Login screens: Fix navigation issue

vector/src/main/java/im/vector/riotx/core/error/ErrorFormatter.kt

@@ -21,6 +21,7 @@ import im.vector.matrix.android.api.failure.MatrixError
 import im.vector.riotx.R
 import im.vector.riotx.core.resources.StringProvider
 import java.net.SocketTimeoutException
+import java.net.UnknownHostException
 import javax.inject.Inject
 
 class ErrorFormatter @Inject constructor(private val stringProvider: StringProvider) {
@@ -36,6 +37,9 @@ class ErrorFormatter @Inject constructor(private val stringProvider: StringProvi
             is Failure.NetworkConnection -> {
                 if (throwable.ioException is SocketTimeoutException) {
                     stringProvider.getString(R.string.error_network_timeout)
+                } else if (throwable.ioException is UnknownHostException) {
+                    // Invalid homeserver?
+                    stringProvider.getString(R.string.login_error_unknown_host)
                 } else {
                     stringProvider.getString(R.string.error_no_network)
                 }

vector/src/main/java/im/vector/riotx/features/login/LoginActivity.kt

@@ -21,7 +21,6 @@ import android.content.Intent
 import androidx.appcompat.app.AlertDialog
 import androidx.core.view.isVisible
 import androidx.fragment.app.FragmentManager
-import com.airbnb.mvrx.Success
 import com.airbnb.mvrx.viewModel
 import com.airbnb.mvrx.withState
 import im.vector.riotx.R
@@ -69,7 +68,7 @@ class LoginActivity : VectorBaseActivity() {
                         is LoginNavigation.OpenServerSelection     -> addFragmentToBackstack(R.id.loginFragmentContainer, LoginServerSelectionFragment::class.java)
                         is LoginNavigation.OnServerSelectionDone   -> onServerSelectionDone()
                         is LoginNavigation.OnSignModeSelected      -> onSignModeSelected(it)
-                        is LoginNavigation.OnLoginFlowRetrieved    -> onLoginFlowRetrieved(it)
+                        is LoginNavigation.OnLoginFlowRetrieved    -> onLoginFlowRetrieved()
                         is LoginNavigation.OnSsoLoginFallbackError -> onSsoLoginFallbackError(it)
                     }
                 }
@@ -82,16 +81,12 @@ class LoginActivity : VectorBaseActivity() {
                 .disposeOnDestroy()
     }
 
-    private fun onLoginFlowRetrieved(onLoginFlowRetrieved: LoginNavigation.OnLoginFlowRetrieved) {
-        when (onLoginFlowRetrieved.loginMode) {
-            LoginMode.Sso      -> addFragmentToBackstack(R.id.loginFragmentContainer, LoginSsoFallbackFragment::class.java)
-            LoginMode.Unsupported,
-            LoginMode.Password -> addFragmentToBackstack(R.id.loginFragmentContainer, LoginSignUpSignInSelectionFragment::class.java)
-        }
+    private fun onLoginFlowRetrieved() {
+        addFragmentToBackstack(R.id.loginFragmentContainer, LoginSignUpSignInSelectionFragment::class.java)
     }
 
     private fun updateWithState(loginViewState: LoginViewState) {
-        if (loginViewState.asyncLoginAction is Success) {
+        if (loginViewState.isUserLogged()) {
             val intent = HomeActivity.newIntent(this)
             startActivity(intent)
             finish()
@@ -123,11 +118,21 @@ class LoginActivity : VectorBaseActivity() {
     }
 
     private fun onSignModeSelected(mode: LoginNavigation.OnSignModeSelected) {
-        // We cannot use the state, it is not ready...
+        // We cannot use the state to get the SignMode, it is not ready...
         when (mode.signMode) {
             SignMode.Unknown -> error("Sign mode has to be set before calling this method")
             SignMode.SignUp  -> Unit // TODO addFragmentToBackstack(R.id.loginFragmentContainer, SignUpFragment::class.java)
-            SignMode.SignIn  -> addFragmentToBackstack(R.id.loginFragmentContainer, LoginFragment::class.java)
+            SignMode.SignIn  -> {
+                // It depends on the LoginMode
+                withState(loginViewModel) {
+                    when (it.asyncHomeServerLoginFlowRequest.invoke()) {
+                        null                  -> error("Developer error")
+                        LoginMode.Password    -> addFragmentToBackstack(R.id.loginFragmentContainer, LoginFragment::class.java)
+                        LoginMode.Sso         -> addFragmentToBackstack(R.id.loginFragmentContainer, LoginSsoFallbackFragment::class.java)
+                        LoginMode.Unsupported -> TODO() // TODO Import Fallback login fragment from Riot-Android
+                    }
+                }
+            }
         }
     }
 

vector/src/main/java/im/vector/riotx/features/login/LoginMode.kt

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2019 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.riotx.features.login
+
+enum class LoginMode {
+    Password,
+    Sso,
+    Unsupported
+}

vector/src/main/java/im/vector/riotx/features/login/LoginNavigation.kt

@@ -22,7 +22,7 @@ import im.vector.riotx.core.platform.VectorSharedAction
 sealed class LoginNavigation : VectorSharedAction {
     object OpenServerSelection : LoginNavigation()
     object OnServerSelectionDone : LoginNavigation()
-    data class OnLoginFlowRetrieved(val loginMode: LoginMode) : LoginNavigation()
+    object OnLoginFlowRetrieved : LoginNavigation()
     data class OnSignModeSelected(val signMode: SignMode) : LoginNavigation()
     //object OpenSsoLoginFallback : LoginNavigation()
     data class OnSsoLoginFallbackError(val errorCode: Int, val description: String, val failingUrl: String) : LoginNavigation()

vector/src/main/java/im/vector/riotx/features/login/LoginServerSelectionFragment.kt

@@ -112,7 +112,7 @@ class LoginServerSelectionFragment @Inject constructor() : AbstractLoginFragment
             }
             is Success -> {
                 // The home server url is valid
-                loginSharedActionViewModel.post(LoginNavigation.OnLoginFlowRetrieved(it.asyncHomeServerLoginFlowRequest.invoke()))
+                loginSharedActionViewModel.post(LoginNavigation.OnLoginFlowRetrieved)
             }
         }
     }

vector/src/main/java/im/vector/riotx/features/login/LoginServerUrlFormFragment.kt

@@ -123,7 +123,7 @@ class LoginServerUrlFormFragment @Inject constructor(
             }
             is Success -> {
                 // The home server url is valid
-                loginSharedActionViewModel.post(LoginNavigation.OnLoginFlowRetrieved(state.asyncHomeServerLoginFlowRequest.invoke()))
+                loginSharedActionViewModel.post(LoginNavigation.OnLoginFlowRetrieved)
             }
         }
     }

vector/src/main/java/im/vector/riotx/features/login/LoginViewState.kt

@@ -16,10 +16,7 @@
 
 package im.vector.riotx.features.login
 
-import com.airbnb.mvrx.Async
-import com.airbnb.mvrx.Loading
-import com.airbnb.mvrx.MvRxState
-import com.airbnb.mvrx.Uninitialized
+import com.airbnb.mvrx.*
 
 data class LoginViewState(
         val serverType: ServerType = ServerType.MatrixOrg,
@@ -33,10 +30,10 @@ data class LoginViewState(
         return asyncLoginAction is Loading
                 || asyncHomeServerLoginFlowRequest is Loading
     }
+
+    fun isUserLogged(): Boolean {
+        // TODO Add other async here
+        return asyncLoginAction is Success
+    }
 }
 
-enum class LoginMode {
-    Password,
-    Sso,
-    Unsupported
-}