Add CSV export for days

Add export function
2025-01-31 13:37:44 +01:00 · 2025-01-31 13:06:11 +01:00
13 changed files with 362 additions and 19 deletions
--- a/TempTrack.xcodeproj/project.pbxproj
+++ b/TempTrack.xcodeproj/project.pbxproj
@ -47,6 +47,10 @@
 		E2E69B622A4D7C3100C6035E /* BluetoothScanner.swift in Sources */ = {isa = PBXBuildFile; fileRef = E2E69B612A4D7C3100C6035E /* BluetoothScanner.swift */; };
 		E2E69B662A4DA48B00C6035E /* BluetoothDevice.swift in Sources */ = {isa = PBXBuildFile; fileRef = E2E69B652A4DA48B00C6035E /* BluetoothDevice.swift */; };
 		E2E69B682A529FA800C6035E /* TransferHandler.swift in Sources */ = {isa = PBXBuildFile; fileRef = E2E69B672A529FA800C6035E /* TransferHandler.swift */; };
+		E2FD1D6B2D4CE64300B48627 /* ZIPFoundation in Frameworks */ = {isa = PBXBuildFile; productRef = E2FD1D6A2D4CE64300B48627 /* ZIPFoundation */; };
+		E2FD1D6F2D4CE83700B48627 /* ExportSheet.swift in Sources */ = {isa = PBXBuildFile; fileRef = E2FD1D6E2D4CE83700B48627 /* ExportSheet.swift */; };
+		E2FD1D712D4CF5EB00B48627 /* CsvConverter.swift in Sources */ = {isa = PBXBuildFile; fileRef = E2FD1D702D4CF5E700B48627 /* CsvConverter.swift */; };
+		E2FD1D732D4CF82100B48627 /* ShareCsvSheet.swift in Sources */ = {isa = PBXBuildFile; fileRef = E2FD1D722D4CF81900B48627 /* ShareCsvSheet.swift */; };
 /* End PBXBuildFile section */

 /* Begin PBXFileReference section */
@ -90,6 +94,9 @@
 		E2E69B612A4D7C3100C6035E /* BluetoothScanner.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BluetoothScanner.swift; sourceTree = "<group>"; };
 		E2E69B652A4DA48B00C6035E /* BluetoothDevice.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BluetoothDevice.swift; sourceTree = "<group>"; };
 		E2E69B672A529FA800C6035E /* TransferHandler.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TransferHandler.swift; sourceTree = "<group>"; };
+		E2FD1D6E2D4CE83700B48627 /* ExportSheet.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ExportSheet.swift; sourceTree = "<group>"; };
+		E2FD1D702D4CF5E700B48627 /* CsvConverter.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CsvConverter.swift; sourceTree = "<group>"; };
+		E2FD1D722D4CF81900B48627 /* ShareCsvSheet.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ShareCsvSheet.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */

