Should work fine

Sources/OpenFoodFactsSDK/Extensions/String+Cases.swift

@@ -1,12 +0,0 @@
-import Foundation
-
-extension String {
-	public func camelCaseToSnakeCase() -> String {
-		let pattern = "([a-z0-9])([A-Z])"
-		let regex = try! NSRegularExpression(pattern: pattern, options: [])
-		let range = NSRange(location: 0, length: self.count)
-		return regex.stringByReplacingMatches(
-			in: self, options: [], range: range, withTemplate: "$1_$2"
-		).lowercased()
-	}
-}

Sources/OpenFoodFactsSDK/Schemas/Nutriments.swift

@@ -1,52 +1,146 @@
 import Foundation
+import Units
 
 @dynamicMemberLookup
 public struct Nutriments: Codable, Sendable {
-	private var storage: [String: Double]
+	// We separate values (Doubles) and units (Strings) for efficient, thread-safe storage
+	private let values: [String: Double]
+	private let units: [String: String]
 
 	public init(from decoder: Decoder) throws {
 		let container = try decoder.container(keyedBy: AnyCodingKey.self)
-		var dict = [String: Double]()
+		var v = [String: Double]()
+		var u = [String: String]()
+
 		for key in container.allKeys {
-			if let val = try? container.decode(Double.self, forKey: key) {
+			let keyStr = key.stringValue
-				dict[key.stringValue] = val
+
-			} else if let valStr = try? container.decode(
+			// Try decoding as Double first (most common for _100g, _serving)
-				String.self, forKey: key), let val = Double(valStr)
+			if let doubleVal = try? container.decode(Double.self, forKey: key) {
+				v[keyStr] = doubleVal
+			}
+			// Try decoding as String (could be a unit OR a number in string format)
+			else if let stringVal = try? container.decode(
+				String.self, forKey: key)
 			{
-				dict[key.stringValue] = val
+				if let doubleFromStr = Double(stringVal) {
+					v[keyStr] = doubleFromStr
+				} else {
+					u[keyStr] = stringVal  // It's likely a unit like "kcal", "g", "kj"
 				}
 			}
-		self.storage = dict
+		}
+		self.values = v
+		self.units = u
 	}
 
 	public func encode(to encoder: Encoder) throws {
 		var container = encoder.container(keyedBy: AnyCodingKey.self)
-		for (key, value) in storage {
+		for (key, val) in values {
-			try container.encode(value, forKey: AnyCodingKey(stringValue: key))
+			try container.encode(val, forKey: AnyCodingKey(stringValue: key))
+		}
+		for (key, unit) in units {
+			try container.encode(unit, forKey: AnyCodingKey(stringValue: key))
 		}
 	}
 
-	/// Access any nutrient dynamically (e.g. `nutriments.energyKcal`)
+	/// Dynamic lookup: converts `nutriments.energyKcal` -> `Nutrient(name: "energy-kcal")`
-	public subscript(dynamicMember member: String) -> Double? {
+	public subscript(dynamicMember member: String) -> Nutrient {
-		// Convert camelCase "energyKcal" to snake_case "energy-kcal" or "energy_kcal" logic if needed
+		let kebabName = member.camelCaseToKebabCase()
-		// For V2, OFF often returns "energy-kcal_100g"
+		return Nutrient(name: kebabName, values: values, units: units)
-		let snake = member.camelCaseToSnakeCase()
+	}
-		return storage[snake] ?? storage["\(snake)_100g"]
-			?? storage["\(snake)_value"]
 }
 
-	// Specific standard getters
+// MARK: - Nutrient View
-	public var energyKcal: Double? { self.storage["energy-kcal_100g"] }
+public struct Nutrient: Sendable {
-	public var carbohydrates: Double? { self.storage["carbohydrates_100g"] }
+	public let name: String
-	public var fat: Double? { self.storage["fat_100g"] }
+	private let values: [String: Double]
-	public var proteins: Double? { self.storage["proteins_100g"] }
+	private let units: [String: String]
-	public var salt: Double? { self.storage["salt_100g"] }
+
+	internal init(
+		name: String, values: [String: Double], units: [String: String]
+	) {
+		self.name = name
+		self.values = values
+		self.units = units
 	}
 
