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//
// File.swift
// LoopAlgorithm
//
// Created by Cameron Ingham on 11/8/24.
//
import Foundation
let UnitMolarMassBloodGlucose = 180.1558800000541
let UnitMolarMassBloodGlucoseDivisible = UnitMolarMassBloodGlucose / 10
public enum LoopUnit: Sendable, CaseIterable {
case gram
case gramsPerUnit
case internationalUnit
case internationalUnitsPerHour
case milligramsPerDeciliter
case milligramsPerDeciliterPerSecond
case milligramsPerDeciliterPerMinute
case milligramsPerDeciliterPerInternationalUnit
case millimolesPerLiter
case millimolesPerLiterPerSecond
case millimolesPerLiterPerMinute
case millimolesPerLiterPerInternationalUnit
case percent
case hour
case minute
case second
public init(from string: String) {
self = LoopUnit.allCases.first(where: { $0.unitString == string }) ?? .gram
}
public func conversionFactor(toUnit: LoopUnit) -> Double? {
switch (self, toUnit) {
case (.gram, .gram),
(.gramsPerUnit, .gramsPerUnit),
(.internationalUnit, .internationalUnit),
(.internationalUnitsPerHour, .internationalUnitsPerHour),
(.milligramsPerDeciliter, .milligramsPerDeciliter),
(.milligramsPerDeciliterPerSecond, .milligramsPerDeciliterPerSecond),
(.milligramsPerDeciliterPerMinute, .milligramsPerDeciliterPerMinute),
(.milligramsPerDeciliterPerInternationalUnit, .milligramsPerDeciliterPerInternationalUnit),
(.millimolesPerLiter, .millimolesPerLiter),
(.millimolesPerLiterPerSecond, .millimolesPerLiterPerSecond),
(.millimolesPerLiterPerMinute, .millimolesPerLiterPerMinute),
(.millimolesPerLiterPerInternationalUnit, .millimolesPerLiterPerInternationalUnit),
(.percent, .percent),
(.hour, .hour),
(.minute, .minute),
(.second, .second):
return 1
case (.milligramsPerDeciliterPerSecond, .milligramsPerDeciliterPerMinute),
(.millimolesPerLiterPerSecond, .millimolesPerLiterPerMinute):
return 60
case (.second, .minute),
(.minute, .hour):
return 1/60
case (.milligramsPerDeciliterPerMinute, .milligramsPerDeciliterPerSecond),
(.millimolesPerLiterPerMinute, .millimolesPerLiterPerSecond):
return 1/60
case (.minute, .second),
(.hour, .minute):
return 60
case (.second, .hour):
return 1/3600
case (.hour, .second):
return 3600
case (.milligramsPerDeciliter, .millimolesPerLiter),
(.milligramsPerDeciliterPerSecond, .millimolesPerLiterPerSecond),
(.milligramsPerDeciliterPerMinute, .millimolesPerLiterPerMinute),
(.milligramsPerDeciliterPerInternationalUnit, .millimolesPerLiterPerInternationalUnit):
return 1/UnitMolarMassBloodGlucoseDivisible
case (.milligramsPerDeciliterPerSecond, .millimolesPerLiterPerMinute):
return 1/UnitMolarMassBloodGlucoseDivisible / 60
case (.milligramsPerDeciliterPerMinute, .millimolesPerLiterPerSecond):
return 1/UnitMolarMassBloodGlucoseDivisible * 60
case (.millimolesPerLiter, .milligramsPerDeciliter),
(.millimolesPerLiterPerSecond, .milligramsPerDeciliterPerSecond),
(.millimolesPerLiterPerMinute, .milligramsPerDeciliterPerMinute),
(.millimolesPerLiterPerInternationalUnit, .milligramsPerDeciliterPerInternationalUnit):
return UnitMolarMassBloodGlucoseDivisible
case (.millimolesPerLiterPerSecond, .milligramsPerDeciliterPerMinute):
return UnitMolarMassBloodGlucoseDivisible / 60
case (.millimolesPerLiterPerMinute, .milligramsPerDeciliterPerSecond):