 /* Begin PBXFrameworksBuildPhase section */
@ -99,6 +106,7 @@
 			files = (
 				88404DD02A2E718B00D30244 /* BinaryCodable in Frameworks */,
 				88CDE0662A25D08F00114294 /* SFSafeSymbols in Frameworks */,
+				E2FD1D6B2D4CE64300B48627 /* ZIPFoundation in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@ -108,6 +116,7 @@
 		88404DD92A2F4DB100D30244 /* Storage */ = {
 			isa = PBXGroup;
 			children = (
+				E2FD1D702D4CF5E700B48627 /* CsvConverter.swift */,
 				88404DDA2A2F4DCA00D30244 /* MeasurementDailyCount.swift */,
 				88CDE0672A2698B400114294 /* PersistentStorage.swift */,
 				E2A553F82A399F58005204C3 /* Log.swift */,
@ -191,6 +200,8 @@
 				E2A553FE2A3A1024005204C3 /* DayView.swift */,
 				E2A554042A4ADA93005204C3 /* TransferView.swift */,
 				E2E69B5F2A4CD48F00C6035E /* IconAndTextView.swift */,
+				E2FD1D6E2D4CE83700B48627 /* ExportSheet.swift */,
+				E2FD1D722D4CF81900B48627 /* ShareCsvSheet.swift */,
 			);
 			path = Views;
 			sourceTree = "<group>";
@ -242,6 +253,7 @@
 			packageProductDependencies = (
 				88CDE0652A25D08F00114294 /* SFSafeSymbols */,
 				88404DCF2A2E718B00D30244 /* BinaryCodable */,
+				E2FD1D6A2D4CE64300B48627 /* ZIPFoundation */,
 			);
 			productName = TempTrack;
 			productReference = 88CDE04B2A2508E900114294 /* TempTrack.app */;
@ -255,7 +267,7 @@
 			attributes = {
 				BuildIndependentTargetsInParallel = 1;
 				LastSwiftUpdateCheck = 1430;
-				LastUpgradeCheck = 1430;
+				LastUpgradeCheck = 1620;
 				TargetAttributes = {
 					88CDE04A2A2508E800114294 = {
 						CreatedOnToolsVersion = 14.3;
@ -274,6 +286,7 @@
 			packageReferences = (
 				88CDE0642A25D08F00114294 /* XCRemoteSwiftPackageReference "SFSafeSymbols" */,
 				88404DCE2A2E718B00D30244 /* XCRemoteSwiftPackageReference "BinaryCodable" */,
+				E2FD1D692D4CE64300B48627 /* XCRemoteSwiftPackageReference "ZIPFoundation" */,
 			);
 			productRefGroup = 88CDE04C2A2508E900114294 /* Products */;
 			projectDirPath = "";
@ -305,6 +318,7 @@
 				E2A554142A4C9C96005204C3 /* DeviceDataRequest.swift in Sources */,
 				88CDE0512A2508E900114294 /* ContentView.swift in Sources */,
 				88CDE0702A28AEA300114294 /* TemperatureMeasurement.swift in Sources */,
+				E2FD1D732D4CF82100B48627 /* ShareCsvSheet.swift in Sources */,
 				E2A554162A4C9D2E005204C3 /* DeviceDataResetRequest.swift in Sources */,
 				88404DE12A31CA6B00D30244 /* BluetoothResponseType.swift in Sources */,
 				88404DDF2A2F68E100D30244 /* TemperatureDayOverview.swift in Sources */,
@ -316,6 +330,7 @@
 				88CDE0682A2698B400114294 /* PersistentStorage.swift in Sources */,
 				88404DE92A31F7D500D30244 /* Data+Extensions.swift in Sources */,
 				88404DE52A31F23E00D30244 /* UInt16+Extensions.swift in Sources */,
+				E2FD1D6F2D4CE83700B48627 /* ExportSheet.swift in Sources */,
 				88404DD42A2F0DB100D30244 /* Date+Extensions.swift in Sources */,
 				88CDE0762A28AF0900114294 /* TemperatureValue.swift in Sources */,
 				E2E69B622A4D7C3100C6035E /* BluetoothScanner.swift in Sources */,
@ -329,6 +344,7 @@
 				88404DD22A2F0D8F00D30244 /* Double+Extensions.swift in Sources */,
 				E2A554102A4C9C68005204C3 /* DeviceRequest.swift in Sources */,
 				E253A9222A2B39B700EC6B28 /* Color+Extensions.swift in Sources */,
+				E2FD1D712D4CF5EB00B48627 /* CsvConverter.swift in Sources */,
 				E2E69B682A529FA800C6035E /* TransferHandler.swift in Sources */,
 				88404DEB2A37BE3000D30244 /* DeviceWakeCause.swift in Sources */,
 				88CDE06D2A28A92000114294 /* DeviceInfo.swift in Sources */,
@ -347,6 +363,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = YES;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++20";
@ -379,6 +396,7 @@
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_NO_COMMON_BLOCKS = YES;
@ -407,6 +425,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = YES;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++20";
@ -439,6 +458,7 @@
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu11;
 				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
@ -559,6 +579,14 @@
 				minimumVersion = 4.0.0;
 			};
 		};
+		E2FD1D692D4CE64300B48627 /* XCRemoteSwiftPackageReference "ZIPFoundation" */ = {
+			isa = XCRemoteSwiftPackageReference;
+			repositoryURL = "https://github.com/weichsel/ZIPFoundation.git";
+			requirement = {
+				kind = upToNextMajorVersion;
+				minimumVersion = 0.9.19;
+			};
+		};
 /* End XCRemoteSwiftPackageReference section */

