function abc_handle_csv_upload() {
    if (!isset($_POST['upload_csv']) || !check_admin_referer('abc_csv_upload', 'abc_csv_nonce')) return;

    global $wpdb;

    // مسیر دلخواه: wp-content/uploads/abc_csv_uploads/
    $upload_base = wp_upload_dir();
    $upload_dir = trailingslashit($upload_base['basedir']) . 'abc_csv_uploads/';
    $upload_url = trailingslashit($upload_base['baseurl']) . 'abc_csv_uploads/';

    // ساخت پوشه در صورت نیاز
    if (!file_exists($upload_dir)) {
        wp_mkdir_p($upload_dir);
    }

    $uploadedfile = $_FILES['csv_file'];
    $original_name = sanitize_file_name($uploadedfile['name']);
    $new_name = uniqid() . '-' . $original_name;
    $destination = $upload_dir . $new_name;

    if (move_uploaded_file($uploadedfile['tmp_name'], $destination)) {
        echo '<div class="notice notice-success"><p>فایل با موفقیت آپلود شد.</p></div>';

        $file_url = $upload_url . $new_name;

        $wpdb->insert(
            $wpdb->prefix . 'abc_csv_files',
            ['file_url' => esc_url($file_url), 'uploaded_at' => current_time('mysql')]
        );
        $file_id = $wpdb->insert_id;

        // پردازش CSV و درج در جدول abc_csv_rows
        if (file_exists($destination)) {
            $csv = array_map('str_getcsv', file($destination));
            $headers = array_map('sanitize_text_field', array_shift($csv));

            foreach ($csv as $row) {
                $data = array_combine($headers, array_map('sanitize_text_field', $row));
                if (isset($data['comment_post_ID'], $data['comment_content'])) {
                    $wpdb->insert($wpdb->prefix . 'abc_csv_rows', [
                        'file_id' => $file_id,
                        'post_id' => intval($data['comment_post_ID']),
                        'author' => $data['comment_author'] ?? 'Anonymous',
                        'email' => $data['comment_author_email'] ?? '',
                        'content' => $data['comment_content'],
                        'approved' => isset($data['comment_approved']) ? intval($data['comment_approved']) : 1,
                        'comment_date' => $data['comment_date'] ?? current_time('mysql'),
                        'status' => 'pending'
                    ]);
                    $comment_id = $wpdb->insert_id;

                    // درج پاسخ در صورت وجود reply_content
                    if (!empty($data['reply_content'])) {
                        $comment_data = [
                            'comment_post_ID' => intval($data['comment_post_ID']),
                            'comment_content' => $data['reply_content'],
                            'comment_parent' => $comment_id,
                            'comment_author' => 'مدیر',
                            'comment_approved' => 1,
                            'user_id' => get_current_user_id(),
                        ];
                        wp_insert_comment($comment_data);
                    }
                }
            }
        }

    } else {
        echo '<div class="notice notice-error"><p>در آپلود فایل مشکلی پیش آمد.</p></div>';
    }
}