如何将用户编号转换为天、小时或秒swiftUI

import SwiftUI

struct ContentView: View {
    let userNumber: Int = 1234567890
    
    var body: some View {
        VStack {
            Text("User Number: \(userNumber)")
            
            Text("Converted to Days: \(convertToDays())")
            
            Text("Converted to Hours: \(convertToHours())")
            
            Text("Converted to Seconds: \(convertToSeconds())")
        }
    }
    
    func convertToDays() -> Int {
        let date = Date(timeIntervalSince1970: TimeInterval(userNumber))
        let calendar = Calendar.current
        let components = calendar.dateComponents([.day], from: date)
        return components.day ?? 0
    }
    
    func convertToHours() -> Int {
        let date = Date(timeIntervalSince1970: TimeInterval(userNumber))
        let calendar = Calendar.current
        let components = calendar.dateComponents([.hour], from: date)
        return components.hour ?? 0
    }
    
    func convertToSeconds() -> Int {
        let date = Date(timeIntervalSince1970: TimeInterval(userNumber))
        let calendar = Calendar.current
        let components = calendar.dateComponents([.second], from: date)
        return components.second ?? 0
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}