Merge pull request #681 from filipedelimabrito/feature/show-chat-list-using-sdk

[NEW] Show list of chats using the SDK (pure online)

app/build.gradle

@@ -78,6 +78,8 @@ dependencies {
 
     implementation libraries.aVLoadingIndicatorView
 
+    implementation libraries.textDrawable
+
     testImplementation libraries.junit
     androidTestImplementation (libraries.expressoCore , {
         exclude group: 'com.android.support', module: 'support-annotations'

app/src/main/AndroidManifest.xml

@@ -30,7 +30,7 @@
         </activity>
 
         <activity
-            android:name=".app.MainActivity"
+            android:name=".chatrooms.ui.MainActivity"
             android:theme="@style/ChatListTheme" />
 
         <activity

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

 import android.content.Context
 import chat.rocket.android.R
-import org.threeten.bp.LocalDate
-import org.threeten.bp.LocalDateTime
-import org.threeten.bp.Period
+import org.threeten.bp.*
 import org.threeten.bp.format.DateTimeFormatter
 import org.threeten.bp.format.FormatStyle
 import org.threeten.bp.format.TextStyle
@@ -14,20 +12,20 @@ object DateTimeHelper {
     private val lastWeek = today.minusWeeks(1)
 
     /**
-     * Returns a date from a LocalDateTime or the textual representation if the LocalDateTime has a max period of a week from the current date.
+     * Returns a date from a [LocalDateTime] or the textual representation if the [LocalDateTime] has a max period of a week from the current date.
      *
-     * @param localDateTime The LocalDateTime.
+     * @param localDateTime The [LocalDateTime].
      * @param context The context.
-     * @return The date or the textual representation from a LocalDateTime.
+     * @return The date or the textual representation from a [LocalDateTime].
      */
     fun getDate(localDateTime: LocalDateTime, context: Context): String {
         val localDate = localDateTime.toLocalDate()
         return when (localDate) {
-            today -> localDateTime.toLocalTime().toString()
+            today -> formatLocalTime(localDateTime.toLocalTime())
             yesterday -> context.getString(R.string.msg_yesterday)
             else -> {
                 if (Period.between(lastWeek, localDate).days <= 0) {
-                    formatDate(localDate)
+                    formatLocalDate(localDate)
                 } else {
                     localDate.dayOfWeek.getDisplayName(TextStyle.FULL, Locale.getDefault())
                 }
@@ -36,18 +34,33 @@ object DateTimeHelper {
     }
 
     /**
-     * Returns a time from a LocalDateTime.
+     * Returns a time from a [LocalDateTime].
      *
-     * @param localDateTime The LocalDateTime.
-     * @return The time from a LocalDateTime.
+     * @param localDateTime The [LocalDateTime].
+     * @return The time from a [LocalDateTime].
      */
     fun getTime(localDateTime: LocalDateTime): String {
         val formatter = DateTimeFormatter.ofLocalizedTime(FormatStyle.SHORT)
         return localDateTime.toLocalTime().format(formatter).toString()
     }
 
-    private fun formatDate(localDate: LocalDate): String {
+    /**
+     * Returns a [LocalDateTime] from a [Long].
+     *
+     * @param long The [Long]
+     * @return The [LocalDateTime] from a [Long].
+     */
+    fun getLocalDateTime(long: Long): LocalDateTime {
+        return LocalDateTime.ofInstant(Instant.ofEpochMilli(long), ZoneId.systemDefault())
+    }
+
+    private fun formatLocalDate(localDate: LocalDate): String {
         val formatter = DateTimeFormatter.ofLocalizedDate(FormatStyle.SHORT)
         return localDate.format(formatter).toString()
     }
+
+    private fun formatLocalTime(localTime: LocalTime): String {
+        val formatter = DateTimeFormatter.ofLocalizedTime(FormatStyle.SHORT)
+        return localTime.format(formatter).toString()
+    }
 }
\ No newline at end of file

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

 import android.content.Context
+import android.graphics.Typeface
 import android.graphics.drawable.Drawable
 import android.support.v4.content.ContextCompat
 import android.support.v4.graphics.drawable.DrawableCompat
 import android.widget.EditText
 import android.widget.TextView
 import chat.rocket.android.R
+import chat.rocket.android.helper.TextHelper
+import com.amulyakhare.textdrawable.TextDrawable
 
 object DrawableHelper {
-
+    private val AVATAR_BACKGROUND_HEXADECIMAL_COLORS = intArrayOf(
+            0xFFF44336.toInt(), 0xFFE91E63.toInt(), 0xFF9C27B0.toInt(), 0xFF673AB7.toInt(), 0xFF3F51B5.toInt(),
+            0xFF2196F3.toInt(), 0xFF03A9F4.toInt(), 0xFF00BCD4.toInt(), 0xFF009688.toInt(), 0xFF4CAF50.toInt(),
+            0xFF8BC34A.toInt(), 0xFFCDDC39.toInt(), 0xFFFFC107.toInt(), 0xFFFF9800.toInt(), 0xFFFF5722.toInt(),
+            0xFF795548.toInt(), 0xFF9E9E9E.toInt(), 0xFF607D8B.toInt())
     /**
      * Returns a Drawable from its ID.
      *
@@ -37,7 +44,7 @@ object DrawableHelper {
      * @see wrapDrawables
      * @see tintDrawable
      */
-    fun wrapDrawable(drawable: Drawable) = DrawableCompat.wrap(drawable)
+    fun wrapDrawable(drawable: Drawable): Drawable = DrawableCompat.wrap(drawable)
 
