Make iconName optional in UpdateViewModel

@@ -113,20 +113,20 @@
            return "Update Failed"
        }
    }
    
    var iconName: String {
    var iconName: String? {
        switch state {
        case .idle:
            return ""
            return nil
        case .permissionRequest:
            return "questionmark.circle"
        case .checking:
            return "arrow.triangle.2.circlepath"
        case .updateAvailable:
            return "arrow.down.circle.fill"
        case .downloading, .extracting:
            return ""
            return nil
        case .readyToInstall:
            return "checkmark.circle.fill"
        case .installing:
            return "gear"

@@ -26,21 +26,25 @@
        case .extracting(let extracting):
            ProgressRingView(progress: extracting.progress)
            
        case .checking, .installing:
            Image(systemName: model.iconName)
                .rotationEffect(.degrees(rotationAngle))
                .onAppear {
                    withAnimation(.linear(duration: 2.5).repeatForever(autoreverses: false)) {
                        rotationAngle = 360
            if let iconName = model.iconName {
                Image(systemName: iconName)
                    .rotationEffect(.degrees(rotationAngle))
                    .onAppear {
                        withAnimation(.linear(duration: 2.5).repeatForever(autoreverses: false)) {
                            rotationAngle = 360
                        }
                    }
                }
                .onDisappear {
                    rotationAngle = 0
                }
                    .onDisappear {
                        rotationAngle = 0
                    }
            }
            
        default:
            Image(systemName: model.iconName)
            if let iconName = model.iconName {
                Image(systemName: iconName)
            }
        }
    }
}

@@ -55,37 +55,8 @@

class UpdateViewModel: ObservableObject {
    @Published var state: UpdateState = .idle
    
    var stateTooltip: String {
        switch state {
        case .idle:
            return ""
        case .permissionRequest:
            return "Update permission required"
        case .checking:
            return "Checking for updates…"
        case .updateAvailable(let update):
            return "Update available: \(update.appcastItem.displayVersionString)"
        case .downloading(let download):
            if let expectedLength = download.expectedLength, expectedLength > 0 {
                let progress = Double(download.progress) / Double(expectedLength)
                return String(format: "Downloading %.0f%%…", progress * 100)
            }
            return "Downloading…"
        case .extracting(let extracting):
            return String(format: "Preparing %.0f%%…", extracting.progress * 100)
        case .readyToInstall:
            return "Ready to install"
        case .installing:
            return "Installing…"
        case .notFound:
            return "No updates found"
        case .error(let err):
            return err.error.localizedDescription
        }
    }
    
    var text: String {
        switch state {
        case .idle:
            return ""
@@ -108,10 +79,10 @@
        case .installing:
            return "Installing…"
        case .notFound:
            return "No Updates Available"
        case .error:
            return "Update Failed"
        case .error(let err):
            return err.error.localizedDescription
        }
    }
    
    var iconName: String? {

@@ -39,7 +39,7 @@
            .foregroundColor(model.foregroundColor)
            .contentShape(Capsule())
        }
        .buttonStyle(.plain)
        .help(model.stateTooltip)
        .help(model.text)
    }
}