Merge branch 'feature/support-viewing-video' into feature/support-viewing-image

app/build.gradle

@@ -12,34 +12,47 @@ android {
         minSdkVersion 21
         targetSdkVersion versions.targetSdk
         versionCode 1
-        versionName "2.0.0"
+        versionName "2.0.0-beta1"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        multiDexEnabled true
     }
+
     buildTypes {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+
+    packagingOptions {
+        exclude 'META-INF/core.kotlin_module'
+    }
 }
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
 
+    implementation project(':core')
     implementation project(':player')
 
     implementation libraries.kotlin
+    implementation libraries.coroutines
+    implementation libraries.coroutinesAndroid
 
     implementation libraries.appCompat
     implementation libraries.recyclerview
     implementation libraries.design
     implementation libraries.constraintLayout
+    implementation libraries.cardView
 
     implementation libraries.dagger
     implementation libraries.daggerSupport
     kapt libraries.daggerProcessor
     kapt libraries.daggerAndroidApt
 
+    implementation libraries.moshi
+    implementation libraries.moshiKotlin
+
     implementation libraries.room
     kapt libraries.roomProcessor
     implementation libraries.roomRxjava
@@ -73,3 +86,9 @@ dependencies {
 repositories {
     mavenCentral()
 }
+
+kotlin {
+    experimental {
+        coroutines "enable"
+    }
+}
\ No newline at end of file

app/src/main/AndroidManifest.xml

@@ -15,10 +15,17 @@
         android:theme="@style/AppTheme">
 
         <activity
-            android:name=".app.AuthenticationActivity"
+            android:name=".authentication.ui.AuthenticationActivity"
             android:configChanges="orientation"
             android:screenOrientation="portrait"
-            android:theme="@style/AuthenticationTheme" />
+            android:theme="@style/AuthenticationTheme">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
 
         <activity
             android:name=".app.MainActivity"
@@ -27,12 +34,6 @@
         <activity
             android:name=".app.ChatRoomActivity"
             android:theme="@style/AppTheme">
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
-
-                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.LAUNCHER" />
-            </intent-filter>
         </activity>
     </application>
 

app/src/main/java/chat/rocket/android/BaseActivity.kt

-package chat.rocket.android
-
-import android.app.Activity
-import android.app.Fragment
-
-abstract class BaseActivity : Activity() {
-
-    protected fun addFragment(fragment: Fragment, tag: String, layoutId: Int) {
-        fragmentManager.beginTransaction().add(layoutId, fragment, tag).commit()
-    }
-}
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/AuthenticationActivity.kt

-package chat.rocket.android.app
-
-import android.os.Bundle
-import chat.rocket.android.BaseActivity
-import chat.rocket.android.R
-
-class AuthenticationActivity : BaseActivity() {
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_authentication)
-
-        LayoutHelper.androidBug5497Workaround(this)
-        addFragment(AuthenticationSignUpFragment(), "authenticationSignUpFragment", R.id.fragment_container)
-    }
-}
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/AuthenticationServerFragment.kt

-package chat.rocket.android.app
-
-import android.app.Fragment
-import android.os.Bundle
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import android.view.WindowManager
-import chat.rocket.android.R
-import kotlinx.android.synthetic.main.fragment_authentication_server.*
-
-class AuthenticationServerFragment : Fragment() {
-
-    override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater?.inflate(R.layout.fragment_authentication_server, container, false)
-
-    override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
-
-        text_server_url.setSelection(text_server_url.length())
-
-        activity.window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE)
-    }
-}
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/AuthenticationSignUpFragment.kt

-package chat.rocket.android.app
-
-import DrawableHelper
-import android.app.Fragment
-import android.os.Build
-import android.os.Bundle
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import android.view.WindowManager
-import chat.rocket.android.R
-import kotlinx.android.synthetic.main.fragment_authentication_sign_up.*
-
-class AuthenticationSignUpFragment : Fragment() {
-
-    override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater?.inflate(R.layout.fragment_authentication_sign_up, container, false)
-
-    override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
-
-        activity.window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE)
-
-        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.M) {
-            tintEditTextDrawableStart()
-        }
-
-        setupGlobalLayoutListener()
-    }
-
-    private fun tintEditTextDrawableStart() {
-        val context = activity.applicationContext
-
-        val personDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_person_black_24dp, context)
-        val atDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_at_black_24dp, context)
-        val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_lock_black_24dp, context)
-        val emailDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_email_black_24dp, context)
-
-        val drawables = arrayOf(personDrawable, atDrawable, lockDrawable, emailDrawable)
-        DrawableHelper.wrapDrawables(drawables)
-        DrawableHelper.tintDrawables(drawables, context, R.color.colorDrawableTintGrey)
-        DrawableHelper.compoundDrawables(arrayOf(text_name, text_username, text_password, text_email), drawables)
-    }
-
-    private fun setupGlobalLayoutListener() {
-        constraint_layout.viewTreeObserver.addOnGlobalLayoutListener {
-            if (KeyboardHelper.isSoftKeyboardShown(constraint_layout.rootView)) {
-                text_new_user_agreement.visibility = View.GONE
-            } else {
-                text_new_user_agreement.visibility = View.VISIBLE
-            }
-        }
-    }
-}
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/AuthenticationTwoFAFragment.kt

-package chat.rocket.android.app
-
-import DrawableHelper
-import android.app.Fragment
-import android.os.Build
-import android.os.Bundle
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import android.view.WindowManager
-import chat.rocket.android.R
-import kotlinx.android.synthetic.main.fragment_authentication_two_fa.*
-
-class AuthenticationTwoFAFragment : Fragment() {
-
-    override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater?.inflate(R.layout.fragment_authentication_two_fa, container, false)
-
-    override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
-
-        activity.window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE)
-
-        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.M) {
-            tintEditTextDrawableStart()
-        }
-    }
-
-    private fun tintEditTextDrawableStart() {
-        val context = activity.applicationContext
-
-        val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_vpn_key_black_24dp, context)
-
-        DrawableHelper.wrapDrawable(lockDrawable)
-        DrawableHelper.tintDrawable(lockDrawable, context, R.color.colorDrawableTintGrey)
-        DrawableHelper.compoundDrawable(text_two_factor_auth, lockDrawable)
-    }
-}
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/ChatRoomActivity.kt

 package chat.rocket.android.app
 
 import android.os.Bundle
-import chat.rocket.android.BaseActivity
+import android.support.v7.app.AppCompatActivity
 import chat.rocket.android.R
 import chat.rocket.android.app.chatroom.MessageFragment
+import chat.rocket.android.util.addFragment
 
-class ChatRoomActivity : BaseActivity() {
+class ChatRoomActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_chat_room)
 
-        addFragment(MessageFragment(), "MessageFragment", R.id.fragment_container)
+        addFragment("MessageFragment", R.id.fragment_container) {
+            MessageFragment()
+        }
     }
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/LayoutHelper.kt

@@ -4,13 +4,14 @@ import android.app.Activity
 import android.graphics.Rect
 import android.util.Log
 import android.view.View
+import android.view.ViewTreeObserver
 import android.widget.FrameLayout
 
 //TODO: check if this code has memory leak.
-object LayoutHelper {
-    private lateinit var childOfContent: View
+class LayoutHelper {
+    private var childOfContent: View? = null
     private var usableHeightPrevious: Int = 0
-    private lateinit var frameLayoutParams: FrameLayout.LayoutParams
+    private var frameLayoutParams: FrameLayout.LayoutParams? = null
 
     /**
      * Workaround to adjust the layout when in the full screen mode.
@@ -22,38 +23,48 @@ object LayoutHelper {
      *
      * @param activity The Activity to adjust the layout.
      */
-    fun androidBug5497Workaround(activity: Activity) {
+    fun install(activity: Activity) {
         try {
             val content = activity.findViewById<View>(android.R.id.content) as FrameLayout
             childOfContent = content.getChildAt(0)
-            childOfContent.viewTreeObserver.addOnGlobalLayoutListener({ resizeChildOfContent() })
-            frameLayoutParams = childOfContent.layoutParams as FrameLayout.LayoutParams
+            childOfContent?.viewTreeObserver?.addOnGlobalLayoutListener(listener)
+            frameLayoutParams = childOfContent?.layoutParams as FrameLayout.LayoutParams
         } catch (exception : ClassCastException) {
-            // TODO: are we using the android.util.Log for logging that type of errors?
+            // TODO: are we using the android.util.Log for logging that type of errors? or should we use the SDK logger?
             Log.e("ERROR", exception.message)
         }
     }
 
