51 lines
1.2 KiB
Ruby
51 lines
1.2 KiB
Ruby
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class NutritionData
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attr_reader :protein, :lipids, :carbohydrates, :kcal, :fiber, :sugar, :errors
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def initialize(recipe_ingredients)
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@errors = []
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@protein = 0.0
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@lipids = 0.0
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@kcal = 0.0
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@fiber = 0.0
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@sugar = 0.0
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@carbohydrates = 0.0
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valid_ingredients = []
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recipe_ingredients.each do |i|
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if i.ingredient_id.nil?
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@errors << "#{i.name} has no nutrition data"
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elsif !i.can_convert_to_grams?
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@errors << "#{i.name} can't be converted to grams"
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else
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valid_ingredients << i
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end
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end
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keys = [:protein, :lipids, :kcal, :fiber, :sugar, :carbohydrates]
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valid_ingredients.each do |i|
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grams = i.to_grams
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keys.each do |k|
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value = i.ingredient.send(k)
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if value.present?
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value = value.to_f
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running_total = self.instance_variable_get("@#{k}".to_sym)
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delta = (grams / 100.0) * value
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self.instance_variable_set("@#{k}".to_sym, running_total + delta)
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else
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@errors << "#{i.name} missing #{k} data"
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end
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end
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end
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keys.each do |k|
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v = self.instance_variable_get("@#{k}".to_sym)
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self.instance_variable_set("@#{k}".to_sym, v.round(2))
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end
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end
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end
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