Alerts the user about username creation using the web version.

app/src/main/java/chat/rocket/android/authentication/login/presentation/LoginPresenter.kt

@@ -212,12 +212,16 @@ class LoginPresenter @Inject constructor(private val view: LoginView,
                             throw IllegalStateException("Expected TYPE_LOGIN_USER_EMAIL, TYPE_LOGIN_CAS or TYPE_LOGIN_OAUTH")
                         }
                     }
-                    val me = client.me()
-                    localRepository.save(LocalRepository.CURRENT_USERNAME_KEY, me.username)
-                    saveAccount(me)
-                    saveToken(token)
-                    registerPushToken()
-                    navigator.toChatList()
+                    val username = client.me().username
+                    if (username != null) {
+                        localRepository.save(LocalRepository.CURRENT_USERNAME_KEY, username)
+                        saveAccount(username)
+                        saveToken(token)
+                        registerPushToken()
+                        navigator.toChatList()
+                    } else if (loginType == TYPE_LOGIN_OAUTH) {
+                        view.alertRequiresUsername()
+                    }
                 } catch (exception: RocketChatException) {
                     exception.message?.let {
                         view.showMessage(it)
@@ -234,32 +238,32 @@ class LoginPresenter @Inject constructor(private val view: LoginView,
         }
     }
 
-    private fun saveToken(token: Token) {
-        tokenRepository.save(currentServer, token)
-    }
-
-    private suspend fun registerPushToken() {
-        localRepository.get(LocalRepository.KEY_PUSH_TOKEN)?.let {
-            client.registerPushToken(it, getAccountsInteractor.get(), factory)
-        }
-        // TODO: When the push token is null, at some point we should receive it with
-        // onTokenRefresh() on FirebaseTokenService, we need to confirm it.
-    }
-
     private fun getOauthClientId(listMap: List<Map<String, String>>, serviceName: String): String? {
         return listMap.find { map -> map.containsValue(serviceName) }
                 ?.get("appId")
     }
 
-    private suspend fun saveAccount(me: Myself) {
+    private suspend fun saveAccount(username: String) {
         val icon = settings.favicon()?.let {
             UrlHelper.getServerLogoUrl(currentServer, it)
         }
         val logo = settings.wideTile()?.let {
             UrlHelper.getServerLogoUrl(currentServer, it)
         }
-        val thumb = UrlHelper.getAvatarUrl(currentServer, me.username!!)
-        val account = Account(currentServer, icon, logo, me.username!!, thumb)
+        val thumb = UrlHelper.getAvatarUrl(currentServer, username)
+        val account = Account(currentServer, icon, logo, username, thumb)
         saveAccountInteractor.save(account)
     }
+
+    private fun saveToken(token: Token) {
+        tokenRepository.save(currentServer, token)
+    }
+
+    private suspend fun registerPushToken() {
+        localRepository.get(LocalRepository.KEY_PUSH_TOKEN)?.let {
+            client.registerPushToken(it, getAccountsInteractor.get(), factory)
+        }
+        // TODO: When the push token is null, at some point we should receive it with
+        // onTokenRefresh() on FirebaseTokenService, we need to confirm it.
+    }
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/login/presentation/LoginView.kt

@@ -186,4 +186,9 @@ interface LoginView : LoadingView, MessageView, InternetView {
      * Alerts the user about a wrong inputted password.
      */
     fun alertWrongPassword()
+
+    /**
+     * Alerts the user about the need of creating an username using the web app when creating an user through OAuth.
+     */
+    fun alertRequiresUsername()
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/login/ui/LoginFragment.kt

@@ -289,6 +289,10 @@ class LoginFragment : Fragment(), LoginView {
         text_password.requestFocus()
     }
 
+    override fun alertRequiresUsername() {
+        showMessage(getString(R.string.msg_requires_username))
+    }
+
     private fun showRemainingSocialAccountsView() {
         social_accounts_container.postDelayed({
             (0..social_accounts_container.childCount)

app/src/main/res/values-pt-rBR/strings.xml

@@ -27,7 +27,6 @@
     <string name="action_join_chat">Entrar no Chat</string>
     <string name="action_add_account">Adicionar Conta</string>
 
-
     <!-- Settings List -->
     <string-array name="settings_actions">
         <item name="item_password">Alterar senha</item>
@@ -74,6 +73,7 @@
     <string name="msg_preview_audio">Audio</string>
     <string name="msg_preview_photo">Foto</string>
     <string name="msg_no_messages_yet">Nenhuma mensagem ainda</string>
+    <string name="msg_requires_username">Nome de usuário requerido: Por favor, erie um nome de usuário através da versão web e volte para fazer login</string>
 
     <!-- System messages -->
     <string name="message_room_name_changed">Nome da sala alterado para: %1$s por %2$s</string>

app/src/main/res/values/strings.xml

@@ -75,6 +75,7 @@
     <string name="msg_preview_audio">Audio</string>
     <string name="msg_preview_photo">Photo</string>
     <string name="msg_no_messages_yet">No messages yet</string>
+    <string name="msg_requires_username">Username required: Please, create an username through the web version and come back to log in</string>
 
     <!-- System messages -->
     <string name="message_room_name_changed">Room name changed to: %1$s by %2$s</string>