Allow deletion of measurements

TempTrack.xcodeproj/project.pbxproj

@@ -18,6 +18,7 @@
 		88404DE32A31F20E00D30244 /* Int+Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = 88404DE22A31F20E00D30244 /* Int+Extensions.swift */; };
 		88404DE52A31F23E00D30244 /* UInt16+Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = 88404DE42A31F23E00D30244 /* UInt16+Extensions.swift */; };
 		88404DE92A31F7D500D30244 /* Data+Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = 88404DE82A31F7D500D30244 /* Data+Extensions.swift */; };
+		88404DEB2A37BE3000D30244 /* DeviceWakeCause.swift in Sources */ = {isa = PBXBuildFile; fileRef = 88404DEA2A37BE3000D30244 /* DeviceWakeCause.swift */; };
 		88CDE04F2A2508E900114294 /* TempTrackApp.swift in Sources */ = {isa = PBXBuildFile; fileRef = 88CDE04E2A2508E900114294 /* TempTrackApp.swift */; };
 		88CDE0512A2508E900114294 /* ContentView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 88CDE0502A2508E900114294 /* ContentView.swift */; };
 		88CDE0532A2508EA00114294 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 88CDE0522A2508EA00114294 /* Assets.xcassets */; };
@@ -50,6 +51,7 @@
 		88404DE22A31F20E00D30244 /* Int+Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Int+Extensions.swift"; sourceTree = "<group>"; };
 		88404DE42A31F23E00D30244 /* UInt16+Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "UInt16+Extensions.swift"; sourceTree = "<group>"; };
 		88404DE82A31F7D500D30244 /* Data+Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Data+Extensions.swift"; sourceTree = "<group>"; };
+		88404DEA2A37BE3000D30244 /* DeviceWakeCause.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DeviceWakeCause.swift; sourceTree = "<group>"; };
 		88CDE04B2A2508E900114294 /* TempTrack.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = TempTrack.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		88CDE04E2A2508E900114294 /* TempTrackApp.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TempTrackApp.swift; sourceTree = "<group>"; };
 		88CDE0502A2508E900114294 /* ContentView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ContentView.swift; sourceTree = "<group>"; };
@@ -154,6 +156,7 @@
 				88CDE0732A28AEE500114294 /* DeviceManagerDelegate.swift */,
 				88CDE05E2A250F5200114294 /* DeviceState.swift */,
 				88CDE06C2A28A92000114294 /* DeviceInfo.swift */,
+				88404DEA2A37BE3000D30244 /* DeviceWakeCause.swift */,
 			);
 			path = Bluetooth;
 			sourceTree = "<group>";
@@ -283,6 +286,7 @@
 				E253A9222A2B39B700EC6B28 /* Color+Extensions.swift in Sources */,
 				88CDE0612A25108100114294 /* BluetoothClient.swift in Sources */,
 				88CDE0742A28AEE500114294 /* DeviceManagerDelegate.swift in Sources */,
+				88404DEB2A37BE3000D30244 /* DeviceWakeCause.swift in Sources */,
 				88CDE06D2A28A92000114294 /* DeviceInfo.swift in Sources */,
 				88404DD82A2F381B00D30244 /* HistoryList.swift in Sources */,
 				88CDE07E2A28AFF400114294 /* DeviceInfoView.swift in Sources */,

TempTrack.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -14,8 +14,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/SFSafeSymbols/SFSafeSymbols",
       "state" : {
-        "revision" : "7cca2d60925876b5953a2cf7341cd80fbeac983c",
+        "revision" : "2bcd249b49178247e6b52bac7d67d6e338a40cee",
-        "version" : "4.1.1"
+        "version" : "4.1.0"
       }
     }
   ],

TempTrack.xcodeproj/xcuserdata/imac.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -28,7 +28,7 @@
 		<key>TempTrack.xcscheme_^#shared#^_</key>
 		<dict>
 			<key>orderHint</key>
-			<integer>1</integer>
+			<integer>0</integer>
 		</dict>
 	</dict>
 </dict>

