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<?php |
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namespace Andegna\Ethiopian; |
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use Andegna\Converter\Converter; |
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use Andegna\Converter\FromJdnConverter; |
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use Andegna\Validator\LeapYearValidator; |
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use DateTime as BaseDateTime; |
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use DateTimeZone; |
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/** |
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* Class DateTime. |
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* |
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* @method getYear |
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* @method getMonth |
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* @method getDay |
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* @method getDayOfYear |
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* @method getDaysInMonth |
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* @method getIsoWeekNumber |
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* @method getIsoYearNumber |
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* @method isLeapYear |
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* @method getHour |
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* @method getMinute |
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* @method getSecond |
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* @method getMicro |
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* @method getDayOfWeek |
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* @method getTimestamp |
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*/ |
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class DateTime |
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{ |
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use DateTimeProcessor, |
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DateFormatter; |
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/** @var int */ |
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protected $year; |
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/** @var int */ |
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protected $month; |
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/** @var int */ |
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protected $day; |
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/** @var int */ |
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protected $dayOfYear; |
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/** @var int */ |
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protected $daysInMonth; |
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/** @var int */ |
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protected $isoWeekNumber; |
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/** @var int */ |
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protected $isoYearNumber; |
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/** @var bool */ |
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protected $leapYear; |
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/** @var BaseDateTime dateTime */ |
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protected $dateTime; |
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/** |
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* DateTime constructor. |
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* |
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* @param BaseDateTime|null $dateTime |
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*/ |
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public function __construct(BaseDateTime $dateTime = null) |
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{ |
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if (is_null($dateTime)) { |
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$this->dateTime = $this->defaultDateTime(); |
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} else { |
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$this->dateTime = $dateTime; |
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} |
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$this->updateComputedFields(); |
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} |
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/** |
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* @return BaseDateTime |
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*/ |
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protected function defaultDateTime() |
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{ |
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$dateTimeZone = new DateTimeZone(date_default_timezone_get()); |
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// just like the default \DateTime constructor |
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return new BaseDateTime('now', $dateTimeZone); |
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} |
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/** |
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* This fields are just for catching. |
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* |
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* @return void |
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*/ |
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protected function updateComputedFields() |
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{ |
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// Julian Date Number of the available datetime |
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$jdn = $this->getJdnFromBase($this->dateTime); |
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$converter = new FromJdnConverter($jdn); |
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$this->setDateFromConverter($converter); |
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$this->computeFields(); |
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} |
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/** |
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* Return the JDN of the given gregorian date time. |
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* |
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* @param BaseDateTime $dateTime |
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* |
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* @return int |
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*/ |
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protected function getJdnFromBase(BaseDateTime $dateTime) |
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{ |
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$year = $dateTime->format('Y'); |
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$month = $dateTime->format('m'); |
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$day = $dateTime->format('d'); |
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return gregoriantojd($month, $day, $year); |
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} |
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/** |
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* Set the converted year, month and day from the given converter. |
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* |
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* @param Converter $converter |
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* |
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* @return void |
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*/ |
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protected function setDateFromConverter(Converter $converter) |
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{ |
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$this->year = $converter->getYear(); |
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$this->month = $converter->getMonth(); |
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$this->day = $converter->getDay(); |
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} |
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/** |
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* Computer the available properties. |
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* |
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* @return void |
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*/ |
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protected function computeFields() |
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{ |
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$this->computeLeapYear(); |
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$this->computeDayOfYear(); |
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$this->computeDaysInMonth(); |
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$this->computeIsoDateNumber(); |
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} |
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/** |
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* Compute the leapYear property. |
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* |
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* @return void |
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*/ |
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protected function computeLeapYear() |
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{ |
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$leapYear = new LeapYearValidator($this->year); |
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$this->leapYear = $leapYear->isValid(); |
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} |
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/** |
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* Compute the dayOfYear property. |
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* |
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* @return void |
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*/ |
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protected function computeDayOfYear() |
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{ |
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$this->dayOfYear = ($this->month - 1) * 30 + ($this->day - 1); |
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} |
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/** |
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* Compute the daysInMonth property. |
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* |
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* @return void |
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*/ |
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protected function computeDaysInMonth() |
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{ |
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if ($this->month === 13) { |
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$this->daysInMonth = $this->leapYear ? 6 : 5; |
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} |
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$this->daysInMonth = 30; |
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} |
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/** |
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* Compute the isoWeekNumber and isoYearNumber properties. |
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* |
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* @return void |
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*/ |
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protected function computeIsoDateNumber() |
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{ |
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$weekNumber = $this->getISOWeekNumberEstimate(); |
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$yearNumber = $this->year; |
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if ($weekNumber == 0) { |
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$yearNumber--; |
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$weekNumber = $this->getLastYearLastIsoWeekNumber(); |
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} elseif ($weekNumber == 53 && $this->doesYearHas53Weeks($this->year)) { |
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$yearNumber++; |
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$weekNumber = 1; |
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} |
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$this->isoWeekNumber = $weekNumber; |
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$this->isoYearNumber = $yearNumber; |
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} |
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/** |
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* @return int |
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*/ |
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protected function getISOWeekNumberEstimate() |
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{ |
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return (int) floor(($this->getDayOfYear() - $this->getDayOfWeek() + 10) / 7); |
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} |
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/** |
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* @return int |
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*/ |
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protected function getLastYearLastIsoWeekNumber() |
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{ |
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return DateTimeFactory::lastDayOf($this->year - 1) |
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->getIsoWeekNumber(); |
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} |
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/** |
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* @param $year |
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* |
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* @return bool |
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*/ |
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protected function doesYearHas53Weeks($year) |
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{ |
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$leapYear = (new LeapYearValidator($year))->isValid(); |
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$lastDayOfTheWeek = DateTimeFactory::lastDayOf($year)->getDayOfWeek(); |
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return ($lastDayOfTheWeek == 5 && !$leapYear) |
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|| $lastDayOfTheWeek != 4; |
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} |
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/** |
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* Return the <b>clone</b> of the base gregorian date time. |
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* |
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* @return BaseDateTime |
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*/ |
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public function toGregorian() |
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{ |
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return clone $this->dateTime; |
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} |
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} |
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If you implement
__calland you know which methods are available, you can improve IDE auto-completion and static analysis by adding a @method annotation to the class.This is often the case, when
__callis implemented by a parent class and only the child class knows which methods exist: