Add profile expiration time to settings page

Common/FeatureFlags.swift

@@ -37,6 +37,7 @@ struct FeatureFlagConfiguration: Decodable {
     let usePositiveMomentumAndRCForManualBoluses: Bool
     let dynamicCarbAbsorptionEnabled: Bool
     let adultChildInsulinModelSelectionEnabled: Bool
+    let profileExpirationSettingsViewEnabled: Bool
 
 
     fileprivate init() {
@@ -212,6 +213,13 @@ struct FeatureFlagConfiguration: Decodable {
         #endif
 
         self.dynamicCarbAbsorptionEnabled = true
+
+        // ProfileExpirationSettingsView is inverse, since the default state is enabled.
+        #if PROFILE_EXPIRATION_SETTINGS_VIEW_DISABLED
+        self.profileExpirationSettingsViewEnabled = false
+        #else
+        self.profileExpirationSettingsViewEnabled = true
+        #endif
     }
 }
 
@@ -244,7 +252,8 @@ extension FeatureFlagConfiguration : CustomDebugStringConvertible {
             "* simpleBolusCalculatorEnabled: \(simpleBolusCalculatorEnabled)",
             "* usePositiveMomentumAndRCForManualBoluses: \(usePositiveMomentumAndRCForManualBoluses)",
             "* dynamicCarbAbsorptionEnabled: \(dynamicCarbAbsorptionEnabled)",
-            "* adultChildInsulinModelSelectionEnabled: \(adultChildInsulinModelSelectionEnabled)"
+            "* adultChildInsulinModelSelectionEnabled: \(adultChildInsulinModelSelectionEnabled)",
+            "* profileExpirationSettingsViewEnabled: \(profileExpirationSettingsViewEnabled)"
         ].joined(separator: "\n")
     }
 }

Loop/Managers/ProfileExpirationAlerter.swift

@@ -14,6 +14,7 @@ import LoopCore
 class ProfileExpirationAlerter {
 
     static let expirationAlertWindow: TimeInterval = .days(20)
+    static let settingsPageExpirationWarningModeWindow: TimeInterval = .days(3)
 
     static func alertIfNeeded(viewControllerToPresentFrom: UIViewController) {
 
@@ -40,9 +41,11 @@ class ProfileExpirationAlerter {
         formatter.maximumUnitCount = 1
         let timeUntilExpirationStr = formatter.string(from: timeUntilExpiration)
 
+        let alertMessage = createVerboseAlertMessage(timeUntilExpirationStr: timeUntilExpirationStr!)
+
         let dialog = UIAlertController(
             title: NSLocalizedString("Profile Expires Soon", comment: "The title for notification of upcoming profile expiration"),
-            message: String(format: NSLocalizedString("%1$@ will stop working in %2$@. You will need to update before that, with a new provisioning profile.", comment: "Format string for body for notification of upcoming provisioning profile expiration. (1: app name) (2: amount of time until expiration"), Bundle.main.bundleDisplayName, timeUntilExpirationStr!),
+            message: alertMessage,
             preferredStyle: .alert)
         dialog.addAction(UIAlertAction(title: NSLocalizedString("OK", comment: "Text for ok action on notification of upcoming profile expiration"), style: .default, handler: nil))
         dialog.addAction(UIAlertAction(title: NSLocalizedString("More Info", comment: "Text for more info action on notification of upcoming profile expiration"), style: .default, handler: { (_) in
@@ -52,4 +55,32 @@ class ProfileExpirationAlerter {
 