TempTrack/Bluetooth/BluetoothClient.swift

@@ -24,7 +24,7 @@ final class BluetoothClient: ObservableObject {
     @Published
     private(set) var deviceState: DeviceState = .disconnected {
         didSet {
-            print("State: \(deviceState.text)")
+            print("State: \(deviceState)")
             if case .configured = deviceState {
                 startRegularUpdates()
             } else {
@@ -38,6 +38,11 @@ final class BluetoothClient: ObservableObject {
         didSet {
             updateDeviceTimeIfNeeded()
             collectRecordedData()
+            if let deviceInfo, let runningTransfer {
+                runningTransfer.update(info: deviceInfo)
+                let next = runningTransfer.nextRequest()
+                addRequest(next)
+            }
         }
     }
     
@@ -95,7 +100,6 @@ final class BluetoothClient: ObservableObject {
             return
         }
         let next = openRequests.removeFirst()
-        //print("Starting request \(next)")
         
         guard connection.send(next.serialized) else {
             print("Failed to start request \(next)")
@@ -106,9 +110,19 @@ final class BluetoothClient: ObservableObject {
     }
     
     func addRequest(_ request: BluetoothRequest) {
-        // TODO: Check if request already exists
+        defer {
+            performNextRequest()
+        }
+        let type = request.byte
+        if let runningRequest, runningRequest.byte == type {
+            print("Skipping duplicate request \(request)")
+            return
+        }
+        guard !openRequests.contains(where: { $0.byte == type }) else {
+            print("Skipping duplicate request \(request)")
+            return
+        }
         openRequests.append(request)
-        performNextRequest()
     }
     
     // MARK: Device time
@@ -134,12 +148,15 @@ final class BluetoothClient: ObservableObject {
     @discardableResult
     func collectRecordedData() -> Bool {
         guard runningTransfer == nil else {
+            print("Transfer already running")
             return false
         }
         guard !openRequests.contains(where: { if case .getRecordingData = $0 { return true }; return false }) else {
+            print("Transfer already in scheduled")
             return false
         }
         guard let info = deviceInfo else {
+            print("No device info to start transfer")
             return false
         }
         guard info.numberOfStoredMeasurements > 0 else {
@@ -149,38 +166,27 @@ final class BluetoothClient: ObservableObject {
         let transfer = TemperatureDataTransfer(info: info)
         runningTransfer = transfer
         let next = transfer.nextRequest()
+        print("Starting transfer")
         addRequest(next)
         return true
     }
     
     private func didReceive(data: Data, offset: Int, count: Int) {
         guard let runningTransfer else {
+            print("No running transfer to process device data")
             return // TODO: Start new transfer?
         }
         runningTransfer.add(data: data, offset: offset, count: count)
-        continueTransfer()
-    }
-    
-    private func continueTransfer() {
-        guard let runningTransfer else {
-            return // TODO: Start new transfer?
-        }
         let next = runningTransfer.nextRequest()
         addRequest(next)
     }
     
     private func decode(info: Data) {
         guard let newInfo = try? DeviceInfo(info: info) else {
+            print("Failed to decode device info")
             return
         }
         self.deviceInfo = newInfo
-        if let runningTransfer {
-            runningTransfer.update(info: newInfo)
-            let next = runningTransfer.nextRequest()
-            addRequest(next)
-        } else if newInfo.numberOfStoredMeasurements > 0 {
-            collectRecordedData()
-        }
     }
 }
 
@@ -209,15 +215,31 @@ extension BluetoothClient: DeviceManagerDelegate {
         case .success:
             break
         case .responseInProgress:
+            print("Device is busy for \(runningRequest)")
             // Retry the request
             addRequest(runningRequest)
             return
+        case .invalidNumberOfBytesToDelete:
+            guard case .clearRecordingBuffer = runningRequest else {
+                // If clearing the recording buffer fails due to byte mismatch,
+                // then requesting new info will resolve the mismatch, and the transfer will be resumed
+                addRequest(.getInfo)
+                return
+            }
+            print("Request \(runningRequest) received non-matching responde about number of bytes to delete")
+        case .responseTooLarge:
+            guard case .getRecordingData = runningRequest else {
+                // If requesting bytes fails due to the response size,
+                // then requesting new info will update the response size, and the transfer will be resumed
+                addRequest(.getInfo)
+                return
+            }
+            print("Unexpectedly exceeded payload size for request \(runningRequest)")
         default:
             print("Unknown response \(data[0]) for request \(runningRequest)")
             // If clearing the recording buffer fails due to byte mismatch,
             // then requesting new info will resolve the mismatch, and the transfer will be resumed
-            // If requesting bytes fails due to the response size,
+            
-            // then requesting new info will update the response size, and the transfer will be resumed
             addRequest(.getInfo)
             return
         
