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<?php |
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namespace Ttskch; |
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class AccessRestrictor |
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{ |
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/** |
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* @var array |
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*/ |
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private $publicCategories; |
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/** |
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* @var array |
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*/ |
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private $publicTags; |
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/** |
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* @var array |
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*/ |
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private $privateCategories; |
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/** |
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* @var array |
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*/ |
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private $privateTags; |
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public function __construct(array $publicCategories = [], array $publicTags = [], array $privateCategories = [], array $privateTags = []) |
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{ |
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$this->publicCategories = $publicCategories; |
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$this->publicTags = $publicTags; |
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$this->privateCategories = $privateCategories; |
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$this->privateTags = $privateTags; |
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} |
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/** |
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* @param string $category |
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* @param array $tags |
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* @return bool |
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*/ |
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public function isPublic($category, array $tags) |
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{ |
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if ($this->isWithheld($category, $tags)) { |
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return false; |
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} |
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return empty($this->publicCategories) || $this->isPublished($category, $tags); |
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} |
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/** |
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* @param string $category |
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* @param array $tags |
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* @return bool |
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*/ |
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public function isPublished($category, array $tags) |
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{ |
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return $this->categoryIsUnderOneOf($category, $this->publicCategories) || $this->atLeastOneTagIsIn($tags, $this->publicTags); |
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} |
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/** |
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* @param string $category |
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* @param array $tags |
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* @return bool |
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*/ |
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public function isWithheld($category, array $tags) |
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{ |
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return $this->categoryIsUnderOneOf($category, $this->privateCategories) || $this->atLeastOneTagIsIn($tags, $this->privateTags); |
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} |
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/** |
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* @param string $needle |
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* @param array $haystacks |
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* @return bool |
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*/ |
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public function categoryIsUnderOneOf($needle, array $haystacks) |
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{ |
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foreach ($haystacks as $haystack) { |
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if (preg_match(sprintf('#^%s#', $haystack), $needle)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* @param array $needles |
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* @param array $haystacks |
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* @return bool |
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*/ |
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public function atLeastOneTagIsIn(array $needles, array $haystacks) |
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{ |
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foreach ($haystacks as $haystack) { |
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foreach ($needles as $needle) { |
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if ($needle === $haystack) { |
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return true; |
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} |
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} |
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} |
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return false; |
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} |
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} |
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