SpiceManagementSystem/app/Http/Controllers/ShopifyInstallController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Http;

class ShopifyInstallController extends Controller
{
    private string $clientId;
    private string $clientSecret;
    private string $shop;
    private string $scopes = 'read_products,read_inventory,read_orders';

    public function __construct()
    {
        $this->clientId     = '1b6430c8cc94b5e58716235abd9bbd73';
        $this->clientSecret = config('services.shopify.webhook_secret');
        $this->shop         = 'bluefootedboobyspices.myshopify.com';
    }

    public function install()
    {
        $url = "https://{$this->shop}/admin/oauth/authorize"
            . "?client_id={$this->clientId}"
            . "&scope={$this->scopes}"
            . "&state=spicesetup";

        return redirect($url);
    }

    public function callback(Request $request)
    {
        $code = $request->query('code');

        if (!$code) {
            return response('Kein Code empfangen. ' . $request->getQueryString(), 400);
        }

        $response = Http::post("https://{$this->shop}/admin/oauth/access_token", [
            'client_id'     => $this->clientId,
            'client_secret' => $this->clientSecret,
            'code'          => $code,
        ]);

        if ($response->failed()) {
            return response('Token-Exchange fehlgeschlagen: ' . $response->body(), 500);
        }

        $token = $response->json('access_token');

        return response("<pre>SHOPIFY_ACCESS_TOKEN={$token}</pre>");
    }
}