+    private val listener = ViewTreeObserver.OnGlobalLayoutListener {
+        resizeChildOfContent()
+    }
+
     private fun resizeChildOfContent() {
         val usableHeightNow = computeUsableHeight()
         if (usableHeightNow != usableHeightPrevious) {
-            val usableHeightSansKeyboard = childOfContent.rootView.height
+            val usableHeightSansKeyboard = childOfContent?.rootView?.height ?: 0
             val heightDifference = usableHeightSansKeyboard - usableHeightNow
             if (heightDifference > usableHeightSansKeyboard / 4) {
                 // keyboard probably just became visible
-                frameLayoutParams.height = usableHeightSansKeyboard - heightDifference
+                frameLayoutParams?.height = usableHeightSansKeyboard - heightDifference
             } else {
                 // keyboard probably just became hidden
-                frameLayoutParams.height = usableHeightNow
+                frameLayoutParams?.height = usableHeightNow
             }
-            childOfContent.requestLayout()
+            childOfContent?.requestLayout()
             usableHeightPrevious = usableHeightNow
         }
     }
 
     private fun computeUsableHeight(): Int {
         val rect = Rect()
-        childOfContent.getWindowVisibleDisplayFrame(rect)
+        childOfContent?.getWindowVisibleDisplayFrame(rect)
         return rect.bottom - rect.top
     }
+
+    fun remove() {
+        childOfContent?.viewTreeObserver?.removeOnGlobalLayoutListener(listener)
+        childOfContent = null
+        frameLayoutParams = null
+    }
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/MainActivity.kt

 package chat.rocket.android.app
 
 import android.os.Bundle
-import chat.rocket.android.BaseActivity
+import android.support.v7.app.AppCompatActivity
 import chat.rocket.android.R
 import chat.rocket.android.app.chatlist.ChatListFragment
+import chat.rocket.android.util.addFragment
 
-class MainActivity : BaseActivity() {
+class MainActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
 
-        addFragment(ChatListFragment(), "ChatListFragment", R.id.fragment_container)
+        addFragment("ChatListFragment", R.id.fragment_container) {
+            ChatListFragment()
+        }
     }
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/RocketChatApplication.kt

@@ -4,9 +4,8 @@ import android.app.Activity
 import android.app.Application
 import chat.rocket.android.BuildConfig
 import chat.rocket.android.app.utils.CustomImageFormatConfigurator
-
-import chat.rocket.android.dagger.DaggerApplicationComponent
 import com.facebook.drawee.backends.pipeline.DraweeConfig
+import chat.rocket.android.dagger.DaggerAppComponent
 import com.facebook.drawee.backends.pipeline.Fresco
 import com.facebook.imagepipeline.core.ImagePipelineConfig
 import com.jakewharton.threetenabp.AndroidThreeTen
@@ -18,15 +17,13 @@ import javax.inject.Inject
 
 class RocketChatApplication : Application(), HasActivityInjector {
 
-    @Inject lateinit var activityInjector: DispatchingAndroidInjector<Activity>
+    @Inject
+    lateinit var activityDispatchingAndroidInjector: DispatchingAndroidInjector<Activity>
 
     override fun onCreate() {
         super.onCreate()
 
-        DaggerApplicationComponent.builder()
-                .application(this)
-                .build()
-                .inject(this)
+        DaggerAppComponent.builder().application(this).build().inject(this)
 
         AndroidThreeTen.init(this)
 
@@ -53,6 +50,6 @@ class RocketChatApplication : Application(), HasActivityInjector {
     }
 
     override fun activityInjector(): AndroidInjector<Activity> {
-        return activityInjector
+        return activityDispatchingAndroidInjector
     }
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/chatlist/ChatListFragment.kt

 package chat.rocket.android.app.chatlist
 
-import android.app.Fragment
 import android.os.Bundle
+import android.support.v4.app.Fragment
 import android.support.v7.widget.DividerItemDecoration
 import android.support.v7.widget.LinearLayoutManager
 import android.view.LayoutInflater
@@ -14,9 +14,9 @@ import org.threeten.bp.LocalDateTime
 
 class ChatListFragment : Fragment() {
 
-    override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater?.inflate(R.layout.fragment_chat_list, container, false)
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater.inflate(R.layout.fragment_chat_list, container, false)
 
-    override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         showChatList(createDumpData())
     }
@@ -87,9 +87,10 @@ class ChatListFragment : Fragment() {
 
     // REMARK: The presenter should call this method. The presenter also need to sort the chat list by latest message (compared by its date).
     private fun showChatList(dataSet: List<Chat>) {
-        val context = activity.applicationContext
-        recycler_view.layoutManager = LinearLayoutManager(context, LinearLayoutManager.VERTICAL, false)
-        recycler_view.addItemDecoration(DividerItemDecoration(activity, DividerItemDecoration.VERTICAL))
-        recycler_view.adapter = ChatListAdapter(dataSet.toMutableList(), context)
+        activity?.apply {
+            recycler_view.layoutManager = LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false)
+            recycler_view.addItemDecoration(DividerItemDecoration(this, DividerItemDecoration.VERTICAL))
+            recycler_view.adapter = ChatListAdapter(dataSet.toMutableList(), this)
+        }
     }
 }

app/src/main/java/chat/rocket/android/app/chatroom/MessageFragment.kt

 package chat.rocket.android.app.chatroom
 
-import android.app.Fragment
 import android.os.Bundle
+import android.support.v4.app.Fragment
 import android.support.v7.widget.LinearLayoutManager
 import android.view.LayoutInflater
 import android.view.View
@@ -13,9 +13,9 @@ import org.threeten.bp.LocalDateTime
 
 class MessageFragment : Fragment() {
 
-    override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater?.inflate(R.layout.fragment_message, container, false)
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater.inflate(R.layout.fragment_message, container, false)
 
-    override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         showMessageList(createDumpData())
     }
@@ -45,8 +45,9 @@ class MessageFragment : Fragment() {
 
     // REMARK: The presenter should call this method.
     private fun showMessageList(dataSet: List<Message>) {
-        val context = activity
-        recycler_view.layoutManager = LinearLayoutManager(context, LinearLayoutManager.VERTICAL, false)
-        recycler_view.adapter = MessageListAdapter(context, dataSet.toMutableList()) {}
+        activity?.apply {
+            recycler_view.layoutManager = LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false)
+            recycler_view.adapter = MessageListAdapter(this, dataSet.toMutableList()) {}
+        }
     }
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/utils/ColorImage.kt

@@ -108,6 +108,7 @@ object ColorImage {
                 // Return the CloseableImage
                 return CloseableColorImage(color)
             } catch (e: IOException) {
+                // TODO: are we using the android.util.Log for logging that type of errors? or should we use the SDK logger?
                 e.printStackTrace()
             }
             // Return nothing if an error occurred

app/src/main/java/chat/rocket/android/app/utils/SvgDecoder.kt

@@ -79,6 +79,7 @@ object SvgDecoder {
                 val svg = SVG.getFromInputStream(encodedImage.inputStream)
                 return CloseableSvgImage(svg)
             } catch (e: SVGParseException) {
+                // TODO: are we using the android.util.Log for logging that type of errors? or should we use the SDK logger?
                 e.printStackTrace()
             }
             // Return nothing if an error occurred

app/src/main/java/chat/rocket/android/authentication/di/AuthenticationModule.kt

+package chat.rocket.android.authentication.di
+
+import chat.rocket.android.authentication.infraestructure.AuthTokenRepository
+import chat.rocket.android.authentication.presentation.AuthenticationNavigator
+import chat.rocket.android.authentication.ui.AuthenticationActivity
+import chat.rocket.android.dagger.scope.PerActivity
+import dagger.Module
+import dagger.Provides
+import kotlinx.coroutines.experimental.Job
+
+@Module
+class AuthenticationModule {
+
+    @Provides
+    @PerActivity
+    fun provideAuthenticationNavigator(activity: AuthenticationActivity) = AuthenticationNavigator(activity)
+
+    @Provides
+    @PerActivity
+    fun provideAuthTokenRepository(): AuthTokenRepository {
+        return AuthTokenRepository()
+    }
+
+    @Provides
+    fun provideJob(): Job {
+        return Job()
+    }
+}

app/src/main/java/chat/rocket/android/authentication/infraestructure/AuthTokenRepository.kt

