<?php
//signup.php
include 'connect.php';
include 'header.php';

echo '<h3>Sign up</h3><br />';

if($_SERVER['REQUEST_METHOD'] != 'POST')
{
    /*the form hasn't been posted yet, display it
      note that the action="" will cause the form to post to the same page it is on */
    echo '<form method="post" action="">
        Username: <input type="text" name="username" /><br />
        Password: <input type="password" name="password"><br />
        Password again: <input type="password" name="user_pass_check"><br />
        E-mail: <input type="email" name="email"><br />
        <input type="submit" value="Add category" />
     </form>';
}
else
{
    /* so, the form has been posted, we'll process the data in three steps:
        1.  Check the data
        2.  Let the user refill the wrong fields (if necessary)
        3.  Save the data
    */
    $errors = array(); /* declare the array for later use */

    if(isset($_POST['username']))
    {
        //the user name exists
        if(!ctype_alnum($_POST['username']))
        {
            $errors[] = 'The username can only contain letters and digits.';
        }
        if(strlen($_POST['username']) > 30)
        {
            $errors[] = 'The username cannot be longer than 30 characters.';
        }
    }
    else
    {
        $errors[] = 'The username field must not be empty.';
    }


    if(isset($_POST['password']))
    {
        if($_POST['password'] != $_POST['user_pass_check'])
        {
            $errors[] = 'The two passwords did not match.';
        }
    }
    else
    {
        $errors[] = 'The password field cannot be empty.';
    }

    if(!empty($errors)) /*check for an empty array, if there are errors, they're in this array (note the ! operator)*/
    {
        echo 'Uh-oh.. a couple of fields are not filled in correctly..<br /><br />';
        echo '<ul>';
        foreach($errors as $key => $value) /* walk through the array so all the errors get displayed */
        {
            echo '<li>' . $value . '</li>'; /* this generates a nice error list */
        }
        echo '</ul>';
    }
    else
    {
        //the form has been posted without, so save it
        //notice the use of mysql_real_escape_string, keep everything safe!
        //also notice the sha1 function which hashes the password
        $sql = "INSERT INTO
                    users(fullname, xfire, steam, username, password, email, date, user_level)
                VALUES('asdf', 'asdf', 'asdf', '" . mysqli_real_escape_string($link, $_POST['username']) . "',
                       '" . sha1($_POST['password']) . "',
                       '" . mysqli_real_escape_string($link, $_POST['email']) . "',
                        NOW(),
                        0)";

        $result = mysqli_query($link, $sql);
        if(!$result)
        {
            //something went wrong, display the error
            echo 'Something went wrong while registering. Please try again later.';
            echo mysqli_error($link); //debugging purposes, uncomment when needed
        }
        else
        {
            echo 'Succesfully registered. You can now <a href="signin.php">sign in</a> and start posting! :-)';
        }
    }
}

include 'footer.php';
?>