/**
 * This code snippet modifies the "Review Reminder" WooCommerce Email.
 *
 * This adds the following validation checks to the Review Reminder email which
 * is sent to a customer after they have made a purchase to remind them to write
 * a review of their purchased products.
 * - 1. Does the customer have the correct user role?
 * - 2. Is this the customer's first order?
 *
 * @param bool $skip  Whether the Review Reminder email should be skipped for the provided order
 * @param \WC_Order $order  The WooCommerce Order object
 *
 * @return bool - true if the Review Reminder email should be skipped, false otherwise.
 */
add_filter('site-reviews-notifications/product/reminder/skip', function ($skip, $order) {
    // -------------------------------------
    $role = 'customer'; // change as needed!
    // -------------------------------------
    $user = $order->get_user();
    if (!$user || !in_array($role, $user->roles)) {
        return true; // Skip if user does not have the role
    }
    if (!function_exists('wc_get_customer_order_count') || wc_get_customer_order_count($user->ID) > 1) {
        return true; // Skip if not the first order
    }
    return false; // Proceed with notification
}, 10, 2);

/**
 * This code snippet modifies the "Review Notification" emails.
 *
 * This adds the following validation checks to the Review Notification email:
 * - 1. Does the notification have a {wc_coupon} template tag in the message?
 * - 2. Does the logged-in user have the correct user role?
 * - 3. Does the user have only one existing order?
 *
 * @param bool $result  Whether the notification conditions have passed
 * @param \GeminiLabs\SiteReviews\Addon\Notifications\Notification $notification  The Notification object
 *
 * @return bool - true if the notification should be sent, false otherwise.
 */
add_filter('site-reviews-notifications/notification/is-valid', function ($result, $notification) {
    // -------------------------------------
    $role = 'customer'; // change as needed!
    // -------------------------------------
    $message = $notification->get('message');
    if (!$result || !str_contains($message, '{wc_coupon}')) {
        // Either the notification conditions have failed
        // Or, the notification does not contain a coupon code template tag
        return $result;
    }
    $user = $notification->review->user();
    if (!$user || !in_array($role, $user->roles)) {
        return false; // Skip if user does not have the role
    }
    if (!function_exists('wc_get_customer_order_count') || wc_get_customer_order_count($user->ID) > 1) {
        return false; // Skip if not the first order
    }
    if (!empty(get_user_meta($user->ID, '_coupon_email_sent', true))) {
        return false; // Skip if user has already been sent a coupon
    }
    update_user_meta($user->ID, '_coupon_email_sent', 1);
    return true; // Proceed with notification
}, 10, 2);

/**
 * This code snippet modifies the "Review Notification" emails.
 *
 * This replaces the {wc_coupon} template tag in a Review Notification email to a
 * single-use discount code with a default discount of 10%.
 *
 * To change the discount amount, add the number to the template tag.
 * For example, set a 15% discount like this:
 *
 * {wc_coupon:15}.
 *
 * Change the discount type by adding the type to the template tag after the amount using a pipe character.
 * For example, set a fixed monetary discount of 25 to the entire cart total like this:
 *
 * {wc_coupon:25|fixed_cart}
 *
 * @return string
 */
add_filter('site-reviews-notifications/email/message', function ($content) {
    if (!function_exists('wc_get_coupon_id_by_code')) {
        return $content; // Abort if WooCommerce is not active
    }
    // This regex pattern matches:
    // - {wc_coupon}: No parameters, uses defaults (10% discount).
    // - {wc_coupon:15}: Specifies a discount amount of 15%.
    // - {wc_coupon:15|percent}: Specifies a discount amount of 15%.
    // - {wc_coupon:25|fixed_cart}: Specifies a 25-unit discount applied to the cart total.
    // - {wc_coupon:25|fixed_product}: Specifies a 25-unit discount applied to each eligible product in the cart.
    $regex = '/{wc_coupon(?::(\d+(?:\.\d+)?)(?:\|(percent|fixed_cart|fixed_product))?)?}/';
    return preg_replace_callback($regex, function ($match) {
        // Extract discount amount if present, otherwise default to 10
        $amount = max(0, (float) ($match[1] ?? 10));
        // Extract discount type if present, otherwise default to "percent"
        $type = $match[2] ?? 'percent';
        do {
            $prefix = 'THANKYOU-'; // prefix the coupon code with this
            $code = $prefix.strtoupper(wp_generate_password(8, false));
        } while (wc_get_coupon_id_by_code($code) !== 0);
        $coupon = new \WC_Coupon();
        $coupon->set_code($code);
        $coupon->set_discount_type($type); // Default type is "percent"
        $coupon->set_amount($amount); // Default amount is 10
        $coupon->set_usage_limit(1); // Can only be used once
        $coupon->set_individual_use(true); // Cannot be used with other coupons
        $coupon->set_exclude_sale_items(true); // Exclude sale items
        if ($coupon->save() > 0) {
            return $code;
        }
        glsr_log()->error("Failed to create coupon with code: {$code}");
        return 'COUPON_ERROR';
    }, $content);
});