-// Helper for String extension used above
+	// MARK: - Raw Properties (Mapped to V2 JSON keys)
-struct AnyCodingKey: CodingKey {
+	public var per100g: Double? { values["\(name)_100g"] }
+	public var perServing: Double? { values["\(name)_serving"] }
+	public var value: Double? { values["\(name)_value"] ?? values[name] }
+	public var unit: String? { units["\(name)_unit"] }
+
+	// Computed / Legacy
+	public var valueComputed: Double? { values["\(name)_value"] }
+
+	// Prepared
+	public var preparedPer100g: Double? { values["\(name)_prepared_100g"] }
+	public var preparedPerServing: Double? {
+		values["\(name)_prepared_serving"]
+	}
+	public var preparedValue: Double? {
+		values["\(name)_prepared_value"] ?? values["\(name)_prepared"]
+	}
+	public var preparedUnit: String? { units["\(name)_prepared_unit"] }
+	public var preparedValueComputed: Double? {
+		values["\(name)_prepared_value"]
+	}
+
+	// MARK: - UnitValue Helpers (Restored)
+
+	public var per100gUnitValue: UnitValue<Double>? {
+		guard let rawValue = per100g ?? value ?? valueComputed,
+			let unitString = unit,
+			let unitEnum = Unit(rawValue: unitString)
+		else { return nil }
+		return UnitValue(value: rawValue, unit: unitEnum)
+	}
+
+	public var perServingUnitValue: UnitValue<Double>? {
+		guard let rawValue = perServing,
+			let unitString = unit,
+			let unitEnum = Unit(rawValue: unitString)
+		else { return nil }
+		return UnitValue(value: rawValue, unit: unitEnum)
+	}
+
+	public var preparedPer100gUnitValue: UnitValue<Double>? {
+		guard
+			let rawValue = preparedPer100g ?? preparedValue
+				?? preparedValueComputed,
+			let unitString = preparedUnit ?? unit,  // Fallback to main unit
+			let unitEnum = Unit(rawValue: unitString)
+		else { return nil }
+		return UnitValue(value: rawValue, unit: unitEnum)
+	}
+
+	public var preparedPerServingUnitValue: UnitValue<Double>? {
+		guard let rawValue = preparedPerServing,
+			let unitString = preparedUnit ?? unit,
+			let unitEnum = Unit(rawValue: unitString)
+		else { return nil }
+		return UnitValue(value: rawValue, unit: unitEnum)
+	}
+}
+
+// MARK: - Helpers
+
+private struct AnyCodingKey: CodingKey {
 	var stringValue: String
 	var intValue: Int?
 	init(stringValue: String) { self.stringValue = stringValue }
 	init?(intValue: Int) { return nil }
 }
+
+extension String {
+	// Converts "energyKcal" -> "energy-kcal"
+	fileprivate func camelCaseToKebabCase() -> String {
+		let pattern = "([a-z0-9])([A-Z])"
+		let regex = try! NSRegularExpression(pattern: pattern, options: [])
+		let range = NSRange(location: 0, length: self.count)
+		return regex.stringByReplacingMatches(
+			in: self, options: [], range: range, withTemplate: "$1-$2"
+		).lowercased()
+	}
+}

Sources/OpenFoodFactsSDK/Schemas/NutriscoreData.swift

@@ -0,0 +1,26 @@
+public struct NutriscoreData: Sendable, Codable {
+
+	public let saturatedFatRatio: Float?
+	public let saturatedFatRatioPoints: Int?
+	public let saturatedFatRatioValue: Float?
+
+	public let isBeverage: Int?
+	public let isCheese: Int?
+	public let isWater: Int?
+	public let isFat: Int?
+	public let energy: Int?
+
+	// ...
+
+	public enum CodingKeys: String, CodingKey {
+		case saturatedFatRatio = "saturated_fat_ratio"
+		case saturatedFatRatioPoints = "saturated_fat_ratio_points"
+		case saturatedFatRatioValue = "saturated_fat_ratio_value"
+		case isBeverage = "is_beverage"
+		case isCheese = "is_cheese"
+		case isWater = "is_water"
+		case isFat = "is_fat"
+		case energy
+	}
+
+}

Sources/OpenFoodFactsSDK/Schemas/Product.swift

@@ -1,98 +1,236 @@
 import Foundation
+import Units
 
 public struct Product: Codable, Sendable, Identifiable {
 	public let code: String?
 	public let productName: String?
+	public let genericName: String?
 	public let brands: String?
+	public let brandsTags: [String]?
 	public let quantity: String?
+
+	// MARK: - Images
 	public let imageFrontUrl: String?
 	public let imageSmallUrl: String?
-	public let ingredientsText: String?
+	public let imageUrl: String?
+	public let imageNutritionSmallUrl: String?
+	public let imageNutritionThumbUrl: String?
+	public let imageNutritionUrl: String?
+	public let imageIngredientsSmallUrl: String?
+	public let imageIngredientsThumbUrl: String?
+	public let imageIngredientsUrl: String?
 
-	// Grades
+	// MARK: - Quantities
+	public let productQuantity: Float?
+	public let productQuantityUnit: String?
+	public let servingQuantity: String?
+	public let servingQuantityUnit: String?
+	public let servingSize: String?
+
+	// MARK: - Grades & Scores
 	public let nutriscoreGrade: String?
+	public let nutriscoreData: NutriscoreData?
 	public let novaGroup: Int?
+	public let ecoscoreGrade: String?
 
