TreeGen - Code Metrics - Inspection of "remove imports" - xoco70/laravel-tournaments - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 59b1f2...d98836 )

by Julien

created 2017-05-12 00:30 UTC

TreeGen B

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	336
Duplicated Lines	5.36 %

Coupling/Cohesion

Components	1
Dependencies	4

Importance

Changes

Metric	Value
wmc	40
c	0
b	0
f	0
lcom	1
cbo	4
dl	18
loc	336
rs	8.2608

17 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	7	1
A	run()	0	10	1
A	getMaxFightersByEntity()	0	10	1
A	getFightersByEntity()	0	13	2
A	getTreeSize()	0	14	3
A	repart()	0	14	4
C	insertByes()	0	25	7
A	generateGroupsForRound()	0	18	4
A	saveGroup()	0	13	2
A	createByeGroup()	9	9	2
A	adjustFightersGroupWithByes()	0	15	1
A	getPreviousRound()	0	5	1
A	getParentGroup()	0	6	1
A	pushGroups()	0	11	3
A	getFightersByArea()	0	18	2
A	addParentToChildren()	0	20	3
A	createNullsGroup()	9	9	2

How to fix Duplicated Code Complexity

Duplicated Code

Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.

Common duplication problems, and corresponding solutions are:

If you have the same expression in different places: Extract expression to a method
If you have the same method in different sub-classes: Extract method, and pull up field to the parent class
If you have the same code in unrelated classes: Consider extracting the code to a new class, and injecting that class

Complex Class

Tip: Before tackling complexity, make sure that you eliminate any duplication first. This often can reduce the size of classes significantly.

Complex classes like TreeGen often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.

Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.

While breaking up the class, it is a good idea to analyze how other classes use TreeGen, and based on these observations, apply Extract Interface, too.

<?php

namespace Xoco70\KendoTournaments\TreeGen;

use Illuminate\Support\Collection;
use Xoco70\KendoTournaments\Contracts\TreeGenerable;
use Xoco70\KendoTournaments\Exceptions\TreeGenerationException;
use Xoco70\KendoTournaments\Models\Championship;
use Xoco70\KendoTournaments\Models\ChampionshipSettings;
use Xoco70\KendoTournaments\Models\FightersGroup;

class TreeGen implements TreeGenerable
{
    protected $groupBy;
    protected $tree;
    public $championship;
    public $settings;
    protected $numFighters;

    /**
     * @param Championship $championship
     * @param $groupBy
     */
    public function __construct(Championship $championship, $groupBy)
    {
        $this->championship = $championship;
        $this->groupBy = $groupBy;
        $this->settings = $championship->getSettings();
        $this->tree = new Collection();
    }

    /**
     * Generate tree groups for a championship.
     *
     * @throws TreeGenerationException
     */
    public function run()
    {
        $usersByArea = $this->getFightersByArea();
        $numFighters = sizeof($usersByArea->collapse());

        $this->generateGroupsForRound($usersByArea, $area = 1, $round = 1, $shuffle = 1);
        $this->pushEmptyGroupsToTree($numFighters);
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
        $this->addParentToChildren($numFighters);
        // Now add parents to all
    }

    /**
     * Get the biggest entity group
     * @param $userGroups
     *
     * @return int
     */
    private function getMaxFightersByEntity($userGroups): int
    {
        return $userGroups
            ->sortByDesc(function ($group) {
                return $group->count();
            })
            ->first()
            ->count();

    }

    /**
     * Get Competitor's list ordered by entities
     * Countries for Internation Tournament, State for a National Tournament, etc.
     *
     * @return Collection
     */
    private function getFightersByEntity($fighters): Collection
    {
        // Right now, we are treating users and teams as equals.
        // It doesn't matter right now, because we only need name attribute which is common to both models

        // $this->groupBy contains federation_id, association_id, club_id, etc.
        if (($this->groupBy) != null) {
            $fighterGroups = $fighters->groupBy($this->groupBy); // Collection of Collection
        } else {
            $fighterGroups = $fighters->chunk(1); // Collection of Collection
        }
        return $fighterGroups;
    }

