IOB Alarm

LoopFollow.xcodeproj/project.pbxproj

@@ -140,6 +140,9 @@
 		DDAD162F2D2EF9830084BE10 /* RileyLinkHeartbeatBluetoothDevice.swift in Sources */ = {isa = PBXBuildFile; fileRef = DDAD162E2D2EF97C0084BE10 /* RileyLinkHeartbeatBluetoothDevice.swift */; };
 		DDB0AF522BB1A8BE00AFA48B /* BuildDetails.swift in Sources */ = {isa = PBXBuildFile; fileRef = DDB0AF512BB1A8BE00AFA48B /* BuildDetails.swift */; };
 		DDB0AF552BB1B24A00AFA48B /* BuildDetails.plist in Resources */ = {isa = PBXBuildFile; fileRef = DDB0AF542BB1B24A00AFA48B /* BuildDetails.plist */; };
+		DDB9FC7B2DDB573F00EFAA76 /* IOBCondition.swift in Sources */ = {isa = PBXBuildFile; fileRef = DDB9FC7A2DDB573F00EFAA76 /* IOBCondition.swift */; };
+		DDB9FC7D2DDB575300EFAA76 /* IOBAlarmEditor.swift in Sources */ = {isa = PBXBuildFile; fileRef = DDB9FC7C2DDB575300EFAA76 /* IOBAlarmEditor.swift */; };
+		DDB9FC7F2DDB584500EFAA76 /* BolusEntry.swift in Sources */ = {isa = PBXBuildFile; fileRef = DDB9FC7E2DDB584500EFAA76 /* BolusEntry.swift */; };
 		DDBE3ABD2CB5A961006B37DC /* OverrideView.swift in Sources */ = {isa = PBXBuildFile; fileRef = DDBE3ABC2CB5A961006B37DC /* OverrideView.swift */; };
 		DDC6CA3D2DD7C6090060EE25 /* TemporaryCondition.swift in Sources */ = {isa = PBXBuildFile; fileRef = DDC6CA3C2DD7C6090060EE25 /* TemporaryCondition.swift */; };
 		DDC6CA3F2DD7C6340060EE25 /* TemporaryAlarmEditor.swift in Sources */ = {isa = PBXBuildFile; fileRef = DDC6CA3E2DD7C6340060EE25 /* TemporaryAlarmEditor.swift */; };
@@ -492,6 +495,9 @@
 		DDB0AF502BB1A84500AFA48B /* capture-build-details.sh */ = {isa = PBXFileReference; lastKnownFileType = text.script.sh; path = "capture-build-details.sh"; sourceTree = "<group>"; };
 		DDB0AF512BB1A8BE00AFA48B /* BuildDetails.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BuildDetails.swift; sourceTree = "<group>"; };
 		DDB0AF542BB1B24A00AFA48B /* BuildDetails.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = BuildDetails.plist; sourceTree = "<group>"; };
+		DDB9FC7A2DDB573F00EFAA76 /* IOBCondition.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = IOBCondition.swift; sourceTree = "<group>"; };
+		DDB9FC7C2DDB575300EFAA76 /* IOBAlarmEditor.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = IOBAlarmEditor.swift; sourceTree = "<group>"; };
+		DDB9FC7E2DDB584500EFAA76 /* BolusEntry.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BolusEntry.swift; sourceTree = "<group>"; };
 		DDBE3ABC2CB5A961006B37DC /* OverrideView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OverrideView.swift; sourceTree = "<group>"; };
 		DDC6CA3C2DD7C6090060EE25 /* TemporaryCondition.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TemporaryCondition.swift; sourceTree = "<group>"; };
