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<?php |
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declare(strict_types = 1); |
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namespace Hop\Validator; |
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use Hop\Validator\Message\MessageInterface; |
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use Hop\Validator\Message\FieldMessage; |
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use Hop\Validator\Message\MessagesContainer; |
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use Hop\Validator\Strategy\Field; |
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use Hop\Validator\Strategy\FieldInterface; |
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use Hop\Validator\Strategy\Strategy; |
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use Hop\Validator\Strategy\StructureField; |
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use Hop\Validator\Validator\RuleValidator; |
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/** |
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* Class StdValidator |
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* @package Application\Service\Validator |
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*/ |
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class StdValidator implements Validator |
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{ |
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/** |
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* @var RuleValidator[] |
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*/ |
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private $validators = []; |
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/** |
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* @param string $validatorName |
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* @param RuleValidator $validator |
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*/ |
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public function registerRuleValidator(string $validatorName, RuleValidator $validator): void |
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{ |
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$this->validators[$validatorName] = $validator; |
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} |
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/** |
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* @param array $config |
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* @return StdValidator |
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*/ |
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public static function fromConfig(array $config): self |
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{ |
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$validator = new static; |
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foreach ($config as $validatorName => $validatorClassName) { |
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if (!\class_exists($validatorClassName)) { |
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throw new \InvalidArgumentException(sprintf('Validator class %s does not exist', $validatorClassName)); |
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} |
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$validator->registerRuleValidator($validatorName, new $validatorClassName); |
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} |
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return $validator; |
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} |
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/** |
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* @param array $data |
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* @param Strategy $strategy |
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* @return bool |
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* @throws \InvalidArgumentException |
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*/ |
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public function isValid(array $data, Strategy $strategy): bool |
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{ |
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return \count($this->getMessages($data, $strategy)) === 0; |
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} |
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/** |
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* @param array $data |
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* @param Strategy $strategy |
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* @return \Hop\Validator\Message\MessagesContainer |
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*/ |
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public function getMessages(array $data, Strategy $strategy): MessagesContainer |
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{ |
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$messages = new MessagesContainer(); |
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foreach ($strategy->getFields() as $field) { |
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if ($field->condition() !== null && !$field->condition()($data)) { |
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continue; |
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} |
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if ($this->detectEmpty($data, $field->fieldName())) { |
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if (!$field->required()) { |
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continue; |
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} |
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$messages->attachMessage($field->fieldName(), (new FieldMessage())->attachMessage('NotEmpty', 'Value cannot be empty')); |
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} |
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$messages->attachMessage( |
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$field->fieldName(), |
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$field->isArray() ? |
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$this->processArrayField($field, $data[$field->fieldName()]) : |
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$this->processSingleField(@$data[$field->fieldName()], $field) |
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); |
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} |
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return $messages; |
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} |
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/** |
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* @param string $name |
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* @return RuleValidator |
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* @throws \InvalidArgumentException |
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*/ |
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private function getRuleValidator(string $name): RuleValidator |
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{ |
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if (!isset($this->validators[$name])) { |
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throw new \InvalidArgumentException(sprintf('Validator %s not registered', $name)); |
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} |
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return $this->validators[$name]; |
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} |
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/** |
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* @param array $data |
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* @param string $fieldName |
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* @return bool |
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*/ |
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private function detectEmpty(array $data, string $fieldName): bool |
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{ |
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if (!array_key_exists($fieldName, $data)) { |
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return true; |
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} |
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if ($data[$fieldName] === null) { |
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return true; |
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} |
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if (\is_string($data[$fieldName]) && $data[$fieldName] === '') { |
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return true; |
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} |
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return false; |
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} |
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private function processSingleField($row, FieldInterface $field): MessageInterface |
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{ |
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// TODO introduce policies/strategies if required |
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// for now it might be overengineering |
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switch (true) { |
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case $field instanceof Field: |
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return $this->processField($field, $row); |
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case $field instanceof StructureField: |
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return $this->getMessages($row, $field->strategy()); |
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default: |
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throw new \DomainException('Unknown field type'); |
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} |
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} |
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private function processField(Field $field, $row): FieldMessage |
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{ |
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$messages = new FieldMessage(); |
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foreach ($field->validators() as $validatorName => $options) { |
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$ruleValidator = $this->getRuleValidator($validatorName); |
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if (!$ruleValidator->isValid($row, $options)) { |
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$messages->attachMessage($validatorName, $ruleValidator->getMessage($row, $options)); |
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} |
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} |
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return $messages; |
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} |
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private function processArrayField(FieldInterface $field, $data) : MessageInterface |
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{ |
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$messages = new MessagesContainer(); |
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if (!\is_array($data)) { |
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return (new FieldMessage())->attachMessage('NotArray', 'Value is not an array'); |
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} |
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foreach ($data as $index => $row) { |
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$messages->attachMessage((string)$index, $this->processSingleField($row, $field)); |
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} |
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return $messages; |
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} |
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} |
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chmielewskitomasz /
validator
