<?php
/**
 * Frontend handler
 */
class ZAPController {
	/**
	 * String mode
	 */
	private $mode;

	/**
	 * Parsable content object
	 */
	private $action;

	/**
	 * Class prefix
	 */
	private $prefix = 'ZAP';

	/**
	 * Constructor
	 */
	public function __construct($mode = 'home') {
		$mode = trim(strip_tags($mode));
		$this->mode = ucfirst($mode);
		$clazz = $this->prefix . $this->mode;
		if (!class_exists($clazz)) {
			die('Wrong parameter');
		}
		$this->action = new $clazz();
	}

	/**
	 * @return string content
	 */
	public function fetch() {
		if (!($this->action instanceof ZAPHandler)) {
			die('Handler does not implement ZAPHandler interface');
		}
		return $this->action->getContent();
	}
}
?>