import SwiftUI

struct ContentView: View {
    // Composition root: the server stubs are replaced here when APIs are available.
    private let loginUseCase: any LoginUseCase = DefaultLoginUseCase(
        authenticationService: StubAuthenticationService()
    )
    @State private var leadService = StubLeadRemoteService(listDelay: .milliseconds(800))
    @State private var detailRepository = DefaultLeadDetailRepository(remoteService: StubLeadDetailRemoteService())
    @State private var session: LoginSession?

    var body: some View {
        if let session {
            NavigationStack {
                LeadOverviewView(
                    session: session,
                    repository: DefaultLeadRepository(remoteService: leadService),
                    detailRepository: detailRepository
                ) {
                    self.session = nil
                }
            }
        } else {
            LoginView(loginUseCase: loginUseCase) {
                session = $0
            }
        }
    }
}

#Preview {
    ContentView()
}