 		DDC6CA3E2DD7C6340060EE25 /* TemporaryAlarmEditor.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TemporaryAlarmEditor.swift; sourceTree = "<group>"; };
@@ -746,6 +752,7 @@
 		DD02475A2DB2E8CE00FCADF6 /* AlarmCondition */ = {
 			isa = PBXGroup;
 			children = (
+				DDB9FC7A2DDB573F00EFAA76 /* IOBCondition.swift */,
 				DDC6CA482DD8E47A0060EE25 /* PumpVolumeCondition.swift */,
 				DDC6CA442DD8D8E60060EE25 /* PumpChangeCondition.swift */,
 				DDC6CA422DD8CED20060EE25 /* SensorAgeCondition.swift */,
@@ -1019,6 +1026,7 @@
 		DDC7E53F2DBD8A1600EB1127 /* Editors */ = {
 			isa = PBXGroup;
 			children = (
+				DDB9FC7C2DDB575300EFAA76 /* IOBAlarmEditor.swift */,
 				DDC6CA4A2DD8E4960060EE25 /* PumpVolumeAlarmEditor.swift */,
 				DDC6CA462DD8D9010060EE25 /* PumpChangeAlarmEditor.swift */,
 				DDC6CA402DD8CCCE0060EE25 /* SensorAgeAlarmEditor.swift */,
@@ -1065,6 +1073,7 @@
 		DDCF9A7E2D85FCE6004DF4DD /* Alarm */ = {
 			isa = PBXGroup;
 			children = (
+				DDB9FC7E2DDB584500EFAA76 /* BolusEntry.swift */,
 				DDC6CA3B2DD7B9050060EE25 /* AlarmType */,
 				DD5DA27B2DC930D6003D44FC /* GlucoseValue.swift */,
 				DD4AFB602DB68BBC00BB593F /* AlarmListView.swift */,
@@ -1797,6 +1806,7 @@
 				DDCF9A8C2D86005E004DF4DD /* AlarmManager.swift in Sources */,
 				FCC6886924898FB100A0279D /* UserDefaultsValueGroups.swift in Sources */,
 				DDF2C0122BEFB733007A20E6 /* AppVersionManager.swift in Sources */,
+				DDB9FC7B2DDB573F00EFAA76 /* IOBCondition.swift in Sources */,
 				DD7E19862ACDA59700DBD158 /* BGCheck.swift in Sources */,
 				DD0650F12DCE9A9E004D3B41 /* MissedReadingCondition.swift in Sources */,
 				DDC6CA4B2DD8E4960060EE25 /* PumpVolumeAlarmEditor.swift in Sources */,
@@ -1874,6 +1884,7 @@
 				DD9ACA0A2D33095600415D8A /* MinAgoTask.swift in Sources */,
 				DD9ED0CC2D35526E000D2A63 /* SearchBar.swift in Sources */,
 				DDD10EFF2C510C3C00D76A8E /* ObservableUserDefaultsValue.swift in Sources */,
+				DDB9FC7D2DDB575300EFAA76 /* IOBAlarmEditor.swift in Sources */,
 				DD58171A2D299EF80041FB98 /* DexcomHeartbeatBluetoothDevice.swift in Sources */,
 				DD7F4C0B2DD51C5500D449E9 /* OverrideEndCondition.swift in Sources */,
 				DDFF3D872D14280500BF9D9E /* BackgroundRefreshSettingsViewModel.swift in Sources */,
@@ -1887,6 +1898,7 @@
 				DDCF979624C1443C002C9752 /* GeneralSettingsViewController.swift in Sources */,
 				FCC0FAC224922A22003E610E /* DictionaryKeyPath.swift in Sources */,
 				DD493AD72ACF2139009A6922 /* SuspendPump.swift in Sources */,
+				DDB9FC7F2DDB584500EFAA76 /* BolusEntry.swift in Sources */,
 				FC9788182485969B00A7906C /* AppDelegate.swift in Sources */,
 				DDD10F072C529DE800D76A8E /* Observable.swift in Sources */,
 				DDFF3D852D14279B00BF9D9E /* BackgroundRefreshSettingsView.swift in Sources */,

