<?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
);
}
}
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