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<?php declare(strict_types = 1); |
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namespace Churn\Results; |
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use Illuminate\Contracts\Support\Arrayable; |
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use Webmozart\Assert\Assert; |
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class Result implements Arrayable |
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{ |
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/** |
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* The file property. |
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* @var string |
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*/ |
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private $file; |
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/** |
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* The commits property. |
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* @var integer |
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*/ |
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private $commits; |
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/** |
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* The complexity property. |
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* @var integer |
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*/ |
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private $complexity; |
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/** |
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* Class constructor. |
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* @param array $data Data to store in the object. |
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*/ |
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public function __construct(array $data) |
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{ |
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$this->file = $data['file']; |
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$this->commits = $data['commits']; |
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$this->complexity = $data['complexity']; |
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} |
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/** |
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* Get the file property. |
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* @return string |
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*/ |
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public function getFile(): string |
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{ |
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return $this->file; |
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} |
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/** |
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* Get the file property. |
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* @return integer |
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*/ |
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public function getCommits(): int |
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{ |
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return $this->commits; |
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} |
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/** |
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* Get the file property. |
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* @return integer |
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*/ |
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public function getComplexity(): int |
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{ |
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return $this->complexity; |
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} |
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/** |
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* Calculate the score. |
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* @return float |
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*/ |
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public function getScore(int $maxCommits, int $maxComplexity): float |
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{ |
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Assert::greaterThan($maxComplexity, 0); |
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Assert::greaterThan($maxCommits, 0); |
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/* |
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* Calculate the horizontal and vertical distance from the "top right" |
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* corner. |
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*/ |
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$horizontalDistance = $maxCommits - $this->getCommits(); |
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$verticalDistance = $maxComplexity - $this->getComplexity(); |
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/* |
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* Normalize these values over time, we first divide by the maximum |
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* values, to always end up with distances between 0 and 1. |
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*/ |
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$normalizedHorizontalDistance = $horizontalDistance / $maxCommits; |
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$normalizedVerticalDistance = $verticalDistance / $maxComplexity; |
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/* |
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* Calculate the distance of this class from the "top right" corner, |
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* using the simple formula A^2 + B^2 = C^2; or: C = sqrt(A^2 + B^2)). |
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*/ |
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$distanceFromTopRightCorner = sqrt( |
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$normalizedHorizontalDistance ** 2 |
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+ $normalizedVerticalDistance ** 2 |
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); |
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/* |
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* The resulting value will be between 0 and sqrt(2). A short distance is bad, |
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* so in order to end up with a high score, we invert the value by |
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* subtracting it from 1. |
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*/ |
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return 1 - $distanceFromTopRightCorner; |
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} |
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/** |
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* Output results to an array. |
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* @return array |
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*/ |
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public function toArray(): array |
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{ |
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return [ |
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$this->getFile(), |
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$this->getCommits(), |
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$this->getComplexity() |
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]; |
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} |
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} |
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bmitch /
churn-php