LoopFollow/Alarm/AlarmCondition/IOBCondition.swift

@@ -0,0 +1,68 @@
+// LoopFollow
+// IOBCondition.swift
+// Created by Jonas Björkert on 2025-05-19.
+
+//
+//  IOBCondition.swift
+//  LoopFollow
+//
+//  Created by Jonas Björkert on 2025-05-17.
+//
+
+import Foundation
+
+/// Fires when **any** of three rules is true
+/// ──────────────────────────────────────────
+///  1. latest IOB ≥ `threshold`
+///  2. within the last `lookbackMinutes`, the **count** of boluses
+///     ≥ `monitoringWindow` **and** each bolus ≥ `delta` units
+///  3. within that same window, the **sum** of boluses ≥ `threshold`
+struct IOBCondition: AlarmCondition {
+    static let type: AlarmType = .iob
+    init() {}
+
+    /// Convenience accessors to keep the code tidy
+    private struct Params {
+        let iobMax: Double // alarm.threshold         (units)
+        let minBolus: Double // alarm.delta             (units)
+        let countNeeded: Int // alarm.monitoringWindow  (bolus count)
+        let lookbackMin: Int // alarm.predictiveMinutes (minutes)
+
+        init?(alarm: Alarm) {
+            guard
+                let iobMax = alarm.threshold,
+                let minBolus = alarm.delta,
+                let count = alarm.monitoringWindow,
+                let mins = alarm.predictiveMinutes,
+                iobMax > 0, minBolus > 0, count > 0, mins > 0
+            else { return nil }
+
+            self.iobMax = iobMax
+            self.minBolus = minBolus
+            countNeeded = count
+            lookbackMin = mins
+        }
+    }
+
+    func evaluate(alarm: Alarm, data: AlarmData, now _: Date) -> Bool {
+        // ── 0. pull and sanity-check parameters ────────────────────────────
+        guard let p = Params(alarm: alarm) else { return false }
+
+        // ── 1. latest IOB alone high enough? ───────────────────────────────
+        if let iob = data.IOB, iob >= p.iobMax { return true }
+
+        // ── 2. look at the recent boluses ──────────────────────────────────
+        let cutoff = Date().addingTimeInterval(-Double(p.lookbackMin) * 60)
+
+        var count = 0
+        var total = 0.0
+
+        for b in data.recentBoluses where b.date >= cutoff && b.units >= p.minBolus {
+            count += 1
+            total += b.units
+            if count >= p.countNeeded || total >= p.iobMax { return true }
+        }
+
+        return false
+    }
+}

LoopFollow/Alarm/AlarmData.swift

@@ -18,6 +18,8 @@ struct AlarmData: Codable {
     let sageInsertTime: TimeInterval?
     let pumpInsertTime: TimeInterval?
     let latestPumpVolume: Double?
+    let IOB: Double?
+    let recentBoluses: [BolusEntry]
 }
 
 /*

LoopFollow/Alarm/AlarmEditing/AlarmEditor.swift

@@ -79,6 +79,8 @@ struct AlarmEditor: View {
             PumpChangeAlarmEditor(alarm: $alarm)
         case .pump:
             PumpVolumeAlarmEditor(alarm: $alarm)
+        case .iob:
+            IOBAlarmEditor(alarm: $alarm)
         /* TODO: add other condition types here */
         default:
             Text("No editor for \(alarm.type.rawValue)")

