<?php
	namespace MBS\Web;

	class WebApplication
	{
		public $ApplicationRoot;
		public $Pages;
		public $Variables;

		public static $Current;

		public function __construct($root)
		{
			$this->ApplicationRoot = $root;
			$this->Pages = array();
			$this->Variables = array();
		}
		
		public function ExpandRelativePath($path)
		{
			if (substr($path, 0, 2) == "~/")
			{
				return $this->ApplicationRoot . "/" . substr($path, 2);
			}
			return $path;
		}

		private function _IsPostback()
		{
			// thanks https://stackoverflow.com/questions/4242035
			return strtoupper($_SERVER['REQUEST_METHOD']) === 'POST';
				//&& (basename($_SERVER['HTTP_REFERER']) == $_SERVER['SCRIPT_NAME']));
		}

		public function OnInitialize()
		{
			return true;
		}
		public function OnPostback()
		{
		}

		public function Start()
		{
			WebApplication::$Current = $this;
			if ($this->OnInitialize())
			{
				return;
			}

			if ($this->_IsPostback())
			{
				$this->OnPostback();
			}

			foreach ($this->Pages as $page)
			{
				$path = $_SERVER["REQUEST_URI"];
				$rp = substr($path, strlen($this->ApplicationRoot));

				$my_path = $page->Path;
				if (strlen($my_path) == 0)
				{
					$my_path = "/";
				}
				else if (substr($my_path, 0, 1) != "/")
				{
					$my_path = "/" . $my_path;
				}

				if ($rp == $my_path)
				{
					$page->Render();
				}
			}
		}

	}
?>