+package chat.rocket.android.authentication.infraestructure
+
+import chat.rocket.common.model.Token
+import chat.rocket.core.TokenRepository
+
+class AuthTokenRepository : TokenRepository {
+    var savedToken: Token? = null
+
+    override fun get(): Token? {
+        return savedToken
+    }
+
+    override fun save(token: Token) {
+        savedToken = token
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/login/di/LoginFragmentModule.kt

+package chat.rocket.android.authentication.login.di
+
+import android.arch.lifecycle.LifecycleOwner
+import chat.rocket.android.authentication.login.presentation.LoginView
+import chat.rocket.android.authentication.login.ui.LoginFragment
+import chat.rocket.android.core.lifecycle.CancelStrategy
+import chat.rocket.android.dagger.scope.PerFragment
+import dagger.Module
+import dagger.Provides
+import kotlinx.coroutines.experimental.Job
+
+@Module
+@PerFragment
+class LoginFragmentModule {
+    @Provides
+    fun loginView(frag: LoginFragment): LoginView {
+        return frag
+    }
+
+    @Provides
+    fun provideLifecycleOwner(frag: LoginFragment): LifecycleOwner {
+        return frag
+    }
+
+    @Provides
+    fun provideCancelStrategy(owner: LifecycleOwner, jobs: Job): CancelStrategy {
+        return CancelStrategy(owner, jobs)
+    }
+ }

app/src/main/java/chat/rocket/android/authentication/login/di/LoginFragmentProvider.kt

+package chat.rocket.android.authentication.login.di
+
+import chat.rocket.android.authentication.login.ui.LoginFragment
+import dagger.Module
+import dagger.android.ContributesAndroidInjector
+
+@Module abstract class LoginFragmentProvider {
+
+    @ContributesAndroidInjector(modules = arrayOf(LoginFragmentModule::class))
+    abstract fun provideLoginFragment(): LoginFragment
+}

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

+package chat.rocket.android.authentication.login.presentation
+
+import chat.rocket.android.authentication.infraestructure.AuthTokenRepository
+import chat.rocket.android.authentication.presentation.AuthenticationNavigator
+import chat.rocket.android.core.lifecycle.CancelStrategy
+import chat.rocket.android.util.launchUI
+import chat.rocket.common.RocketChatException
+import chat.rocket.common.RocketChatTwoFactorException
+import chat.rocket.common.util.PlatformLogger
+import chat.rocket.core.RocketChatClient
+import chat.rocket.core.internal.rest.login
+import okhttp3.HttpUrl
+import okhttp3.OkHttpClient
+import javax.inject.Inject
+
+class LoginPresenter @Inject constructor(private val view: LoginView,
+                                         private val strategy: CancelStrategy,
+                                         private val navigator: AuthenticationNavigator,
+                                         private val okHttpClient: OkHttpClient,
+                                         private val logger: PlatformLogger,
+                                         private val repository: AuthTokenRepository) {
+
+    val client: RocketChatClient = RocketChatClient.create {
+        httpClient = okHttpClient
+        restUrl = HttpUrl.parse(navigator.currentServer)!!
+        websocketUrl = navigator.currentServer!!
+        tokenRepository = repository
+        platformLogger = logger
+    }
+
+    fun authenticate(username: String, password: String) {
+        // TODO - validate input
+
+        launchUI(strategy) {
+            view.showLoading()
+            try {
+                val token = client.login(username, password)
+
+                navigator.toChatList()
+            } catch (ex: RocketChatException) {
+                when(ex) {
+                    is RocketChatTwoFactorException ->
+                        navigator.toTwoFA(navigator.currentServer!!, username, password)
+                    else ->
+                        view.onLoginError(ex.message)
+                }
+            } finally {
+                view.hideLoading()
+            }
+        }
+    }
+
+    fun signup() {
+        navigator.toSignUp(navigator.currentServer!!)
+    }
+}
\ No newline at end of file

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

+package chat.rocket.android.authentication.login.presentation
+
+import chat.rocket.android.core.behaviours.LoadingView
+
+interface LoginView : LoadingView {
+    fun onLoginError(message: String?)
+}
\ No newline at end of file

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

-package chat.rocket.android.app
+package chat.rocket.android.authentication.login.ui
 
 import DrawableHelper
-import android.app.Fragment
+import android.app.ProgressDialog
 import android.os.Build
 import android.os.Bundle
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import android.view.WindowManager
+import android.support.v4.app.Fragment
+import android.view.*
 import android.widget.ScrollView
+import android.widget.Toast
 import chat.rocket.android.R
+import chat.rocket.android.app.KeyboardHelper
+import chat.rocket.android.authentication.login.presentation.LoginPresenter
+import chat.rocket.android.authentication.login.presentation.LoginView
+import dagger.android.support.AndroidSupportInjection
 import kotlinx.android.synthetic.main.fragment_authentication_log_in.*
+import javax.inject.Inject
 
-class AuthenticationLoginFragment : Fragment() {
+class LoginFragment : Fragment(), LoginView {
 
-    override fun onCreateView(inflater: LayoutInflater?, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater?.inflate(R.layout.fragment_authentication_log_in, container, false)
+    companion object {
+        private const val SERVER_URL = "server_url"
 
-    override fun onViewCreated(view: View?, savedInstanceState: Bundle?) {
+        fun newInstance(url: String) = LoginFragment().apply {
+            arguments = Bundle(1).apply {
+                putString(SERVER_URL, url)
+            }
+        }
+    }
+
+    var progress: ProgressDialog? = null
+    lateinit var serverUrl: String
+
+    @Inject
+    lateinit var presenter: LoginPresenter
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        AndroidSupportInjection.inject(this)
+        super.onCreate(savedInstanceState)
+
+        // TODO - research a better way to initialize parameters on fragments.
+        serverUrl = arguments?.getString(SERVER_URL) ?: "https://open.rocket.chat"
+    }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater.inflate(R.layout.fragment_authentication_log_in, container, false)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-        activity.window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN)
+        activity?.window?.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN)
 
         if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.M) {
             tintEditTextDrawableStart()
@@ -40,22 +68,38 @@ class AuthenticationLoginFragment : Fragment() {
 
         // Just an example: if the server allow the new users registration then show the respective interface.
         shouldShowSignUpMsgView(true)
+
+        button_log_in.setOnClickListener {
+            presenter.authenticate(text_username_or_email.text.toString(), text_password.text.toString())
         }
 
-    private fun tintEditTextDrawableStart() {
-        val context = activity.applicationContext
+        text_new_to_rocket_chat.setOnClickListener {
+            presenter.signup()
+        }
+    }
 
-        val personDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_assignment_ind_black_24dp, context)
-        val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_lock_black_24dp, context)
+    override fun onDestroyView() {
+        scroll_view.viewTreeObserver.removeOnGlobalLayoutListener(layoutListener)
+        super.onDestroyView()
+    }
+
+    private fun tintEditTextDrawableStart() {
+        activity?.applicationContext?.apply {
+            val personDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_assignment_ind_black_24dp, this)
+            val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_lock_black_24dp, this)
 
             val drawables = arrayOf(personDrawable, lockDrawable)
             DrawableHelper.wrapDrawables(drawables)
-        DrawableHelper.tintDrawables(drawables, context, R.color.colorDrawableTintGrey)
+            DrawableHelper.tintDrawables(drawables, this, R.color.colorDrawableTintGrey)
             DrawableHelper.compoundDrawables(arrayOf(text_username_or_email, text_password), drawables)
         }
+    }
 
     private fun setupGlobalLayoutListener() {
-        scroll_view.viewTreeObserver.addOnGlobalLayoutListener({
+        scroll_view.viewTreeObserver.addOnGlobalLayoutListener(layoutListener)
+    }
+
+    val layoutListener = ViewTreeObserver.OnGlobalLayoutListener {
         if (KeyboardHelper.isSoftKeyboardShown(scroll_view.rootView)) {
             shouldShowOauthView(false)
             shouldShowSignUpMsgView(false)
@@ -67,7 +111,6 @@ class AuthenticationLoginFragment : Fragment() {
                 shouldShowLoginButton(false)
             }
         }
-        })
     }
 
     private fun shouldShowOauthView(show: Boolean) {
@@ -152,4 +195,22 @@ class AuthenticationLoginFragment : Fragment() {
             button_fab.hide()
         }, 1500)
     }
+
+    override fun showLoading() {
+        // TODO - change for a proper progress indicator
+        progress = ProgressDialog.show(activity, "Authenticating",
+                "Verifying user credentials", true, true)
+    }
+
+    override fun hideLoading() {
+        progress?.apply {
+            cancel()
+        }
+        progress = null
+    }
+
+    override fun onLoginError(message: String?) {
+        // TODO - show a proper error message
+        Toast.makeText(activity, message, Toast.LENGTH_LONG).show()
+    }
 }
\ No newline at end of file

