Subversion-Projekte lars-tiefland.laravel_shop

<?php

/**

 * This file is part of the Carbon package.

 *

 * (c) Brian Nesbitt <brian@nesbot.com>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

namespace Carbon\Traits;

/**

 * Trait Week.

 *

 * week and ISO week number, year and count in year.

 *

 * Depends on the following properties:

 *

 * @property int $daysInYear

 * @property int $dayOfWeek

 * @property int $dayOfYear

 * @property int $year

 *

 * Depends on the following methods:

 *

 * @method static addWeeks(int $weeks = 1)

 * @method static copy()

 * @method static dayOfYear(int $dayOfYear)

 * @method string getTranslationMessage(string $key, ?string $locale = null, ?string $default = null, $translator = null)

 * @method static next(int|string $day = null)

 * @method static startOfWeek(int $day = 1)

 * @method static subWeeks(int $weeks = 1)

 * @method static year(int $year = null)

 */

trait Week

{

    /**

     * Set/get the week number of year using given first day of week and first

     * day of year included in the first week. Or use ISO format if no settings

     * given.

     *

     * @param int|null $year      if null, act as a getter, if not null, set the year and return current instance.

     * @param int|null $dayOfWeek first date of week from 0 (Sunday) to 6 (Saturday)

     * @param int|null $dayOfYear first day of year included in the week #1

     *

     * @return int|static

     */

    public function isoWeekYear($year = null, $dayOfWeek = null, $dayOfYear = null)

    {

        return $this->weekYear(

            $year,

            $dayOfWeek ?? 1,

            $dayOfYear ?? 4

        );

    }

    /**

     * Set/get the week number of year using given first day of week and first

     * day of year included in the first week. Or use US format if no settings

     * given (Sunday / Jan 6).

     *

     * @param int|null $year      if null, act as a getter, if not null, set the year and return current instance.

     * @param int|null $dayOfWeek first date of week from 0 (Sunday) to 6 (Saturday)

     * @param int|null $dayOfYear first day of year included in the week #1

     *

     * @return int|static

     */

    public function weekYear($year = null, $dayOfWeek = null, $dayOfYear = null)

    {

        $dayOfWeek = $dayOfWeek ?? $this->getTranslationMessage('first_day_of_week') ?? 0;

        $dayOfYear = $dayOfYear ?? $this->getTranslationMessage('day_of_first_week_of_year') ?? 1;

        if ($year !== null) {

            $year = (int) round($year);

            if ($this->weekYear(null, $dayOfWeek, $dayOfYear) === $year) {

                return $this->avoidMutation();

            }

            $week = $this->week(null, $dayOfWeek, $dayOfYear);

            $day = $this->dayOfWeek;

            $date = $this->year($year);

            switch ($date->weekYear(null, $dayOfWeek, $dayOfYear) - $year) {

                case 1:

                    $date = $date->subWeeks(26);

                    break;

                case -1:

                    $date = $date->addWeeks(26);

                    break;

            }

            $date = $date->addWeeks($week - $date->week(null, $dayOfWeek, $dayOfYear))->startOfWeek($dayOfWeek);

            if ($date->dayOfWeek === $day) {

                return $date;

            }

            return $date->next($day);

        }

        $year = $this->year;

        $day = $this->dayOfYear;

        $date = $this->avoidMutation()->dayOfYear($dayOfYear)->startOfWeek($dayOfWeek);

        if ($date->year === $year && $day < $date->dayOfYear) {

            return $year - 1;

        }

        $date = $this->avoidMutation()->addYear()->dayOfYear($dayOfYear)->startOfWeek($dayOfWeek);

        if ($date->year === $year && $day >= $date->dayOfYear) {

            return $year + 1;

        }

        return $year;

    }

    /**

     * Get the number of weeks of the current week-year using given first day of week and first

     * day of year included in the first week. Or use ISO format if no settings

     * given.

     *

     * @param int|null $dayOfWeek first date of week from 0 (Sunday) to 6 (Saturday)

     * @param int|null $dayOfYear first day of year included in the week #1

     *

     * @return int

     */

    public function isoWeeksInYear($dayOfWeek = null, $dayOfYear = null)

    {

        return $this->weeksInYear(

            $dayOfWeek ?? 1,

            $dayOfYear ?? 4

        );

    }

    /**

     * Get the number of weeks of the current week-year using given first day of week and first

     * day of year included in the first week. Or use US format if no settings

     * given (Sunday / Jan 6).

     *

     * @param int|null $dayOfWeek first date of week from 0 (Sunday) to 6 (Saturday)

     * @param int|null $dayOfYear first day of year included in the week #1

     *

     * @return int

     */

    public function weeksInYear($dayOfWeek = null, $dayOfYear = null)

    {

        $dayOfWeek = $dayOfWeek ?? $this->getTranslationMessage('first_day_of_week') ?? 0;

        $dayOfYear = $dayOfYear ?? $this->getTranslationMessage('day_of_first_week_of_year') ?? 1;

        $year = $this->year;

        $start = $this->avoidMutation()->dayOfYear($dayOfYear)->startOfWeek($dayOfWeek);

        $startDay = $start->dayOfYear;

        if ($start->year !== $year) {

            $startDay -= $start->daysInYear;

        }

        $end = $this->avoidMutation()->addYear()->dayOfYear($dayOfYear)->startOfWeek($dayOfWeek);

        $endDay = $end->dayOfYear;

        if ($end->year !== $year) {

            $endDay += $this->daysInYear;

        }

        return (int) round(($endDay - $startDay) / 7);

    }

    /**

     * Get/set the week number using given first day of week and first

     * day of year included in the first week. Or use US format if no settings

     * given (Sunday / Jan 6).

     *

     * @param int|null $week

     * @param int|null $dayOfWeek

     * @param int|null $dayOfYear

     *

     * @return int|static

     */

    public function week($week = null, $dayOfWeek = null, $dayOfYear = null)

    {

        $date = $this;

        $dayOfWeek = $dayOfWeek ?? $this->getTranslationMessage('first_day_of_week') ?? 0;

        $dayOfYear = $dayOfYear ?? $this->getTranslationMessage('day_of_first_week_of_year') ?? 1;

        if ($week !== null) {

            return $date->addWeeks(round($week) - $this->week(null, $dayOfWeek, $dayOfYear));

        }

        $start = $date->avoidMutation()->dayOfYear($dayOfYear)->startOfWeek($dayOfWeek);

        $end = $date->avoidMutation()->startOfWeek($dayOfWeek);

        if ($start > $end) {

            $start = $start->subWeeks(26)->dayOfYear($dayOfYear)->startOfWeek($dayOfWeek);

        }

        $week = (int) ($start->diffInDays($end) / 7 + 1);

        return $week > $end->weeksInYear($dayOfWeek, $dayOfYear) ? 1 : $week;

    }

    /**

     * Get/set the week number using given first day of week and first

     * day of year included in the first week. Or use ISO format if no settings

     * given.

     *

     * @param int|null $week

     * @param int|null $dayOfWeek

     * @param int|null $dayOfYear

     *

     * @return int|static

     */

    public function isoWeek($week = null, $dayOfWeek = null, $dayOfYear = null)

    {

        return $this->week(

            $week,

            $dayOfWeek ?? 1,

            $dayOfYear ?? 4

        );

    }

}