InvoiceShelf/app/Http/Controllers/Company/Settings/CompanySettingsController.php

<?php

namespace App\Http\Controllers\Company\Settings;

use App\Http\Controllers\Controller;
use App\Http\Requests\GetSettingsRequest;
use App\Http\Requests\UpdateSettingsRequest;
use App\Models\Company;
use App\Models\CompanySetting;
use Illuminate\Http\JsonResponse;
use Illuminate\Support\Arr;

class CompanySettingsController extends Controller
{
    public function show(GetSettingsRequest $request): JsonResponse
    {
        $settings = CompanySetting::getSettings((array) $request->settings, $request->header('company'));

        return response()->json($settings);
    }

    public function update(UpdateSettingsRequest $request): JsonResponse
    {
        $company = Company::find($request->header('company'));
        $this->authorize('manage company', $company);

        $data = $request->settings;

        if (
            Arr::exists($data, 'currency') &&
            (CompanySetting::getSetting('currency', $company->id) !== $data['currency']) &&
            $company->hasTransactions()
        ) {
            return response()->json([
                'success' => false,
                'message' => 'Cannot update company currency after transactions are created.',
            ]);
        }

        CompanySetting::setSettings($data, $request->header('company'));

        return response()->json([
            'success' => true,
        ]);
    }
}