<?php
    session_start();
    require 'functions.php';

    if(isset($_POST['sign-up'])){

        // username
        if (!empty($_POST['username'])){
            $username = mysql_real_escape_string(trim($_POST['username']));
            $_SESSION['status']['register']['username'] = $username;
            if(strlen($username) > 3){
                    if(strlen($username) < 31){
                        if(user_exists($username) === true){
                            $_SESSION['status']['register']['error'][] = 'That username is already taken. Sorry, please try again with a different username.';
                        } else{
                        /*passed*/
                    }
                    } else {
                        $_SESSION['status']['register']['error'][] = 'The username is greater than 30 characters.';
                    }
                } else {
                    $_SESSION['status']['register']['error'][] = 'The username is less than 3 characters.';
                }
        } else {
            $_SESSION['status']['register']['error'][] = 'There was no username.';
        }

        if (!empty($_POST['password'])){
            $password = mysql_real_escape_string(trim($_POST['password']));

            if(strlen($password) >= 8){
                    $password = hash_function($password);
                } else {
                    $_SESSION['status']['register']['error'][] = "Your secret password is too short. You should make a password with at least 8 letters or numbers.";
                }

        } else {
            $_SESSION['status']['register']['error'][] = "You haven't put in a password.";
        }

        // Email address
        if (!empty($_POST['email_address'])){
            $email_address = mysql_real_escape_string(trim($_POST['email_address']));
            $_SESSION['status']['register']['email_address'] = $email_address;
            if(strlen($email_address) > 10){ // email address less than 10
                    if(strlen($email_address) < 161){ // if longer than 160

                        if(email_valid($email_address) == false){ // email address invalid format
                                $_SESSION['status']['register']['error'][] = "The email address has been put in wrong. Please check and try again.";
                            }
                            else{
                                // passed min length, passed max length, passed validation
                                // Continue
                            }
                    }
                    else
                    {
                        $_SESSION['status']['register']['error'][] = 'The email address is too long.';
                    }
                }
                else
                {
                    $_SESSION['status']['register']['error'][] = "The email address is too short. It can't be shorter than 10 letters or numbers.";
                }
        }
        else{
        // passed (no email input)
        }

        if (isset($_POST['tos'])){
            $_SESSION['status']['register']['tos'] = $_POST['tos'];
            if(empty($_SESSION['status']['register']['error'])){
                if(register($email_address, $username, $password) === true){

                    // Sends an email
                    send_email($email_address);
                    registerSuccessful();
                    $succeeded = true;

                    header("Location: register-success.php?username=$username");
                    exit;

                } else {
                    echo mysql_error();
                    die();
                    $_SESSION['status']['register']['error'][] = "Something went wrong. We're sorry. Please try again.";
                }
            } else {

            }
        } else {
            $_SESSION['status']['register']['error'][] = "You have to agree to the House Rules to be able to sign up.";
        }

        // If postback needed
        if($succeeded != true){
        header('Location: register-form.php');
        }else {

        }
    } else {
    }

    ?>