<?php

require_once 'inc/util.php';
require_once 'inc/http.php';
require_once 'resources/404.php';

class Resource
{
    protected $template = null;
    public $addSlash = false;
    
    public function title($req)
    {
        return "";
    }
    
    public function head($req)
    {
        return "";
    }
    
    public function render($req)
    {
        if($this->template == null)
        {
            $this->template = strtolower(get_class($this));
        }
        
        ob_start();
        
        include('templates/' . $this->template . '.php');
        $data = ob_get_contents();
        
        ob_end_clean();
        
        return new HTTPResponse($data);
    }
    
    public function child($name)
    {
        $method = sprintf("child_%s", $name);
        if(method_exists($this, $method))
        {
            return call_user_func(array($this, $method));
        }
        else
        {
            return new FileNotFound();
        }
    }
    
    // trailing slash
    public function child_()
    {
        if($this->addSlash)
        {
            return $this;
        }
        else
        {
            return new FileNotFound();
        }
    }
}

class Redirector extends Resource
{
    private $url;
    private $status;
    
    public function __construct($url, $status=302)
    {
        $this->url = $url;
        $this->status = $status;
    }
    
    public function render($req)
    {
        $response = new HTTPResponse('', $this->status);
        $response->addHeader('Location', $this->url);
        return $response;
    }
}

?>