         UserDefaults.appGroup?.lastProfileExpirationAlertDate = now
     }
+
+    static func createVerboseAlertMessage(timeUntilExpirationStr:String) -> String {
+        return String(format: NSLocalizedString("%1$@ will stop working in %2$@. You will need to update before that, with a new provisioning profile.", comment: "Format string for body for notification of upcoming provisioning profile expiration. (1: app name) (2: amount of time until expiration"), Bundle.main.bundleDisplayName, timeUntilExpirationStr)
+    }
+
+    static func isNearProfileExpiration(profileExpiration:Date) -> Bool {
+        return profileExpiration.timeIntervalSinceNow < settingsPageExpirationWarningModeWindow
+    }
+
+    static func createProfileExpirationSettingsMessage(profileExpiration:Date) -> String {
+        let nearExpiration = isNearProfileExpiration(profileExpiration: profileExpiration)
+        let maxUnitCount = nearExpiration ? 2 : 1 // only include hours in the msg if near expiration
+        let readableRelativeTime: String? = relativeTimeFormatter(maxUnitCount: maxUnitCount).string(from: profileExpiration.timeIntervalSinceNow)
+        let relativeTimeRemaining: String = readableRelativeTime ?? NSLocalizedString("Unknown time", comment: "Unknown amount of time in settings' profile expiration section")
+        let verboseMessage = createVerboseAlertMessage(timeUntilExpirationStr: relativeTimeRemaining)
+        let conciseMessage = relativeTimeRemaining + NSLocalizedString(" remaining", comment: "remaining time in setting's profile expiration section")
+        return nearExpiration ? verboseMessage : conciseMessage
+    }
+
+    private static func relativeTimeFormatter(maxUnitCount:Int) -> DateComponentsFormatter {
+        let formatter = DateComponentsFormatter()
+        let includeHours = maxUnitCount == 2
+        formatter.allowedUnits = includeHours ? [.day, .hour] :  [.day]
+        formatter.unitsStyle = .full
+        formatter.zeroFormattingBehavior = .dropLeading
+        formatter.maximumUnitCount = maxUnitCount
+        return formatter;
+    }
 }

Loop/Views/SettingsView.swift

@@ -58,6 +58,9 @@ public struct SettingsView: View {
                     servicesSection
                 }
                 supportSection
+                if let profileExpiration = Bundle.main.profileExpiration, FeatureFlags.profileExpirationSettingsViewEnabled {
+                    profileExpirationSection(profileExpiration: profileExpiration)
+                }
             }
             .insetGroupedListStyle()
             .navigationBarTitle(Text(NSLocalizedString("Settings", comment: "Settings screen title")))
@@ -335,6 +338,40 @@ extension SettingsView {
             }
         }
     }
+
+    /*
+     DIY loop specific component to show users the amount of time remaining on their build before a rebuild is necessary.
+     */
+    private func profileExpirationSection(profileExpiration:Date) -> some View {
+        let nearExpiration : Bool = ProfileExpirationAlerter.isNearProfileExpiration(profileExpiration: profileExpiration)
+        let profileExpirationMsg = ProfileExpirationAlerter.createProfileExpirationSettingsMessage(profileExpiration: profileExpiration)
+        let readableExpirationTime = Self.dateFormatter.string(from: profileExpiration)
+
+        return Section(header: SectionHeader(label: NSLocalizedString("App Profile", comment: "Settings app profile section")),
+                       footer: Text(NSLocalizedString("Profile expires ", comment: "Time that profile expires") + readableExpirationTime)) {
+            if(nearExpiration) {
+                Text(profileExpirationMsg).foregroundColor(.red)
+            } else {
+                HStack {
+                    Text("Profile Expiration", comment: "Settings App Profile expiration view")
+                    Spacer()
+                    Text(profileExpirationMsg).foregroundColor(Color.secondary)
+                }
+            }
+            Button(action: {
+                UIApplication.shared.open(URL(string: "https://loopkit.github.io/loopdocs/build/updating/")!)
+            }) {
+                Text(NSLocalizedString("How to update (LoopDocs)", comment: "The title text for how to update"))
+            }
+        }
+    }
+
+    private static var dateFormatter: DateFormatter = {
+        let dateFormatter = DateFormatter()
+        dateFormatter.dateStyle = .long
+        dateFormatter.timeStyle = .short
+        return dateFormatter // formats date like "February 4, 2023 at 2:35 PM"
+    }()
 
     private var plusImage: some View {
         Image(systemName: "plus.circle")