class-media-item-stats.php
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<?php
namespace Smush\Core\Media;
class Media_Item_Stats {
/**
* @var int
*/
private $size_before = 0;
/**
* @var int
*/
private $size_after = 0;
/**
* @var float
*/
private $time = 0.0;
/**
* @return float
*/
public function get_percent() {
return $this->calculate_percentage(
$this->get_size_before(),
$this->get_size_after()
);
}
public function get_human_bytes() {
$bytes = $this->get_bytes();
return size_format(
$bytes,
$bytes >= 1024 ? 1 : 0
);
}
/**
* @return int
*/
public function get_bytes() {
$size_before = $this->get_size_before();
$size_after = $this->get_size_after();
return $size_before > $size_after
? $size_before - $size_after
: 0;
}
/**
* @return int
*/
public function get_size_before() {
return $this->size_before;
}
/**
* @param int $size_before
*/
public function set_size_before( $size_before ) {
$this->size_before = (int) $size_before;
}
/**
* @return int
*/
public function get_size_after() {
return $this->size_after;
}
/**
* @param int $size_after
*/
public function set_size_after( $size_after ) {
$this->size_after = (int) $size_after;
}
/**
* @return float
*/
public function get_time() {
return $this->time;
}
/**
* @param float $time
*/
public function set_time( $time ) {
$this->time = (float) $time;
}
public function from_array( $array ) {
$this->set_time( (float) $this->get_array_value( $array, 'time' ) );
$this->set_size_before( (int) $this->get_array_value( $array, 'size_before' ) );
$this->set_size_after( (int) $this->get_array_value( $array, 'size_after' ) );
}
public function is_empty() {
return empty( $this->get_size_before() ) && empty( $this->get_size_after() );
}
public function to_array() {
return array(
'time' => $this->get_time(),
'bytes' => $this->get_bytes(),
'percent' => $this->get_percent(),
'size_before' => $this->get_size_before(),
'size_after' => $this->get_size_after(),
);
}
protected function get_array_value( $array, $key ) {
return isset( $array[ $key ] ) ? $array[ $key ] : null;
}
/**
* Add values from the passed stats object to the current object
*
* @param $addend Media_Item_Stats
*
* @return void
*/
public function add( $addend ) {
$new_size_before = $this->get_size_before() + $addend->get_size_before();
$new_size_after = $this->get_size_after() + $addend->get_size_after();
$new_time = $this->get_time() + $addend->get_time();
// Update with new values
$this->set_time( $new_time );
$this->set_size_before( $new_size_before );
$this->set_size_after( $new_size_after );
}
/**
* @param $subtrahend Media_Item_Stats
*
* @return void
*/
public function subtract( $subtrahend ) {
$new_size_before = $this->get_size_before() - $subtrahend->get_size_before();
$new_size_after = $this->get_size_after() - $subtrahend->get_size_after();
$new_time = $this->get_time() - $subtrahend->get_time();
// Update with new values
$this->set_time( max( $new_time, 0 ) );
$this->set_size_before( max( $new_size_before, 0 ) );
$this->set_size_after( max( $new_size_after, 0 ) );
}
/**
* @param $to_check Media_Item_Stats
*
* @return boolean
*/
public function equals( $to_check ) {
return $this->get_size_before() === $to_check->get_size_before()
&& $this->get_size_after() === $to_check->get_size_after()
&& $this->get_time() === $to_check->get_time();
}
private function calculate_percentage( $size_before, $size_after ) {
$savings = $size_before - $size_after;
if ( $savings > 0 && $size_before > 0 ) {
$percentage = ( $savings / $size_before ) * 100;
return $percentage > 0
? round( $percentage, 2 )
: $percentage;
}
return 0;
}
/**
* @param $to_copy Media_Item_Stats
*
* @return void
*/
public function copy( $to_copy ) {
$this->from_array( $to_copy->to_array() );
}
}