 /* Begin XCSwiftPackageProductDependency section */
@ -572,6 +600,11 @@
 			package = 88CDE0642A25D08F00114294 /* XCRemoteSwiftPackageReference "SFSafeSymbols" */;
 			productName = SFSafeSymbols;
 		};
+		E2FD1D6A2D4CE64300B48627 /* ZIPFoundation */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = E2FD1D692D4CE64300B48627 /* XCRemoteSwiftPackageReference "ZIPFoundation" */;
+			productName = ZIPFoundation;
+		};
 /* End XCSwiftPackageProductDependency section */
 	};
 	rootObject = 88CDE0432A2508E800114294 /* Project object */;
--- a/TempTrack.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
+++ b/TempTrack.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
@ -1,4 +1,5 @@
 {
+  "originHash" : "4621142a3796c58656af35df5ada2f08fe05daffacc1a501de8eebaaafda9339",
  "pins" : [
    {
      "identity" : "binarycodable",
@ -17,7 +18,16 @@
        "revision" : "7cca2d60925876b5953a2cf7341cd80fbeac983c",
        "version" : "4.1.1"
      }
+    },
+    {
+      "identity" : "zipfoundation",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/weichsel/ZIPFoundation.git",
+      "state" : {
+        "revision" : "02b6abe5f6eef7e3cbd5f247c5cc24e246efcfe0",
+        "version" : "0.9.19"
+      }
    }
  ],
-  "version" : 2
+  "version" : 3
 }
--- a/TempTrack.xcodeproj/project.xcworkspace/xcuserdata/ch.xcuserdatad/UserInterfaceState.xcuserstate
+++ b/TempTrack.xcodeproj/project.xcworkspace/xcuserdata/ch.xcuserdatad/UserInterfaceState.xcuserstate
--- a/TempTrack/Connection/BluetoothDevice.swift
+++ b/TempTrack/Connection/BluetoothDevice.swift
@ -8,6 +8,8 @@ protocol BluetoothDeviceDelegate: AnyObject {

 actor BluetoothDevice: NSObject, ObservableObject {

+    private let storage: PersistentStorage!
+
    let peripheral: CBPeripheral!

    private let characteristic: CBCharacteristic!
@ -24,9 +26,10 @@ actor BluetoothDevice: NSObject, ObservableObject {
        self.delegate = delegate
    }

-    init(peripheral: CBPeripheral, characteristic: CBCharacteristic) {
+    init(storage: PersistentStorage, peripheral: CBPeripheral, characteristic: CBCharacteristic) {
        self.peripheral = peripheral
        self.characteristic = characteristic
+        self.storage = storage
        super.init()
        
        peripheral.delegate = self
@ -35,6 +38,7 @@ actor BluetoothDevice: NSObject, ObservableObject {
    override init() {
        self.peripheral = nil
        self.characteristic = nil
+        self.storage = nil
        super.init()
    }

@ -46,7 +50,6 @@ actor BluetoothDevice: NSObject, ObservableObject {
        }
        lastDeviceInfo = info
        delegate?.bluetoothDevice(didUpdate: info)
-        #warning("Don't use global variable")
        storage.save(deviceInfo: info)
    }

--- a/TempTrack/Connection/BluetoothScanner.swift
+++ b/TempTrack/Connection/BluetoothScanner.swift
@ -15,6 +15,8 @@ final class BluetoothScanner: NSObject, CBCentralManagerDelegate, ObservableObje

    private let characteristicUUID = CBUUID(string: "22071991-cccc-cccc-cccc-000000000002")