LoopFollow/Alarm/AlarmEditing/Editors/IOBAlarmEditor.swift

@@ -0,0 +1,87 @@
+// LoopFollow
+// IOBAlarmEditor.swift
+// Created by Jonas Björkert on 2025-05-19.
+
+//
+//  IOBAlarmEditor.swift
+//  LoopFollow
+//
+//  Created by Jonas Björkert on 2025-05-17.
+//
+
+import SwiftUI
+
+struct IOBAlarmEditor: View {
+    @Binding var alarm: Alarm
+
+    var body: some View {
+        Form {
+            InfoBanner(
+                text: "Alerts when insulin-on-board is high, or when several "
+                    + "boluses in quick succession exceed the limits you set.",
+                alarmType: alarm.type
+            )
+
+            AlarmGeneralSection(alarm: $alarm)
+
+            // ── individual bolus size ──
+            AlarmStepperSection(
+                header: "Bolus Size",
+                footer: "Only boluses equal to or larger than this are counted.",
+                title: "Bolus ≥",
+                range: 0.1 ... 20,
+                step: 0.1,
+                value: Binding(
+                    get: { alarm.delta ?? 1.0 },
+                    set: { alarm.delta = $0 }
+                )
+            )
+
+            // ── number of boluses ──
+            AlarmStepperSection(
+                header: "Bolus Count",
+                footer: "Number of qualifying boluses needed to trigger.",
+                title: "Count ≥",
+                range: 1 ... 10,
+                step: 1,
+                value: Binding(
+                    get: { Double(alarm.monitoringWindow ?? 2) },
+                    set: { alarm.monitoringWindow = Int($0) }
+                )
+            )
+
+            // ── look-back window ──
+            AlarmStepperSection(
+                header: "Time Window",
+                footer: "How far back to look for those boluses.",
+                title: "Minutes",
+                range: 5 ... 120,
+                step: 5,
+                value: Binding(
+                    get: { Double(alarm.predictiveMinutes ?? 30) },
+                    set: { alarm.predictiveMinutes = Int($0) }
+                )
+            )
+
+            // ── absolute IOB limit ──
+            AlarmStepperSection(
+                header: "Total IOB",
+                footer: "Alert if current IOB or total boluses reach this.",
+                title: "IOB ≥",
+                range: 1 ... 20,
+                step: 0.5,
+                value: Binding(
+                    get: { alarm.threshold ?? 6 },
+                    set: { alarm.threshold = $0 }
+                )
+            )
+
+            AlarmActiveSection(alarm: $alarm)
+            AlarmAudioSection(alarm: $alarm)
+            AlarmSnoozeSection(alarm: $alarm,
+                               range: 1 ... 24,
+                               step: 1) // snooze in hours
+        }
+        .navigationTitle(alarm.type.rawValue)
+    }
+}

LoopFollow/Alarm/AlarmManager.swift

@@ -30,6 +30,7 @@ class AlarmManager {
             SensorAgeCondition.self,
             PumpChangeCondition.self,
             PumpVolumeCondition.self,
+            IOBCondition.self,
             // TODO: add other condition types here
         ]
     ) {

LoopFollow/Alarm/BolusEntry.swift

@@ -0,0 +1,17 @@
+// LoopFollow
+// BolusEntry.swift
+// Created by Jonas Björkert on 2025-05-19.
+
+//
+//  BolusEntry.swift
+//  LoopFollow
+//
+//  Created by Jonas Björkert on 2025-05-19.
+//  Copyright © 2025 Jon Fawcett. All rights reserved.
+//
+import Foundation
+
+struct BolusEntry: Codable {
+    let units: Double
+    let date: Date
+}

LoopFollow/Task/AlarmTask.swift

@@ -24,6 +24,7 @@ extension MainViewController {
             let sensorInsertedAt = UserDefaultsRepository.alertSageInsertTime.value
             let pumpInsertTime = UserDefaultsRepository.alertCageInsertTime.value
             let latestPumpVol = self.latestPumpVolume
+            let bolusEntries = self.bolusData.map { BolusEntry(units: $0.value, date: Date(timeIntervalSince1970: $0.date)) }
 
             let alarmData = AlarmData(
                 bgReadings: self.bgData
@@ -42,7 +43,9 @@ extension MainViewController {
                 COB: COB,
                 sageInsertTime: sensorInsertedAt,
                 pumpInsertTime: pumpInsertTime,
-                latestPumpVolume: latestPumpVol
+                latestPumpVolume: latestPumpVol,
+                IOB: self.latestIOB?.value,
+                recentBoluses: bolusEntries,
             )
 
             let finalAlarmData: AlarmData