Average ISF/CR/CSF

FreeAPS/Sources/Localizations/Main/en.lproj/Localizable.strings

@@ -2470,6 +2470,21 @@ Enact a temp Basal or a temp target */
 /* Threshold Table Columns Title */
 "Threshold" = "Threshold";
 
+/* Dynamic settings View */
+"Averages" = "Averages";
+
+/* Dynamic settings View */
+"Average ISF" = "Average ISF";
+
+/* Dynamic settings View */
+"Average CR" = "Average CR";
+
+/* Dynamic settings View */
+"Average CSF" = "Average CSF";
+
+/* Dynamic settings View */
+"ISF: Insulin Sensitivity, CR: Carb Ratio,\nCSF: Carb Sensitivity = ISF/CR" = "ISF: Insulin Sensitivity, CR: Carb Ratio,\nCSF: Carb Sensitivity = ISF/CR";
+
 /* Header */
 "Calculator settings" = "Calculator settings";
 

FreeAPS/Sources/Modules/Dynamic/DynamicStateModel.swift

@@ -13,6 +13,7 @@ extension Dynamic {
         @Published var tddAdjBasal: Bool = false
         @Published var threshold_setting: Decimal = 65
         @Published var unit: GlucoseUnits = .mmolL
+        @Published var averages: (isf: Double, cr: Double, days: Double)?
 
         var preferences: Preferences {
             settingsManager.preferences
@@ -26,6 +27,7 @@ extension Dynamic {
             adjustmentFactor = settings.preferences.adjustmentFactor
             weightPercentage = settings.preferences.weightPercentage
             tddAdjBasal = settings.preferences.tddAdjBasal
+            averages = thirtyDaysAverages()
 
             if unit == .mmolL {
                 threshold_setting = settings.preferences.threshold_setting.asMmolL
@@ -65,5 +67,33 @@ extension Dynamic {
                 storage.save(newSettings, as: OpenAPS.Settings.preferences)
             }
         }
+
+        var reasons: [Reasons] {
+            CoreDataStorage().fetchReasons(interval: DateFilter().month)
+        }
+
+        private var sameUnit: Bool {
+            unit == .mmolL
+        }
+
+        private func thirtyDaysAverages() -> (isf: Double, cr: Double, days: Double)? {
+            let history = reasons.filter({ $0.mmol == sameUnit }).sorted(by: { $0.date ?? Date() > $1.date ?? Date() })
+            let days = -1 * (history.last?.date ?? .now).timeIntervalSince(history.first?.date ?? .now) / 8.64E4
+            // Avoid displaying "0 days"
+            guard !history.isEmpty, days >= 0.06 else { return nil }
+
+            let isf = history.compactMap(\.isf)
+            let cr = history.compactMap(\.cr)
+            let totalISF = isf.reduce(0, { x, y in
+                x + (y as Decimal)
+            })
+            let totalCR = cr.reduce(0, { x, y in
+                x + (y as Decimal)
+            })
+            let averageCR = Double(totalCR) / Double(cr.count)
+            let averageISF = Double(totalISF) / Double(isf.count)
+
+            return (averageISF, averageCR, days)
+        }
     }
 }

FreeAPS/Sources/Modules/Dynamic/View/DynamicRootView.swift

@@ -39,6 +39,13 @@ extension Dynamic {
             return formatter
         }
 
+        private var daysFormatter: NumberFormatter {
+            let formatter = NumberFormatter()
+            formatter.numberStyle = .decimal
+            formatter.maximumFractionDigits = 1
+            return formatter
+        }
+
         var body: some View {
             Form {
                 Section {
@@ -161,6 +168,49 @@ extension Dynamic {
                         Text(state.unit.rawValue)
                     }
                 } header: { Text("Safety") }
+
+                if let averages = state.averages {
+                    Section {
+                        HStack {
+                            Text("Average ISF")
+                            Spacer()
+                            Text(
+                                glucoseFormatter
+                                    .string(from: averages.isf as NSNumber) ?? ""
+                            )
+                            Text(state.unit.rawValue + NSLocalizedString("/U", comment: "")).foregroundColor(.secondary)
+                        }
+
+                        HStack {
+                            Text("Average CR")
+                            Spacer()
+                            Text(
+                                glucoseFormatter
+                                    .string(from: averages.cr as NSNumber) ?? ""
+                            )
+                            Text("g/U").foregroundColor(.secondary)
+                        }
+
+                        HStack {
+                            Text("Average CSF")
+                            Spacer()
+                            Text(
+                                glucoseFormatter
+                                    .string(from: (Double(averages.isf) / Double(averages.cr)) as NSNumber) ?? ""
+                            )
+                            Text(state.unit.rawValue + "/g").foregroundColor(.secondary)
+                        }
+                    } header: {
+                        HStack(spacing: 0) {
+                            Text("Averages")
+                            Text(
+                                " (" + (daysFormatter.string(from: averages.days as NSNumber) ?? "") + " " +
+                                    NSLocalizedString("days", comment: " days of data") + ")"
+                            )
+                        }
+                    }
+                    footer: { Text("ISF: Insulin Sensitivity, CR: Carb Ratio,\nCSF: Carb Sensitivity = ISF/CR") }
+                }
             }
             .blur(radius: isPresented ? 5 : 0)
             .description(isPresented: isPresented, alignment: .center) {