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<?php
session_start();

require_once("include.php");		// handles all the stuff that needs to be included

$db = new SQLite3("../database/sqlite.db");

if(!isset($_SESSION["login"])){
	$_SESSION["login"] = false;
}

if(empty($_GET)){
	if(!$_SESSION["login"]){
		print_login(constant("EMPTY"));
	} else {
		header("Refresh: 0; ".$scheme.$_SERVER["HTTP_HOST"]."/" . $_SESSION["username"]);
		exit;
	}
} else {

	/* checks for specific site url's */

	if(empty($_GET["name"])){
		switch($_GET["task"]){
			case("login"):
				if($_SERVER['REQUEST_METHOD'] == 'POST'){
					$var = login($db);
					if($var == LOGIN_SUCCESSFULL){
						header("Refresh: 0; ".$scheme.$_SERVER["HTTP_HOST"]."/".$_SESSION["username"]);
						//account($db);
					} else {
						print_login($var);
					}
				} else {
					if(!$_SESSION["login"]){
						print_login(constant("EMPTY"));
					} else {
						header("Refresh: 0; ".$scheme.$_SERVER["HTTP_HOST"]."/" . $_SESSION["username"]);
						exit;
					}
				}
				break;

			case("logout"):
				$var = logout();
				if($var == LOGOUT_SUCCESSFULL){
					print_login($var);
				} else {
					header("Refresh: 0; ".$scheme.$_SERVER["HTTP_HOST"]."/httperror.php?e=500");
				}
				break;

			case("invite"):
				if(!$_SESSION["login"]){
					print_login(constant("EMPTY"));
				}

				if($_SERVER['REQUEST_METHOD'] == 'POST'){
					$var = invite($db);
					if($var == INVITE_SUCCESSFULL){
						header("Refresh: 0; ".$scheme.$_SERVER["HTTP_HOST"]."/"); //TODO Direct link to the file browser.
					} else {
						print_invite($var);
					}
				} else {
					print_invite(constant("EMPTY"));
				}
				break;

			case("register"):
				if($_SESSION["login"]){
					header("Refresh: 0; ".$scheme.$_SERVER["HTTP_HOST"]."/" . $_SESSION["username"]);
					exit;
				}

				if($_SERVER['REQUEST_METHOD'] == 'POST'){
					$var = register($db);
					if($var == REGISTER_SUCCESSFULL){
						account($db);
					} else {
						print_register($var);
					}
				} else {
					print_register(constant("EMPTY"));
				}
				break;

			case("download"):	//not implemented yet
				if(!isset($_GET["hash"])){
					$download_hash = "";
				} else {
					$download_hash = $_GET["hash"];
				}
				$var = check_file_hash($db, $_GET["id"], $download_hash);
				if($var == DOWNLOAD_NOT_FILE){
					get_404("/", "File id: ".$_GET['id']);
				} elseif ($var == DOWNLOAD_PRIVATE_FILE){
					$_GET["e"]="401";
					include("httperror.php");
				} elseif($var == DOWNLOAD_FALSE_ID){
					$_GET["e"]="403";
					include("httperror.php");
				}
				break;

			case("user"):
				account($db);
				break;

			default:
				get_404($_GET["task"], $_GET["task"]); 	//TODO: Commit EMPTY constant
				break;
		}
	} else {

	/* shows the user content, downloads files, main function */

		if(rewrite($db)){
			if(!check_if_file($db, $_GET["name"], $_GET["folder"])){
				$content = collect_content($db, $_GET["name"], $_GET["folder"]);
				if($content == FILE_NOT_FOUND){
					$content = get_path_to_wrong_folder($db, $_GET["name"], $_GET["folder"]);
					print_wrong_folder($content);
				} elseif ($content == EMPTY_FOLDER){
					print_browser($content);
					//TODO: echo "print: folder_is_empty"; exit;
				} else {
					print_browser($content);
				}
			} else {
				start_file_download($_GET["name"], $_GET["folder"]);
			}
		} else {
			get_404($_GET["name"], $_GET["name"]);
		}
	}
}