Rosary/register.php

<?php
require_once __DIR__ . '/config/db.php';
require_once __DIR__ . '/includes/auth.php';
require_once __DIR__ . '/includes/mailer.php';

_auth_start();

// Already logged in
if (!empty($_SESSION['user_id'])) {
    header('Location: ' . BASE_URL . '/admin/');
    exit;
}

$errors   = [];
$success  = false;
$fields   = ['username' => '', 'display_name' => '', 'email' => ''];

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $username        = trim($_POST['username']        ?? '');
    $display_name    = trim($_POST['display_name']    ?? '');
    $email           = trim($_POST['email']           ?? '');
    $password        = $_POST['password']             ?? '';
    $password_confirm = $_POST['password_confirm']    ?? '';

    $fields = compact('username', 'display_name', 'email');

    // Validate username
    if (!preg_match('/^[a-zA-Z0-9_]{3,30}$/', $username)) {
        $errors[] = 'Username must be 3-30 characters and contain only letters, numbers, and underscores.';
    }
    // Validate email
    if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
        $errors[] = 'Please enter a valid email address.';
    }
    // Validate password
    if (strlen($password) < 8) {
        $errors[] = 'Password must be at least 8 characters.';
    }
    if ($password !== $password_confirm) {
        $errors[] = 'Passwords do not match.';
    }

    if (empty($errors)) {
        $pdo = get_pdo();

        // Check uniqueness
        $chk = $pdo->prepare('SELECT id FROM users WHERE username = ? OR email = ?');
        $chk->execute([$username, $email]);
        $existing = $chk->fetchAll();
        foreach ($existing as $row) {
            // Re-check which field conflicts
        }
        if (!empty($existing)) {
            $chk_u = $pdo->prepare('SELECT id FROM users WHERE username = ?');
            $chk_u->execute([$username]);
            if ($chk_u->fetch()) $errors[] = 'That username is already taken.';

            $chk_e = $pdo->prepare('SELECT id FROM users WHERE email = ?');
            $chk_e->execute([$email]);
            if ($chk_e->fetch()) $errors[] = 'That email address is already registered.';
        }
    }

    if (empty($errors)) {
        $pdo          = get_pdo();
        $smtp_host    = get_setting('smtp_host');
        $auto_confirm = ($smtp_host === '');  // No SMTP = skip email confirmation

        $hash  = password_hash($password, PASSWORD_BCRYPT);
        $token = $auto_confirm ? null : bin2hex(random_bytes(32));

        $pdo->prepare("
            INSERT INTO users (username, email, password_hash, display_name, role, rosary_limit, email_confirmed, confirm_token)
            VALUES (?, ?, ?, ?, 'user', 1, ?, ?)
        ")->execute([$username, $email, $hash, $display_name ?: $username, $auto_confirm ? 1 : 0, $token]);

        if (!$auto_confirm && $token) {
            $site_url  = rtrim(get_setting('site_url'), '/');
            $link      = $site_url . '/confirm?token=' . urlencode($token);
            $site_name = get_setting('site_name', APP_NAME);
            $body_html = "
                <h2 style='margin-top:0;color:#1e3a5f'>Confirm your email</h2>
                <p>Hello, <strong>" . htmlspecialchars($display_name ?: $username) . "</strong>!</p>
                <p>Thank you for registering with {$site_name}. Click the button below to confirm your email address:</p>
                <p style='text-align:center;margin:28px 0'>
                    <a href='" . htmlspecialchars($link) . "' style='display:inline-block;background:#1e3a5f;color:#fff;padding:12px 28px;border-radius:6px;text-decoration:none;font-weight:600'>Confirm Email</a>
                </p>
                <p style='color:#6b7280;font-size:13px'>Or copy this link: " . htmlspecialchars($link) . "</p>
                <p style='color:#6b7280;font-size:13px'>If you did not register, ignore this email.</p>
            ";
            $html = email_template('Confirm your email — ' . $site_name, $body_html);
            send_email($email, $display_name ?: $username, 'Confirm your email — ' . $site_name, $html);
        }

        $success = true;
        $auto_confirmed = $auto_confirm;
    }
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="icon" type="image/svg+xml" href="<?= BASE_URL ?>/favicon.svg">
    <title>Register — <?= htmlspecialchars(get_setting('site_name', APP_NAME)) ?></title>
    <link rel="stylesheet" href="<?= BASE_URL ?>/assets/css/setup.css">
</head>
<body class="login-page">
    <div class="login-box" style="max-width:460px">
        <h1>&#x271D; <?= htmlspecialchars(get_setting('site_name', APP_NAME)) ?></h1>
        <h2>Create Account</h2>

        <?php if ($success): ?>
            <?php if ($auto_confirmed ?? false): ?>
                <div class="alert alert-success">
                    Account created! <a href="<?= BASE_URL ?>/login">Sign in now</a>.
                </div>
            <?php else: ?>
                <div class="alert alert-success">
                    Account created! Please check your email to confirm your address before logging in.
                </div>
            <?php endif; ?>
        <?php else: ?>

        <?php if (!empty($errors)): ?>
            <div class="alert alert-error">
                <?php foreach ($errors as $err): ?>
                    <div><?= htmlspecialchars($err) ?></div>
                <?php endforeach; ?>
            </div>
        <?php endif; ?>

        <form method="post" action="<?= BASE_URL ?>/register">
            <div class="form-group">
                <label for="username">Username <span class="required">*</span></label>
                <input type="text" id="username" name="username"
                       value="<?= htmlspecialchars($fields['username']) ?>"
                       pattern="[a-zA-Z0-9_]{3,30}" title="3-30 letters, numbers, or underscores"
                       autocomplete="username" autofocus required>
                <p class="help-text">3-30 characters. Letters, numbers, underscores only.</p>
            </div>
            <div class="form-group">
                <label for="display_name">Display Name</label>
                <input type="text" id="display_name" name="display_name"
                       value="<?= htmlspecialchars($fields['display_name']) ?>"
                       maxlength="100" autocomplete="name">
                <p class="help-text">Optional. Shown publicly.</p>
            </div>
            <div class="form-group">
                <label for="email">Email <span class="required">*</span></label>
                <input type="email" id="email" name="email"
                       value="<?= htmlspecialchars($fields['email']) ?>"
                       autocomplete="email" required>
            </div>
            <div class="form-group">
                <label for="password">Password <span class="required">*</span></label>
                <input type="password" id="password" name="password"
                       minlength="8" autocomplete="new-password" required>
                <p class="help-text">At least 8 characters.</p>
            </div>
            <div class="form-group">
                <label for="password_confirm">Confirm Password <span class="required">*</span></label>
                <input type="password" id="password_confirm" name="password_confirm"
                       minlength="8" autocomplete="new-password" required>
            </div>
            <button type="submit" class="btn btn-primary btn-full">Create Account</button>
        </form>

        <div style="margin-top:20px;text-align:center;font-size:14px;color:#6b7280">
            Already have an account? <a href="<?= BASE_URL ?>/login" style="color:#1e3a5f">Sign in</a>
        </div>

        <?php endif; ?>
    </div>
</body>
</html>