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

+package chat.rocket.android.authentication.presentation
+
+import android.content.Intent
+import chat.rocket.android.R
+import chat.rocket.android.app.MainActivity
+import chat.rocket.android.authentication.ui.AuthenticationActivity
+import chat.rocket.android.authentication.login.ui.LoginFragment
+import chat.rocket.android.authentication.signup.ui.SignupFragment
+import chat.rocket.android.authentication.twofactor.ui.TwoFAFragment
+import chat.rocket.android.util.addFragmentBackStack
+
+class AuthenticationNavigator(internal val activity: AuthenticationActivity) {
+    var currentServer: String? = null
+
+    fun toLogin(server: String) {
+        currentServer = server
+        activity.addFragmentBackStack("loginFragment", R.id.fragment_container) {
+            LoginFragment.newInstance(server)
+        }
+    }
+
+    fun toChatList() {
+        val chatRoom = Intent(activity, MainActivity::class.java).apply {
+            //TODO any parameter to pass
+        }
+        activity.startActivity(chatRoom)
+        activity.finish()
+    }
+
+    fun toTwoFA(server: String, username: String, password: String) {
+        currentServer = server
+        activity.addFragmentBackStack("twoFAFragment", R.id.fragment_container) {
+            TwoFAFragment.newInstance(server, username, password)
+        }
+    }
+
+    fun toSignUp(server: String) {
+        currentServer = server
+        activity.addFragmentBackStack("signupFragment", R.id.fragment_container) {
+            SignupFragment.newInstance(server)
+        }
+    }
+}

app/src/main/java/chat/rocket/android/authentication/server/di/ServerFragmentModule.kt

+package chat.rocket.android.authentication.server.di
+
+import chat.rocket.android.authentication.server.presentation.ServerView
+import chat.rocket.android.authentication.server.ui.ServerFragment
+import dagger.Module
+import dagger.Provides
+
+@Module
+class ServerFragmentModule {
+    @Provides
+    fun serverView(frag: ServerFragment): ServerView {
+        return frag
+    }
+}

app/src/main/java/chat/rocket/android/authentication/server/di/ServerFragmentProvider.kt

+package chat.rocket.android.authentication.server.di
+
+import chat.rocket.android.authentication.server.ui.ServerFragment
+import dagger.Module
+import dagger.android.ContributesAndroidInjector
+
+@Module abstract class ServerFragmentProvider {
+
+    @ContributesAndroidInjector(modules = arrayOf(ServerFragmentModule::class))
+    abstract fun provideServerFragment(): ServerFragment
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/server/presentation/ServerPresenter.kt

+package chat.rocket.android.authentication.server.presentation
+
+import chat.rocket.android.authentication.presentation.AuthenticationNavigator
+import javax.inject.Inject
+
+class ServerPresenter @Inject constructor(private val view: ServerView,
+                                          private val navigator: AuthenticationNavigator) {
+
+    fun login(server: String) {
+        // TODO - validate server URL and get server settings and info before going to Login screen
+        navigator.toLogin(server)
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/server/presentation/ServerView.kt

+package chat.rocket.android.authentication.server.presentation
+
+interface ServerView
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/server/ui/ServerFragment.kt

+package chat.rocket.android.authentication.server.ui
+
+import android.os.Bundle
+import android.support.v4.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.WindowManager
+import chat.rocket.android.R
+import chat.rocket.android.authentication.server.presentation.ServerPresenter
+import chat.rocket.android.authentication.server.presentation.ServerView
+import chat.rocket.android.util.ifEmpty
+import dagger.android.support.AndroidSupportInjection
+import kotlinx.android.synthetic.main.fragment_authentication_server.*
+import javax.inject.Inject
+
+class ServerFragment : Fragment(), ServerView {
+
+    @Inject
+    lateinit var presenter: ServerPresenter
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        AndroidSupportInjection.inject(this)
+        super.onCreate(savedInstanceState)
+    }
+
+    override fun onCreateView(inflater: LayoutInflater,
+                              container: ViewGroup?,
+                              savedInstanceState: Bundle?): View? =
+            inflater.inflate(R.layout.fragment_authentication_server, container, false)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        text_server_url.setSelection(text_server_url.length())
+
+        activity?.window?.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE)
+
+        button_connect.setOnClickListener {
+            val url = text_server_url.text.toString().ifEmpty(text_server_url.hint.toString())
+            presenter.login(server_protocol_label.text.toString() + url)
+        }
+    }
+
+    companion object {
+        fun newInstance() = ServerFragment()
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/signup/di/SignupFragmentModule.kt

+package chat.rocket.android.authentication.signup.di
+
+import android.arch.lifecycle.LifecycleOwner
+import chat.rocket.android.authentication.signup.presentation.SignupView
+import chat.rocket.android.authentication.signup.ui.SignupFragment
+import chat.rocket.android.core.lifecycle.CancelStrategy
+import chat.rocket.android.dagger.scope.PerFragment
+import dagger.Module
+import dagger.Provides
+import kotlinx.coroutines.experimental.Job
+
+@Module
+@PerFragment
+class SignupFragmentModule {
+    @Provides
+    fun signupView(frag: SignupFragment): SignupView {
+        return frag
+    }
+
+    @Provides
+    fun provideLifecycleOwner(frag: SignupFragment): LifecycleOwner {
+        return frag
+    }
+
+    @Provides
+    fun provideCancelStrategy(owner: LifecycleOwner, jobs: Job): CancelStrategy {
+        return CancelStrategy(owner, jobs)
+    }
+}

app/src/main/java/chat/rocket/android/authentication/signup/di/SignupFragmentProvider.kt

+package chat.rocket.android.authentication.signup.di
+
+import chat.rocket.android.authentication.signup.ui.SignupFragment
+import dagger.Module
+import dagger.android.ContributesAndroidInjector
+
+@Module abstract class SignupFragmentProvider {
+
+    @ContributesAndroidInjector(modules = arrayOf(SignupFragmentModule::class))
+    abstract fun provideSignupFragment(): SignupFragment
+}

app/src/main/java/chat/rocket/android/authentication/signup/presentation/SignupPresenter.kt

+package chat.rocket.android.authentication.signup.presentation
+
+import chat.rocket.android.authentication.infraestructure.AuthTokenRepository
+import chat.rocket.android.authentication.presentation.AuthenticationNavigator
+import chat.rocket.android.core.lifecycle.CancelStrategy
+import chat.rocket.android.util.launchUI
+import chat.rocket.common.RocketChatException
+import chat.rocket.common.util.PlatformLogger
+import chat.rocket.core.RocketChatClient
+import chat.rocket.core.internal.rest.login
+import chat.rocket.core.internal.rest.signup
+import okhttp3.HttpUrl
+import okhttp3.OkHttpClient
+import timber.log.Timber
+import javax.inject.Inject
+
+class SignupPresenter @Inject constructor(private val view: SignupView,
+                                          private val strategy: CancelStrategy,
+                                          private val navigator: AuthenticationNavigator,
+                                          private val okHttpClient: OkHttpClient,
+                                          private val logger: PlatformLogger,
+                                          private val repository: AuthTokenRepository) {
+
+    val client: RocketChatClient = RocketChatClient.create {
+        httpClient = okHttpClient
+        restUrl = HttpUrl.parse(navigator.currentServer)!!
+        websocketUrl = navigator.currentServer!!
+        tokenRepository = repository
+        platformLogger = logger
+    }
+
+    fun signup(email: String, name: String, username: String, password: String) {
+        // TODO - validate input
+
+        launchUI(strategy) {
+            view.showLoading()
+
+            try {
+                val user = client.signup(email, name, username, password)
+                Timber.d("Created user: $user")
+
+                val token = client.login(username, password)
+                Timber.d("Logged in: $token")
+
+                navigator.toChatList()
+            } catch (ex: RocketChatException) {
+                view.onSignupError(ex.message)
+            } finally {
+                view.hideLoading()
+            }
+        }
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/signup/presentation/SignupView.kt

