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<?php |
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namespace WebTheory\Saveyour; |
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use Respect\Validation\Validatable; |
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use WebTheory\Saveyour\Contracts\InputPurifierInterface; |
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class InputPurifier implements InputPurifierInterface |
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{ |
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/** |
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* Validation rules |
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* |
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* @var Validatable[] |
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*/ |
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protected $rules = []; |
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/** |
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* Callback function(s) to sanitize incoming data |
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* |
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* @var array |
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*/ |
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protected $filters = []; |
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/** |
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* Alerts to display upon validation failure |
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* |
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* @var array |
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*/ |
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protected $alerts = []; |
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/** |
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* @var array |
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*/ |
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protected $violations = []; |
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/** |
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* Get callback function(s) to sanitize incoming data before saving to database |
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* |
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* @return array |
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*/ |
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public function getFilters(): array |
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{ |
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return $this->filters; |
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} |
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/** |
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* Set callback function(s) to sanitize incoming data before saving to database |
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* |
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* @param array $filters Callback function(s) to sanitize incoming data before saving to database |
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* |
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* @return self |
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*/ |
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public function setFilters(callable ...$filters) |
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{ |
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$this->filters = $filters; |
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return $this; |
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} |
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/** |
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* Set callback function(s) to sanitize incoming data before saving to database |
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* |
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* @param callable $filters Callback function(s) to sanitize incoming data before saving to database |
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* |
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* @return self |
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*/ |
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public function addFilter(callable $filter) |
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{ |
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$this->filters[] = $filter; |
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return $this; |
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} |
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/** |
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* Get validation |
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* |
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* @return string |
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*/ |
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public function getRules(): array |
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{ |
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return $this->rules; |
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} |
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/** |
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* |
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*/ |
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public function getRule(string $rule): Validatable |
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{ |
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return $this->rules[$rule]; |
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} |
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/** |
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* Add validation rules |
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* |
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* @param array $rules Array of Validatable instances |
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* |
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* @return self |
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*/ |
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public function setRules(array $rules) |
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{ |
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$this->rules = []; |
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foreach ($rules as $rule => $validator) { |
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if (is_array($validator)) { |
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$alert = $validator['alert'] ?? null; |
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$validator = $validator['validator']; |
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} |
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$this->addRule($rule, $validator, $alert ?? null); |
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} |
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return $this; |
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} |
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/** |
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* Add validation rule |
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* |
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* @param string $rule Name of the the rule being checked |
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* @param Validatable $validator Validatable instance |
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* @param string $alert Message to be displayed if validation fails |
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* |
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* @return self |
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*/ |
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public function addRule(string $rule, Validatable $validator, ?string $alert = null) |
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{ |
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$this->rules[$rule] = $validator; |
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if ($alert) { |
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$this->addAlert($rule, $alert); |
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} |
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return $this; |
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} |
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/** |
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* Get validation_messages |
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* |
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* @return string |
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*/ |
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public function getAlerts(): array |
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{ |
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return $this->alerts; |
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} |
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/** |
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* |
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*/ |
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public function getAlert(string $alert) |
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{ |
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return $this->alerts[$alert]; |
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} |
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/** |
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* Set validation messages |
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* |
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* @param string $alerts validation_messages |
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* |
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* @return self |
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*/ |
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public function setAlerts(array $alerts) |
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{ |
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foreach ($alerts as $rule => $alert) { |
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$this->addAlert($rule, $alert); |
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} |
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return $this; |
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} |
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/** |
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* Set validation_messages |
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* |
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* @param string $alerts validation_messages |
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* |
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* @return self |
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*/ |
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public function addAlert(string $rule, string $alert) |
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{ |
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$this->alerts[$rule] = $alert; |
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return $this; |
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} |
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/** |
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* |
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*/ |
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public function filterInput($input) |
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{ |
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if (true === $this->validateInput($input)) { |
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return $this->returnIfPassed($this->sanitizeInput($input)); |
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} |
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return $this->returnIfFailed(); |
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} |
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/** |
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* |
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*/ |
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protected function validateInput($input) |
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{ |
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$input = (array) $input; |
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/** @var Validatable $validator */ |
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foreach ($this->rules as $rule => $validator) { |
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foreach ($input as $value) { |
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if (true !== $validator->validate($value)) { |
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$this->handleRuleViolation($rule); |
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return false; |
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} |
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} |
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} |
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return true; |
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} |
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/** |
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* |
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*/ |
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protected function sanitizeInput($input) |
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{ |
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$array = is_array($input); // check whether original input is an array |
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$input = (array) $input; // cast input to array for simplicity |
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foreach ($this->filters as $filter) { |
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foreach ($input as &$value) { |
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$value = $filter($value); |
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} |
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unset($value); |
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} |
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return $array ? $input : $input[0]; // return single item if original input was not an array |
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} |
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/** |
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* |
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*/ |
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protected function returnIfPassed($input) |
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{ |
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return $input; |
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} |
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/** |
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* |
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*/ |
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protected function returnIfFailed() |
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{ |
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return false; |
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} |
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/** |
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* |
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*/ |
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protected function handleRuleViolation($rule) |
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{ |
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$this->violations[$rule] = $this->alerts[$rule] ?? ''; |
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} |
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/** |
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* Get the value of violations |
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* |
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* @return array |
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*/ |
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public function getViolations(): array |
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{ |
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return $this->violations; |
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} |
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/** |
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* |
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*/ |
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public function clearViolations() |
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{ |
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$this->violations = []; |
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} |
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} |
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