How is the Intent transmitted in the MVI architecture?

In the MVI (Model-View-Intent) architecture, the transmission of Intent is carried out through a stream of events that represent user or system intentions. An Intent is an object or event that describes an action the user wants to perform.

The process of transmitting Intent typically looks like this:

1. The View generates an Intent based on user input (e.g., button press).
2. The Intent is passed to the Intent Processor or ViewModel, which processes these intentions.
3. The Intent handler transforms them into actions on the model, initiating state changes.
4. The updated state is returned back to the View for display.

Example of transmitting Intent in Kotlin using Flow:

sealed class UserIntent {
    object LoadData : UserIntent()
    data class Submit(val data: String) : UserIntent()
}

class ViewModel {
    private val intents = MutableSharedFlow<UserIntent>()

    fun processIntent(intent: UserIntent) {
        intents.tryEmit(intent)
    }

    init {
        intents.onEach { intent ->
            when (intent) {
                is UserIntent.LoadData -> loadData()
                is UserIntent.Submit -> submitData(intent.data)
            }
        }.launchIn(viewModelScope)
    }

    private fun loadData() { /* load data */ }
    private fun submitData(data: String) { /* send data */ }
}

Thus, the Intent is transmitted as an event from the View to the processing layer, ensuring a reactive and unambiguous data flow.