return UnitMolarMassBloodGlucoseDivisible * 60
case (.gram, _),
(.gramsPerUnit, _),
(.internationalUnit, _),
(.internationalUnitsPerHour, _),
(.milligramsPerDeciliter, _),
(.milligramsPerDeciliterPerSecond, _),
(.milligramsPerDeciliterPerMinute, _),
(.milligramsPerDeciliterPerInternationalUnit, _),
(.millimolesPerLiter, _),
(.millimolesPerLiterPerSecond, _),
(.millimolesPerLiterPerMinute, _),
(.millimolesPerLiterPerInternationalUnit, _),
(.percent, _),
(.hour, _),
(.minute, _),
(.second, _):
return nil
default:
fatalError()
}
}
public var unitString: String {
switch self {
case .gram:
return "g"
case .gramsPerUnit:
return "g/IU"
case .percent:
return "%"
case .milligramsPerDeciliter:
return "mg/dL"
case .milligramsPerDeciliterPerSecond:
return "mg/dL·s"
case .milligramsPerDeciliterPerMinute:
return "mg/min·dL"
case .milligramsPerDeciliterPerInternationalUnit:
return "mg/dL·IU"
case .millimolesPerLiter:
return "mmol<\(UnitMolarMassBloodGlucose)>/L"
case .millimolesPerLiterPerSecond:
return "mmol<\(UnitMolarMassBloodGlucose)>/L·s"
case .millimolesPerLiterPerMinute:
return "mmol<\(UnitMolarMassBloodGlucose)>/min·L"
case .millimolesPerLiterPerInternationalUnit:
return "mmol<\(UnitMolarMassBloodGlucose)>/L·IU"
case .internationalUnit:
return "IU"
case .internationalUnitsPerHour:
return "IU/hr"
case .hour:
return "hr"
case .minute:
return "min"
case .second:
return "s"
}
}
public var localizedShortUnitString: String {
switch self {
case .millimolesPerLiter: return NSLocalizedString("mmol/L", comment: "The short unit display string for millimoles of glucose per liter")
case .milligramsPerDeciliter: return NSLocalizedString("mg/dL", comment: "The short unit display string for milligrams of glucose per decilter")
case .internationalUnit: return NSLocalizedString("U", comment: "The short unit display string for international units of insulin")
case .gram: return NSLocalizedString("g", comment: "The short unit display string for grams")
default: return String(describing: self)
}
}
public func unitDivided(by unit: LoopUnit) -> LoopUnit {
switch self {
case .milligramsPerDeciliter:
switch unit {
case .minute:
return .milligramsPerDeciliterPerMinute
case .second:
return .milligramsPerDeciliterPerSecond
case .internationalUnit:
return .milligramsPerDeciliterPerInternationalUnit
default:
fatalError("\(self.localizedShortUnitString) is not divisible by \(unit.localizedShortUnitString)")
}
case .millimolesPerLiter:
switch unit {
case .minute:
return .millimolesPerLiterPerMinute
case .second:
return .millimolesPerLiterPerSecond
case .internationalUnit:
return .millimolesPerLiterPerInternationalUnit
default:
fatalError("\(self.localizedShortUnitString) is not divisible by \(unit.localizedShortUnitString)")
}
case .internationalUnit:
switch unit {
case .hour:
return .internationalUnitsPerHour
default:
fatalError("\(self.localizedShortUnitString) is not divisible by \(unit.localizedShortUnitString)")
}
case .gram:
switch unit {
case .internationalUnit:
return .gramsPerUnit
default:
fatalError("\(self.localizedShortUnitString) is not divisible by \(unit.localizedShortUnitString)")
}
default:
fatalError("\(self.localizedShortUnitString) is not divisible by \(unit.localizedShortUnitString)")
}
}
}