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CarbEntryEditViewController.swift
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CarbEntryEditViewController.swift
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//
// CarbEntryEditViewController.swift
// CarbKit
//
// Created by Nathan Racklyeft on 1/15/16.
// Copyright © 2016 Nathan Racklyeft. All rights reserved.
// Fat-Protein Unit code by Robert Silvers, 10/2018.
import UIKit
import HealthKit
import LoopKit
public final class CarbEntryEditViewController: UITableViewController {
var navigationDelegate = CarbEntryNavigationDelegate()
public var defaultAbsorptionTimes: CarbStore.DefaultAbsorptionTimes? {
didSet {
if let times = defaultAbsorptionTimes {
orderedAbsorptionTimes = [times.fast, times.medium, times.slow]
}
}
}
fileprivate var orderedAbsorptionTimes = [TimeInterval]()
public var preferredUnit = HKUnit.gram()
public var maxQuantity = HKQuantity(unit: .gram(), doubleValue: 250)
public var FPCaloriesRatio: Double = 0.0
public var onsetDelay: Double = 0.0
/// Entry configuration values. Must be set before presenting.
public var absorptionTimePickerInterval = TimeInterval(minutes: 30)
public var maxAbsorptionTime = TimeInterval(hours: 16)
public var maximumDateFutureInterval = TimeInterval(hours: 4)
public var originalCarbEntry: StoredCarbEntry? {
didSet {
if let entry = originalCarbEntry {
quantity = entry.quantity
date = entry.startDate
foodType = entry.foodType
absorptionTime = entry.absorptionTime
absorptionTimeWasEdited = true
usesCustomFoodType = true
}
}
}
fileprivate var quantity: HKQuantity?
fileprivate var carbQuantity: Double? = 0.0
fileprivate var fatQuantity: Double? = 0.0
fileprivate var proteinQuantity: Double? = 0.0
fileprivate var FPUQuantity: HKQuantity?
fileprivate var date = Date()
fileprivate var foodType: String?
fileprivate var absorptionTime: TimeInterval?
fileprivate var absorptionTimeWasEdited = false
fileprivate var usesCustomFoodType = false
public var updatedCarbEntry: NewCarbEntry? {
if let quantity = quantity,
var absorptionTime = absorptionTime ?? defaultAbsorptionTimes?.medium
{
if let o = originalCarbEntry, o.quantity == quantity && o.startDate == date && o.foodType == foodType && o.absorptionTime == absorptionTime {
return nil // No changes were made
}
if ((proteinQuantity! > 0.0) || (fatQuantity! > 0.0)) { // RSS - If fat and protein were entered, then carbs are always fast.
return NewCarbEntry(
quantity: quantity,
startDate: date,
foodType: foodType,
absorptionTime: 7200,
externalID: originalCarbEntry?.externalID
)
} else {
return NewCarbEntry(
quantity: quantity,
startDate: date,
foodType: foodType,
absorptionTime: absorptionTime,
externalID: originalCarbEntry?.externalID
)
}
} else {
return nil
}
}
public var updatedFPCarbEntry: NewCarbEntry? {
if let quantity = quantity,
let absorptionTime = absorptionTime ?? defaultAbsorptionTimes?.medium
{
if let o = originalCarbEntry, o.quantity == quantity && o.startDate == date && o.foodType == foodType && o.absorptionTime == absorptionTime {
// if ((proteinQuantity == 0) && (fatQuantity == 0)) {
// return nil // No changes were made
// }
return nil // No changes were made
}
/// See https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2901033/
//let FPCaloriesRatio = 100.0
//let onsetDelay = 60.0
let proteinCalories = proteinQuantity! * 4
let fatCalories = fatQuantity! * 9
var lowCarbMultiplier: Double = Double(carbQuantity!)
// If carbs are 40 or more, then fat and protein are full weught.
// If carbs are 0, then fat and protein are 50% weight.
// If carbs are 20, then fat and protein are 75% weight.
