import SwiftUI
import Foundation

struct NewTodo: Encodable { let title: String; let completed: Bool }

func createTodo(_ todo: NewTodo) async throws -> Int {
  let url = URL(string: "https://jsonplaceholder.typicode.com/todos")!
  var req = URLRequest(url: url)
  req.httpMethod = "POST"
  req.setValue("application/json", forHTTPHeaderField: "Content-Type")
  req.httpBody = try JSONEncoder().encode(todo)
  let (_, resp) = try await URLSession.shared.data(for: req)
  return (resp as? HTTPURLResponse)?.statusCode ?? 0
}

struct NetworkingPostDemo: View {
  @State private var status: Int? = nil
  var body: some View {
    VStack(spacing: 12) {
      Button("Create Todo") {
        Task {
          do { status = try await createTodo(NewTodo(title: "Demo", completed: false)) }
          catch { print(error); status = nil }
        }
      }
      if let status { Text("Status: \(status)") }
    }
    .padding()
  }
}

                    

import SwiftUI

struct ContentView: View {
  var body: some View {
    NetworkingPostDemo()
  }
}

                    

import SwiftUI

@main
struct MyApp: App {
  var body: some Scene {
    WindowGroup { ContentView() }
  }
}