Viper explanations

LoginContracts.kt

//https://cheesecakelabs.com/blog/using-viper-architecture-android/
class LoginContracts {
  interface View {
    //1. this are the methods the presenter the contract can call (for displaying data)
    // - implemented by fragment/activity/view
    fun goToHomeScreen(user: User)
    fun showError(message: String)
  }

  interface Presenter {
    //1. handles the inputs from the views
    // - includes lifecycle events,implemented by presenter
    fun onDestroy()
    fun onLoginButtonPressed(username: String, password: String)
  }

  interface Interactor {
    //1. methods for the Contract (to perform the login process)
    fun login(username: String, password: String)
  }

  interface InteractorOutput {
    //1. methods for the interactor output
    //- implemented by presenter
    fun onLoginSuccess(user: User)
    fun onLoginError(message: String)
  }
  
}