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// |
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// ConsumptionMonitorView.swift |
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// USB Meter |
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// |
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import SwiftUI |
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import Charts |
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// MARK: - Shared helpers (file-private) |
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private func formattedDuration(_ duration: TimeInterval) -> String {
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let formatter = DateComponentsFormatter() |
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formatter.allowedUnits = duration >= 3600 ? [.hour, .minute] : [.minute, .second] |
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formatter.unitsStyle = .abbreviated |
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formatter.zeroFormattingBehavior = .pad |
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return formatter.string(from: max(duration, 0)) ?? "0m" |
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} |
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private func energyLabel(_ wattHours: Double) -> String {
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wattHours >= 1000 |
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? "\((wattHours / 1000).format(decimalDigits: 3)) kWh" |
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: "\(wattHours.format(decimalDigits: 2)) Wh" |
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} |
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@available(iOS 16, *) |
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private func consumptionChart(samples: [ConsumptionMonitorSample], tint: Color) -> some View {
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let duration = samples.last.map { $0.timestamp.timeIntervalSince(samples[0].timestamp) } ?? 0
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return Chart(samples) { sample in
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LineMark( |
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x: .value("Time", sample.timestamp),
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y: .value("W", sample.averagePowerWatts)
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) |
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.foregroundStyle(tint) |
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.interpolationMethod(.catmullRom) |
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} |
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.frame(height: 140) |
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.chartYScale(domain: .automatic(includesZero: false)) |
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.chartXAxis {
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if duration > 3600 {
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AxisMarks(values: .stride(by: .hour)) { _ in
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AxisGridLine() |
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AxisValueLabel(format: .dateTime.hour()) |
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} |
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} else {
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AxisMarks(values: .stride(by: .minute, count: 10)) { _ in
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AxisGridLine() |
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AxisValueLabel(format: .dateTime.hour(.defaultDigits(amPM: .omitted)).minute()) |
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} |
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} |
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} |
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.chartYAxis {
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AxisMarks { value in
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AxisGridLine() |
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AxisValueLabel {
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if let v = value.as(Double.self) {
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Text("\(v.format(decimalDigits: 1)) W")
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} |
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} |
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} |
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} |
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} |
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// MARK: - Main View |
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struct ConsumptionMonitorView: View {
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@EnvironmentObject private var appData: AppData |
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@State private var selectedMeterMACAddress: String? |
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@State private var selectedDeviceID: UUID? |
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@State private var discardConfirmationVisibility = false |
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let preferredMeterMACAddress: String? |
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init(preferredMeterMACAddress: String? = nil) {
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self.preferredMeterMACAddress = preferredMeterMACAddress |
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_selectedMeterMACAddress = State(initialValue: preferredMeterMACAddress) |
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} |
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var body: some View {
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ScrollView {
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VStack(spacing: 18) {
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if let session = activeSession {
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activeSessionCard(session) |
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liveMetricsCard(session) |
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} else {
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setupCard |
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} |
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savedSessionsList |
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} |
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.padding() |
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} |
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.background( |
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LinearGradient( |
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colors: [.purple.opacity(0.16), Color.clear], |
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startPoint: .topLeading, |
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endPoint: .bottomTrailing |
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) |
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.ignoresSafeArea() |
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) |
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.navigationTitle("Consumption Monitor")
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.navigationBarTitleDisplayMode(.inline) |
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.confirmationDialog( |
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"Stop and discard this session?", |
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isPresented: $discardConfirmationVisibility, |
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titleVisibility: .visible |
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) {
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Button("Discard", role: .destructive) {
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if let session = activeSession {
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_ = appData.stopConsumptionMonitor(for: session.meterMACAddress, save: false) |
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} |
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} |
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Button("Cancel", role: .cancel) {}
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} message: {
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Text("The current session data will be lost and nothing will be saved.")