@@ -240,6 +262,7 @@ extension BluetoothClient: DeviceManagerDelegate {
 
     private func didClearDeviceStorage() {
         guard let runningTransfer else {
+            print("No running transfer after clearing device storage")
             return
         }
         runningTransfer.completeTransfer()

TempTrack/Bluetooth/DeviceInfo.swift

@@ -33,6 +33,8 @@ struct DeviceInfo {
     
     let hasDeviceStartTimeSet: Bool
     
+    let wakeupReason: DeviceWakeCause
+    
     // MARK: Storage
     
     let storageSize: Int
@@ -74,6 +76,7 @@ extension DeviceInfo {
         let deviceStartTimeSeconds = try data.decodeFourByteInteger()
         self.sensor0 = try data.decodeSensor()
         self.sensor1 = try data.decodeSensor()
+        self.wakeupReason = .init(rawValue: try data.getByte()) ?? .WAKEUP_UNDEFINED
         
         if deviceStartTimeSeconds != 0 {
             self.hasDeviceStartTimeSet = true
@@ -101,6 +104,7 @@ extension DeviceInfo {
             numberOfSecondsRunning: 20,
             deviceStartTime: .now.addingTimeInterval(-20755),
             hasDeviceStartTimeSet: true,
+            wakeupReason: .WAKEUP_EXT0,
             storageSize: 10000,
             transferBlockSize: 180)
     }

TempTrack/Bluetooth/DeviceManager.swift

@@ -78,7 +78,6 @@ final class DeviceManager: NSObject, CBCentralManagerDelegate {
             return false
         }
         device.writeValue(data, for: characteristic, type: .withResponse)
-        //DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(200)) { }
         return self.read()
     }
 

TempTrack/Bluetooth/DeviceState.swift

@@ -26,27 +26,21 @@ enum DeviceState {
         case .bluetoothEnabled:
             return "Bluetooth enabled"
         case .scanning:
-            return "Scanning for devices..."
+            return "Scanning..."
         case .connecting(let device):
             guard let name = device.name else {
-                return "Connecting to device..."
+                return "Connecting..."
             }
             return "Connecting to \(name)..."
-        case .discoveringServices(let device):
+        case .discoveringServices:
-            guard let name = device.name else {
+            return "Discovering service..."
-                return "Setting up device..."
+        case .discoveringCharacteristic:
-            }
+            return "Discovering characteristic..."
-            return "Setting up \(name)..."
-        case .discoveringCharacteristic(let device):
-            guard let name = device.name else {
-                return "Setting up device..."
-            }
-            return "Setting up \(name)..."
         case .configured(let device, _):
             guard let name = device.name else {
                 return "Connected"
             }
-            return "Connected to \(name)"
+            return name
         case .disconnected:
             return "Not connected"
         }

