Supports login with email.

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

@@ -7,12 +7,14 @@ import chat.rocket.android.helper.NetworkHelper
 import chat.rocket.android.infrastructure.LocalRepository
 import chat.rocket.android.server.domain.*
 import chat.rocket.android.server.infraestructure.RocketChatClientFactory
+import chat.rocket.android.util.extensions.isEmailValid
 import chat.rocket.android.util.extensions.launchUI
 import chat.rocket.common.RocketChatException
 import chat.rocket.common.RocketChatTwoFactorException
 import chat.rocket.common.util.ifNull
 import chat.rocket.core.RocketChatClient
 import chat.rocket.core.internal.rest.login
+import chat.rocket.core.internal.rest.loginWithEmail
 import chat.rocket.core.internal.rest.me
 import chat.rocket.core.internal.rest.registerPushToken
 import javax.inject.Inject
@@ -93,7 +95,12 @@ class LoginPresenter @Inject constructor(private val view: LoginView,
                         view.showLoading()
 
                         try {
-                            val token = client.login(usernameOrEmail, password)
+                            val token = if (usernameOrEmail.isEmailValid()) {
+                                client.loginWithEmail(usernameOrEmail, password)
+                            } else {
+                                client.login(usernameOrEmail, password)
+                            }
+
                             val me = client.me()
                             multiServerRepository.save(
                                 server,

app/src/main/java/chat/rocket/android/util/extensions/Text.kt

@@ -3,6 +3,7 @@ package chat.rocket.android.util.extensions
 import android.text.Spannable
 import android.text.Spanned
 import android.text.TextUtils
+import android.util.Patterns
 import android.widget.EditText
 import android.widget.TextView
 import chat.rocket.android.widget.emoji.EmojiParser
@@ -31,6 +32,8 @@ fun EditText.erase() {
     }
 }
 
+fun String.isEmailValid(): Boolean = Patterns.EMAIL_ADDRESS.matcher(this).matches()
+
 var TextView.textContent: String
     get() = text.toString()
     set(value) {