    /**
     * Get the size the first round will have
     * @param $fighterCount
     * @return int
     */
    protected function getTreeSize($fighterCount, $groupSize)
    {
        $square = collect([1, 2, 4, 8, 16, 32, 64]);
        $squareMultiplied = $square->map(function ($item, $key) use ($groupSize) {

            return $item * $groupSize;
        });

        foreach ($squareMultiplied as $limit) {
            if ($fighterCount <= $limit) {
                return $limit;
            }
        }
        return 64 * $groupSize;
    }

    /**
     * Repart BYE in the tree,
     * @param $fighterGroups
     * @param int $max
     *
     * @return Collection
     */
    private function repart($fighterGroups, $max)
    {
        $fighters = new Collection();
        for ($i = 0; $i < $max; $i++) {
            foreach ($fighterGroups as $fighterGroup) {
                $fighter = $fighterGroup->values()->get($i);
                if ($fighter != null) {
                    $fighters->push($fighter);
                }
            }
        }

        return $fighters;
    }

    /**
     * Insert byes in an homogen way.
     *
     * @param Collection $fighters
     * @param Collection $byeGroup
     *
     * @return Collection
     */
    private function insertByes(Collection $fighters, Collection $byeGroup)
    {
        $bye = count($byeGroup) > 0 ? $byeGroup[0] : [];
        $sizeFighters = count($fighters);
        $sizeGroupBy = count($byeGroup);

        $frequency = $sizeGroupBy != 0
            ? (int)floor($sizeFighters / $sizeGroupBy)
            : -1;

        // Create Copy of $competitors
        $newFighters = new Collection();
        $i = 0;
        $byeCount = 0;
        foreach ($fighters as $fighter) {
            if ($frequency != -1 && $i % $frequency == 0 && $byeCount < $sizeGroupBy) {
                $newFighters->push($bye);
                $byeCount++;
            }
            $newFighters->push($fighter);
            $i++;
        }

        return $newFighters;
    }

    /**
     * @param Collection $usersByArea
     * @param integer $area
     * @param integer $round
     * @param integer $shuffle
     *
     */
    public function generateGroupsForRound($usersByArea, $area, $round, $shuffle)
    {
        foreach ($usersByArea as $fightersByEntity) {
            // Chunking to make small round robin groups
            $fightersGroup = $this->chunkAndShuffle($round, $shuffle, $fightersByEntity);
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
            $order = 1;
            foreach ($fightersGroup as $value => $fighters) {
                $fighters = $fighters->pluck('id');
                if ($shuffle) {
                    $fighters = $fighters->shuffle();
                }
                $group = $this->saveGroup($area, $order, $round, $parent = null);
                $this->syncGroup($group, $fighters);
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
                $order++;
            }
            $area++;
        }
    }

    /**
     * @param $area
     * @param $order
     * @param $round
     * @param $parent
     * @return FightersGroup
     */
    protected function saveGroup($area, $order, $round, $parent): FightersGroup
    {
        $group = new FightersGroup();
        $group->area = $area;
        $group->order = $order;
        $group->round = $round;
        $group->championship_id = $this->championship->id;
        if ($parent != null) {
            $group->parent_id = $parent->id;
        }
        $group->save();
        return $group;
    }


    /**
     * @param integer $groupSize
     * @return Collection
     */
    public function createByeGroup($groupSize): Collection

    {
        $byeFighter = $this->createByeFighter();
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
        $group = new Collection();
        for ($i = 0; $i < $groupSize; $i++) {
            $group->push($byeFighter);
        }
        return $group;
    }

    /**
     * @param $fighters
     * @param Collection $fighterGroups
     * @return Collection
     */
    public function adjustFightersGroupWithByes($fighters, $fighterGroups): Collection
    {
        $tmpFighterGroups = clone $fighterGroups;
        $byeGroup = $this->getByeGroup($this->championship, $fighters);
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}

        // Get biggest competitor's group
        $max = $this->getMaxFightersByEntity($tmpFighterGroups);

        // We reacommodate them so that we can mix them up and they don't fight with another competitor of his entity.