TempTrack/Bluetooth/DeviceWakeCause.swift

@@ -0,0 +1,77 @@
+import Foundation
+
+enum DeviceWakeCause: UInt8 {
+    
+    /// In case of deep sleep, reset was not caused by exit from deep sleep
+    case WAKEUP_UNDEFINED = 0
+    
+    /// Not a wakeup cause, used to disable all wakeup sources with esp_sleep_disable_wakeup_source
+    case WAKEUP_ALL = 1
+    
+    /// Wakeup caused by external signal using RTC_IO
+    case WAKEUP_EXT0 = 2
+    
+    /// Wakeup caused by external signal using RTC_CNTL
+    case WAKEUP_EXT1 = 3
+    
+    /// Wakeup caused by timer
+    case WAKEUP_TIMER = 4
+    
+    /// Wakeup caused by touchpad
+    case WAKEUP_TOUCHPAD = 5
+    
+    /// Wakeup caused by ULP program
+    case WAKEUP_ULP = 6
+    
+    /// Wakeup caused by GPIO (light sleep only on ESP32, S2 and S3)
+    case WAKEUP_GPIO = 7
+    
+    /// Wakeup caused by UART (light sleep only)
+    case WAKEUP_UART = 8
+    
+    /// Wakeup caused by WIFI (light sleep only)
+    case WAKEUP_WIFI = 9
+    
+    /// Wakeup caused by COCPU int
+    case WAKEUP_COCPU = 10
+    
+    /// Wakeup caused by COCPU crash
+    case WAKEUP_COCPU_TRAP_TRIG = 11
+    
+    /// Wakeup caused by BT (light sleep only)
+    case WAKEUP_BT = 12
+}
+
+extension DeviceWakeCause {
+    
+    var text: String {
+        switch self {
+        case .WAKEUP_UNDEFINED:
+            return "Power On"
+        case .WAKEUP_ALL:
+            return ""
+        case .WAKEUP_EXT0:
+            return "Button"
+        case .WAKEUP_EXT1:
+            return "EXT1"
+        case .WAKEUP_TIMER:
+            return "Timer"
+        case .WAKEUP_TOUCHPAD:
+            return "Touch"
+        case .WAKEUP_ULP:
+            return "ELP"
+        case .WAKEUP_GPIO:
+            return "GPIO"
+        case .WAKEUP_UART:
+            return "UART"
+        case .WAKEUP_WIFI:
+            return "WiFi"
+        case .WAKEUP_COCPU:
+            return "CoCPU Interupt"
+        case .WAKEUP_COCPU_TRAP_TRIG:
+            return "CoCPU Crash"
+        case .WAKEUP_BT:
+            return "Bluetooth"
+        }
+    }
+}

TempTrack/ContentView.swift

@@ -126,7 +126,6 @@ struct ContentView: View {
         }
         .padding()
         .sheet(isPresented: $showDeviceInfo)  {
-        //.bottomSheet(isPresented: $showDeviceInfo, height: 650)  {
             if let info = bluetoothClient.deviceInfo {
                 DeviceInfoView(info: info, isPresented: $showDeviceInfo)
             } else {

TempTrack/Extensions/Data+Extensions.swift

@@ -6,6 +6,13 @@ enum DeviceInfoError: Error {
 
 extension Data {
     
+    mutating func getByte() throws -> UInt8 {
+        guard count >= 1 else {
+            throw DeviceInfoError.missingData
+        }
+        return removeFirst()
+    }
+    
     mutating func decodeUInt16() throws -> UInt16 {
         guard count >= 2 else {
             throw DeviceInfoError.missingData
@@ -29,15 +36,4 @@ extension Data {
         let byte3 = removeFirst()
         return (Int(byte3) << 24) | (Int(byte2) << 16) | (Int(byte1) << 8) | Int(byte0)
     }
-    
-    mutating func decodeSensor() throws -> TemperatureSensor? {
-        guard count >= 11 else {
-            throw DeviceInfoError.missingData
-        }
-        let address = Array(self[startIndex..<startIndex+8])
-        removeFirst(8)
-        let temperatureByte = removeFirst()
-        let time = try decodeUInt16()
-        return .init(address: address, valueByte: temperatureByte, secondsAgo: time)
-    }
 }

TempTrack/Extensions/Date+Extensions.swift

@@ -14,6 +14,32 @@ extension Date {
         self.init(timeIntervalSince1970: TimeInterval(seconds))
     }
     
+    var shortTimePassedText: String {
+        let secs = secondsToNow
+        guard secs > 1 else {
+            return "Now"
+        }
+        guard secs >= 60 else {
+            return "\(secs) s ago"
+        }
+        let minutes = secs / 60
+        guard minutes >= 60 else {
+            return "\(minutes) min ago"
+        }
+        let hours = minutes / 60
+        guard hours > 1 else {
+            return "1 hour ago"
+        }
+        guard hours >= 60 else {
+            return "\(hours) hours ago"
+        }
+        let days = hours / 24
+        guard days > 1 else {
+            return "1 day ago"
+        }
+        return "\(days) days ago"
+    }
+    
     var timePassedText: String {
         let secs = secondsToNow
         guard secs > 1 else {

