri);
 
-
-//Load Loadspeakr modules.
-foreach ($conf['modules']['available'] as $i) {
-    $className = $i . 'Module';
-    $currentModule = $conf['modules']['directory'] . $className . '.php';
-
-    if (!is_file($currentModule)) {
-        HTTPStatus::send500('<br/>Can\'t load or error in module <pre>' . $currentModule . '</pre>');
-        exit(1);
-    }
-
-    require_once($currentModule);
-    $namespacedClassName = 'uib\ub\loadspeakr\modules\\' . ucfirst($className);
-    $module = new $namespacedClassName();
+/**
+ * Load Loadspeakr modules.
+ */
+foreach ($conf['modules']['available'] as $loadspkrModule) {
+    $loader = new LoadModules($conf);
+    $module = $loader->loadModule($loadspkrModule);
     $matching = $module->match($uri);
 
-    if ($matching != false) {
+    if ($matching) {
         $module->execute($matching);
-
-        if ($conf['logfile'] != null) {
+        if ($conf['logfile'] !== null) {
             fwrite($conf['logfile'], "]}");
             fclose($conf['logfile']);
         }
 
+        /**
+         * Only run first Loadspeakr modules that matches.
+         */
         exit(0);
     }
 }