<?php
/**
 * Class/File Autoloader
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

class MyArcade_Autoloader {

	/**
	 * Project prefix.
	 *
	 * @var string
	 */
	private $slug = 'myarcade_';

	/**
	 * Path to the includes directory.
	 *
	 * @var string
	 */
	private $include_path = '';

	/**
	 * The Constructor
	 */
	public function __construct() {

		if ( function_exists( "__autoload" ) ) {
			spl_autoload_register( "__autoload" );
		}

		spl_autoload_register( array( $this, 'autoload' ) );

		$this->include_path = untrailingslashit( MYARCADE_DIR ) . '/includes/';
	}

	/**
	 * Take a class name and turn it into a file name.
	 *
	 * @access private
	 * @param  string $class
	 * @return string
	 */
	private function get_file_name_from_class( $class ) {
		return 'class-' . str_replace( '_', '-', $class ) . '.php';
	}

	/**
	 * Include a class file.
	 *
	 * @access private
	 * @param  string $path
	 * @return bool successful or not
	 */
	private function load_file( $path ) {

		if ( $path && is_readable( $path ) ) {
			include_once $path;
			return true;
		} else {
			return false;
		}
	}

	/**
	 * Auto-load classes on demand to reduce memory consumption.
	 *
	 * @param   string $class Class name.
	 */
	public function autoload( $class ) {

		$class = strtolower( $class );

		if ( strpos( $class, $this->slug ) === false ) {
			return;
		}

		$file  = $this->get_file_name_from_class( $class );
		$path = '';

		if ( strpos( $class, $this->slug . 'admin' ) === 0 ) {
			$path = $this->include_path . 'admin/';
		}

		if ( empty( $path ) || ( ! $this->load_file( $path . $file ) && strpos( $class, $this->slug ) === 0 ) ) {
			$this->load_file( $this->include_path . $file );
		}
	}
}

new MyArcade_Autoloader();
