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<?php namespace Arcanedev\LaravelMetrics\Helpers; |
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use Arcanedev\LaravelMetrics\Exceptions\InvalidTrendUnitException; |
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use Arcanedev\LaravelMetrics\Metrics\Trend; |
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use Cake\Chronos\Chronos; |
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use Illuminate\Support\Collection; |
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/** |
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* Class TrendDatePeriod |
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* |
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* @package Arcanedev\LaravelMetrics\Helpers |
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* @author ARCANEDEV <[email protected]> |
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*/ |
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class TrendDatePeriod |
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{ |
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/* ----------------------------------------------------------------- |
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| Main Methods |
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| ----------------------------------------------------------------- |
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*/ |
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/** |
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* Make date period (range) for the trend metric. |
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* |
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* @param \Cake\Chronos\Chronos $start |
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* @param \Cake\Chronos\Chronos $end |
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* @param string $unit |
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* @param mixed|null $timezone |
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* |
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* @return \Illuminate\Support\Collection |
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*/ |
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public static function make(Chronos $start, Chronos $end, string $unit, $timezone = null) |
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{ |
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$period = new Collection; |
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$next = $start; |
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if ( ! empty($timezone)) { |
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$next = $start->setTimezone($timezone); |
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$end = $end->setTimezone($timezone); |
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} |
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$period->push($next); |
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while ($next->lt($end)) { |
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$next = static::getNextDate($unit, $next); |
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if ($next->lte($end)) |
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$period->push($next); |
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} |
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return $period; |
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} |
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/** |
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* Get the starting date. |
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* |
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* @param string $unit |
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* @param mixed|null $range |
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* |
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* @return \Cake\Chronos\Chronos |
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*/ |
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public static function getStartingDate(string $unit, $range = null): Chronos |
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{ |
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$range = empty($range) ? 1 : ($range - 1); |
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$now = Chronos::now(); |
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switch ($unit) { |
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case Trend::BY_MONTHS: |
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return $now->subMonths($range)->firstOfMonth()->setTime(0, 0); |
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case Trend::BY_WEEKS: |
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return $now->subWeeks($range)->startOfWeek()->setTime(0, 0); |
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case Trend::BY_DAYS: |
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return $now->subDays($range)->setTime(0, 0); |
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case Trend::BY_HOURS: |
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return with($now->subHours($range), function (Chronos $date) { |
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return $date->setTime($date->hour, 0); |
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}); |
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case Trend::BY_MINUTES: |
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return with($now->subMinutes($range), function (Chronos $date) { |
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return $date->setTime($date->hour, $date->minute); |
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}); |
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default: |
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throw InvalidTrendUnitException::make($unit); |
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} |
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} |
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/* ----------------------------------------------------------------- |
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| Other Methods |
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| ----------------------------------------------------------------- |
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*/ |
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/** |
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* Get next date. |
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* |
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* @param string $unit |
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* @param \Cake\Chronos\Chronos $next |
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* |
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* @return \Cake\Chronos\Chronos |
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*/ |
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private static function getNextDate(string $unit, Chronos $next): Chronos |
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{ |
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switch ($unit) { |
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case Trend::BY_MONTHS: |
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return $next->addMonths(1); |
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case Trend::BY_WEEKS: |
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return $next->addWeeks(1); |
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case Trend::BY_DAYS: |
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return $next->addDays(1); |
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case Trend::BY_HOURS: |
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return $next->addHours(1); |
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case Trend::BY_MINUTES: |
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return $next->addMinutes(1); |
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default: |
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throw InvalidTrendUnitException::make($unit); |
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} |
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} |
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} |
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Let’s assume you have a class which uses late-static binding:
}
The code above will run fine in your PHP runtime. However, if you now create a sub-class and call the
getSomeVariable()
on that sub-class, you will receive a runtime error:In the case above, it makes sense to update
SomeClass
to useself
instead: