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public final class NetworkClient {
    private let session: URLSession = .shared

    public init() { }

    func executeRequest(request: URLRequest, completion: @escaping (Result<Data, Error>) -> Void) {
        session.dataTask(with: request) { (data, _, error) in
            if let error = error {
                completion(.failure(error))
                return

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.simultaneousGesture(DragGesture().onChanged({value in
    /// catch moving to category
    if self.allowSubCategoryDragging {
        let movingCategoryRight = self.page == 0 && self.nestedPages[self.page] == 2 && value.translation.width < 0
        let movingCategoryLeft = self.page == 1 && self.nestedPages[self.page] == 0 && value.translation.width > 0
        if movingCategoryRight || movingCategoryLeft{
            self.allowSubCategoryDragging = false
        }
        else{
            let westAsCanBe = self.nestedPages[self.page] == 0 && self.page == 0 && value.translation.width > 0

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.onPageChanged({ _ in
    self.allowSubCategoryDragging = true
})
.swipeInteractionArea(.allAvailable)
.simultaneousGesture(DragGesture().onChanged({value in
    /// catch moving to category
    if self.allowSubCategoryDragging {
        let movingCategoryRight = self.page == 0 && self.nestedPages[self.page] == 2 && value.translation.width < 0
        let movingCategoryLeft = self.page == 1 && self.nestedPages[self.page] == 0 && value.translation.width > 0
        if movingCategoryRight || movingCategoryLeft{

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struct YourLibraryView: View {

    @State var page: Int = 0 //// keeps track of which category index we are at
    @State var nestedPages: [Int] = [0, 0] /// keeps track of which sub category index we are at for each category
    @State var indicatorOffsets : [CGFloat] = [0,0] /// keepts track of indicator offsets for each category

    var data = Array(0..<2)
    var nestedData = Array(0..<3)

    var body: some View {

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struct MediaContentView: View {
    var colours : [Color] = [.red, .orange, .green, .pink, .purple, .yellow]
    var body: some View {
        ScrollView(.vertical, showsIndicators: true){
            ForEach(0..<10) {_ in
                HStack{
                    Rectangle()
                       .frame(width: UIScreen.main.bounds.size.width/6 , height: UIScreen.main.bounds.size.height/12)
                        .foregroundColor(self.colours[Int.random(in: 0 ... 5 )])
                    VStack(alignment: .leading){

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struct SubCategoryText: View {

    var subCategorys : [String]
    @Binding var currentSubCategoryIndex : Int
    @Binding var indicatorOffset : CGFloat
    var body: some View {
        HStack{
            subCategory(index: 0, parent: self)
            subCategory(index: 1, parent: self)
            subCategory(index: 2, parent: self)

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struct CategoryText: View {
    @Binding var currentCategoryIndex : Int
    @Binding var nestedPages : [Int]
    var body: some View {
        HStack(spacing: 20){
            Text("Music")
                .font(.largeTitle).bold()
                .foregroundColor(self.currentCategoryIndex == 0 ? .primary : .secondary)
                .onTapGesture {
                    self.nestedPages = [0,0]

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struct ContentView: View {
    
    @State var alertItem : AlertItem?
    
    var body: some View {
            
        /// button
        Button(action: {
            
            self.alertItem = AlertItem(title: Text("I'm an alert"), message: Text("Are you sure about this?"), primaryButton: .default(Text("Yes"), action: {

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struct ContentView: View {
    
    @State var alertItem : AlertItem?
    
    var body: some View {
        
        VStack{
            
            /// button 1
            Button(action: {

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struct AlertItem: Identifiable {
    var id = UUID()
    var title = Text("")
    var message: Text?
    var dismissButton: Alert.Button?
    var primaryButton: Alert.Button?
    var secondaryButton: Alert.Button?
}