+    let storage: PersistentStorage!
+
    private var manager: CBCentralManager! = nil

    @Published
@ -71,7 +73,8 @@ final class BluetoothScanner: NSObject, CBCentralManagerDelegate, ObservableObje
        }
    }

-    override init() {
+    init(storage: PersistentStorage) {
+        self.storage = storage
        connectionState = .noDeviceFound
        super.init()
        self.manager = CBCentralManager(delegate: self, queue: nil)
@ -200,7 +203,7 @@ extension BluetoothScanner: CBPeripheralDelegate {
            return
        }

-        configuredDevice = .init(peripheral: peripheral, characteristic: desiredCharacteristic)
+        configuredDevice = .init(storage: storage, peripheral: peripheral, characteristic: desiredCharacteristic)
        Task {
            await configuredDevice?.set(delegate: self)
        }
--- a/TempTrack/ContentView.swift
+++ b/TempTrack/ContentView.swift
@ -271,7 +271,7 @@ struct ContentView: View {
 struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        let storage = PersistentStorage(lastMeasurements: TemperatureMeasurement.mockData)
-        ContentView(scanner: .init())
+        ContentView(scanner: .init(storage: storage))
            .environmentObject(storage)
    }
 }
--- a/TempTrack/Storage/CsvConverter.swift
+++ b/TempTrack/Storage/CsvConverter.swift
@ -0,0 +1,40 @@
+import Foundation
+
+struct CsvConverter {
+
+    private let dateFormatter: DateFormatter
+
+    init() {
+        dateFormatter = .init()
+        dateFormatter.dateStyle = .short
+        dateFormatter.timeStyle = .medium
+    }
+
+    private var header: String {
+        "Index;Date;Sensor 0;Sensor 1\n"
+    }
+
+    func convert(measurements: [TemperatureMeasurement]) -> String {
+        header + measurements.enumerated().map { (index, measurement) -> String in
+            let parts: [String] = [
+                "\(index)",
+                dateFormatter.string(from: measurement.date),
+                convert(measurement.sensor0),
+                convert(measurement.sensor1)
+            ]
+
+            return parts.joined(separator: ";")
+        }.joined(separator: "\n")
+    }
+
+    private func convert(_ value: TemperatureValue) -> String {
+        switch value {
+        case .notFound:
+            return ""
+        case .invalidMeasurement:
+            return "?"
+        case .value(let value):
+            return String(format:"%.1f", value)
+        }
+    }
+}
--- a/TempTrack/Storage/PersistentStorage.swift
+++ b/TempTrack/Storage/PersistentStorage.swift
@ -2,6 +2,7 @@ import Foundation
 import Combine
 import BinaryCodable
 import SwiftUI
+import ZIPFoundation

 final class PersistentStorage: ObservableObject {

@ -353,6 +354,34 @@ final class PersistentStorage: ObservableObject {
        defer { updateTransferCount() }
        return save(data: data, date: date, in: "transfers")
    }
+
+    // MARK: Export
+
+    private var zipArchive: URL {
+        FileManager.default.temporaryDirectory.appendingPathComponent("data.zip")
+    }
+
+    func createZip() throws -> URL {
+        // Define the destination zip file path
+        let archive = zipArchive
+
+        // Create the zip file
+        try FileManager.default.zipItem(
+            at: PersistentStorage.documentDirectory,
+            to: archive,
+            shouldKeepParent: false,
+            compressionMethod: .deflate)
+        return archive
+    }
+
+    func removeZipArchive() throws {
+        let archive = zipArchive
+        // Remove existing zip file if it exists
+        if FileManager.default.fileExists(atPath: archive.path) {
+            print("Removing archive file")
+            try FileManager.default.removeItem(at: archive)
+        }
+    }
 }

 private extension Array where Element == TemperatureMeasurement {
--- a/TempTrack/TempTrackApp.swift
+++ b/TempTrack/TempTrackApp.swift
@ -1,14 +1,25 @@
 import SwiftUI

-let storage = PersistentStorage()

-private let scanner = BluetoothScanner()
-
-private let transfer = TransferHandler()

