firefly-iii/app/Helpers/FiscalHelperInterface.php

<?php
/**
 * FiscalHelperInterface.php
 * Copyright (c) 2017 thegrumpydictator@gmail.com
 *
 * This file is part of Firefly III.
 *
 * Firefly III is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Firefly III 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Firefly III. If not, see <http://www.gnu.org/licenses/>.
 */
declare(strict_types=1);

namespace FireflyIII\Helpers;

use Carbon\Carbon;

/**
 * Interface FiscalHelperInterface.
 */
interface FiscalHelperInterface
{
    /**
     * This method produces a clone of the Carbon date object passed, checks preferences
     * and calculates the last day of the fiscal year.
     *
     * @param Carbon $date
     *
     * @return Carbon date object
     */
    public function endOfFiscalYear(Carbon $date): Carbon;

    /**
     * This method produces a clone of the Carbon date object passed, checks preferences
     * and calculates the first day of the fiscal year.
     *
     * @param Carbon $date
     *
     * @return Carbon date object
     */
    public function startOfFiscalYear(Carbon $date): Carbon;
}