        $fighters = $this->repart($fighterGroups, $max);
        $fighters = $this->insertByes($fighters, $byeGroup);

        return $fighters;
    }

    /**
     * Get All Groups on previous round
     * @param $currentRound
     * @return Collection
     */
    private function getPreviousRound($currentRound)
    {
        $previousRound = $this->championship->groupsByRound($currentRound + 1)->get();
        return $previousRound;
    }

    /**
     * Get the next group on the right ( parent ), final round being the ancestor
     * @param $matchNumber
     * @param Collection $previousRound
     * @return mixed
     */
    private function getParentGroup($matchNumber, $previousRound)
    {
        $parentIndex = intval(($matchNumber + 1) / 2);
        $parent = $previousRound->get($parentIndex - 1);
        return $parent;
    }

    /**
     * Save Groups with their parent info
     * @param integer $numRounds
     * @param $numFightersEliminatory
     */
    protected function pushGroups($numRounds, $numFightersEliminatory)
    {
        for ($roundNumber = 2; $roundNumber <= $numRounds; $roundNumber++) {
            // From last match to first match
            for ($matchNumber = 1; $matchNumber <= ($numFightersEliminatory / pow(2, $roundNumber)); $matchNumber++) {
                $fighters = $this->createByeGroup(2);
                $group = $this->saveGroup($area = 1, $order = $matchNumber, $roundNumber, $parent = null);
                $this->syncGroup($group, $fighters);
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
            }
        }
    }

    /**
     * Group Fighters by area
     * @return Collection
     * @throws TreeGenerationException
     */
    private function getFightersByArea()
    {
        // If previous trees already exists, delete all
        $this->championship->fightersGroups()->delete();
        $areas = $this->settings->fightingAreas;
        $fighters = $this->getFighters();



        if ($fighters->count() / $areas < ChampionshipSettings::MIN_COMPETITORS_BY_AREA) {
            throw new TreeGenerationException();
        }
        // Get Competitor's / Team list ordered by entities ( Federation, Assoc, Club, etc...)
        $fighterByEntity = $this->getFightersByEntity($fighters); // Chunk(1)
        $fightersWithBye = $this->adjustFightersGroupWithByes($fighters, $fighterByEntity);

        // Chunk user by areas
        return $fightersWithBye->chunk(count($fightersWithBye) / $areas);
    }

    /**
     * Attach a parent to every child for nestedSet Navigation
     */
    private function addParentToChildren($numFightersEliminatory)
    {
        $numRounds = intval(log($numFightersEliminatory, 2));

        $groupsDesc = $this->championship
            ->fightersGroups()
            ->where('round', '<', $numRounds)
            ->orderByDesc('id')->get();

        $groupsDescByRound = $groupsDesc->groupBy('round');

        foreach ($groupsDescByRound as $round => $groups) {
            $previousRound = $this->getPreviousRound($round, $numRounds);

            foreach ($groups->reverse()->values() as $matchNumber => $group) {
                $parent = $this->getParentGroup($matchNumber + 1, $previousRound);
                $group->parent_id = $parent->id;
                $group->save();
            }
        }
    }

    /**
     * Create Bye Groups to adjust tree
     * @param $byeCount
     * @return Collection
     */
    protected function createNullsGroup($byeCount): Collection

    {
        $byeFighter = $this->createByeFighter();
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
        $byeGroup = new Collection();
        for ($i = 0; $i < $byeCount; $i++) {
            $byeGroup->push($byeFighter);
        }
        return $byeGroup;
    }
}


Push — master ( 59b1f2...d98836 )

TreeGen B

Complexity

Size/Duplication

Coupling/Cohesion

Importance

17 Methods

How to fix Duplicated Code Complexity

Duplicated Code

Complex Class

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

xoco70 / laravel-tournaments

Push — master ( 59b1f2...d98836 )

TreeGen B

Complexity

Size/Duplication

Coupling/Cohesion

Importance

17 Methods

How to fix Duplicated Code Complexity

Duplicated Code

Complex Class

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

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