-	// Nutriments
+	public let nutritionDataPer: String?
 	public let nutriments: Nutriments?
-	public let ingredients: [Ingredient]?
+	public let nutrientLevels: NutrientLevels?
+
+	// MARK: - Ingredients & Allergens
+	public let ingredientsText: String?
+	public let ingredients: [Ingredient]?
+	public let ingredientsHierarchy: [String]?
+	public let allergens: String?
+	public let allergensHierarchy: [String]?
 
-	// MARK: - Product-Misc
 	public let additivesN: Int?
+
+	// MARK: - Metadata
 	public let checked: String?
 	public let complete: Int?
 	public let completeness: Float?
-	public let ecoscoreGrade: String?
+	public var categories: String?
-	// ...
+	public var categoriesHierarchy: [String]?
-	public let nutrientLevels: NutrientLevels?
 
 	public var id: String {
 		guard let code = code else {
 			return UUID().uuidString
 		}
-
 		return code
 	}
 
+	// MARK: - Computed Properties (Units)
+	public var waterQuantity: Units.UnitValue<Double>? {
+		guard let ingredient = ingredients?.first(where: { $0.isWater }) else {
+			return nil
+		}
+
+		guard let quantity = productQuantity,
+			let estimate = ingredient.percentEstimate,
+			let rawUnit = productQuantityUnit,
+			let unit = Units.Unit(rawValue: rawUnit)
+		else {
+			return nil
+		}
+
+		return Double(quantity * (estimate / 100))[unit]
+	}
+
+	public var isLiquid: Bool {
+		guard let rawUnit = productQuantityUnit,
+			let unit = Units.Unit(rawValue: rawUnit)
+		else {
+			return false
+		}
+
+		return unit.category == .volume
+	}
+
+	// MARK: - CodingKeys
 	private enum CodingKeys: String, CodingKey {
 		case code
 		case productName = "product_name"
+		case genericName = "generic_name"
 		case brands
+		case brandsTags = "brands_tags"
 		case quantity
+
+		// Images
 		case imageFrontUrl = "image_front_url"
 		case imageSmallUrl = "image_small_url"
+		case imageUrl = "image_url"
+		case imageNutritionSmallUrl = "image_nutrition_small_url"
+		case imageNutritionThumbUrl = "image_nutrition_thumb_url"
+		case imageNutritionUrl = "image_nutrition_url"
+		case imageIngredientsSmallUrl = "image_ingredients_small_url"
+		case imageIngredientsThumbUrl = "image_ingredients_thumb_url"
+		case imageIngredientsUrl = "image_ingredients_url"
+
+		// Quantities
+		case productQuantity = "product_quantity"
+		case productQuantityUnit = "product_quantity_unit"
+		case servingQuantity = "serving_quantity"
+		case servingQuantityUnit = "serving_quantity_unit"
+		case servingSize = "serving_size"
+
 		case ingredientsText = "ingredients_text"
+		case ingredients
+		case ingredientsHierarchy = "ingredients_hierarchy"
+
+		// Grades & Data
 		case nutriscoreGrade = "nutriscore_grade"
+		case nutriscoreData = "nutriscore_data"
 		case ecoscoreGrade = "ecoscore_grade"
 		case novaGroup = "nova_group"
 		case nutriments
-		case ingredients
+		case nutrientLevels = "nutrient_levels"
+		case nutritionDataPer = "nutrition_data_per"
+
 		case complete
 		case completeness
 		case additivesN = "additives_n"
 		case checked
-		case nutrientLevels = "nutrient_levels"
+
+		case allergens
+		case allergensHierarchy = "allergens_hierarchy"
+		case categories
+		case categoriesHierarchy = "categories_hierarchy"
 	}
 
+	// MARK: - Initializer
 	public init(from decoder: any Decoder) throws {
 		let container = try decoder.container(keyedBy: CodingKeys.self)
 
