Copy text after selection from "Choose" list

Using Swift
1

I am a Swift first timer and very much a novice coder. I am trying to adapt the ‘Choose Your Own Story’ app which is here: Choose Your Own Story | Apple Developer Documentation

I want to be able to navigate between the ‘Subject’ page and the ‘Comments’ pages as it already does but when I select an item on the ‘Comments Page’, instead of it just navigating to page 3 as it currently does, I want it to actually copy the text to the clipboard (“Subject 2 Comment A”, for example) so that I can paste that text into a separate document.

Can someone help me out please?

I am not sure how much of this code I need to include, so I have added the lot. Sorry if it is too much!

Many thanks.

// MyStory

import SwiftUI
let story = Story(pages: [
    StoryPage( // 0
        """
        Subjects...
        """,
        choices: [
            Choice(text: "Subject 1...", destination: 1),
            Choice(text: "Subject 2...", destination: 2),
        ]
    ),
    StoryPage( // 1
        """
        Comments 1...
        """,
        choices:
            [
             Choice(text: "Return to subject list...", destination: 0),
             Choice(text: "Subject 1 Comment A. ", destination: 3),
             Choice(text: "Subject 1 Comment B. ", destination: 3),
        ]
    ),
    StoryPage( // 2
        """
        Comments 2...
        """,
        choices: [
            Choice(text: "Return to subject list...", destination: 0),
            Choice(text: "Subject 2 Comment A. ", destination: 3),
            Choice(text: "Subject 2 Comment B. ", destination: 3),
        ]
    ),
    StoryPage( // 3
        """
        Comment copied to clipboard....
        """,
        choices: []
    ),
])


// StoryApp

import SwiftUI
@main
struct StoryApp: App {
    var body: some Scene {
        WindowGroup {
            StoryView()
        }
    }
}

// StoryModels

struct Story {
    let pages: [StoryPage]

    subscript(_ pageIndex: Int) -> StoryPage {
        if pageIndex == 3 // Added as a debugging test
        {let _ = print("Comment copied!")}
        return pages[pageIndex]
    }
}
struct StoryPage {
    let text: String
    let choices: [Choice]
    
    init(_ text: String, choices: [Choice]) {
        self.text = text
        self.choices = choices
    }
}
struct Choice {
    let text: String
    let destination: Int
}


// StoryPageView

import SwiftUI

struct StoryPageView: View {
    let story: Story
    let pageIndex: Int

    var body: some View {
   VStack{
    ScrollView {
        Text(story[pageIndex].text)
                ForEach(story[pageIndex].choices, id: \Choice.text) { choice in
                    NavigationLink(destination: StoryPageView(story: story, pageIndex: choice.destination)) {
                  Text(choice.text)
                          .background(Color.gray.opacity(0.25))
                    }
                    }
                }
           .navigationTitle("Page \(pageIndex)")
        }
    }
}
struct NonlinearStory_Previews: PreviewProvider {
    static var previews: some View {
        StoryPageView(story: story, pageIndex: 0)
    }
}


// StoryView

import SwiftUI

struct StoryView: View {
    var body: some View {
        NavigationStack {
            StoryPageView(story: story, pageIndex: 0)
        }
    }
}

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