resolve localized exception message as Either

app/src/main/java/com/biganto/visual/roompark/domain/custom_exception/CustomException.kt

@@ -125,14 +125,12 @@ sealed class CustomApiException(val code:Int,@StringRes  val messageStringId: In
         ,messageStringId= CUSTOM_API_ERROR_RESPONSE_CODE_231_MESSAGE_ID)
 
 
-
     class TourByIdNotFoundException() : CustomApiException(
             CUSTOM_API_ERROR_RESPONSE_CODE_TOUR_NOT_FOUND
             ,messageStringId= CUSTOM_API_ERROR_RESPONSE_CODE_TOUR_NOT_FOUND_MESSAGE_ID)
     class UnknownCustomApiException(code: Int, @StringRes messageStringId:Int?, apiMessage:String?)
         : CustomApiException(code,messageStringId,apiMessage)
 
-
 }
 
 //as an agreement error message should be correct for user (and localized, if needed) on server-side

app/src/main/java/com/biganto/visual/roompark/presentation/screen/auth/ScreenController.kt

@@ -69,12 +69,13 @@ class AuthScreenController  :
     override fun render(viewState: AuthScreenViewState) {
         super.render(viewState)
         Timber.d("Render state $viewState")
-        when(viewState){
+        when(viewState as BaseState){
             is AuthScreenViewState.Idle -> render(viewState)
             is AuthScreenViewState.Authorization -> render(viewState)
             is AuthScreenViewState.SignedIn -> render(viewState)
             is AuthScreenViewState.SignInError -> render(viewState)
             is AuthScreenViewState.SomeError -> render(viewState)
+            is BaseState.HandleError -> render(viewState)
 
         }
     }
@@ -95,14 +96,12 @@ class AuthScreenController  :
     }
 
     private fun render(viewState: AuthScreenViewState.SignInError){
-        viewState.exception.stringId?.let { snackbar.showSnackBar(it) }
-        viewState.exception.message?.let { snackbar.showSnackBar(it, Snackbar.LENGTH_LONG) }
+        viewState.exception.selectHandler(snackbar::showSnackBar,snackbar::showSnackBar)
         signInButton.isEnabled=true
     }
 
     private fun render(viewState: AuthScreenViewState.SomeError){
-        viewState.exception.stringId?.let { snackbar.showSnackBar(it) }
-        viewState.exception.message?.let { snackbar.showSnackBar(it, Snackbar.LENGTH_LONG) }
+        viewState.exception.selectHandler(snackbar::showSnackBar,snackbar::showSnackBar)
     }
 
 

app/src/main/java/com/biganto/visual/roompark/presentation/screen/auth/ScreenViewState.kt

@@ -7,7 +7,6 @@ import com.biganto.visual.roompark.util.monades.ExceptionString
  * Created by Vladislav Bogdashkin on 30.09.2019.
  */
 
-
 sealed class AuthScreenViewState : BigantoBaseViewState() {
     class Idle : AuthScreenViewState()
     class Authorization : AuthScreenViewState()

app/src/main/java/com/biganto/visual/roompark/util/monades/either.kt

@@ -10,10 +10,21 @@ import com.biganto.visual.roompark.domain.custom_exception.CustomApiException
 sealed class Either<out E, out V> {
     data class Left<out E>(val left: E) : Either<E, Nothing>()
     data class Right<out V>(val right: V) : Either<Nothing, V>()
+
+
+
 }
 
 
-data class ExceptionString(@StringRes var stringId: Int?, var message: String?) {
+data class ExceptionString(@StringRes private val stringId: Int?, private  val message: String?) {
+
+    val errorMessage : Either<Int,String>
+
+    fun selectHandler(a1:(Int)->Unit,a2:(String)->Unit) =
+        when(errorMessage){
+            is Either.Left -> a1(errorMessage.left)
+            is Either.Right -> a2(errorMessage.right)
+        }
 
     constructor(e:CustomApiException) : this(
         if (e.message!=null) null else e.messageStringId,
@@ -21,8 +32,8 @@ data class ExceptionString(@StringRes var stringId: Int?, var message: String?)
     )
 
     init {
-        assert(stringId!=null && message!=null) { "both values cannot be non-null" }
-        assert(stringId==null && message==null) { "both values cannot be null" }
+        assert(stringId==null && message==null) { "both values cannot be null!" }
+        errorMessage = if (stringId!=null) Either.Left(stringId) else Either.Right(message!!)
     }
 
 }

app/src/main/java/com/biganto/visual/roompark/util/view_utils/snackbar/SnackBarModule.kt

@@ -80,10 +80,11 @@ interface ISnackBarProvider{
     fun bindRootView(rootView : View?)
     val isRootBounded : Boolean
     val snackBar : Snackbar?
+    fun showSnackBar(@StringRes stringId: Int)
+    fun showSnackBar(erorrMessage: Any?)
     fun showSnackBar(message: String)
     fun showSnackBar(message: String, length: Int)
     fun showSnackBar(message: String, type: SnackBarMessageType, length: Int)
-    fun showSnackBar(@StringRes stringId: Int)
 }
 
 enum class SnackBarMessageType{