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} |
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} |
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// MARK: - Computed |
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private var liveMeterSummaries: [AppData.MeterSummary] {
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appData.meterSummaries.filter { $0.meter != nil }
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} |
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private var availableDevices: [ChargedDeviceSummary] {
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appData.deviceSummaries |
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} |
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private var activeSession: ConsumptionMonitorLiveSession? {
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let candidates = [selectedMeterMACAddress, preferredMeterMACAddress].compactMap { $0 }
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for mac in candidates {
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if let session = appData.consumptionMonitorSession(for: mac) { return session }
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} |
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for summary in liveMeterSummaries {
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if let session = appData.consumptionMonitorSession(for: summary.macAddress) { return session }
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} |
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return nil |
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} |
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private var selectedDevice: ChargedDeviceSummary? {
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guard let id = selectedDeviceID else { return nil }
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return availableDevices.first { $0.id == id }
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} |
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private var selectedMeterSummary: AppData.MeterSummary? {
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guard let mac = selectedMeterMACAddress else { return nil }
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return liveMeterSummaries.first { $0.macAddress == mac }
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} |
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private var savedSessions: [ConsumptionMonitorSessionSummary] {
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guard let id = selectedDeviceID else { return [] }
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return appData.chargedDeviceSummary(id: id)?.consumptionSessions.filter { !$0.isOpen } ?? []
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} |
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private var canStart: Bool {
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selectedDeviceID != nil && selectedMeterSummary != nil && activeSession == nil |
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} |
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// MARK: - Setup Card |
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private var setupCard: some View {
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MeterInfoCardView(title: "New Session", tint: .purple) {
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VStack(alignment: .leading, spacing: 12) {
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if liveMeterSummaries.isEmpty {
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Text("Connect a live meter first to start a consumption monitor session.")
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.font(.footnote) |
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.foregroundColor(.secondary) |
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} else {
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Text("Device")
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.font(.subheadline.weight(.semibold)) |
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if availableDevices.isEmpty {
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Text("No devices available. Add a device in the sidebar first.")
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.font(.caption) |
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.foregroundColor(.secondary) |
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} else {
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Picker("Device", selection: $selectedDeviceID) {
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Text("Select Device").tag(Optional<UUID>.none)
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ForEach(availableDevices) { device in
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Text(device.name).tag(Optional(device.id)) |
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} |
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} |
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.pickerStyle(.menu) |
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} |
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Text("Meter")
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.font(.subheadline.weight(.semibold)) |
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Picker("Meter", selection: $selectedMeterMACAddress) {
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Text("Select Meter").tag(Optional<String>.none)
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ForEach(liveMeterSummaries) { summary in
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Text(summary.displayName).tag(Optional(summary.macAddress)) |
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} |
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} |
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.pickerStyle(.menu) |
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Button("Start Session") {
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startSession() |
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} |
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.disabled(!canStart) |
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.buttonStyle(.borderedProminent) |
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.tint(.purple) |
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} |
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} |
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if activeSession == nil, selectedDevice != nil, selectedMeterSummary == nil {
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Text("Select a meter to begin.")
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.font(.caption) |
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.foregroundColor(.secondary) |
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} else if activeSession == nil, selectedMeterSummary != nil, selectedDevice == nil {
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Text("Select the device you want to monitor.")
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.font(.caption) |
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.foregroundColor(.secondary) |
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} else if activeSession == nil, canStart {
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Text("Samples are recorded every 60 seconds at a rate of 60 per hour.")
