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<?php namespace Darryldecode\Cart; |
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use Darryldecode\Cart\Exceptions\InvalidConditionException; |
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use Darryldecode\Cart\Helpers\Helpers; |
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use Darryldecode\Cart\Validators\CartConditionValidator; |
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/** |
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* Created by PhpStorm. |
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* User: darryl |
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* Date: 1/15/2015 |
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* Time: 9:02 PM |
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*/ |
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class CartCondition { |
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/** |
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* @var array |
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*/ |
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private $args; |
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/** |
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* the parsed raw value of the condition |
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* |
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* @var |
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*/ |
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public $parsedRawValue; |
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/** |
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* @param array $args (name, type, target, value) |
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* @throws InvalidConditionException |
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*/ |
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public function __construct(array $args) |
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{ |
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$this->args = $args; |
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if( Helpers::isMultiArray($args) ) |
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{ |
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Throw new InvalidConditionException('Multi dimensional array is not supported.'); |
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} |
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else |
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{ |
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$this->validate($this->args); |
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} |
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} |
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/** |
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* the target of where the condition is applied. |
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* NOTE: On conditions added to per item bases, target is not needed. |
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* |
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* @return mixed |
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*/ |
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public function getTarget() |
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{ |
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return (isset($this->args['target'])) ? $this->args['target'] : ''; |
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} |
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/** |
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* the name of the condition |
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* |
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* @return mixed |
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*/ |
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public function getName() |
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{ |
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return $this->args['name']; |
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} |
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/** |
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* the type of the condition |
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* |
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* @return mixed |
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*/ |
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public function getType() |
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{ |
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return $this->args['type']; |
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} |
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/** |
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* get the additional attributes of a condition |
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* |
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* @return array |
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*/ |
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public function getAttributes() |
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{ |
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return (isset($this->args['attributes'])) ? $this->args['attributes'] : array(); |
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} |
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/** |
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* the value of this the condition |
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* |
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* @return mixed |
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*/ |
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public function getValue() |
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{ |
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return $this->args['value']; |
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} |
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/** |
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* Set the order to apply this condition. If no argument order is applied we return 0 as |
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* indicator that no assignment has been made |
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* @param int $order |
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* @return Integer |
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*/ |
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public function setOrder($order = 1) |
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{ |
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$this->args['order'] = $order; |
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} |
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/** |
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* the order to apply this condition. If no argument order is applied we return 0 as |
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* indicator that no assignment has been made |
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* |
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* @return Integer |
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*/ |
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public function getOrder() |
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{ |
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return isset($this->args['order']) && is_numeric($this->args['order']) ? (int)$this->args['order'] : 0; |
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} |
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/** |
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* apply condition to total or subtotal |
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* |
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* @param $totalOrSubTotalOrPrice |
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* @return float |
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*/ |
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public function applyCondition($totalOrSubTotalOrPrice) |
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{ |
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return $this->apply($totalOrSubTotalOrPrice, $this->getValue()); |
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} |
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/** |
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* get the calculated value of this condition supplied by the subtotal|price |
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* |
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* @param $totalOrSubTotalOrPrice |
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* @return mixed |
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*/ |
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public function getCalculatedValue($totalOrSubTotalOrPrice) |
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{ |
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$this->apply($totalOrSubTotalOrPrice, $this->getValue()); |
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return $this->parsedRawValue; |
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} |
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/** |
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* apply condition |
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* |
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* @param $totalOrSubTotalOrPrice |
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* @param $conditionValue |
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* @return float |
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*/ |
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protected function apply($totalOrSubTotalOrPrice, $conditionValue) |
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{ |
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// if value has a percentage sign on it, we will get first |
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// its percentage then we will evaluate again if the value |
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// has a minus or plus sign so we can decide what to do with the |
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// percentage, whether to add or subtract it to the total/subtotal/price |
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// if we can't find any plus/minus sign, we will assume it as plus sign |
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if( $this->valueIsPercentage($conditionValue) ) |
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{ |
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if( $this->valueIsToBeSubtracted($conditionValue) ) |
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{ |
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$value = Helpers::normalizePrice( $this->cleanValue($conditionValue) ); |
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$this->parsedRawValue = $totalOrSubTotalOrPrice * ($value / 100); |
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$result = floatval($totalOrSubTotalOrPrice - $this->parsedRawValue); |
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} |
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else if ( $this->valueIsToBeAdded($conditionValue) ) |
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{ |
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$value = Helpers::normalizePrice( $this->cleanValue($conditionValue) ); |
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$this->parsedRawValue = $totalOrSubTotalOrPrice * ($value / 100); |
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$result = floatval($totalOrSubTotalOrPrice + $this->parsedRawValue); |
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} |
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else |
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{ |
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$value = Helpers::normalizePrice($conditionValue); |
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$this->parsedRawValue = $totalOrSubTotalOrPrice * ($value / 100); |
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$result = floatval($totalOrSubTotalOrPrice + $this->parsedRawValue); |
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} |
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} |
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// if the value has no percent sign on it, the operation will not be a percentage |
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// next is we will check if it has a minus/plus sign so then we can just deduct it to total/subtotal/price |
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else |
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{ |
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if( $this->valueIsToBeSubtracted($conditionValue) ) |
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{ |
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$this->parsedRawValue = Helpers::normalizePrice( $this->cleanValue($conditionValue) ); |
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$result = floatval($totalOrSubTotalOrPrice - $this->parsedRawValue); |
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} |
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else if ( $this->valueIsToBeAdded($conditionValue) ) |
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{ |
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$this->parsedRawValue = Helpers::normalizePrice( $this->cleanValue($conditionValue) ); |
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$result = floatval($totalOrSubTotalOrPrice + $this->parsedRawValue); |
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} |
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else |
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{ |
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$this->parsedRawValue = Helpers::normalizePrice($conditionValue); |
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$result = floatval($totalOrSubTotalOrPrice + $this->parsedRawValue); |
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} |
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} |
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// Do not allow items with negative prices. |
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return $result < 0 ? 0.00 : $result; |
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} |
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/** |
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* check if value is a percentage |
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* |
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* @param $value |
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* @return bool |
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*/ |
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protected function valueIsPercentage($value) |
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{ |
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return (preg_match('/%/', $value) == 1); |
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} |
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/** |
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* check if value is a subtract |
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* |
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* @param $value |
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* @return bool |
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*/ |
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protected function valueIsToBeSubtracted($value) |
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{ |
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return (preg_match('/\-/', $value) == 1); |
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} |
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/** |
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* check if value is to be added |
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* |
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* @param $value |
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* @return bool |
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*/ |
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protected function valueIsToBeAdded($value) |
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{ |
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return (preg_match('/\+/', $value) == 1); |
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} |
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/** |
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* removes some arithmetic signs (%,+,-) only |
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* |
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* @param $value |
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* @return mixed |
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*/ |
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protected function cleanValue($value) |
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{ |
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return str_replace(array('%','-','+'),'',$value); |
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} |
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/** |
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* validates condition arguments |
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* |
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* @param $args |
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* @throws InvalidConditionException |
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*/ |
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View Code Duplication |
protected function validate($args) |
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{ |
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$rules = array( |
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'name' => 'required', |
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'type' => 'required', |
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'value' => 'required', |
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); |
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$validator = CartConditionValidator::make($args, $rules); |
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if( $validator->fails() ) |
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{ |
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throw new InvalidConditionException($validator->messages()->first()); |
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} |
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} |
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} |
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