Class: Calculator::AdvancedFlatPercent

Inherits:
Calculator
  • Object
show all
Defined in:
app/models/calculator/advanced_flat_percent.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.description ⇒ Object 



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# File 'app/models/calculator/advanced_flat_percent.rb', line 5

def self.description
  I18n.t("advanced_flat_percent")
end

.register ⇒ Object 



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# File 'app/models/calculator/advanced_flat_percent.rb', line 9

def self.register
  super
  UserGroup.register_calculator(self)
end

Instance Method Details

#compute(object) ⇒ Object 



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# File 'app/models/calculator/advanced_flat_percent.rb', line 14

def compute(object)
  return unless object.present? and object.line_items.present? and object.user.present?

  part = self.preferred_flat_percent.abs / 100.0
  item_total = object.line_items.map(&:amount).sum
  
  if self.preferred_based_on_cost_price
    item_cost_price_total = object.line_items.map do |li|
      if !li.variant.cost_price.nil? && li.variant.cost_price > 0
        li.variant.cost_price * li.quantity
      else
        li.amount
      end
    end.sum
    (item_cost_price_total * (1 + part) - item_total).round(2)
  else
    (item_total * (-part)).round(2)
  end
end

#compute_item(variant) ⇒ Object 



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# File 'app/models/calculator/advanced_flat_percent.rb', line 34

def compute_item(variant)
  part = self.preferred_flat_percent.abs / 100.0
  
  if self.preferred_based_on_cost_price
    if !variant.cost_price.nil? && variant.cost_price > 0
      variant.cost_price * (1 + part)
    else
      variant.price
    end
  else
    variant.price * (1 - part)
  end
end