 		code = try container.decodeIfPresent(String.self, forKey: .code)
 		productName = try container.decodeIfPresent(
 			String.self, forKey: .productName)
+		genericName = try container.decodeIfPresent(
+			String.self, forKey: .genericName)
 		brands = try container.decodeIfPresent(String.self, forKey: .brands)
+		brandsTags = try container.decodeIfPresent(
+			[String].self, forKey: .brandsTags)
 		quantity = try container.decodeIfPresent(String.self, forKey: .quantity)
+
+		// Images
 		imageFrontUrl = try container.decodeIfPresent(
 			String.self, forKey: .imageFrontUrl)
 		imageSmallUrl = try container.decodeIfPresent(
 			String.self, forKey: .imageSmallUrl)
+		imageUrl = try container.decodeIfPresent(String.self, forKey: .imageUrl)
+		imageNutritionSmallUrl = try container.decodeIfPresent(
+			String.self, forKey: .imageNutritionSmallUrl)
+		imageNutritionThumbUrl = try container.decodeIfPresent(
+			String.self, forKey: .imageNutritionThumbUrl)
+		imageNutritionUrl = try container.decodeIfPresent(
+			String.self, forKey: .imageNutritionUrl)
+		imageIngredientsSmallUrl = try container.decodeIfPresent(
+			String.self, forKey: .imageIngredientsSmallUrl)
+		imageIngredientsThumbUrl = try container.decodeIfPresent(
+			String.self, forKey: .imageIngredientsThumbUrl)
+		imageIngredientsUrl = try container.decodeIfPresent(
+			String.self, forKey: .imageIngredientsUrl)
+
+		// Quantities (Robust decoding)
+		productQuantity = try container.decodeFloatOrString(
+			forKey: .productQuantity)
+		productQuantityUnit = try container.decodeIfPresent(
+			String.self, forKey: .productQuantityUnit)
+
+		// servingQuantity is String?, but API might return a number
+		if let floatVal = try? container.decode(
+			Float.self, forKey: .servingQuantity)
+		{
+			servingQuantity = String(floatVal)
+		} else {
+			servingQuantity = try container.decodeIfPresent(
+				String.self, forKey: .servingQuantity)
+		}
+
+		servingQuantityUnit = try container.decodeIfPresent(
+			String.self, forKey: .servingQuantityUnit)
+		servingSize = try container.decodeIfPresent(
+			String.self, forKey: .servingSize)
+
+		// Ingredients & Categories
 		ingredientsText = try container.decodeIfPresent(
 			String.self, forKey: .ingredientsText)
-
-		// Grades
-		nutriscoreGrade = try container.decodeIfPresent(
-			String.self, forKey: .nutriscoreGrade)
-		novaGroup = try container.decodeIfPresent(
-			Int.self, forKey: .novaGroup)
-
-		// Nutriments
-		nutriments = try container.decodeIfPresent(
-			Nutriments.self, forKey: .nutriments)
 		ingredients = try container.decodeIfPresent(
 			[Ingredient].self, forKey: .ingredients)
+		ingredientsHierarchy = try container.decodeIfPresent(
+			[String].self, forKey: .ingredientsHierarchy)
 
-		// MARK: - Product-Misc
+		categories = try container.decodeIfPresent(
+			String.self, forKey: .categories)
+		categoriesHierarchy = try container.decodeIfPresent(
+			[String].self, forKey: .categoriesHierarchy)
+
+		// Grades & Nutriments
+		nutriscoreGrade = try container.decodeIfPresent(
+			String.self, forKey: .nutriscoreGrade)
+		nutriscoreData = try container.decodeIfPresent(
+			NutriscoreData.self, forKey: .nutriscoreData)
+		novaGroup = try container.decodeIfPresent(Int.self, forKey: .novaGroup)
+		ecoscoreGrade = try container.decodeIfPresent(
+			String.self, forKey: .ecoscoreGrade)
+
+		nutriments = try container.decodeIfPresent(
+			Nutriments.self, forKey: .nutriments)
+		nutrientLevels = try container.decodeIfPresent(
+			NutrientLevels.self, forKey: .nutrientLevels)
+		nutritionDataPer = try container.decodeIfPresent(
+			String.self, forKey: .nutritionDataPer)
+
+		// Misc
 		additivesN = try container.decodeIfPresent(
 			Int.self, forKey: .additivesN)
 		checked = try container.decodeIfPresent(String.self, forKey: .checked)
 		complete = try container.decodeIfPresent(Int.self, forKey: .complete)
 		completeness = try container.decodeFloatOrString(forKey: .completeness)
-		ecoscoreGrade = try container.decodeIfPresent(
-			String.self, forKey: .ecoscoreGrade)
-		// ...
-		nutrientLevels = try container.decodeIfPresent(
-			NutrientLevels.self, forKey: .nutrientLevels)
 
+		allergens = try container.decodeIfPresent(
+			String.self, forKey: .allergens)
+		allergensHierarchy = try container.decodeIfPresent(
+			[String].self, forKey: .allergensHierarchy)
 	}
-
 }

Tests/OpenFoodFactsTests/OpenFoodFactsTests.swift

@@ -36,7 +36,6 @@ final class OpenFoodFactsTests: XCTestCase {
 			.tag(tag: .brands, value: "milka"),
 			.pageSize(5),
 			.sort(.popularity),
-			fields: [.nutrientLevels]
 		)
 
 		let jsonResults = try JSONEncoder().encode(results)