+package chat.rocket.android.authentication.signup.presentation
+
+import chat.rocket.android.core.behaviours.LoadingView
+
+interface SignupView : LoadingView {
+    fun onSignupError(message: String? = "Unknown error")
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/signup/ui/SignupFragment.kt

+package chat.rocket.android.authentication.signup.ui
+
+import DrawableHelper
+import android.app.ProgressDialog
+import android.os.Build
+import android.os.Bundle
+import android.support.v4.app.Fragment
+import android.view.*
+import android.widget.Toast
+import chat.rocket.android.R
+import chat.rocket.android.app.KeyboardHelper
+import chat.rocket.android.authentication.signup.presentation.SignupPresenter
+import chat.rocket.android.authentication.signup.presentation.SignupView
+import chat.rocket.android.util.content
+import dagger.android.support.AndroidSupportInjection
+import kotlinx.android.synthetic.main.fragment_authentication_sign_up.*
+import javax.inject.Inject
+
+class SignupFragment : Fragment(), SignupView {
+
+    companion object {
+        private const val SERVER_URL = "server_url"
+
+        fun newInstance(url: String) = SignupFragment().apply {
+            arguments = Bundle(1).apply {
+                putString(SERVER_URL, url)
+            }
+        }
+    }
+
+    @Inject
+    lateinit var presenter: SignupPresenter
+    var progress: ProgressDialog? = null
+    lateinit var serverUrl: String
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        AndroidSupportInjection.inject(this)
+        super.onCreate(savedInstanceState)
+
+        // TODO - research a better way to initialize parameters on fragments.
+        serverUrl = arguments?.getString(SERVER_URL) ?: "https://open.rocket.chat"
+    }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater.inflate(R.layout.fragment_authentication_sign_up, container, false)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        activity?.window?.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE)
+
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.M) {
+            tintEditTextDrawableStart()
+        }
+
+        setupGlobalLayoutListener()
+
+        button_sign_up.setOnClickListener {
+            val email = text_email.content
+            val name = text_name.content
+            val username = text_username.content
+            val password = text_password.content
+
+            presenter.signup(email, name, username, password)
+        }
+    }
+
+    override fun onDestroyView() {
+        constraint_layout.viewTreeObserver.removeOnGlobalLayoutListener(layoutListener)
+        super.onDestroyView()
+    }
+
+    private fun tintEditTextDrawableStart() {
+        activity?.applicationContext?.apply {
+            val personDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_person_black_24dp, this)
+            val atDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_at_black_24dp, this)
+            val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_lock_black_24dp, this)
+            val emailDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_email_black_24dp, this)
+
+            val drawables = arrayOf(personDrawable, atDrawable, lockDrawable, emailDrawable)
+            DrawableHelper.wrapDrawables(drawables)
+            DrawableHelper.tintDrawables(drawables, this, R.color.colorDrawableTintGrey)
+            DrawableHelper.compoundDrawables(arrayOf(text_name, text_username, text_password, text_email), drawables)
+        }
+    }
+
+    private fun setupGlobalLayoutListener() {
+        constraint_layout.viewTreeObserver.addOnGlobalLayoutListener(layoutListener)
+    }
+
+    val layoutListener = ViewTreeObserver.OnGlobalLayoutListener {
+        if (KeyboardHelper.isSoftKeyboardShown(constraint_layout.rootView)) {
+            text_new_user_agreement.visibility = View.GONE
+        } else {
+            text_new_user_agreement.visibility = View.VISIBLE
+        }
+    }
+
+    override fun showLoading() {
+        // TODO - change for a proper progress indicator
+        progress = ProgressDialog.show(activity, "Authenticating",
+                "Registering user", true, true)
+    }
+
+    override fun hideLoading() {
+        progress?.apply {
+            cancel()
+        }
+        progress = null
+    }
+
+    override fun onSignupError(message: String?) {
+        // TODO - show a proper error message
+        Toast.makeText(activity, message, Toast.LENGTH_LONG).show()
+    }
+
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/twofactor/di/TwoFAFragmentModule.kt

+package chat.rocket.android.authentication.twofactor.di
+
+import android.arch.lifecycle.LifecycleOwner
+import chat.rocket.android.authentication.twofactor.presentation.TwoFAView
+import chat.rocket.android.authentication.twofactor.ui.TwoFAFragment
+import chat.rocket.android.core.lifecycle.CancelStrategy
+import chat.rocket.android.dagger.scope.PerFragment
+import dagger.Module
+import dagger.Provides
+import kotlinx.coroutines.experimental.Job
+
+@Module
+@PerFragment
+class TwoFAFragmentModule {
+    @Provides
+    fun loginView(frag: TwoFAFragment): TwoFAView {
+        return frag
+    }
+
+    @Provides
+    fun provideLifecycleOwner(frag: TwoFAFragment): LifecycleOwner {
+        return frag
+    }
+
+    @Provides
+    fun provideCancelStrategy(owner: LifecycleOwner, jobs: Job): CancelStrategy {
+        return CancelStrategy(owner, jobs)
+    }
+}

app/src/main/java/chat/rocket/android/authentication/twofactor/di/TwoFAFragmentProvider.kt

+package chat.rocket.android.authentication.twofactor.di
+
+import chat.rocket.android.authentication.twofactor.ui.TwoFAFragment
+import dagger.Module
+import dagger.android.ContributesAndroidInjector
+
+@Module abstract class TwoFAFragmentProvider {
+
+    @ContributesAndroidInjector(modules = arrayOf(TwoFAFragmentModule::class))
+    abstract fun provideTwoFAFragment(): TwoFAFragment
+}

app/src/main/java/chat/rocket/android/authentication/twofactor/presentation/TwoFAPresenter.kt

+package chat.rocket.android.authentication.twofactor.presentation
+
+import chat.rocket.android.authentication.infraestructure.AuthTokenRepository
+import chat.rocket.android.authentication.presentation.AuthenticationNavigator
+import chat.rocket.android.core.lifecycle.CancelStrategy
+import chat.rocket.android.util.launchUI
+import chat.rocket.common.RocketChatException
+import chat.rocket.common.util.PlatformLogger
+import chat.rocket.core.RocketChatClient
+import chat.rocket.core.internal.rest.login
+import okhttp3.HttpUrl
+import okhttp3.OkHttpClient
+import javax.inject.Inject
+
+class TwoFAPresenter @Inject constructor(private val view: TwoFAView,
+                                         private val strategy: CancelStrategy,
+                                         private val navigator: AuthenticationNavigator,
+                                         private val okHttpClient: OkHttpClient,
+                                         private val logger: PlatformLogger,
+                                         private val repository: AuthTokenRepository) {
+
+    val client: RocketChatClient = RocketChatClient.create {
+        httpClient = okHttpClient
+        restUrl = HttpUrl.parse(navigator.currentServer)!!
+        websocketUrl = navigator.currentServer!!
+        tokenRepository = repository
+        platformLogger = logger
+    }
+
+    fun authenticate(username: String, password: String, pin: String) {
+        // TODO - validate input
+
+        launchUI(strategy) {
+            view.showLoading()
+            try {
+                val token = client.login(username, password, pin)
+
+                navigator.toChatList()
+            } catch (ex: RocketChatException) {
+                view.onLoginError(ex.message)
+            } finally {
+                view.hideLoading()
+            }
+        }
+    }
+
+    fun signup() {
+        navigator.toSignUp(navigator.currentServer!!)
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/twofactor/presentation/TwoFAView.kt

