71 lines
1.4 KiB
Ruby
71 lines
1.4 KiB
Ruby
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class RecipeProxy
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attr_reader :recipe
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def initialize(recipe)
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@recipe = recipe
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parse_yields
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end
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def name
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@recipe.name
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end
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def density
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@density
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end
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def density?
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!self.density.nil?
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end
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def get_custom_unit_equivalent(custom_unit_name)
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unit = @custom_yields.detect { |vu| vu.unit.unit == custom_unit_name }
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known_unit = @unit_yields.first
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if unit && known_unit
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# ex:
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# custom_unit_name: "rolls"
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# yields: "3 rolls, 500 g"
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# desired return: 166.6 g
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ValueUnit.for(known_unit.value.value / unit.value.value, known_unit.unit)
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end
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end
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private
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def parse_yields
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@custom_yields = []
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@unit_yields = []
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@density = nil
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@recipe.yields_list.each do |y|
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begin
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vu = UnitConversion::parse(yield_string)
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rescue UnparseableUnitError
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vu = nil
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end
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if vu
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if vu.unit.nil?
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@custom_yields << ValueUnit.for(vu.value, 'servings')
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elsif vu.mass? || vu.volume?
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@unit_yields << vu
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else
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@custom_yields << vu
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end
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end
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end
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vol = @unit_yields.detect { |u| u.volume? }
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mas = @unit_yields.detect { |u| u.mass? }
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# ex
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# vol: 2 cups
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# mas: 7 oz
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if vol && mas
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@density = "#{mas.value.value / vol.value.value} #{mas.unit.original_unit}/#{vol.unit.original_unit}"
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end
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end
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end
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