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<?php |
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namespace Yabacon\Paystack; |
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class Fee |
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{ |
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const DEFAULT_PERCENTAGE = 0.015; |
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const DEFAULT_ADDITIONAL_CHARGE = 10000; |
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const DEFAULT_THRESHOLD = 250000; |
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const DEFAULT_CAP = 200000; |
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public static $default_percentage = Fee::DEFAULT_PERCENTAGE; |
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public static $default_additional_charge = Fee::DEFAULT_ADDITIONAL_CHARGE; |
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public static $default_threshold = Fee::DEFAULT_THRESHOLD; |
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public static $default_cap = Fee::DEFAULT_CAP; |
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private $percentage; |
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private $additional_charge; |
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private $threshold; |
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private $cap; |
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private $chargeDivider; |
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private $crossover; |
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private $flatlinePlusCharge; |
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private $flatline; |
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public function __construct() |
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{ |
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$this->percentage = Fee::$default_percentage; |
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$this->additional_charge = Fee::$default_additional_charge; |
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$this->threshold = Fee::$default_threshold; |
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$this->cap = Fee::$default_cap; |
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$this->__setup(); |
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} |
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public function withPercentage($percentage) |
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{ |
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$this->percentage = $percentage; |
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$this->__setup(); |
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} |
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public static function resetDefaults() |
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{ |
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Fee::$default_percentage = Fee::DEFAULT_PERCENTAGE; |
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Fee::$default_additional_charge = Fee::DEFAULT_ADDITIONAL_CHARGE; |
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Fee::$default_threshold = Fee::DEFAULT_THRESHOLD; |
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Fee::$default_cap = Fee::DEFAULT_CAP; |
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} |
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public function withAdditionalCharge($additional_charge) |
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{ |
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$this->additional_charge = $additional_charge; |
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$this->__setup(); |
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} |
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public function withThreshold($threshold) |
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{ |
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$this->threshold = $threshold; |
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$this->__setup(); |
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} |
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public function withCap($cap) |
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{ |
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$this->cap = $cap; |
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$this->__setup(); |
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} |
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private function __setup() |
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{ |
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$this->chargeDivider = $this->__chargeDivider(); |
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$this->crossover = $this->__crossover(); |
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$this->flatlinePlusCharge = $this->__flatlinePlusCharge(); |
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$this->flatline = $this->__flatline(); |
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} |
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private function __chargeDivider() |
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{ |
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return 1 - $this->percentage; |
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} |
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private function __crossover() |
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{ |
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return ($this->threshold * $this->chargeDivider) - $this->additional_charge; |
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} |
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private function __flatlinePlusCharge() |
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{ |
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return ($this->cap - $this->additional_charge) / $this->percentage; |
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} |
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private function __flatline() |
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{ |
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return $this->flatlinePlusCharge - $this->cap; |
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} |
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public function addFor($amountinkobo) |
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{ |
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if ($amountinkobo > $this->flatline) { |
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return intval(ceil($amountinkobo + $this->cap)); |
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} elseif ($amountinkobo > $this->crossover) { |
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return intval(ceil(($amountinkobo + $this->additional_charge) / $this->chargeDivider)); |
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} else { |
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return intval(ceil($amountinkobo / $this->chargeDivider)); |
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} |
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} |
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public function calculateFor($amountinkobo) |
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{ |
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$fee = $this->percentage * $amountinkobo; |
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if ($amountinkobo >= $this->threshold) { |
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$fee += $this->additional_charge; |
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} |
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if ($fee > $this->cap) { |
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$fee = $this->cap; |
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} |
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return intval(ceil($fee)); |
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} |
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} |
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yabacon /
paystack-php
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