// This is based on medical paper data that extra insulin is
// most important for high-carb meals.
lowCarbMultiplier = 1.0
let FPU = Double(proteinCalories + fatCalories) / Double(FPCaloriesRatio)
let carbEquivilant = FPU * 10 * lowCarbMultiplier
/*The first two hours is to generalize the research-paper equation. But then add 3 more hours to the Loop absorption time to better mimic the effect of the duration of a pump square-wave (because the insulin will still have significant effect for about three hours after the square-wave ends). This does not need to be exact because individuals will tune it to their personal response using the FPU-Ratio setting.*/
var squareWaveDuration = 2.0 + FPU + 3.0
if squareWaveDuration > 16 { // Set some reasonable max.
squareWaveDuration = 16
}
if carbEquivilant >= 1 {
return NewCarbEntry(
quantity: HKQuantity(unit: .gram(), doubleValue: carbEquivilant),
startDate: date + 60 * onsetDelay,
foodType: foodType,
absorptionTime: .hours(squareWaveDuration),
externalID: originalCarbEntry?.externalID)
} else {
return nil
}
} else {
return nil
}
}
private var isSampleEditable: Bool {
return originalCarbEntry?.createdByCurrentApp != false
}
public override func viewDidLoad() {
super.viewDidLoad()
tableView.rowHeight = UITableView.automaticDimension
tableView.estimatedRowHeight = 44
tableView.register(DateAndDurationTableViewCell.nib(), forCellReuseIdentifier: DateAndDurationTableViewCell.className)
if originalCarbEntry != nil {
title = LocalizedString("carb-entry-title-edit", value: "Edit Carb Entry", comment: "The title of the view controller to edit an existing carb entry")
} else {
title = LocalizedString("carb-entry-title-add", value: "Add Carb Entry", comment: "The title of the view controller to create a new carb entry")
}
}
private var foodKeyboard: CarbAbsorptionInputController!
@IBOutlet weak var saveButtonItem: UIBarButtonItem!
// MARK: - Table view data source
fileprivate enum Row: Int {
case value
case fat
case protein
case date
case foodType
case absorptionTime
static let count = 6
}
public override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
public override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return Row.count
}
public override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
switch Row(rawValue: indexPath.row)! {
case .value:
let cell = tableView.dequeueReusableCell(withIdentifier: CarbDecimalTextFieldTableViewCell.className) as! CarbDecimalTextFieldTableViewCell
if let quantity = quantity {
cell.number = NSNumber(value: quantity.doubleValue(for: preferredUnit))
}
cell.textField.isEnabled = isSampleEditable
cell.unitLabel?.text = String(describing: preferredUnit)
if originalCarbEntry == nil {
cell.textField.becomeFirstResponder()
}
cell.delegate = self
return cell
case .fat:
let cell = tableView.dequeueReusableCell(withIdentifier: FatDecimalTextFieldTableViewCell.className) as! FatDecimalTextFieldTableViewCell
cell.number = nil // Has to be nil or else the field will open with an actual 0 in it rather than empty with a virtual 0.
cell.textField.isEnabled = isSampleEditable
cell.unitLabel?.text = String(describing: preferredUnit)
cell.delegate = self
return cell
case .protein:
let cell = tableView.dequeueReusableCell(withIdentifier: ProteinDecimalTextFieldTableViewCell.className) as! ProteinDecimalTextFieldTableViewCell
cell.number = nil // Has to be nil or else the field will open with an actual 0 in it rather than empty with a virtual 0.
