75 lines
1.7 KiB
Ruby
75 lines
1.7 KiB
Ruby
class NutritionData
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NUTRIENTS = {
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protein: 'g Protein',
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lipids: 'g Fat',
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kcal: 'Calories',
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fiber: 'g Fiber',
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sugar: 'g Sugar',
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carbohydrates: 'g Carbohydrates',
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calcium: nil,
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iron: nil,
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magnesium: nil,
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phosphorus: nil,
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potassium: nil,
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sodium: 'mg Sodium',
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zinc: nil,
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copper: nil,
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manganese: nil,
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vit_c: nil,
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vit_b6: nil,
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vit_b12: nil,
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vit_a: nil,
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vit_e: nil,
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vit_d: nil,
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vit_k: 'µg Vitamin K',
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cholesterol: nil
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}
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attr_reader :errors
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attr_reader *NUTRIENTS.keys
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def initialize(recipe_ingredients)
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@errors = []
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NUTRIENTS.keys.each do |n|
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self.instance_variable_set("@#{n}".to_sym, 0.0)
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end
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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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valid_ingredients.each do |i|
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grams = i.to_grams
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missing = []
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NUTRIENTS.each do |k, n|
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value = i.food.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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missing << k
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end
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end
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missing = missing.map { |k| NUTRIENTS[k] }.compact
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unless missing.empty?
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@errors << "#{i.name} missing the following nutrients: #{missing.join(', ')}"
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end
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end
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end
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end |