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<?php namespace Simondubois\UnsplashDownloader; |
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use InvalidArgumentException; |
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class Validate { |
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// |
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// Constants |
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/** |
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* Error codes |
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*/ |
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const ERROR_DESTINATION_NOTDIR = 1; |
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const ERROR_DESTINATION_UNWRITABLE = 2; |
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const ERROR_QUANTITY_NOTNUMERIC = 3; |
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const ERROR_QUANTITY_NOTPOSITIVE = 4; |
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const ERROR_QUANTITY_TOOHIGH = 5; |
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const ERROR_HISTORY_NOTFILE = 6; |
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const ERROR_HISTORY_NOTRW = 7; |
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// |
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// Quantity |
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// |
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/** |
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* Check validity of a quantity |
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* @param string $value Value to validate |
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* @return int Validated value |
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*/ |
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public function quantity($value) |
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{ |
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$value = $this->quantityFormat($value); |
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$this->quantityBoudaries($value); |
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return $value; |
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} |
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/** |
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* Format the quantity to integer |
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* @param string $value Parameter value |
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* @return int Formatted quantity value |
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*/ |
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private function quantityFormat($value) |
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{ |
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if (is_numeric($value) === false) { |
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throw new InvalidArgumentException( |
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'The given quantity ('.$value.') is not numeric.', |
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self::ERROR_QUANTITY_NOTNUMERIC |
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); |
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} |
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return intval($value); |
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} |
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/** |
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* Check the quantity value |
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* @param int $value Formatted quantity value |
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*/ |
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private function quantityBoudaries($value) |
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{ |
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if ($value < 0) { |
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throw new InvalidArgumentException( |
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'The given quantity ('.$value.') is not positive.', |
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self::ERROR_QUANTITY_NOTPOSITIVE |
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); |
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} |
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if ($value > 100) { |
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throw new InvalidArgumentException( |
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'The given quantity ('.$value.') is too high (should not be greater than 100).', |
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self::ERROR_QUANTITY_TOOHIGH |
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); |
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} |
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} |
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// |
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// History |
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// |
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/** |
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* Check validity of the history parameter |
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* @param string $value Parameter value |
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* @return null|string Validated and formatted history value |
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*/ |
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public function history($value) |
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{ |
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if (is_null($value)) { |
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return null; |
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} |
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$this->historyValidationType($value); |
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$this->historyValidationAccess($value); |
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return $value; |
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} |
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/** |
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* Check if history is not a dir |
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* @param string $value Parameter value |
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*/ |
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private function historyValidationType($value) |
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{ |
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if (is_dir($value) === true) { |
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throw new InvalidArgumentException( |
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'The given history path ('.$value.') is not a file.', |
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self::ERROR_HISTORY_NOTFILE |
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); |
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} |
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} |
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/** |
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* Check if history is accessible |
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* @param string $value Parameter value |
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*/ |
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private function historyValidationAccess($value) |
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{ |
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$handle = @fopen($value, 'a+'); |
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if ($handle === false) { |
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throw new InvalidArgumentException( |
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'The given history path ('.$value.') can not be created or opened for read & write.', |
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self::ERROR_HISTORY_NOTRW |
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); |
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} |
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fclose($handle); |
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} |
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// |
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// Destination |
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// |
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/** |
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* Check validity of the destination parameter |
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* @param string $value Parameter value |
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* @return string Validated and formatted destination value |
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*/ |
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public function destination($value) |
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{ |
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if (is_dir($value) === false) { |
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throw new InvalidArgumentException( |
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'The given destination path ('.$value.') is not a directory.', |
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self::ERROR_DESTINATION_NOTDIR |
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); |
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} |
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if (is_writable($value) === false) { |
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throw new InvalidArgumentException( |
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'The given destination path ('.$value.') is not writable.', |
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self::ERROR_DESTINATION_UNWRITABLE |
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1 |
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); |
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} |
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1 |
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return $value; |
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} |
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/** |
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* Check validity of the category parameter |
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* @param string|null $value Parameter value |
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* @return int|null Validated and formatted category value |
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*/ |
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public function category($value) |
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{ |
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1 |
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if (is_null($value)) { |
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return null; |
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} |
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1 |
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return intval($value); |
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} |
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} |
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simondubois /
unsplash-downloader
