1 files changed, 111 insertions, 0 deletions
diff --git a/src/web/core/loader.php b/src/web/core/loader.php
new file mode 100644
index 0000000..b0a1cbd
--- /dev/null
+++ b/src/web/core/loader.php
@@ -0,0 +1,111 @@
+<?php /* Copyright (c) 2024 Freya Murphy */
+class Loader {
+
+	// keep track of what has been loaded
+	private $loaded;
+
+	// the database
+	private $db;
+
+	function __construct() {
+		$this->loaded = array();
+	}
+
+	/**
+     * Loads a $type of object from a $dir with a given $name
+	 * @param string $name - the name of the object to load
+	 * @param string $dir - the directory theese objects are stored in
+	 * @param string $type - the type of the object
+	 */
+	private function load_type($name, $dir, $type): object|NULL {
+		$path = $dir . '/' . $name . '.php';
+		if (array_key_exists($path, $this->loaded)) {
+			return $this->loaded[$path];
+		}
+
+		if (!file_exists($path)) {
+			return NULL;
+		}
+
+		$parts = explode('/', $name);
+		$part = end($parts);
+		$class = ucfirst($part) . '_' . $type;
+		require($path);
+
+		$ref = NULL;
+		try {
+			$ref = new ReflectionClass($class);
+		} catch (Exception $_e) {}
+
+		if ($ref === NULL) {
+			return NULL;
+		}
+
+		$obj = $ref->newInstance($this);
+		$this->loaded[$path] = $obj;
+
+		return $obj;
+	}
+
+	/**
+	 * Loads a model
+	 * @param string $name - the name of the model to load
+	 */
+	public function model($name): object|NULL {
+		$root = $GLOBALS['webroot'];
+		$dir = $root . '/_model';
+		return $this->load_type($name, $dir, 'model');
+	}
+
+	/**
+	 * Loads a controller
+	 * @param string $name - the name of the controller to load
+	 */
+	public function controller($name): Controller|NULL {
+		$root = $GLOBALS['webroot'];
+		$dir = $root . '/_controller';
+		return $this->load_type($name, $dir, 'controller');
+	}
+
+	/**
+	 * Loads the given common lang
+	 */
+	public function lang(): void {
+		$dir = $GLOBALS['webroot'] . '/lang/';
+		$lang = $GLOBALS['lang'];
+		if ($handle = opendir($dir)) {
+			while (false !== ($entry = readdir($handle))) {
+				if ($entry === '.' || $entry === '..' || $entry === 'apps') {
+					continue;
+				}
+				$path = $dir . $entry;
+				require($path);
+			}
+		}
+		$GLOBALS['lang'] = $lang;
+	}
+
+	/**
+	 * Loads a given app specific lang
+	 * @param string $name - the name of the app
+	 */
+	public function app_lang($name): void {
+		$dir = $GLOBALS['webroot'] . '/lang/apps/';
+		$file = $dir . $name . '.php';
+		if (file_exists($file)) {
+			$lang = $GLOBALS['lang'];
+			require($dir . $name . '.php');
+			$GLOBALS['lang'] = $lang;
+		}
+	}
+
+	public function db() {
+		if ($this->db) {
+			return $this->db;
+		} else {
+			$this->db = new DatabaseHelper();
+			return $this->db;
+		}
+	}
+
+}