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import FlowStacks
import SwiftUI

struct ContentView: View {
  @State var path = FlowPath()
  @State var isShowingWelcome = false

  var body: some View {
    FlowStack($path, withNavigation: true) {
      HomeView()
        .flowDestination(for: Int.self, destination: { number in
          NumberView(number: number)
        })
        .flowDestination(for: String.self, destination: { text in
          Text(text)
        })
        .flowDestination(isPresented: $isShowingWelcome, style: .sheet) {
          Text("Welcome to FlowStacks!")
        }
    }
  }
}

struct HomeView: View {
  @EnvironmentObject var navigator: FlowPathNavigator
  
  var body: some View {
    List {
      ForEach(0 ..< 10, id: \.self) { number in
        FlowLink(value: number, style: .sheet(withNavigation: true), label: { Text("Show \(number)") })
      }
      Button("Show 'hello'") {
        navigator.push("Hello")
      }
    }
    .navigationTitle("Home")
  }
}

struct NumberView: View {
  @EnvironmentObject var navigator: FlowPathNavigator
  let number: Int

  var body: some View {
    VStack(spacing: 8) {
      Text("\(number)")
      FlowLink(
        value: number + 1,
        style: .push,
        label: { Text("Show next number") }
      )
      Button("Go back to root") {
        navigator.goBackToRoot()
      }
    }
    .navigationTitle("\(number)")
  }
}