cell.textField.isEnabled = isSampleEditable
cell.unitLabel?.text = String(describing: preferredUnit)
cell.delegate = self
return cell
case .date:
let cell = tableView.dequeueReusableCell(withIdentifier: DateAndDurationTableViewCell.className) as! DateAndDurationTableViewCell
cell.titleLabel.text = LocalizedString("Date", comment: "Title of the carb entry date picker cell")
cell.datePicker.isEnabled = isSampleEditable
cell.datePicker.datePickerMode = .dateAndTime
cell.datePicker.maximumDate = Date(timeIntervalSinceNow: maximumDateFutureInterval)
cell.datePicker.minuteInterval = 1
cell.date = date
cell.delegate = self
return cell
case .foodType:
if usesCustomFoodType {
let cell = tableView.dequeueReusableCell(withIdentifier: TextFieldTableViewCell.className, for: indexPath) as! TextFieldTableViewCell
cell.textField.text = foodType
cell.delegate = self
if let textField = cell.textField as? CustomInputTextField {
if foodKeyboard == nil {
foodKeyboard = storyboard?.instantiateViewController(withIdentifier: CarbAbsorptionInputController.className) as? CarbAbsorptionInputController
foodKeyboard.delegate = self
}
textField.customInput = foodKeyboard
}
if originalCarbEntry == nil {
cell.textField.becomeFirstResponder()
}
return cell
} else {
let cell = tableView.dequeueReusableCell(withIdentifier: FoodTypeShortcutCell.className, for: indexPath) as! FoodTypeShortcutCell
if absorptionTime == nil {
cell.selectionState = .medium
}
cell.delegate = self
return cell
}
case .absorptionTime:
let cell = tableView.dequeueReusableCell(withIdentifier: DateAndDurationTableViewCell.className) as! DateAndDurationTableViewCell
cell.titleLabel.text = LocalizedString("Absorption Time", comment: "Title of the carb entry absorption time cell")
cell.datePicker.isEnabled = isSampleEditable
cell.datePicker.datePickerMode = .countDownTimer
cell.datePicker.minuteInterval = Int(absorptionTimePickerInterval.minutes)
if let duration = absorptionTime ?? defaultAbsorptionTimes?.medium {
cell.duration = duration
}
cell.maximumDuration = maxAbsorptionTime
cell.delegate = self
return cell
}
}
public override func tableView(_ tableView: UITableView, titleForFooterInSection section: Int) -> String? {
return LocalizedString("Optional Fat and protein entry will result in additional dosing over an extended duration for fat and protein calories, and will override manual entry of duration of absorption.", comment: "Carb entry section footer text explaining absorption time")
}
// MARK: - UITableViewDelegate
public override func tableView(_ tableView: UITableView, willSelectRowAt indexPath: IndexPath) -> IndexPath? {
tableView.endEditing(false)
tableView.beginUpdates()
hideDatePickerCells(excluding: indexPath)
return indexPath
} // RSS FIX Date selected there.
public override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
switch tableView.cellForRow(at: indexPath) {
case is FoodTypeShortcutCell:
usesCustomFoodType = true
tableView.reloadRows(at: [IndexPath(row: Row.foodType.rawValue, section: 0)], with: .none)
default:
break
}
tableView.endUpdates()
tableView.deselectRow(at: indexPath, animated: true)
}
// MARK: - Navigation
public override func restoreUserActivityState(_ activity: NSUserActivity) {
if let entry = activity.newCarbEntry {
quantity = entry.quantity
date = entry.startDate
if let foodType = entry.foodType {
self.foodType = foodType
usesCustomFoodType = true
}
if let absorptionTime = entry.absorptionTime {
self.absorptionTime = absorptionTime
absorptionTimeWasEdited = true
}
}
}
// When Add/Edit carb and hit "save" button, this gets called.
public override func shouldPerformSegue(withIdentifier identifier: String, sender: Any?) -> Bool {
self.tableView.endEditing(true)
guard let button = sender as? UIBarButtonItem, button == saveButtonItem else {
quantity = nil
return super.shouldPerformSegue(withIdentifier: identifier, sender: sender)
}
guard let absorptionTime = absorptionTime ?? defaultAbsorptionTimes?.medium else {
return false
}
guard absorptionTime <= maxAbsorptionTime else {
navigationDelegate.showAbsorptionTimeValidationWarning(for: self, maxAbsorptionTime: maxAbsorptionTime)
return false
}
guard let quantity = quantity, quantity.doubleValue(for: HKUnit.gram()) > 0 else { return false }
// // RSS - Allow one to save if protein or fat is entered, even if carb is 0.
