firefly-iii/app/Api/V1/Controllers/Autocomplete/CategoryController.php

<?php
/**
 * CategoryController.php
 * Copyright (c) 2020 james@firefly-iii.org
 *
 * This file is part of Firefly III (https://github.com/firefly-iii).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace FireflyIII\Api\V1\Controllers\Autocomplete;

use FireflyIII\Api\V1\Controllers\Controller;
use FireflyIII\Api\V1\Requests\Autocomplete\AutocompleteRequest;
use FireflyIII\Models\Category;
use FireflyIII\Repositories\Category\CategoryRepositoryInterface;
use FireflyIII\User;
use Illuminate\Http\JsonResponse;

/**
 * Class CategoryController
 */
class CategoryController extends Controller
{
    private CategoryRepositoryInterface $repository;

    /**
     * CategoryController constructor.
     */
    public function __construct()
    {
        parent::__construct();
        $this->middleware(
            function ($request, $next) {
                /** @var User $user */
                $user             = auth()->user();
                $this->repository = app(CategoryRepositoryInterface::class);
                $this->repository->setUser($user);

                return $next($request);
            }
        );
    }

    /**
     * TODO add limit
     * @param AutocompleteRequest $request
     *
     * @return JsonResponse
     */
    public function categories(AutocompleteRequest $request): JsonResponse
    {
        $data     = $request->getData();
        $result   = $this->repository->searchCategory($data['query']);
        $filtered = $result->map(
            static function (Category $item) {
                return [
                    'id'   => $item->id,
                    'name' => $item->name,
                ];
            }
        );

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