TempTrack/Storage/TemperatureStorage.swift

@@ -83,6 +83,10 @@ final class TemperatureStorage: ObservableObject {
         String(format: "%08d.bin", index)
     }
     
+    private func fileUrl(for dateIndex: Int) -> URL {
+        storageFolder.appendingPathComponent(fileName(for: dateIndex))
+    }
+    
     private func fileUrl(for fileName: String) -> URL {
         storageFolder.appendingPathComponent(fileName)
     }
@@ -148,6 +152,21 @@ final class TemperatureStorage: ObservableObject {
         updateLastMeasurements(measurements)
     }
     
+    func removeMeasurements(for dateIndex: Int) {
+        let fileUrl = fileUrl(for: dateIndex)
+        guard fm.fileExists(atPath: fileUrl.path) else {
+            print("No measurements for \(fileUrl.lastPathComponent)")
+            return
+        }
+        do {
+            try fm.removeItem(at: fileUrl)
+            dailyMeasurementCounts = dailyMeasurementCounts.filter { $0.dateIndex != dateIndex }
+            recentMeasurements = recentMeasurements.filter { $0.date.dateIndex != dateIndex }
+        } catch {
+            print("Failed to delete \(fileUrl.lastPathComponent): \(error)")
+        }
+    }
+    
     /**
      - Returns: The number of new points
      */
@@ -245,7 +264,7 @@ final class TemperatureStorage: ObservableObject {
 private extension Array where Element == TemperatureMeasurement {
     
     @discardableResult
-    mutating func insert(_ measurement: TemperatureMeasurement) -> Bool {
+    mutating func insertIntoSorted(_ measurement: TemperatureMeasurement) -> Bool {
         guard !contains(measurement) else {
             return false
         }

TempTrack/Temperature/TemperatureDataTransfer.swift

@@ -55,6 +55,10 @@ final class TemperatureDataTransfer {
     }
     
     func add(data: Data, offset: Int, count: Int) {
+        guard currentByteIndex == offset else {
+            print("Discarding \(data.count) bytes at offset \(offset), expected \(currentByteIndex)")
+            return
+        }
         dataBuffer.append(data)
         currentByteIndex += data.count
         processBytes()

TempTrack/Temperature/TemperatureSensor.swift

@@ -28,7 +28,7 @@ struct TemperatureSensor {
     }
     
     var updateText: String {
-        date.timePassedText
+        date.shortTimePassedText
     }
     
     static func temperatureIcon(_ temp: Double?) -> SFSymbol {
@@ -60,3 +60,17 @@ extension TemperatureSensor {
         self.date = Date().addingTimeInterval(-TimeInterval(secondsAgo))
     }
 }
+
+extension Data {
+    
+    mutating func decodeSensor() throws -> TemperatureSensor? {
+        guard count >= 11 else {
+            throw DeviceInfoError.missingData
+        }
+        let address = Array(self[startIndex..<startIndex+8])
+        removeFirst(8)
+        let temperatureByte = removeFirst()
+        let time = try decodeUInt16()
+        return .init(address: address, valueByte: temperatureByte, secondsAgo: time)
+    }
+}

TempTrack/Temperature/TemperatureValue.swift

@@ -49,7 +49,7 @@ enum TemperatureValue {
         case .invalidMeasurement:
             return "Invalid"
         case .value(let value):
-            return String(format:" %.1f°C", value)
+            return String(format:"%.1f°C", value)
         }
     }
 }

