Behavioral\Observer\FootballSubject

Complexity

Total Complexity

8

Size/Duplication

Total Lines	66
Duplicated Lines	0 %

Importance

Changes	7
Bugs	0	Features	0

5 Methods

Rating	Name	Duplication	Size	Complexity
A	detachObserver()	0	7	2
A	__construct()	0	3	1
A	getSubjectName()	0	3	1
A	notifyObservers()	0	8	2
A	attachObserver()	0	7	2

<?php

declare(strict_types=1);

/**
 * @author  : Jagepard <jagepard@yandex.ru>
 * @license https://mit-license.org/ MIT
 */

namespace Behavioral\Observer;

class FootballSubject implements SubjectInterface
{
    /**
     * @var string
     */
    private $subjectName;
    /**
     * @var array
     */
    private $observers = [];

    /**
     * FootballSubject constructor.
     * @param  string  $subjectName
     */
    public function __construct(string $subjectName)
    {
        $this->subjectName = $subjectName;
    }

    /**
     * @param  ObserverInterface  $observer
     * @throws \Exception
     */
    public function attachObserver(ObserverInterface $observer): void
    {
        if (array_key_exists($observer->getObserverName(), $this->observers)) {
            throw new \InvalidArgumentException('Observer is already exist');
        }

        $this->observers[$observer->getObserverName()] = $observer;
    }

    /**
     * @param  string  $subjectName
     */
    public function detachObserver(string $subjectName): void
    {
        if (!array_key_exists($subjectName, $this->observers)) {
            throw new \InvalidArgumentException('Observer is not exist');
        }

        unset($this->observers[$subjectName]);
    }

    /**
     * @param  EventInterface  $event
     */
    public function notifyObservers(EventInterface $event): void
    {
        foreach ($this->observers as $observer) {
            printf(
                "%s has get information about: %s %s \n",
                $observer->getObserverName(),
                $this->subjectName,
                $event->getEventName()
            );
        }
    }

    /**
     * @return string
     */
    public function getSubjectName(): string
    {
        return $this->subjectName;
    }
}