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.font(.caption) |
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.foregroundColor(.secondary) |
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} |
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} |
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} |
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// MARK: - Active Session Card |
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private func activeSessionCard(_ session: ConsumptionMonitorLiveSession) -> some View {
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MeterInfoCardView( |
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title: "Session Running", |
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infoMessage: "Samples are stored every 60 seconds. The session persists across app restarts until you stop it.", |
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tint: .purple |
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) {
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if let device = appData.chargedDeviceSummary(id: session.chargedDeviceID) {
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MeterInfoRowView(label: "Device", value: device.name) |
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} |
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if let summary = liveMeterSummaries.first(where: { $0.macAddress == session.meterMACAddress }) {
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MeterInfoRowView(label: "Meter", value: summary.displayName) |
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} |
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MeterInfoRowView(label: "Duration", value: formattedDuration(session.elapsedDuration)) |
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MeterInfoRowView(label: "Samples", value: "\(session.committedSampleCount) × 60 s") |
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MeterInfoRowView(label: "Total Energy", value: energyLabel(session.cumulativeEnergyWh)) |
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HStack(spacing: 12) {
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Button("Save & Stop") {
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_ = appData.stopConsumptionMonitor(for: session.meterMACAddress, save: true) |
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} |
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.disabled(session.committedSampleCount == 0) |
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Button("Discard") {
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discardConfirmationVisibility = true |
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} |
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.foregroundColor(.red) |
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} |
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.buttonStyle(.borderedProminent) |
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.tint(.purple) |
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} |
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} |
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// MARK: - Live Metrics Card |
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private func liveMetricsCard(_ session: ConsumptionMonitorLiveSession) -> some View {
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VStack(spacing: 18) {
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MeterInfoCardView(title: "Live Reading", tint: .indigo) {
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MeterInfoRowView(label: "Power", value: "\(session.currentPowerWatts.format(decimalDigits: 3)) W") |
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MeterInfoRowView(label: "Current", value: "\(session.currentCurrentAmps.format(decimalDigits: 3)) A") |
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MeterInfoRowView(label: "Voltage", value: "\(session.currentVoltageVolts.format(decimalDigits: 3)) V") |
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} |
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if session.committedSamples.count >= 2 {
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liveChartCard(session.committedSamples) |
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} |
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if session.cumulativeEnergyWh > 0 {
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projectionCard( |
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averagePowerWatts: session.cumulativeEnergyWh / max(session.elapsedDuration / 3600, 0.001), |
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totalEnergyWh: session.cumulativeEnergyWh |
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) |
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} |
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} |
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} |
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@ViewBuilder |
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private func liveChartCard(_ samples: [ConsumptionMonitorSample]) -> some View {
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if #available(iOS 16, *) {
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MeterInfoCardView(title: "Power Over Time", tint: .purple) {
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consumptionChart(samples: samples, tint: .purple) |
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} |
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} |
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} |
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// MARK: - Projections Card |
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private func projectionCard(averagePowerWatts: Double, totalEnergyWh: Double) -> some View {
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MeterInfoCardView(title: "Consumption Projection", tint: .teal) {
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MeterInfoRowView(label: "Average Power", value: "\(averagePowerWatts.format(decimalDigits: 3)) W") |
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MeterInfoRowView(label: "24 Hours", value: energyLabel(averagePowerWatts * 24)) |
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MeterInfoRowView(label: "7 Days", value: energyLabel(averagePowerWatts * 24 * 7)) |
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MeterInfoRowView(label: "30 Days", value: energyLabel(averagePowerWatts * 24 * 30)) |
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MeterInfoRowView(label: "1 Year", value: energyLabel(averagePowerWatts * 24 * 365)) |
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} |
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} |
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// MARK: - Saved Sessions List |
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@ViewBuilder |
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private var savedSessionsList: some View {
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if !savedSessions.isEmpty {
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MeterInfoCardView(title: "Saved Sessions", tint: .purple) {
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ForEach(savedSessions) { session in
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NavigationLink(destination: ConsumptionSessionDetailView(session: session)) {
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HStack {
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VStack(alignment: .leading, spacing: 2) {
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Text(session.startedAt, style: .date) |
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.font(.subheadline.weight(.semibold)) |
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Text("\(formattedDuration(session.duration)) · \(energyLabel(session.totalEnergyWh)) total")
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.font(.caption) |
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.foregroundColor(.secondary) |
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} |
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Spacer() |
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Image(systemName: "chevron.right") |
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.font(.caption.weight(.semibold)) |
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.foregroundColor(.secondary) |
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} |
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.padding(.vertical, 4) |