@main
 struct TempTrackApp: App {

+    @StateObject
+    private var storage: PersistentStorage
+
+    @StateObject
+    private var scanner: BluetoothScanner
+
+    @StateObject
+    private var transfer = TransferHandler()
+
+    init() {
+        let storage = PersistentStorage()
+        self._scanner = .init(wrappedValue: .init(storage: storage))
+        self._storage = .init(wrappedValue: storage)
+    }
+
    var body: some Scene {
        WindowGroup {
            ContentView(scanner: scanner)
--- a/TempTrack/Views/DayView.swift
+++ b/TempTrack/Views/DayView.swift
@ -1,4 +1,5 @@
 import SwiftUI
+import SFSafeSymbols

 private let df: DateFormatter = {
    let df = DateFormatter()
@ -21,19 +22,45 @@ struct DayView: View {
    @EnvironmentObject
    var storage: PersistentStorage

+    @State
+    private var showShareSheet = false
+
+    private let title: String
+
+    init(dateIndex: Int) {
+        self.dateIndex = dateIndex
+        self.title = Date(dateIndex: dateIndex)
+            .formatted(date: .abbreviated, time: .omitted)
+    }
+
    var entries: [TemperatureMeasurement] {
        storage.loadMeasurements(for: dateIndex)
    }

    var body: some View {
-        TemperatureDayOverview(points: entries)
-        List(entries) { entry in
-            HStack {
-                Text(df.string(from: entry.date))
-                Spacer()
-                Text(entry.displayText)
+        VStack {
+            TemperatureDayOverview(points: entries)
+            List(entries) { entry in
+                HStack {
+                    Text(entry.date.formatted(date: .omitted, time: .standard))
+                    Spacer()
+                    Text(entry.displayText)
+                }
            }
        }
+        .navigationTitle(title)
+        .navigationBarTitleDisplayMode(.large)
+        .toolbar {
+            ToolbarItem {
+                Button(action: { showShareSheet = true }) {
+                    Label("Export", systemSymbol: .arrowUpDoc)
+                }
+            }
+        }
+        .sheet(isPresented: $showShareSheet) {
+            ShareCsvSheet(isPresented: $showShareSheet,
+                          measurements: entries)
+        }
    }
 }

--- a/TempTrack/Views/ExportSheet.swift
+++ b/TempTrack/Views/ExportSheet.swift
@ -0,0 +1,82 @@
+import SwiftUI
+
+struct ExportSheet: View {
+
+    @Binding var isPresented: Bool
+
+    @State
+    private var isCreatingArchive = false
+
+    @State var url: URL?
+
+    @State var error: String?
+
+    @EnvironmentObject
+    private var storage: PersistentStorage
+
+    var body: some View {
+        VStack {
+            Text("Export")
+                .font(.title)
+            Text("Create a zip file of all stored data and share it.")
+            if isCreatingArchive {
+                ProgressView()
+                Text("Creating archive...")
+            }
+            if let error {
+                Text(error)
+                    .foregroundStyle(.red)
+            }
+            Spacer()
+            Button("Create archive", action: createArchive)
+                .disabled(isCreatingArchive)
+                .padding()
+            if let url {
+                ShareLink(item: url) {
+                    Label("Share archive", systemImage: "square.and.arrow.up")
+                }
+                .padding()
+                Button("Delete archive", action: deleteArchive)
+                    .padding()
+            }
+            Button("Dismiss", action: { isPresented = false })
+        }
+        .padding()
+    }
+
+    private func createArchive() {
+        guard !isCreatingArchive else {
+            return
+        }
+        isCreatingArchive = true
+        DispatchQueue.main.async {
+            do {
+                let url = try storage.createZip()
+                DispatchQueue.main.async {
+                    self.url = url
+                    self.error = nil
+                    self.isCreatingArchive = false
+                }
+            } catch {
+                DispatchQueue.main.async {
+                    self.error = "Failed to create archive: \(error.localizedDescription)"
+                    self.isCreatingArchive = false
+                }
+            }
+        }
+    }
+
+    private func deleteArchive() {
+        do {
+            try storage.removeZipArchive()
+            self.error = nil
+            self.url = nil
+        } catch {
+            self.error = "Failed to delete archive: \(error.localizedDescription)"
+        }
+    }
+}
+
+#Preview {
+    ExportSheet(isPresented: .constant(true))
+}
--- a/TempTrack/Views/HistoryList.swift
+++ b/TempTrack/Views/HistoryList.swift
@ -1,10 +1,14 @@
 import SwiftUI
+import SFSafeSymbols