// guard let cq = carbQuantity, let fq = fatQuantity, let pq = proteinQuantity, ((cq > 0.1) || (fq > 0.0) || (pq > 0.0)) else {
// return false
// }
guard quantity.compare(maxQuantity) != .orderedDescending else {
navigationDelegate.showMaxQuantityValidationWarning(for: self, maxQuantityGrams: maxQuantity.doubleValue(for: .gram()))
return false
}
return true
}
}
extension CarbEntryEditViewController: TextFieldTableViewCellDelegate {
public func textFieldTableViewCellDidBeginEditing(_ cell: TextFieldTableViewCell) {
// Collapse any date picker cells to save space
tableView.beginUpdates()
hideDatePickerCells()
tableView.endUpdates()
}
public func textFieldTableViewCellDidEndEditing(_ cell: TextFieldTableViewCell) {
guard let row = tableView.indexPath(for: cell)?.row else { return }
switch Row(rawValue: row) {
case .value?:
if let cell = cell as? CarbDecimalTextFieldTableViewCell, let number = cell.number {
carbQuantity = Double(number.doubleValue)
quantity = HKQuantity(unit: preferredUnit, doubleValue: number.doubleValue)
} else {
quantity = HKQuantity(unit: preferredUnit, doubleValue: 0.1)
// 0.1 to leave a marker for when you ate in HealthKit, Loop, and Nightscout.
carbQuantity = 0.1
}
case .fat?:
if let cell = cell as? FatDecimalTextFieldTableViewCell, let number = cell.number {
fatQuantity = Double(number.doubleValue)
} else {
fatQuantity = 0.0
}
case .protein?:
if let cell = cell as? ProteinDecimalTextFieldTableViewCell, let number = cell.number {
proteinQuantity = Double(number.doubleValue)
} else {
proteinQuantity = 0.0
}
case .foodType?:
foodType = cell.textField.text
default:
break
}
}
}
extension CarbEntryEditViewController: DatePickerTableViewCellDelegate {
public func datePickerTableViewCellDidUpdateDate(_ cell: DatePickerTableViewCell) {
guard let row = tableView.indexPath(for: cell)?.row else { return }
switch Row(rawValue: row) {
case .date?:
date = cell.date
case .absorptionTime?:
absorptionTime = cell.duration
absorptionTimeWasEdited = true
default:
break
}
}
}
extension CarbEntryEditViewController: FoodTypeShortcutCellDelegate {
func foodTypeShortcutCellDidUpdateSelection(_ cell: FoodTypeShortcutCell) {
var absorptionTime: TimeInterval?
switch cell.selectionState {
case .fast:
absorptionTime = defaultAbsorptionTimes?.fast
case .medium:
absorptionTime = defaultAbsorptionTimes?.medium
case .slow:
absorptionTime = defaultAbsorptionTimes?.slow
case .custom:
tableView.beginUpdates()
usesCustomFoodType = true
tableView.reloadRows(at: [IndexPath(row: Row.foodType.rawValue, section: 0)], with: .fade)
tableView.endUpdates()
}
if let absorptionTime = absorptionTime {
self.absorptionTime = absorptionTime
if let cell = tableView.cellForRow(at: IndexPath(row: Row.absorptionTime.rawValue, section: 0)) as? DateAndDurationTableViewCell {
cell.duration = absorptionTime
}
}
}
}
extension CarbEntryEditViewController: CarbAbsorptionInputControllerDelegate {
func carbAbsorptionInputControllerDidAdvanceToStandardInputMode(_ controller: CarbAbsorptionInputController) {
if let cell = tableView.cellForRow(at: IndexPath(row: Row.foodType.rawValue, section: 0)) as? TextFieldTableViewCell, let textField = cell.textField as? CustomInputTextField, textField.customInput != nil {
let customInput = textField.customInput
textField.customInput = nil
textField.resignFirstResponder()
textField.becomeFirstResponder()
textField.customInput = customInput
}
}
func carbAbsorptionInputControllerDidSelectItemInSection(_ section: Int) {
guard !absorptionTimeWasEdited, section < orderedAbsorptionTimes.count else {
return
}
let lastAbsorptionTime = self.absorptionTime
self.absorptionTime = orderedAbsorptionTimes[section]
if let cell = tableView.cellForRow(at: IndexPath(row: Row.absorptionTime.rawValue, section: 0)) as? DateAndDurationTableViewCell {
cell.duration = max(lastAbsorptionTime ?? 0, orderedAbsorptionTimes[section])
}
}
}