<?

/*
 *  Account Login / Logout Handler for AppDB
 *
 */

include("path.php");
include(BASE."include/"."incl.php");

//set http header to not cache
header("Pragma: no-cache");
header("Cache-control: no-cache");

//check command and process
do_account($cmd);

//process according to $cmd from URL
function do_account($cmd = null)
{
    global $ext_username, $ext_password, $ext_password2, $ext_realname, $ext_email;

	if (! $cmd) return 0;
	switch($cmd)
	{

		case "new":
			apidb_header("New Account");
			include(BASE."include/"."form_new.php");
			apidb_footer();
			exit;

		case "do_new":
			cmd_do_new();
			exit;

		case "login":
			apidb_header("Login");
			include(BASE."include/"."form_login.php");
			apidb_footer();
			exit;

		case "do_login":
			cmd_do_login();
			exit;

		case "send_passwd":
			cmd_send_passwd();
			exit;

		case "logout":
			apidb_session_destroy();
			addmsg("You are successfully logged out.", "green");
			redirect(apidb_fullurl("index.php"));
			exit;
	}
	//not valid command, display error page
	errorpage("Internal Error","This module was called with incorrect parameters");
	exit;
}

//retry
function retry($cmd, $msg)
{
    addmsg($msg, "red");
    do_account($cmd);
}

//create new account
function cmd_do_new()
{
    global $ext_username, $ext_password, $ext_password2, $ext_realname, $ext_email;
    global $current;

    if(ereg("^.+@.+\\..+$", $ext_username))
	{
	    $ext_username = "";
	    retry("new", "Invalid Username, must not contain special characters");
	    return;
	}
    if(strlen($ext_username) < 3)
	{
	    $ext_username = "";
	    retry("new", "Username must be at least 3 characters");
	    return;
	}
    if(strlen($ext_password) < 5)
	{
	    retry("new", "Password must be at least 5 characters");
	    return;
	}
    if($ext_password != $ext_password2)
	{
	    retry("new", "Passwords don't match");
	    return;
	}
    if(strlen($ext_realname) == 0)
	{
	    retry("new", "You don't have a Real name?");
	    return;
	}
    if(!ereg("^.+@.+\\..+$", $ext_email))
	{
	    $ext_email = "";
	    retry("new", "Invalid email address");
	    return;
	}

    $user = new User();

    if($user->exists($ext_username))
	{
	    $ext_username = "";
	    retry("new", "That username is already in use");
	    return;
	}

    $result = $user->create($ext_username, $ext_password, $ext_realname, $ext_email);

    if($result == null)
	{
	    $user->login($ext_username, $ext_password);
	    addmsg("Account created! ($ext_username)", "green");
	    redirect(apidb_fullurl());
	}
    else
	retry("new", "Failed to create account: $result");
}

//email lost password
function cmd_send_passwd()
{
    global $ext_username;

    $user = new User();
    
    $userid = $user->lookup_userid($ext_username);
    $passwd = generate_passwd();
    
    if ($userid)
    {	
	if ($user->update($userid, $passwd))
	{
	
            $msg =  "Application DB Lost Password\n";
            $msg .= "----------------------------\n";
            $msg .= "We have received a request that you lost your password.\n";
            $msg .= "We will create a new password for you. You can then change\n";
            $msg .= "your password at the Preferences screen.\n\n";
            $msg .= "Your new password is: ".$passwd."\n\n";
    	
	    if (mail($user->lookup_email($userid), '[AppDB] Lost Password', $msg))
	    {
	        addmsg("Your new password has been emailed to you.", "green");
	    }
	    else
	    {
	        addmsg("Your password has changed, but we could not email it to you. Contact Support!", "red");
	    }
	}
	else
	{
	    addmsg("Internal Error, we could not update your password.", "red");
	}
    }
    else
    {
        addmsg("Sorry, that username [$ext_username] does not exist.", "red");
    }
    
    redirect(apidb_fullurl("account.php?cmd=login"));
}

//on login handler
function cmd_do_login()
{
    global $ext_username, $ext_password;
    global $ext_referer;
    global $current;

    $user = new User();
    $result = $user->login($ext_username, $ext_password);

    if($result == null)
	{
	    $current = $user;
	    addmsg("You are successfully logged in.", "green");
	    redirect(apidb_fullurl("index.php"));    	    
	}
    else
	{
	    retry("login","Login failed ($result)");
	    $current = 0;
	}
}

?>