ldc-crm/app/Http/Resources/Api/V4/QuestionsResource.php

<?php

namespace App\Http\Resources\Api\V4;

use App\Models\Answer;
use App\Models\Question;
use Illuminate\Http\Request;
use Illuminate\Http\Resources\Json\ResourceCollection as JsonResourceCollection;
use Illuminate\Support\Collection;

class QuestionsResource extends JsonResourceCollection
{
    /** @var \Illuminate\Support\Collection<\App\Models\CustomerAnswer> */
    protected $userAnswers = null;

    /**
     * Create a new resource instance.
     *
     * @param  mixed                                                      $resource
     * @param  \Illuminate\Support\Collection<\App\Models\CustomerAnswer> $userAnswers
     * @return void
     * @phpcs:disable Squiz.Commenting.FunctionComment.IncorrectTypeHint
     */
    public function __construct(mixed $resource, Collection $userAnswers = null)
    {
        //phpcs:enable
        $this->userAnswers = $userAnswers;
        parent::__construct($resource);
    }

    /**
     * Transform the resource into an array.
     *
     * @param \Illuminate\Http\Request $request
     * @return \Illuminate\Support\Collection
     * @phpcs:disable Generic.CodeAnalysis.UnusedFunctionParameter.FoundInExtendedClass
     */
    public function toArray(Request $request): \Illuminate\Support\Collection
    {
        //phpcs:enable
        return $this->collection->map(function (Question $question) {
            /** @var \Illuminate\Support\Collection */
            $answers  = $question->answers;
            $question = [
                'id' => $question->id,
                'type' => $question->type->value(),
                'question' => $question->question,
                'answers' => new AnswersResource($answers)
            ];
            if ($this->userAnswers) {
                $question['customerAnswers'] = new AnswersResource($answers->filter(function (Answer $answer) {
                    return $this->userAnswers->keyBy('id')->has($answer->id);
                }));
            }
            return $question;
        });
    }
}