USB-Meter
/
USB Meter
/
Views
/
Sidebar
/
SidebarList
/
Sections
/
SidebarUSBMetersSectionView.swift
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// SidebarUSBMetersSectionView.swift |
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// USB Meter |
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// |
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import SwiftUI |
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import CoreBluetooth |
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struct SidebarUSBMetersSectionView: View {
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let meters: [AppData.MeterSummary] |
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let managerState: CBManagerState |
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let hasLiveMeters: Bool |
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let scanStartedAt: Date? |
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let now: Date |
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let noDevicesHelpDelay: TimeInterval |
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var body: some View {
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Section(header: usbSectionHeader) {
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if meters.isEmpty {
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Text(devicesEmptyStateText) |
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.font(.footnote) |
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.foregroundColor(.secondary) |
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.frame(maxWidth: .infinity, alignment: .leading) |
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.padding(18) |
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.meterCard( |
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tint: isWaitingForFirstDiscovery ? .blue : .secondary, |
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fillOpacity: 0.14, |
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strokeOpacity: 0.20 |
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) |
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} else {
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ForEach(meters) { meterSummary in
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if let meter = meterSummary.meter {
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NavigationLink(destination: MeterView().environmentObject(meter)) {
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MeterRowView() |
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.environmentObject(meter) |
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} |
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.buttonStyle(.plain) |
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} else {
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NavigationLink(destination: MeterDetailView(meterSummary: meterSummary)) {
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MeterCardView(meterSummary: meterSummary) |
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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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} |
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private var isWaitingForFirstDiscovery: Bool {
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guard managerState == .poweredOn else {
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return false |
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} |
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guard hasLiveMeters == false else {
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return false |
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} |
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guard let scanStartedAt else {
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return false |
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} |
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return now.timeIntervalSince(scanStartedAt) < noDevicesHelpDelay |
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} |
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private var devicesEmptyStateText: String {
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if isWaitingForFirstDiscovery {
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return "Scanning for nearby supported meters..." |
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} |
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return "No meters yet. Nearby supported meters will appear here and remain available after they disappear." |
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} |
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private var usbSectionHeader: some View {
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HStack(alignment: .firstTextBaseline) {
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VStack(alignment: .leading, spacing: 2) {
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Text("USB & Known Meters")
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.font(.headline) |
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if meters.isEmpty == false {
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Text(sectionSubtitleText) |
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.font(.caption) |
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.foregroundColor(.secondary) |
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.lineLimit(1) |
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} |
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} |
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Spacer() |
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Text("\(meters.count)")
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.font(.caption.weight(.bold)) |
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.padding(.horizontal, 10) |
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.padding(.vertical, 6) |
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.meterCard(tint: .blue, fillOpacity: 0.18, strokeOpacity: 0.24, cornerRadius: 999) |
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} |
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} |
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private var sectionSubtitleText: String {
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switch (liveMeterCount, offlineMeterCount) {
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case let (live, offline) where live > 0 && offline > 0: |
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return "\(live) live • \(offline) stored" |
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case let (live, _) where live > 0: |
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return "\(live) live meter\(live == 1 ? "" : "s")" |
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case let (_, offline) where offline > 0: |
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return "\(offline) known meter\(offline == 1 ? "" : "s")" |
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default: |
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return "" |
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} |
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} |
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private var liveMeterCount: Int {
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meters.filter { $0.meter != nil }.count
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} |
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private var offlineMeterCount: Int {
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max(0, meters.count - liveMeterCount) |
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} |
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} |