wticreatorstudio/Modules/MLMDownline/Services/AugmentationService.php

<?php

namespace Modules\MLMDownline\Services;

class AugmentationService
{
    public function __construct()
    {
        $this->addCodeToStaffIndexBlade();
    }

    public function addCodeToStaffIndexBlade()
    {
        $masterPath = resource_path('/views/backEnd/staffs/index.blade.php');
        if (file_exists($masterPath)) {
            $content = file_get_contents($masterPath);
            $elementExists = null;

            // Check added code if already exists
            preg_match("/\@if\(permissionCheck\('can_have_downline'\)/", $content, $elementExists);
            if ($elementExists) return;

            preg_match('/\<div class\="dropdown-menu dropdown-menu-right" aria-labelledby\="dropdownMenu2"\>/', $content, $matchedElement);
            $codes = "";
            if ($matchedElement) {
                $codes .= "{$matchedElement[0]}
                    @if(permissionCheck('can_have_downline') && checkUserPermission(\$staff->user, 'mlm-downline.index'))
                    <a href=\"{{ route('can_have_downline', \$staff->id) }}\" class=\"dropdown-item\">Downline</a>
                    @endif
                ";
                $appendContent = preg_replace('/\<div class\="dropdown-menu dropdown-menu-right" aria-labelledby\="dropdownMenu2"\>/', $codes, $content);
                file_put_contents($masterPath, $appendContent, LOCK_EX);
            }
        }
    }
}