<?php require("inc/header.php"); ?>
<?php
require_once("inc/functions.php");
$errors = array();
require_once("inc/db.php");

if (empty($_POST['username']) || !preg_match('/^[a-zA-Z0-9_]+$/', $_POST['username'])) {
    $errors['username'] = "Vous n'avez pas rentrer de pseudo valide (alphanumérique).";
} else {
    $req = $db->prepare("SELECT id FROM users WHERE username = ?");
    $req->execute([$_POST['username']]);
    $user = $req->fetch();
    if ($user) {
        $error['username'] = "Ce pseudo est déjà utilisé.";
    }
}

if (empty($_POST['email']) || !filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)) {
    $errors['email'] = "Votre email n'est pas valide.";
} else {
    $req = $db->prepare("SELECT id FROM users WHERE email = ?");
    $req->execute([$_POST['email']]);
    $user = $req->fetch();
    if ($user) {
        $error['email'] = "Cette email est déjà utilisé.";
    }
}

if (empty($_POST['password']) || $_POST['password'] != $_POST['password_confirm']) {
    $errors['password'] = "Vous devez rentrer un mot de passe valide.";
}

if (empty($error)) {
    $password = password_hash($_POST['password'], PASSWORD_BCRYPT);
    $req = $db->prepare("INSERT INTO users VALUE (NULL, ?, ?, ?, NULL)");
    $token = str_random(60);
    $req->execute($_POST['username'], $_POST['email'], $password, $token);
    $user_id = $db->lastInsertId();
    mail($_POST['email'], 'Confirmation de votre compte', "Afin de valider votre compte, merci de cliquer sur le lien suivant : \n\nhttp://LydanstaCorp/45/confirm.php?id=$user_id&token=$token");
    header('location: login.php');
    exit();
}

?>
    <!-- Main -->
    <section id="main">
    <header>
        <span class="avatar"><img src="images/avatar.jpg" alt=""/></span>
        <h1>S'enregistrer</h1>
    </header>
    <?php if(!empty($errors)): ?>
    <p>Vous n'avez pas rempli le formulaire correctement</p>
    <ul>
        <?php foreach ($errors as $error): ?>
            <li><?= $error; ?></li>
        <?php endforeach; ?>
    </ul>
    <?php endif; ?>
    <form method="post" action="">
        <div class="field">
            <input type="text" name="username" id="username" placeholder="Identifiant"/>
        </div>
        <div class="field">
            <input type="text" name="email" id="email" placeholder="Email"/>
        </div>
        <div class="field">
            <input type="password" name="password" id="password" placeholder="Mot de passe"/>
        </div>
        <div class="field">
            <input type="password" name="password_confirm" id="password_confirm"
                   placeholder="Confirmer le mot de passe"/>
        </div>
        <ul class="actions">
            <input type="submit" name="nom" value="M'enregistrer">
        </ul>

    </form>
    </section>
    <?php require("inc/footer.php"); ?>