ldc-crm/app/Http/Controllers/Bo/SingleOptinController.php

<?php

namespace App\Http\Controllers\Bo;

use App\Http\Controllers\Controller;
use App\Models\Answer;
use App\Models\Question;
use App\Models\SingleOptin;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Http\Request;
use Illuminate\Support\Collection;
use Illuminate\Support\Str;

class SingleOptinController extends Controller
{
    /**
     * Create the controller instance.
     */
    public function __construct()
    {
        $this->authorizeResource(SingleOptin::class);
    }

    /**
     * Display a listing of the resource.
     *
     * @param \Illuminate\Http\Request $request
     * @return \Illuminate\Contracts\View\View
     */
    public function index(Request $request): \Illuminate\Contracts\View\View
    {
        $query          = SingleOptin::query();
        $questionModels = null;
        $answerModels   = null;

        $this->applyBrandAndAnswerFilters($request, $query, $questionModels, $answerModels);
        $this->applySearch($request, $query);
        $this->sortQuery($query);

        $query->with('brand');
        $singleoptinModels = $this->paginate($query);
        $searchFields      = trans('E-mail');

        return view('bo.pages.singleoptins.index', [
            'singleoptinModels' => $singleoptinModels,
            'searchFields'      => $searchFields,
            'questionModels'    => $questionModels,
            'answerModels'      => $answerModels,
        ]);
    }


    /**
     * Remove the specified resource from storage.
     *
     * @param \App\Models\SingleOptin $singleoptin
     * @return \Illuminate\Http\RedirectResponse
     */
    public function destroy(SingleOptin $singleoptin): \Illuminate\Http\RedirectResponse
    {
        $singleoptin->answers()->detach();
        if ($singleoptin->deleteOrFail()) {
            return redirect()->route('bo.single_optins.index')
                ->with('success', trans(
                    ':model a été supprimé.',
                    ['model' => Str::singular(trans('models.classes.singleoptins'))]
                ));
        }
        return redirect()->back()
            ->with('error', trans(
                ':model n\'a pas pu être supprimé.',
                ['model' => Str::singular(trans('models.classes.singleoptins'))]
            ));
    }

    /**
     * Undocumented function
     *
     * @param \Illuminate\Http\Request              $request
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @param \Illuminate\Support\Collection|null   $questionModels
     * @param \Illuminate\Support\Collection|null   $answerModels
     * @return void
     */
    private function applyBrandAndAnswerFilters(
        Request $request,
        Builder $query,
        ?Collection &$questionModels,
        ?Collection &$answerModels
    ): void {
        if (!$request->filled('brand')) {
            return;
        }

        $brandId = $request->brand;
        $query->whereHas('brand', fn($q) => $q->whereKey($brandId));
        $questionModels = Question::getAllModelsFromBrand($brandId);

        if (!$request->filled('question')) {
            return;
        }

        $questionId = $request->question;
        $question   = Question::find($questionId);

        if ($question) {
            $questionAnswers = $question->answers->modelKeys();
            $query->whereHas('answers', fn($q) => $q->whereIn('answer_id', $questionAnswers));
            $answerModels = Answer::getAllAnswersFromQuestion($questionId);
        }

        if ($request->filled('answer')) {
            $query->whereHas('answers', fn($q) => $q->whereKey($request->answer));
        }
    }

    /**
     * Apply search filter.
     *
     * @param \Illuminate\Http\Request              $request
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @return void
     */
    private function applySearch(Request $request, Builder $query): void
    {
        if ($request->filled('search')) {
            $this->searchQuery($query, $request->search, null, 'email');
        }
    }
}