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<?php |
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namespace BristolSU\ControlDB\Export\Handler; |
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use BristolSU\ControlDB\Export\FormattedItem; |
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use BristolSU\ControlDB\Export\Formatter\Formatter; |
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use Illuminate\Support\Collection; |
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abstract class Handler |
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{ |
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/** |
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* @var array |
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*/ |
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private $config; |
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public function __construct(array $config) |
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{ |
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$this->config = $config; |
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} |
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/** |
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* Prepare items by transforming them to formattable items |
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* |
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* @param $items |
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* @return FormattedItem[] |
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*/ |
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protected function prepareItems($items) |
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{ |
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$formattedItems = []; |
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foreach($items as $item) { |
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$formattedItems[] = FormattedItem::create($item); |
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} |
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return $formattedItems; |
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} |
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public function export($items = []) |
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{ |
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if($items instanceof Collection) { |
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$items = $items->all(); |
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} |
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$formattedItems = $this->prepareItems($items); |
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foreach($this->getFormatters() as $formatter) { |
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$formattedItems = $formatter->format($formattedItems); |
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} |
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$this->save($formattedItems); |
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} |
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/** |
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* @return Formatter[] |
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*/ |
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protected function getFormatters() |
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{ |
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return array_map(function($className) { |
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if(class_exists($className)) { |
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return new $className($this->config('formatters')[$className]); |
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} |
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throw new \Exception(sprintf('Formatter %s does not exist', $className)); |
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}, array_keys($this->config('formatters', []))); |
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} |
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/** |
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* @param FormattedItem[] $items |
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* @return mixed |
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*/ |
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abstract protected function save(array $items); |
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/** |
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* @param string $key |
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* @param null $default |
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* |
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* @return mixed|null |
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*/ |
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protected function config(string $key, $default = null) |
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{ |
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if(array_key_exists($key, $this->config)) { |
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return $this->config[$key]; |
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} |
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return $default; |
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} |
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} |
bristol-su /
control
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