+package chat.rocket.android.authentication.twofactor.presentation
+
+import chat.rocket.android.authentication.login.presentation.LoginView
+
+interface TwoFAView : LoginView
\ No newline at end of file

app/src/main/java/chat/rocket/android/authentication/twofactor/ui/TwoFAFragment.kt

+package chat.rocket.android.authentication.twofactor.ui
+
+import DrawableHelper
+import android.app.ProgressDialog
+import android.os.Build
+import android.os.Bundle
+import android.support.v4.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.WindowManager
+import android.widget.Toast
+import chat.rocket.android.R
+import chat.rocket.android.authentication.twofactor.presentation.TwoFAPresenter
+import chat.rocket.android.authentication.twofactor.presentation.TwoFAView
+import chat.rocket.android.util.content
+import dagger.android.support.AndroidSupportInjection
+import kotlinx.android.synthetic.main.fragment_authentication_two_fa.*
+import javax.inject.Inject
+
+class TwoFAFragment : Fragment(), TwoFAView {
+
+    companion object {
+        private const val SERVER_URL = "server_url"
+        private const val USERNAME = "username"
+        private const val PASSWORD = "password"
+
+        fun newInstance(url: String, username: String, password: String) = TwoFAFragment().apply {
+            arguments = Bundle(1).apply {
+                putString(SERVER_URL, url)
+                putString(USERNAME, username)
+                putString(PASSWORD, password)
+            }
+        }
+    }
+
+    var progress: ProgressDialog? = null
+    lateinit var serverUrl: String
+    lateinit var username: String
+    lateinit var password: String
+
+    @Inject
+    lateinit var presenter: TwoFAPresenter
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        AndroidSupportInjection.inject(this)
+        super.onCreate(savedInstanceState)
+
+        // TODO - research a better way to initialize parameters on fragments.
+        serverUrl = arguments?.getString(SERVER_URL) ?: "https://open.rocket.chat"
+        username = arguments?.getString(USERNAME) ?: ""
+        password = arguments?.getString(PASSWORD) ?: ""
+    }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater.inflate(R.layout.fragment_authentication_two_fa, container, false)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        activity?.window?.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE)
+
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.M) {
+            tintEditTextDrawableStart()
+        }
+
+        button_log_in.setOnClickListener {
+            presenter.authenticate(username, password, text_two_factor_auth.content)
+        }
+    }
+
+    private fun tintEditTextDrawableStart() {
+        activity?.applicationContext?.apply {
+            val lockDrawable = DrawableHelper.getDrawableFromId(R.drawable.ic_vpn_key_black_24dp, this)
+
+            DrawableHelper.wrapDrawable(lockDrawable)
+            DrawableHelper.tintDrawable(lockDrawable, this, R.color.colorDrawableTintGrey)
+            DrawableHelper.compoundDrawable(text_two_factor_auth, lockDrawable)
+        }
+    }
+
+    override fun showLoading() {
+        // TODO - change for a proper progress indicator
+        progress = ProgressDialog.show(activity, "Authenticating",
+                "Verifying user credentials", true, true)
+    }
+
+    override fun hideLoading() {
+        progress?.apply {
+            cancel()
+        }
+        progress = null
+    }
+
+    override fun onLoginError(message: String?) {
+        // TODO - show a proper error message
+        Toast.makeText(activity, message, Toast.LENGTH_LONG).show()
+    }
+}
\ No newline at end of file

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

+package chat.rocket.android.authentication.ui
+
+import android.os.Bundle
+import android.support.v4.app.Fragment
+import android.support.v7.app.AppCompatActivity
+import chat.rocket.android.R
+import chat.rocket.android.app.LayoutHelper
+import chat.rocket.android.authentication.server.ui.ServerFragment
+import chat.rocket.android.util.addFragment
+import dagger.android.AndroidInjection
+import dagger.android.AndroidInjector
+import dagger.android.DispatchingAndroidInjector
+import dagger.android.support.HasSupportFragmentInjector
+import javax.inject.Inject
+
+class AuthenticationActivity : AppCompatActivity(), HasSupportFragmentInjector {
+
+    @Inject
+    lateinit var fragmentDispatchingAndroidInjector: DispatchingAndroidInjector<Fragment>
+
+    val layoutHelper = LayoutHelper()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        AndroidInjection.inject(this)
+
+        setContentView(R.layout.activity_authentication)
+
+        layoutHelper.install(this)
+        addFragment("authenticationServerFragment", R.id.fragment_container) {
+            ServerFragment.newInstance()
+        }
+    }
+
+    override fun onDestroy() {
+        layoutHelper.remove()
+        super.onDestroy()
+    }
+
+    override fun supportFragmentInjector(): AndroidInjector<Fragment> {
+        return fragmentDispatchingAndroidInjector
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/core/behaviours/LoadingView.kt

+package chat.rocket.android.core.behaviours
+
+interface LoadingView {
+    fun showLoading()
+    fun hideLoading()
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/core/lifecycle/CancelStrategy.kt

+package chat.rocket.android.core.lifecycle
+
+import android.arch.lifecycle.Lifecycle
+import android.arch.lifecycle.LifecycleObserver
+import android.arch.lifecycle.LifecycleOwner
+import android.arch.lifecycle.OnLifecycleEvent
+import kotlinx.coroutines.experimental.Job
+import javax.inject.Inject
+
+class CancelStrategy @Inject constructor(owner: LifecycleOwner, val jobs: Job) : LifecycleObserver {
+    init {
+        owner.lifecycle.addObserver(this)
+    }
+
+    @OnLifecycleEvent(Lifecycle.Event.ON_DESTROY)
+    fun onDestroy() {
+        jobs.cancel()
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/dagger/ApplicationComponent.kt → app/src/main/java/chat/rocket/android/dagger/AppComponent.kt

 package chat.rocket.android.dagger
 
 import android.app.Application
-
-import javax.inject.Singleton
-
 import chat.rocket.android.app.RocketChatApplication
-import chat.rocket.android.dagger.module.ActivityBindingModule
-import chat.rocket.android.dagger.module.ApplicationModule
+import chat.rocket.android.dagger.module.ActivityBuilder
+import chat.rocket.android.dagger.module.AppModule
 import dagger.BindsInstance
 import dagger.Component
 import dagger.android.support.AndroidSupportInjectionModule
+import javax.inject.Singleton
 
 @Singleton
-@Component(modules = arrayOf(ActivityBindingModule::class, ApplicationModule::class,
-        AndroidSupportInjectionModule::class))
-interface ApplicationComponent {
+@Component(modules = arrayOf(AndroidSupportInjectionModule::class, AppModule::class, ActivityBuilder::class))
+interface AppComponent {
 
     @Component.Builder
     interface Builder {
         @BindsInstance
         fun application(application: Application): Builder
 
-        fun build(): ApplicationComponent
+        fun build(): AppComponent
     }
 
-    fun inject(application: RocketChatApplication)
+    fun inject(app: RocketChatApplication)
+
+    /*@Component.Builder
+    abstract class Builder : AndroidInjector.Builder<RocketChatApplication>()*/
 }

app/src/main/java/chat/rocket/android/dagger/module/ActivityBindingModule.java

-package chat.rocket.android.dagger.module;
-
-import dagger.Module;
-
-@Module
-public abstract class ActivityBindingModule {
-}

app/src/main/java/chat/rocket/android/dagger/module/ActivityBuilder.kt

+package chat.rocket.android.dagger.module
+
+import chat.rocket.android.app.MainActivity
+import chat.rocket.android.authentication.di.*
+import chat.rocket.android.authentication.login.di.LoginFragmentProvider
+import chat.rocket.android.authentication.server.di.ServerFragmentProvider
+import chat.rocket.android.authentication.signup.di.SignupFragmentProvider
+import chat.rocket.android.authentication.twofactor.di.TwoFAFragmentProvider
+import chat.rocket.android.authentication.ui.AuthenticationActivity
+import chat.rocket.android.dagger.scope.PerActivity
+import dagger.Module
+import dagger.android.ContributesAndroidInjector
+
+@Module
+abstract class ActivityBuilder {
+
+    @PerActivity
+    @ContributesAndroidInjector(modules = arrayOf(
+        AuthenticationModule::class,
+        LoginFragmentProvider::class,
+        ServerFragmentProvider::class,
+        SignupFragmentProvider::class,
+        TwoFAFragmentProvider::class
+    ))
+    abstract fun bindAuthenticationActivity(): AuthenticationActivity
+
+    @ContributesAndroidInjector
+    abstract fun bindMainActivity(): MainActivity
+}

app/src/main/java/chat/rocket/android/dagger/module/ApplicationModule.kt → app/src/main/java/chat/rocket/android/dagger/module/AppModule.kt

