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<?php |
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namespace Thinktomorrow\Vine\Branch; |
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use Thinktomorrow\Vine\VineException; |
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/** |
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* Class BranchCollection |
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* |
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* @property array $branches |
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*/ |
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class BranchCollection extends ArrayCollection |
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{ |
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public function __construct(array $branches = []) |
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{ |
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self::validateBranches($branches); |
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$this->branches = $branches; |
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} |
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public function hasBranches() |
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{ |
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return (!empty($this->branches) && count($this->branches) > 0); |
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} |
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public function push(Branch $branch) |
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{ |
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$this->branches[] = $branch; |
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return $this; |
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} |
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public function __get($key) |
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{ |
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if(isset($this->$key)) return $this->$key; |
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throw VineException::unknownBranchCollectionAttribute($key); |
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} |
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public static function validateBranches($branches) |
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{ |
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foreach($branches as $branch) |
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{ |
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if(!$branch instanceof Branch) |
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{ |
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throw VineException::requiredAsBranch($branch); |
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} |
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} |
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} |
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public function flatten() |
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{ |
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$flatten = array_reduce($this->branches,function($carry,$branch){ |
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return array_merge($carry,$this->flattenRecursive($branch,0)); |
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},[]); |
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return new static($flatten); |
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} |
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protected function flattenRecursive(Branch $branch, $level = 0) |
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{ |
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$children = $branch->branches; |
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// Remove the children reference |
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$output = [new Branch($branch->key,$branch->value,$branch->label)]; |
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foreach($children as $child) $output = array_merge($output,$this->flattenRecursive($child,$level+1)); |
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return $output; |
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} |
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} |
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thinktomorrow /
vine
