ctrlpanel/app/Http/Controllers/Admin/SettingsControllers/SettingsController.php

<?php

namespace App\Http\Controllers\Admin\SettingsControllers;

use App\Http\Controllers\Controller;
use App\Models\InvoiceSettings;
use Illuminate\Contracts\Foundation\Application;
use Illuminate\Contracts\View\Factory;
use Illuminate\Contracts\View\View;
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use ZipArchive;

class SettingsController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return Application|Factory|View|Response
     */
    public function index()
    {
        //Get all tabs as laravel view paths
        $tabs = [];
        foreach (glob(resource_path('views/admin/settings/tabs/*.blade.php')) as $filename) {
            $tabs[] = 'admin.settings.tabs.' . basename($filename, '.blade.php');
        }

        // <li class="nav-item">
        //     <a class="nav-link" data-toggle="pill" href="#invoice">{{ __('Invoice Settings2') }}</a>
        // </li>

        //Generate a html list item for each tab based on tabs file basename
        $tabsListItem = [];
        foreach ($tabs as $tab) {
            $tabsListItem[] = '<li class="nav-item"><a class="nav-link" href="' . route('admin.settings.index', ['tab' => $tab]) . '">' . str_replace('_', ' ', ucfirst(basename($tab, '.blade.php'))) . '</a></li>';
        }

        return view('admin.settings.index', [
            'tabs' => $tabs,
        ]);;
    }

    public function updateIcons(Request $request)
    {
        $request->validate([
            'icon' => 'nullable|max:10000|mimes:jpg,png,jpeg',
            'favicon' => 'nullable|max:10000|mimes:ico',
        ]);

        if ($request->hasFile('icon')) {
            $request->file('icon')->storeAs('public', 'icon.png');
        }

        if ($request->hasFile('favicon')) {
            $request->file('favicon')->storeAs('public', 'favicon.ico');
        }

        return redirect()->route('admin.settings.index')->with('success', __('Icons updated!'));
    }

    public function updateInvoiceSettings(Request $request)
    {
        $request->validate([
            'logo' => 'nullable|max:10000|mimes:jpg,png,jpeg',
        ]);

        InvoiceSettings::updateOrCreate([
            'id' => "1"
        ], [
            'company_name' => $request->get('company-name'),
            'company_adress' => $request->get('company-address'),
            'company_phone' => $request->get('company-phone'),
            'company_mail' => $request->get('company-mail'),
            'company_vat' => $request->get('company-vat'),
            'company_web' => $request->get('company-web'),
            'invoice_prefix' => $request->get('invoice-prefix'),
        ]);

        if ($request->hasFile('logo')) {
            $request->file('logo')->storeAs('public', 'logo.png');
        }


        return redirect()->route('admin.settings.index')->with('success', 'Invoice settings updated!');
    }

    public function downloadAllInvoices()
    {
        $zip = new ZipArchive;
        $zip_safe_path = storage_path('invoices.zip');
        $res = $zip->open($zip_safe_path, ZipArchive::CREATE | ZipArchive::OVERWRITE);
        $result = $this::rglob(storage_path('app/invoice/*'));
        if ($res === TRUE) {
            $zip->addFromString("1. Info.txt", "This Archive contains all Invoices from all Users!\nIf there are no Invoices here, no Invoices have ever been created!");
            foreach ($result as $file) {
                if (file_exists($file) && is_file($file)) {
                    $zip->addFile($file, basename($file));
                }
            }
            $zip->close();
        }
        return response()->download($zip_safe_path);
    }

    public function rglob($pattern, $flags = 0)
    {
        $files = glob($pattern, $flags);
        foreach (glob(dirname($pattern) . '/*', GLOB_ONLYDIR | GLOB_NOSORT) as $dir) {
            $files = array_merge($files, $this::rglob($dir . '/' . basename($pattern), $flags));
        }
        return $files;
    }
}