<?php

require_once __DIR__ . '/functions.php';

$pdo = app_db_pdo();
$errors = [];
$email = trim((string)($_POST['email'] ?? ''));
$tenantSlug = trim((string)($_POST['tenant_slug'] ?? ''));

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    app_require_csrf();

    $result = saas_authenticate(
        $pdo,
        $email,
        (string)($_POST['password'] ?? ''),
        $tenantSlug
    );

    if ($result['ok']) {
        saas_session_login($result['identity']);
        header('Location: konto.php');
        exit;
    }

    $errors = $result['errors'];
}

include 'header.php';
include 'headerline.php';
include 'nav.php';
?>

<section id="banner">
    <div class="content">
        <h2>Login</h2>

        <?php if (isset($_GET['logged_out'])): ?>
            <div class="hint-box success"><p>Du wurdest abgemeldet.</p></div>
        <?php endif; ?>

        <?php if ($errors !== []): ?>
            <div class="hint-box error">
                <?php foreach ($errors as $error): ?>
                    <p><?php echo saas_html($error); ?></p>
                <?php endforeach; ?>
            </div>
        <?php endif; ?>

        <form method="post" action="login.php">
            <?php echo app_csrf_field(); ?>
            <div class="row">
                <div class="col-6 col-12-small">
                    <label for="email">E-Mail</label>
                    <input type="email" name="email" id="email" value="<?php echo saas_html($email); ?>" required>
                </div>
                <div class="col-6 col-12-small">
                    <label for="password">Passwort</label>
                    <input type="password" name="password" id="password" required>
                </div>
                <div class="col-6 col-12-small">
                    <label for="tenant_slug">Kundenkuerzel</label>
                    <input type="text" name="tenant_slug" id="tenant_slug" value="<?php echo saas_html($tenantSlug); ?>" placeholder="optional">
                </div>
            </div>
            <ul class="actions">
                <li><button type="submit">Einloggen</button></li>
                <li><a href="register.php" class="button alt">Registrieren</a></li>
            </ul>
        </form>
    </div>
</section>

<?php include 'footer.php'; ?>
