ldc-crm/app/Http/Controllers/Api/V2/OptinController.php

<?php

namespace App\Http\Controllers\Api\V2;

use App\Enums\ApiError;
use App\Exceptions\Api\V2\ApiErrorException;
use App\Http\Controllers\Controller;
use App\Http\Requests\Api\V2\SingleOptinRequest;
use App\Models\CustomerInfo;
use App\Models\Service;
use App\Models\SingleOptin;

class OptinController extends Controller
{
    /**
     * Store a newly created resource in storage.
     *
     * @param \App\Request\SingleOptinRequest  $request
     * @param \App\Models\Service $service
     * @return \Illuminate\Http\JsonResponse
     */
    public function optin(SingleOptinRequest $request, Service $service)
    {
        /** @var \App\Models\SingleOptin */
        $singleOptin = SingleOptin::where('email', $request->email)->firstOrNew();

        if ($request->opt_in) {
            if (CustomerInfo::getFromEmail($service->brand, $request->email)->where('opt_in', true)->exists()) {
                throw new ApiErrorException(ApiError::singleOptinCustomerExists());
            }
            $singleOptin->fill($request->validated());
            $singleOptin->brand()->associate($service->brand);
            $singleOptin->saveOrFail();
        } else {
            $singleOptin->delete();
        }
        return response()->json();
    }
}