ConfigurableWidget1.swift

import WidgetKit
import SwiftUI

struct RandomNumberWidgetProvider: TimelineProvider {
    func placeholder(in context: Context) -> RandomNumberWidgetEntry {
        RandomNumberWidgetEntry(date: Date(), number: 42)
    }

    func getSnapshot(in context: Context, completion: @escaping (RandomNumberWidgetEntry) -> ()) {
        let entry = RandomNumberWidgetEntry(date: Date(), number: getRandomNumber())
        completion(entry)
    }

    func getTimeline(in context: Context, completion: @escaping (Timeline<RandomNumberWidgetEntry>) -> ()) {
        var entries: [RandomNumberWidgetEntry] = []

        let currentDate = Date()
        for hourOffset in 0 ..< 5 {
            let entryDate = Calendar.current.date(byAdding: .hour, value: hourOffset, to: currentDate)!
            let entry = RandomNumberWidgetEntry(date: entryDate, number: getRandomNumber())
            entries.append(entry)
        }

        let timeline = Timeline(entries: entries, policy: .atEnd)
        completion(timeline)
    }
    
    private func getRandomNumber() -> Int {
        Int.random(in: 1...100)
    }
}

struct RandomNumberWidgetEntry: TimelineEntry {
    let date: Date
    let number: Int
}

struct RandomNumberWidgetEntryView : View {
    var entry: RandomNumberWidgetProvider.Entry

    var body: some View {
        VStack {
            Text("\(entry.number)")
                .font(.largeTitle)
            
            Text(entry.date, style: .time)
        }
    }
}

@main
struct Widgets: Widget {
    let kind: String = "Widgets"

    var body: some WidgetConfiguration {
        StaticConfiguration(kind: kind, provider: RandomNumberWidgetProvider()) { entry in
            RandomNumberWidgetEntryView(entry: entry)
        }
        .configurationDisplayName("Random Number Widget")
        .description("This widget shows random number")
    }
}