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} |
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.buttonStyle(.plain) |
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} |
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} |
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} |
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} |
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// MARK: - Actions |
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private func startSession() {
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guard let deviceID = selectedDeviceID, |
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let meterSummary = selectedMeterSummary, |
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let meter = meterSummary.meter else { return }
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_ = appData.startConsumptionMonitor(for: deviceID, on: meter) |
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} |
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} |
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// MARK: - Session Detail |
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struct ConsumptionSessionDetailView: View {
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@EnvironmentObject private var appData: AppData |
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let session: ConsumptionMonitorSessionSummary |
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@State private var deleteConfirmationVisibility = false |
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var body: some View {
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ScrollView {
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VStack(spacing: 18) {
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overviewCard |
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if session.averagePowerWatts > 0 {
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projectionCard |
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} |
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if session.samples.count >= 2 {
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chartCard |
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} |
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statsCard |
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} |
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.padding() |
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} |
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.background( |
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LinearGradient( |
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colors: [.purple.opacity(0.14), Color.clear], |
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startPoint: .topLeading, |
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endPoint: .bottomTrailing |
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) |
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.ignoresSafeArea() |
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) |
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.navigationTitle("Consumption Session")
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.navigationBarTitleDisplayMode(.inline) |
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.toolbar {
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ToolbarItem(placement: .destructiveAction) {
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Button(role: .destructive) {
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deleteConfirmationVisibility = true |
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} label: {
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Image(systemName: "trash") |
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} |
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} |
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} |
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.confirmationDialog("Delete this session?", isPresented: $deleteConfirmationVisibility, titleVisibility: .visible) {
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Button("Delete", role: .destructive) {
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_ = appData.deleteConsumptionSession(id: session.id, deviceID: session.chargedDeviceID) |
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} |
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Button("Cancel", role: .cancel) {}
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} |
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} |
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| 387 | ||
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// MARK: - Cards |
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| 390 |
private var overviewCard: some View {
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MeterInfoCardView(title: "Overview", tint: .purple) {
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MeterInfoRowView(label: "Started", value: session.startedAt.formatted(date: .abbreviated, time: .shortened)) |
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if let endedAt = session.endedAt {
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MeterInfoRowView(label: "Ended", value: endedAt.formatted(date: .abbreviated, time: .shortened)) |
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} |
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MeterInfoRowView(label: "Duration", value: formattedDuration(session.duration)) |
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MeterInfoRowView(label: "Samples", value: "\(session.sampleCount) × 60 s") |
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MeterInfoRowView(label: "Total Energy", value: energyLabel(session.totalEnergyWh)) |
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if let meterName = session.meterName {
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MeterInfoRowView(label: "Meter", value: meterName) |
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} |
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} |
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} |
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private var projectionCard: some View {
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MeterInfoCardView(title: "Consumption Projection", tint: .teal) {
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MeterInfoRowView(label: "Average Power", value: "\(session.averagePowerWatts.format(decimalDigits: 3)) W") |
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MeterInfoRowView(label: "24 Hours", value: energyLabel(session.projectedDailyEnergyWh)) |
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MeterInfoRowView(label: "7 Days", value: energyLabel(session.projectedWeeklyEnergyWh)) |
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MeterInfoRowView(label: "30 Days", value: energyLabel(session.projectedMonthlyEnergyWh)) |
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MeterInfoRowView(label: "1 Year", value: energyLabel(session.projectedYearlyEnergyWh)) |
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} |
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} |
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| 414 | ||
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private var statsCard: some View {
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MeterInfoCardView(title: "Statistics", tint: .indigo) {
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MeterInfoRowView(label: "Min Power", value: "\(session.minimumPowerWatts.format(decimalDigits: 3)) W") |
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MeterInfoRowView(label: "Max Power", value: "\(session.maximumPowerWatts.format(decimalDigits: 3)) W") |
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MeterInfoRowView(label: "Avg Current", value: "\(session.averageCurrentAmps.format(decimalDigits: 3)) A") |
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MeterInfoRowView(label: "Avg Voltage", value: "\(session.averageVoltageVolts.format(decimalDigits: 3)) V") |
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} |
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} |
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| 423 | ||
| 424 |
@ViewBuilder |
|
| 425 |
private var chartCard: some View {
|
|
| 426 |
if #available(iOS 16, *) {
|
|
| 427 |
MeterInfoCardView(title: "Power Over Time", tint: .purple) {
|
|
| 428 |
consumptionChart(samples: session.samples, tint: .purple) |
|
| 429 |
} |
|
| 430 |
} |
|
| 431 |
} |
|
| 432 |
} |