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<?php |
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namespace BillingBoss; |
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use BillingBoss\Interpreter\FlatRateBillInterpreter; |
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use BillingBoss\Interpreter\PercentageBillInterpreter; |
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use BillingBoss\Interpreter\CappedBillInterpreter; |
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use BillingBoss\Interpreter\ProgressiveBillInterpreter; |
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use BillingBoss\Interpreter\SteppedBillInterpreter; |
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/** |
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* A billing interpreter aggregator |
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* |
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* @package BillingBoss |
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* @link https://github.com/ranskills/billing-boss-php |
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* @copyright Copyright (c) 2018 Ransford Ako Okpoti |
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* @license Refer to the LICENSE distributed with this library |
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* @since 1.0.0 |
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*/ |
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final class BillingBoss |
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{ |
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/** |
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* @var BillInterpreter[] |
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*/ |
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private static $interpreters = []; |
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public static function getInterpreters() |
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{ |
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if (!empty(self::$interpreters)) { |
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return self::$interpreters; |
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} |
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self::addInterpreter(new CappedBillInterpreter()); |
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self::addInterpreter(new FlatRateBillInterpreter()); |
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self::addInterpreter(new PercentageBillInterpreter()); |
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self::addInterpreter(new ProgressiveBillInterpreter()); |
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self::addInterpreter(new SteppedBillInterpreter()); |
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return self::$interpreters; |
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} |
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public static function addInterpreter(BillInterpreter $interpreter) |
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{ |
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self::$interpreters[get_class($interpreter)] = $interpreter; |
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} |
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public static function removeInterpreter(BillInterpreter $interpreter) |
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{ |
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$key = get_class($interpreter); |
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if (isset(self::$interpreters[$key])) { |
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unset(self::$interpreters[$key]); |
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} |
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} |
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/** |
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* @param BillContext $context |
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* @return float |
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* @throws Exception\Exception |
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*/ |
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public static function bill(BillContext $context): float |
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{ |
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$interpreters = self::getInterpreters(); |
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foreach ($interpreters as $interpreter) { |
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if ($interpreter->isValid($context)) { |
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return $interpreter->interpret($context); |
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} |
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} |
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return 0.0; |
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} |
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} |
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ranskills /
billing-boss-php