 struct HistoryList: View {
    
    @EnvironmentObject
    var storage: PersistentStorage

+    @State
+    private var showExportSheet = false
+
    var body: some View {
        NavigationView {
            List(storage.dailyMeasurementCounts) { day in
@ -25,6 +29,16 @@ struct HistoryList: View {
            }
            .navigationTitle("History")
            .navigationBarTitleDisplayMode(.large)
+            .toolbar {
+                ToolbarItem {
+                    Button(action: { showExportSheet = true }) {
+                        Label("Export", systemSymbol: .arrowUpDoc)
+                    }
+                }
+            }
+            .sheet(isPresented: $showExportSheet) {
+                ExportSheet(isPresented: $showExportSheet)
+            }
        }
    }
    
--- a/TempTrack/Views/ShareCsvSheet.swift
+++ b/TempTrack/Views/ShareCsvSheet.swift
@ -0,0 +1,91 @@
+import SwiftUI
+
+struct ShareCsvSheet: View {
+
+    @Binding var isPresented: Bool
+
+    @State
+    private var isCreatingFile = false
+
+    @State var url: URL?
+
+    @State var error: String?
+
+    @EnvironmentObject
+    private var storage: PersistentStorage
+
+    let measurements: [TemperatureMeasurement]
+
+    var body: some View {
+        VStack {
+            Text("Export")
+                .font(.title)
+            Text("Create a CSV file of all measurements for the day")
+            if isCreatingFile {
+                ProgressView()
+                Text("Creating file...")
+            }
+            if let error {
+                Text(error)
+                    .foregroundStyle(.red)
+            }
+            Spacer()
+            Button("Create file", action: createFile)
+                .disabled(isCreatingFile)
+                .padding()
+            if let url {
+                ShareLink(item: url) {
+                    Label("Share file", systemImage: "square.and.arrow.up")
+                }
+                .padding()
+                Button("Delete file", action: deleteFile)
+                    .padding()
+            }
+            Button("Dismiss", action: { isPresented = false })
+        }
+        .padding()
+    }
+
+    private func createFile() {
+        guard !isCreatingFile else {
+            return
+        }
+        isCreatingFile = true
+        DispatchQueue.main.async {
+            do {
+                let url = FileManager.default.temporaryDirectory.appendingPathComponent("export.csv")
+                let converter = CsvConverter()
+                let content = converter.convert(measurements: measurements)
+                try content.write(to: url, atomically: true, encoding: .utf8)
+                DispatchQueue.main.async {
+                    self.url = url
+                    self.error = nil
+                    self.isCreatingFile = false
+                }
+            } catch {
+                DispatchQueue.main.async {
+                    self.error = "Failed to save file: \(error.localizedDescription)"
+                    self.isCreatingFile = false
+                }
+            }
+        }
+    }
+
+    private func deleteFile() {
+        guard let url else {
+            return
+        }
+        do {
+            try FileManager.default.removeItem(at: url)
+            self.error = nil
+            self.url = nil
+        } catch {
+            self.error = "Failed to delete archive: \(error.localizedDescription)"
+        }
+    }
+}
+
+#Preview {
+    ShareCsvSheet(isPresented: .constant(true),
+                  measurements: [])
+}
Author	SHA1	Message	Date
Christoph Hagen	e9f6bafe33	Add CSV export for days	2025-01-31 13:37:44 +01:00
Christoph Hagen	00e4da3f21	Add export function	2025-01-31 13:06:11 +01:00