Candy Cane Conundrum

<?php
/**
 * Candy Cane Conundrum - Core Backend (Required)
 * Add this to functions.php or create as a plugin.
 */

// Register REST API endpoint
add_action('rest_api_init', function() {
    register_rest_route('santasfunnight/v1', '/claim-reward', [
        'methods' => 'POST',
        'callback' => 'sfn_handle_game_reward_claim',
        'permission_callback' => '__return_true'
    ]);
});

function sfn_handle_game_reward_claim($request) {
    $email = sanitize_email($request->get_param('email'));
    $play_token = $request->get_param('playToken');
    $rounds_completed = intval($request->get_param('roundsCompleted'));

    // Validate email
    if (!is_email($email)) {
        return new WP_Error('invalid_email', 'Please enter a valid email address.', ['status' => 400]);
    }

    // Check if already claimed
    $claimed_emails = get_option('sfn_claimed_emails', []);
    if (in_array(strtolower($email), array_map('strtolower', $claimed_emails))) {
        return new WP_Error('already_claimed', 'This email has already claimed a reward.', ['status' => 400]);
    }

    // Validate play token
    $token_data = json_decode(base64_decode($play_token), true);
    if (!$token_data || $token_data['rounds'] < 10 || $rounds_completed < 10) {
        return new WP_Error('invalid_game', 'Game validation failed.', ['status' => 400]);
    }

    // Anti-cheat: minimum 15 seconds for 10 rounds
    if ($token_data['duration'] < 15000) {
        return new WP_Error('timing_invalid', 'Game completed too quickly.', ['status' => 400]);
    }

    // Generate unique code
    $coupon_code = 'SANTA-' . strtoupper(substr(md5($email . time() . wp_rand()), 0, 8));

    // Store for tracking
    $generated_codes = get_option('sfn_generated_codes', []);
    $generated_codes[] = [
        'code' => $coupon_code,
        'email' => $email,
        'rounds' => $rounds_completed,
        'created' => current_time('mysql'),
        'redeemed' => false
    ];
    update_option('sfn_generated_codes', $generated_codes);

    // Record claim
    $claimed_emails[] = strtolower($email);
    update_option('sfn_claimed_emails', $claimed_emails);

    // =============================================
    // REVIEW THIS SECTION - Update for your event
    // =============================================
    $subject = "Your Santa's Wonderland Nights Discount Code!";

    $message = "Congratulations on completing Santa Says!\n\n";
    $message .= "You reached Round {$rounds_completed} - amazing memory skills!\n\n";
    $message .= "Your \$5 discount code is:\n\n";
    $message .= "    {$coupon_code}\n\n";
    $message .= "Use this code when purchasing tickets at:\n";
    $message .= "https://santasfunnight.com/tickets/\n\n";
    $message .= "See you at the Kringleworks!\n\n";
    $message .= "---\n";
    $message .= "Santa's Wonderland Nights\n";
    $message .= "Dayton, OH | Dec 12 - Jan 4\n";
    // =============================================

    $email_sent = wp_mail($email, $subject, $message, ['Content-Type: text/plain; charset=UTF-8']);

    if (!$email_sent) {
        error_log("SFN: Failed to send email to {$email} for code {$coupon_code}");
        return new WP_REST_Response([
            'success' => true,
            'message' => "Your discount code is: {$coupon_code} (Email failed - save this!)"
        ], 200);
    }

    return new WP_REST_Response([
        'success' => true,
        'message' => 'Check your email for your $5 discount code!'
    ], 200);
}

/**
 * WooCommerce Coupon Creation (Optional)
 * Creates actual WooCommerce coupons that work at checkout.
 */
function sfn_create_woocommerce_coupon($code, $amount) {
    $coupon = new WC_Coupon();
    $coupon->set_code($code);
    $coupon->set_discount_type('fixed_cart');
    $coupon->set_amount($amount);
    $coupon->set_individual_use(true);
    $coupon->set_usage_limit(1);
    $coupon->set_usage_limit_per_user(1);
    $coupon->set_date_expires(strtotime('+30 days'));
    $coupon->save();
    return $coupon->get_id();
}

/**
 * Admin Dashboard for Game Rewards (Optional)
 * Adds a page in WP admin to view all generated codes.
 */
add_action('admin_menu', function() {
    add_menu_page(
        'Game Rewards',
        'Game Rewards',
        'manage_options',
        'sfn-game-rewards',
        'sfn_admin_rewards_page',
        'dashicons-tickets-alt',
        30
    );
});

function sfn_admin_rewards_page() {
    $codes = get_option('sfn_generated_codes', []);
    ?>
    <div class="wrap">
        <h1>Santa Says Game Rewards</h1>
        <table class="wp-list-table widefat fixed striped">
            <thead>
                <tr>
                    <th>Code</th>
                    <th>Email</th>
                    <th>Rounds</th>
                    <th>Created</th>
                    <th>Redeemed</th>
                </tr>
            </thead>
            <tbody>
                <?php foreach (array_reverse($codes) as $code): ?>
                <tr>
                    <td><code><?php echo esc_html($code['code']); ?></code></td>
                    <td><?php echo esc_html($code['email']); ?></td>
                    <td><?php echo esc_html($code['rounds']); ?></td>
                    <td><?php echo esc_html($code['created']); ?></td>
                    <td><?php echo $code['redeemed'] ? 'Yes' : 'No'; ?></td>
                </tr>
                <?php endforeach; ?>
            </tbody>
        </table>
        <p>Total codes generated: <?php echo count($codes); ?></p>
    </div>
    <?php
}