mirror of
https://github.com/openfoodfoundation/openfoodnetwork
synced 2026-01-29 21:17:17 +00:00
47 lines
1.1 KiB
Ruby
47 lines
1.1 KiB
Ruby
# frozen_string_literal: false
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require_dependency 'spree/calculator'
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require 'spree/localized_number'
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module Calculator
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class FlexiRate < Spree::Calculator
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extend Spree::LocalizedNumber
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preference :first_item, :decimal, default: 0.0
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preference :additional_item, :decimal, default: 0.0
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preference :max_items, :integer, default: 0
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preference :currency, :string, default: Spree::Config[:currency]
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localize_number :preferred_first_item,
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:preferred_additional_item
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def self.description
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I18n.t(:flexible_rate)
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end
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def self.available?(_object)
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true
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end
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def compute(object)
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max = preferred_max_items.to_i
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items_count = line_items_for(object).map(&:quantity).sum
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# check max value to avoid divide by 0 errors
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return 0 if max.zero?
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if items_count > max
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compute_for(max - 1)
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elsif items_count <= max
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compute_for(items_count - 1)
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end
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end
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private
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def compute_for(count)
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count * preferred_additional_item.to_f + preferred_first_item.to_f
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end
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end
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end
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