TempTrack/Views/DeviceInfoView.swift

@@ -21,14 +21,14 @@ struct DeviceInfoView: View {
     private var runTimeString: String {
         let number = info.numberOfSecondsRunning
         guard number >= 60 else {
-            return "\(number) seconds"
+            return "\(number) s"
         }
         let minutes = number / 60
         guard minutes > 1 else {
-            return "1 minute"
+            return "1 min"
         }
         guard minutes >= 60 else {
-            return "\(minutes) minutes"
+            return "\(minutes) min"
         }
         let hours = minutes / 60
         guard hours > 1 else {
@@ -49,7 +49,7 @@ struct DeviceInfoView: View {
         guard secs > 1 else {
             return "Now"
         }
-        return "In \(secs) seconds"
+        return "In \(secs) s"
     }
     
     private var storageIcon: SFSymbol {
@@ -74,13 +74,7 @@ struct DeviceInfoView: View {
                     HStack {
                         Image(systemSymbol: sensor.temperatureIcon)
                             .frame(width: 30)
-                        Text(sensor.temperatureText)
+                        Text("\(sensor.temperatureText) (\(sensor.updateText))")
-                    }
-                    HStack {
-                        Image(systemSymbol: .arrowTriangle2Circlepath)
-                            .frame(width: 30)
-                        Text(sensor.updateText)
-                        Spacer()
                     }
                     HStack {
                         Image(systemSymbol: .tag)
@@ -112,41 +106,40 @@ struct DeviceInfoView: View {
         guard abs(offset) > 1 else {
             return "No clock offset"
         }
-        return "Offset: \(offset) seconds"
+        return "Offset: \(offset) s"
     }
     
     var body: some View {
         NavigationView {
             VStack(alignment: .leading, spacing: 5) {
                 VStack(alignment: .leading, spacing: 5) {
-                    Text("Recording")
+                    Text("System")
                         .font(.headline)
                     HStack {
                         Image(systemSymbol: .power)
                             .frame(width: 30)
-                        Text(df.string(from: info.deviceStartTime))
+                        Text("\(df.string(from: info.deviceStartTime)) (\(runTimeString))")
                         Spacer()
                     }
-                    HStack {
-                        Image(systemSymbol: .clock)
-                            .frame(width: 30)
-                        Text("\(runTimeString)")
-                    }
                     HStack {
                         Image(systemSymbol: .clockBadgeExclamationmark)
                             .frame(width: 30)
                         Text(clockOffsetText)
                     }
                     HStack {
-                        Image(systemSymbol: .stopwatch)
+                        Image(systemSymbol: .autostartstop)
                             .frame(width: 30)
-                        Text("Every \(info.measurementInterval) seconds")
+                        Text("Wakeup: \(info.wakeupReason.text)")
                         Spacer()
                     }
+                }
+                VStack(alignment: .leading, spacing: 5) {
+                    Text("Recording")
+                        .font(.headline)
                     HStack {
-                        Image(systemSymbol: .arrowTriangle2Circlepath)
+                        Image(systemSymbol: .stopwatch)
                             .frame(width: 30)
-                        Text(nextUpdateText)
+                        Text("\(nextUpdateText) (Every \(info.measurementInterval) s)")
                         Spacer()
                     }
                 }
@@ -192,7 +185,6 @@ struct DeviceInfoView: View {
 struct DeviceInfoView_Previews: PreviewProvider {
     static var previews: some View {
         DeviceInfoView(info: .mock, isPresented: .constant(true))
-            .previewLayout(.fixed(width: 375, height: 650))
     }
 }
 

TempTrack/Views/HistoryList.swift

@@ -12,12 +12,24 @@ struct HistoryList: View {
                     TemperatureDayOverview(storage: storage, dateIndex: day.dateIndex)
                 }) {
                     HistoryListRow(entry: day)
+                        .swipeActions(edge: .trailing, allowsFullSwipe: true) {
+                            Button {
+                                deleteRow(for: day.dateIndex)
+                            } label: {
+                                Label("Delete", systemSymbol: .pencil)
+                            }
+                            .tint(.purple)
+                        }
                 }
             }
             .navigationTitle("History")
             .navigationBarTitleDisplayMode(.large)
         }
     }
+    
+    private func deleteRow(for dateIndex: Int) {
+        storage.removeMeasurements(for: dateIndex)
+    }
 }
 
 struct HistoryList_Previews: PreviewProvider {