Firts up

core/classes/Engine.php

@@ -0,0 +1,44 @@
+<?php
+
+class Engine
+{
+    protected $appPath;
+    protected $templatesPath;
+    public $viewPath;
+
+    public function __construct($appPath = APP, $templatesPath = TEMPLATES)
+    {
+        $this->appPath = rtrim($appPath, '/') . '/';
+        $this->templatesPath = rtrim($templatesPath, '/') . '/';
+
+        $this->viewPath = $this->determineViewPath($this->_urlParams());
+    }
+
+    protected function determineViewPath($urlParams): string
+    {
+        $path1 = $this->appPath . "app/views" . $urlParams . '.php';
+        $path2 = $this->appPath . "app/views" . $urlParams . '/index.php';
+        $path3 = $this->appPath . "app/views" . $urlParams . '.md';
+        $path4 = $this->appPath . "app/views" . $urlParams . '/index.md';
+        $path404 = $this->templatesPath . 'error404.php';
+
+        if (file_exists($path1)) {
+            return $path1;
+        } elseif (file_exists($path2)) {
+            return $path2;
+        } elseif (file_exists($path3)) {
+            return $path3;
+        } elseif (file_exists($path4)) {
+            return $path4;
+        } else {
+            return $path404;
+        }
+    }
+
+    private function _urlParams(): string
+    {
+        $serverURL = parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH);
+        // Normalize URL by removing trailing slashes
+        return rtrim($serverURL, "/");
+    }
+}