@@ -3,14 +3,19 @@ package chat.rocket.android.dagger.module
 import android.app.Application
 import android.arch.persistence.room.Room
 import android.content.Context
+import chat.rocket.android.BuildConfig
 import chat.rocket.android.app.RocketChatDatabase
 import chat.rocket.android.server.infraestructure.ServerDao
+import chat.rocket.android.util.TimberLogger
+import chat.rocket.common.util.PlatformLogger
 import dagger.Module
 import dagger.Provides
+import okhttp3.OkHttpClient
+import okhttp3.logging.HttpLoggingInterceptor
 import javax.inject.Singleton
 
 @Module
-class ApplicationModule {
+class AppModule {
 
     @Provides
     @Singleton
@@ -29,4 +34,45 @@ class ApplicationModule {
     fun provideServerDao(database: RocketChatDatabase): ServerDao {
         return database.serverDao()
     }
+
+    /*@Provides
+    @Singleton
+    @IntoSet
+    fun provideHttpLoggingInterceptor(): Interceptor {
+        val interceptor = HttpLoggingInterceptor()
+        if (BuildConfig.DEBUG) {
+            interceptor.level = HttpLoggingInterceptor.Level.BODY
+        } else {
+            interceptor.level = HttpLoggingInterceptor.Level.HEADERS
+        }
+
+        return interceptor
+    }*/
+
+    @Provides
+    @Singleton
+    fun provideHttpLoggingInterceptor(): HttpLoggingInterceptor {
+        val interceptor = HttpLoggingInterceptor()
+        if (BuildConfig.DEBUG) {
+            interceptor.level = HttpLoggingInterceptor.Level.BODY
+        } else {
+            interceptor.level = HttpLoggingInterceptor.Level.HEADERS
+        }
+
+        return interceptor
+    }
+
+    @Provides
+    @Singleton
+    fun provideOkHttpClient(logger: HttpLoggingInterceptor): OkHttpClient {
+        return OkHttpClient.Builder().apply {
+            addInterceptor(logger)
+        }.build()
+    }
+
+    @Provides
+    @Singleton
+    fun providePlatformLogger(): PlatformLogger {
+        return TimberLogger()
+    }
 }

app/src/main/java/chat/rocket/android/dagger/scope/PerFragment.kt

+package chat.rocket.android.dagger.scope
+
+import javax.inject.Scope
+
+@Scope
+@Retention(AnnotationRetention.RUNTIME)
+annotation class PerFragment
\ No newline at end of file

app/src/main/java/chat/rocket/android/login/ui/LoginActivity.java

-package chat.rocket.android.login.ui;
-
-import android.annotation.SuppressLint;
-import android.support.v7.app.AppCompatActivity;
-
-@SuppressLint("Registered")
-public class LoginActivity extends AppCompatActivity {
-}

app/src/main/java/chat/rocket/android/server/infraestructure/ServerEntityMapper.kt

@@ -4,7 +4,7 @@ import chat.rocket.android.server.domain.model.Server
 import chat.rocket.android.util.DataToDomain
 
 class ServerEntityMapper : DataToDomain<ServerEntity, Server> {
-    override fun translate(serverEntity: ServerEntity): Server {
-        return Server(serverEntity.id, serverEntity.name, serverEntity.host, serverEntity.avatar)
+    override fun translate(data: ServerEntity): Server {
+        return Server(data.id, data.name, data.host, data.avatar)
     }
 }

app/src/main/java/chat/rocket/android/util/ActivityExtensions.kt

+package chat.rocket.android.util
+
+import android.support.v4.app.Fragment
+import android.support.v7.app.AppCompatActivity
+
+fun AppCompatActivity.addFragment(tag: String, layoutId: Int, newInstance: () -> Fragment) {
+    val fragment = supportFragmentManager.findFragmentByTag(tag) ?: newInstance()
+    supportFragmentManager.beginTransaction().replace(layoutId, fragment, tag).commit()
+}
+
+fun AppCompatActivity.addFragmentBackStack(tag: String, layoutId: Int, newInstance: () -> Fragment) {
+    val fragment = supportFragmentManager.findFragmentByTag(tag) ?: newInstance()
+    supportFragmentManager.beginTransaction().replace(layoutId, fragment, tag).addToBackStack(tag).commit()
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/util/Coroutines.kt

+package chat.rocket.android.util
+
+import chat.rocket.android.core.lifecycle.CancelStrategy
+import kotlinx.coroutines.experimental.CoroutineScope
+import kotlinx.coroutines.experimental.Job
+import kotlinx.coroutines.experimental.android.UI
+import kotlinx.coroutines.experimental.launch
+
+/**
+ * Launches a coroutine on the UI context.
+ *
+ * @param strategy a CancelStrategy for canceling the coroutine job
+ */
+fun launchUI(strategy: CancelStrategy, block: suspend CoroutineScope.() -> Unit): Job {
+    return launch(context = UI, parent = strategy.jobs, block = block)
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/util/Extensions.kt

+package chat.rocket.android.util
+
+import android.widget.TextView
+
+fun String.ifEmpty(value: String): String {
+    if (isEmpty()) {
+        return value
+    }
+    return this
+}
+
+var TextView.content: String
+    get() = this.text.toString()
+    set(value) { this.text = value }
\ No newline at end of file

app/src/main/java/chat/rocket/android/util/TimberLogger.kt

+package chat.rocket.android.util
+
+import chat.rocket.common.util.PlatformLogger
+import timber.log.Timber
+
+class TimberLogger : PlatformLogger {
+    override fun debug(s: String) {
+        Timber.d(s)
+    }
+
+    override fun info(s: String) {
+        Timber.i(s)
+    }
+
+    override fun warn(s: String) {
+        Timber.w(s)
+    }
+}
\ No newline at end of file

app/src/main/res/layout/fragment_authentication_log_in.xml

@@ -168,7 +168,7 @@
         <TextView
             android:id="@+id/text_new_to_rocket_chat"
             android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
+            android:layout_height="48dp"
             android:layout_marginBottom="16dp"
             android:layout_marginEnd="@dimen/screen_edge_left_and_right_margins"
             android:layout_marginStart="@dimen/screen_edge_left_and_right_margins"

app/src/main/res/layout/fragment_authentication_server.xml

@@ -9,14 +9,25 @@
         android:layout_centerHorizontal="true"
         android:text="@string/title_sign_in_your_server" />
 
+    <TextView
+        android:id="@+id/server_protocol_label"
+        style="@style/AuthenticationLabel"
+        android:layout_below="@id/text_headline"
+        android:layout_marginTop="32dp"
+        android:gravity="center_vertical"
+        android:text="@string/default_protocol" />
+
     <EditText
         android:id="@+id/text_server_url"
         style="@style/AuthenticationEditText"
         android:layout_below="@id/text_headline"
+        android:layout_marginStart="0dp"
         android:layout_marginTop="32dp"
+        android:layout_toEndOf="@id/server_protocol_label"
+        android:hint="@string/default_server"
         android:imeOptions="actionDone"
         android:inputType="textUri"
-        android:text="@string/msg_https" />
+        android:paddingStart="0dp" />
 
