<?php
/*
 * ShowController.php
 * Copyright (c) 2021 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/>.
 */

namespace FireflyIII\Api\V1\Controllers\Models\BudgetLimit;

use FireflyIII\Api\V1\Controllers\Controller;
use FireflyIII\Exceptions\FireflyException;
use FireflyIII\Models\Budget;
use FireflyIII\Models\BudgetLimit;
use FireflyIII\Repositories\Budget\BudgetLimitRepositoryInterface;
use FireflyIII\Repositories\Budget\BudgetRepositoryInterface;
use FireflyIII\Transformers\BudgetLimitTransformer;
use FireflyIII\User;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Pagination\LengthAwarePaginator;
use League\Fractal\Pagination\IlluminatePaginatorAdapter;
use League\Fractal\Resource\Collection as FractalCollection;
use League\Fractal\Resource\Item;

/**
 * Class ShowController
 */
class ShowController extends Controller
{
    private BudgetLimitRepositoryInterface $blRepository;
    private BudgetRepositoryInterface      $repository;

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

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

    /**
     * Display a listing of the budget limits for this budget..
     *
     * @param Request $request
     *
     * @return JsonResponse
     * @codeCoverageIgnore
     */
    public function index(Request $request, Budget $budget): JsonResponse
    {
        $manager = $this->getManager();
        $manager->parseIncludes('budget');
        $pageSize     = (int)app('preferences')->getForUser(auth()->user(), 'listPageSize', 50)->data;
        $collection   = $this->blRepository->getBudgetLimits($budget, $this->parameters->get('start'), $this->parameters->get('end'));
        $count        = $collection->count();
        $budgetLimits = $collection->slice(($this->parameters->get('page') - 1) * $pageSize, $pageSize);
        $paginator    = new LengthAwarePaginator($budgetLimits, $count, $pageSize, $this->parameters->get('page'));
        $paginator->setPath(route('api.v1.budgets.limits.index', [$budget->id]) . $this->buildParams());

        /** @var BudgetLimitTransformer $transformer */
        $transformer = app(BudgetLimitTransformer::class);
        $transformer->setParameters($this->parameters);

        $resource = new FractalCollection($budgetLimits, $transformer, 'budget_limits');
        $resource->setPaginator(new IlluminatePaginatorAdapter($paginator));

        return response()->json($manager->createData($resource)->toArray())->header('Content-Type', self::CONTENT_TYPE);
    }

    /**
     * @param Request     $request
     * @param Budget      $budget
     * @param BudgetLimit $budgetLimit
     *
     * @return JsonResponse
     */
    public function show(Request $request, Budget $budget, BudgetLimit $budgetLimit): JsonResponse
    {
        if ((int)$budget->id !== (int)$budgetLimit->budget_id) {
            throw new FireflyException('20028: The budget limit does not belong to the budget.');
        }
        // continue!
        $manager = $this->getManager();

        /** @var BudgetLimitTransformer $transformer */
        $transformer = app(BudgetLimitTransformer::class);
        $transformer->setParameters($this->parameters);

        $resource = new Item($budgetLimit, $transformer, 'budget_limits');

        return response()->json($manager->createData($resource)->toArray())->header('Content-Type', self::CONTENT_TYPE);
    }


}