second.solution.mainapp.kt

class ProfileActivity: GaragePresenter.Contract.OnLoadCarSucceed {
    lateinit var garagePresenter : GaragePresenter;

    fun onCreate(){
        garagePresenter = GaragePresenter()
        garagePresenter.setOnLoadCarSucceedListener(this)
        garagePresenter.loadTheCars() // we just only need this function on this page
    }

    override fun onLoadSucceed() {
        println("ProfileActivity : on load succeed")
    }

}
class GarageActivity : GaragePresenter.Contract.OnLoadCarSucceed, GaragePresenter.Contract.OnAddCarSucceed,
    GaragePresenter.Contract.OnDeleteCarSucceed, GaragePresenter.Contract.OnFailure {
    lateinit var garagePresenter : GaragePresenter;

    fun onCreate(){
        garagePresenter = GaragePresenter()
        garagePresenter.setOnLoadCarSucceedListener(this)
        garagePresenter.setOnAddCarSucceedListener(this)
        garagePresenter.setOnDeleteCarSucceedListener(this)
        garagePresenter.setOnFailureListener(this)

        garagePresenter.loadTheCars()
        garagePresenter.deleteTheCars()
        garagePresenter.addTheCar()
        garagePresenter.otherCase()
    }

    override fun onLoadSucceed() {
        println("GarageActivity : on load succeed")
    }

    override fun onDeleteSucceed() {
        println("GarageActivity : on delete succeed")
    }

    override fun onAddSucceed() {
        println("GarageActivity : on add succeed")
    }

    override fun onFailure() {
        println("GarageActivity : on something failure happen")
    }
}


class GaragePresenter{
    private lateinit var viewOnLoadCarSucceed: Contract.OnLoadCarSucceed
    private lateinit var viewOnAddCarSucceed: Contract.OnAddCarSucceed
    private lateinit var viewDeleteCarSucceed: Contract.OnDeleteCarSucceed
    private lateinit var viewonFailure: Contract.OnFailure

    fun setOnLoadCarSucceedListener(listener:Contract.OnLoadCarSucceed){
        this.viewOnLoadCarSucceed = listener
    }
    fun setOnAddCarSucceedListener(listener: Contract.OnAddCarSucceed){
        this.viewOnAddCarSucceed = listener
    }
    fun setOnDeleteCarSucceedListener(listener: Contract.OnDeleteCarSucceed){
        this.viewDeleteCarSucceed = listener
    }
    fun setOnFailureListener(listener:Contract.OnFailure){
        this.viewonFailure = listener
    }

    fun loadTheCars(){
        //do some logic here and finally trigger the succeed callback
        this.viewOnLoadCarSucceed.onLoadSucceed()

    }
    fun deleteTheCars(){
        //do some logic here and finally trigger the succeed callback
        this.viewDeleteCarSucceed.onDeleteSucceed()
    }

    fun addTheCar(){
        //do some logic here and finally trigger the succeed callback
        this.viewOnAddCarSucceed.onAddSucceed()
    }

    fun otherCase(){
        //do some logic here but it was wrong and finally trigger the failure callback
        this.viewonFailure.onFailure()
    }

    interface Contract{
        interface OnLoadCarSucceed {
            fun onLoadSucceed()
        }
        interface OnDeleteCarSucceed {
            fun onDeleteSucceed()
        }
        interface OnAddCarSucceed{
            fun onAddSucceed()
        }
        interface OnFailure{
            fun onFailure()
        }
    }

}
fun main() {
    var loginActivity = ProfileActivity()
    loginActivity.onCreate()

    var garageActivity = GarageActivity()
    garageActivity.onCreate()
}