     <Button
         android:id="@+id/button_connect"

app/src/main/res/values-v23/styles.xml

-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-
-    <style name="AuthenticationEditText" parent="Widget.AppCompat.EditText">
-        <item name="android:layout_width">match_parent</item>
-        <item name="android:layout_height">50dp</item>
-        <item name="android:layout_marginStart">@dimen/screen_edge_left_and_right_margins</item>
-        <item name="android:layout_marginEnd">@dimen/screen_edge_left_and_right_margins</item>
-        <item name="android:paddingStart">@dimen/edit_text_margin</item>
-        <item name="android:paddingEnd">@dimen/edit_text_margin</item>
-        <item name="android:maxLines">1</item>
-        <item name="android:drawablePadding">@dimen/edit_text_drawable_padding</item>
-        <item name="android:drawableTint">@color/colorDrawableTintGrey</item>
-        <item name="android:fontFamily">sans-serif</item>
-        <item name="android:background">@drawable/style_edit_text</item>
-    </style>
-
-</resources>
\ No newline at end of file

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

+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="default_protocol" translatable="false">https://</string>
+    <string name="default_server" translatable="false">open.rocket.chat</string>
+</resources>
\ No newline at end of file

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

@@ -11,7 +11,6 @@
     <string name="action_send">Send</string>
 
     <!-- Regular information messages -->
-    <string name="msg_https" translatable="false">https://</string>
     <string name="msg_username">username</string>
     <string name="msg_username_or_email">username or email</string>
     <string name="msg_password">password</string>

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

-<resources>
+<resources xmlns:tools="http://schemas.android.com/tools">
 
     <!-- Base application theme. -->
     <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
+        <!-- Customize your theme here. -->
         <item name="colorPrimary">@color/colorPrimary</item>
         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
         <item name="colorAccent">@color/colorAccent</item>
         <item name="android:statusBarColor">@color/colorPrimaryDark</item>
     </style>
 
-    <style name="AuthenticationTheme" parent="android:Theme.Material.NoActionBar.Fullscreen">
+    <style name="AuthenticationTheme" parent="Theme.AppCompat.NoActionBar">
         <item name="android:navigationBarColor">@color/colorPrimary</item>
     </style>
 
@@ -35,6 +36,18 @@
         <item name="android:paddingEnd">@dimen/edit_text_margin</item>
         <item name="android:maxLines">1</item>
         <item name="android:drawablePadding">@dimen/edit_text_drawable_padding</item>
+        <item name="android:drawableTint" tools:ignore="NewApi">@color/colorDrawableTintGrey</item>
+        <item name="android:fontFamily">sans-serif</item>
+        <item name="android:background">@drawable/style_edit_text</item>
+    </style>
+
+    <style name="AuthenticationLabel" parent="TextAppearance.AppCompat.Medium">
+        <item name="android:layout_width">wrap_content</item>
+        <item name="android:layout_height">50dp</item>
+        <item name="android:layout_marginStart">@dimen/screen_edge_left_and_right_margins</item>
+        <item name="android:paddingStart">@dimen/edit_text_margin</item>
+        <item name="android:maxLines">1</item>
+        <item name="android:drawablePadding">@dimen/edit_text_drawable_padding</item>
         <item name="android:fontFamily">sans-serif</item>
         <item name="android:background">@drawable/style_edit_text</item>
     </style>

build.gradle

@@ -6,9 +6,11 @@ buildscript {
         google()
         jcenter()
     }
+
     dependencies {
         classpath 'com.android.tools.build:gradle:3.0.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:${versions.kotlin}"
+        classpath "org.jetbrains.dokka:dokka-gradle-plugin:${versions.dokka}"
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -19,6 +21,8 @@ allprojects {
     repositories {
         google()
         jcenter()
+        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
+        maven { url "https://jitpack.io" }
     }
 
     apply from: rootProject.file('dependencies.gradle')

circle.yml

@@ -9,6 +9,8 @@ machine:
     ANDROID_HOME: /usr/local/android-sdk-linux
     GRADLE_OPTS: '-Xmx1024m -Dorg.gradle.jvmargs="-Xmx1024m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError"'
     JAVA_OPTS: "-Xms518m -Xmx1024m"
+  pre:
+    - git clone https://github.com/RocketChat/Rocket.Chat.Kotlin.SDK.git Rocket.Chat.Kotlin.Sdk
 
 dependencies:
   pre:
@@ -28,14 +30,18 @@ dependencies:
 #    - echo $GOOGLE_SERVICES_BASE64 | base64 --decode > app/src/release/google-services.json
 #   - echo $API_KEY_STRINGS_BASE64 | base64 --decode > app/src/release/res/values/api_key_strings.xml
 
+    - mkdir -p $ANDROID_HOME/licenses/  
+    - echo 8933bad161af4178b1185d1a37fbf41ea5269c55 >> $ANDROID_HOME/licenses/android-sdk-license
+    - echo d56f5187479451eabf01fb78af6dfcb131a6481e >> $ANDROID_HOME/licenses/android-sdk-license  
     - echo y | android update sdk --no-ui --all --filter tools,platform-tools
     - echo y | android update sdk --no-ui --all --filter android-27
     - echo y | android update sdk --no-ui --all --filter extra-android-m2repository,extra-android-support
     - echo y | android update sdk --no-ui --all --filter extra-google-m2repository,extra-google-google_play_services
     - echo y | android update sdk --no-ui --all --filter build-tools-27.0.0
+      #- yes | sdkmanager --licenses  
   cache_directories:
-    - /usr/local/android-sdk-linux/tools
-    - /usr/local/android-sdk-linux/build-tools/27.0.0
+          #- /usr/local/android-sdk-linux/tools
+          #- /usr/local/android-sdk-linux/build-tools/27.0.0
 
 test:
   override:

dependencies.gradle

@@ -6,17 +6,19 @@ ext {
         compileSdk        : 27,
         targetSdk         : 27,
         buildTools        : '27.0.0',
-        kotlin            : '1.2.0',
+        kotlin            : '1.2.10',
+        coroutine         : '0.20',
+        dokka             : '0.9.15',
 
         // Main dependencies
-        support           : '27.0.0',
+        support           : '27.0.2',
         constraintLayout  : '1.0.2',
-        dagger            : '2.11',
+        dagger            : '2.13',
         exoPlayer         : '2.6.0',
-        room              : '1.0.0-beta1',
+        room              : '1.0.0',
         rxjava            : '2.1.4',
         rxandroid         : '2.0.1',
-        moshi             : '1.5.0',
+        moshi             : '1.6.0-SNAPSHOT',
         okhttp            : '3.9.0',
         timber            : '4.5.1',
         threeTenABP       : '1.0.5',
@@ -33,13 +35,16 @@ ext {
     ]
 
     libraries = [
-        kotlin              : "org.jetbrains.kotlin:kotlin-stdlib-jre7:${versions.kotlin}",
+        kotlin              : "org.jetbrains.kotlin:kotlin-stdlib-jre8:${versions.kotlin}",
+        coroutines          : "org.jetbrains.kotlinx:kotlinx-coroutines-core:${versions.coroutine}",
+        coroutinesAndroid   : "org.jetbrains.kotlinx:kotlinx-coroutines-android:${versions.coroutine}",
 
         appCompat           : "com.android.support:appcompat-v7:${versions.support}",
         annotations         : "com.android.support:support-annotations:${versions.support}",
         recyclerview        : "com.android.support:recyclerview-v7:${versions.support}",
         design              : "com.android.support:design:${versions.support}",
         constraintLayout    : "com.android.support.constraint:constraint-layout:${versions.constraintLayout}",
+        cardView            : "com.android.support:cardview-v7:${versions.support}",
 
         dagger              : "com.google.dagger:dagger:${versions.dagger}",
         daggerSupport       : "com.google.dagger:dagger-android-support:${versions.dagger}",
@@ -55,6 +60,7 @@ ext {
         rxandroid           : "io.reactivex.rxjava2:rxandroid:${versions.rxandroid}",
 
         moshi               : "com.squareup.moshi:moshi:${versions.moshi}",
+        moshiKotlin         : "com.squareup.moshi:moshi-kotlin:${versions.moshi}",
         okhttp              : "com.squareup.okhttp3:okhttp:${versions.okhttp}",
         okhttpLogger        : "com.squareup.okhttp3:logging-interceptor:${versions.okhttp}",
 

settings.gradle

-include ':app', ':player'
+include ':app', 'common', 'core', ':player'
+
+project(':common').projectDir = new File(settingsDir, '../Rocket.Chat.Kotlin.Sdk/common')
+project(':core').projectDir = new File(settingsDir, '../Rocket.Chat.Kotlin.Sdk/core')
\ No newline at end of file