     /**
      * Tints an array of Drawable.
@@ -116,4 +123,29 @@ object DrawableHelper {
         }
         return userStatusDrawable
     }
+
+    /**
+     * Returns a drawable with the first character from a string.
+     *
+     * @param string The string to get its first character and to get the avatar background color.
+     * @return A drawable with the string first character.
+     */
+    fun getTextDrawable(string: String): Drawable {
+        return TextDrawable.builder()
+                .beginConfig()
+                .useFont(Typeface.SANS_SERIF)
+                .endConfig()
+                .buildRound(TextHelper.getFirstCharacter(string), getAvatarBackgroundColor(string))
+    }
+
+    /**
+     * Returns a background color to be rendered on the avatar.
+     *
+     * @param string Gets the background color based on the provided string.
+     * @return A hexadecimal color.
+     * @see (Rocket.Chat/server/startup/avatar.js)
+     */
+    private fun getAvatarBackgroundColor(string: String): Int {
+        return AVATAR_BACKGROUND_HEXADECIMAL_COLORS[string.length % AVATAR_BACKGROUND_HEXADECIMAL_COLORS.size]
+    }
 }
\ 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 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 : AppCompatActivity() {
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
-
-        addFragment("ChatListFragment", R.id.fragment_container) {
-            ChatListFragment()
-        }
-    }
-}
\ No newline at end of file

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

-package chat.rocket.android.app.chatlist
-
-import chat.rocket.android.app.User
-import org.threeten.bp.LocalDateTime
-
-data class Chat(val user: User,
-                val name: String,
-                val type: String,
-                // Todo replace to Message type instead of String
-                val lastMessage: String,
-                val lastMessageDateTime: LocalDateTime,
-                val totalUnreadMessages: Int)
\ 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.os.Bundle
-import android.support.v4.app.Fragment
-import android.support.v7.widget.DividerItemDecoration
-import android.support.v7.widget.LinearLayoutManager
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import chat.rocket.android.R
-import chat.rocket.android.app.User
-import kotlinx.android.synthetic.main.fragment_chat_list.*
-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 onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
-        showChatList(createDumpData())
-    }
-
-    // This is just a sample showing 8 chat rooms (aka user subscription). We need to get it rid in a real word. REMARK: remove this comment and this method.
-    private fun createDumpData(): List<Chat> {
-        val filipe = User("1", "Filipe Brito", "filipe.brito", "online", "https://open.rocket.chat/avatar/filipe.brito")
-        val lucio = User("2", "Lucio Maciel", "Lucio Maciel", "busy", "https://open.rocket.chat/avatar/lucio.maciel")
-        val leonardo = User("3", "Leonardo Aramaki", "leonardo.aramaki", "busy", "https://open.rocket.chat/avatar/leonardo.aramaki")
-        val sing = User("4", "Filipe Brito", "filipe.brito", "online", "https://open.rocket.chat/avatar/filipe.brito")
-        val hetal = User("5", "Filipe Brito", "filipe.brito", "online", "https://open.rocket.chat/avatar/filipe.brito")
-        val matheus = User("6", "Filipe Brito", "filipe.brito", "online", "https://open.rocket.chat/avatar/filipe.brito")
-        val bestrun = User("7", "Filipe Brito", "filipe.brito", "online", "https://open.rocket.chat/avatar/filipe.brito")
-        val djc = User("8", "3djc", "3djc", "online", "https://open.rocket.chat/avatar/filipe.brito")
-
-        val dumpChat1 = Chat(leonardo,
-                "Leonardo Aramaki",
-                "d",
-                "Type something",
-                LocalDateTime.of(2017, 11, 21,1, 3),
-                1)
-        val dumpChat2 = Chat(filipe,
-                "Filipe Brito",
-                "d",
-                "Type something...Type something...Type something",
-                LocalDateTime.of(2017, 11, 22,1, 3),
-                150)
-        val dumpChat3 = Chat(lucio,
-                "Lucio Maciel",
-                "d",
-                "Type something",
-                LocalDateTime.of(2017, 11, 17,1, 3),
-                0)
-        val dumpChat4 = Chat(sing,
-                "mobile-internal",
-                "p",
-                "@aaron.ogle @rafael.kellermann same problem over here. Although all the servers show up on the selection.",
-                LocalDateTime.of(2017, 11, 15,1, 3),
-                0)
-        val dumpChat5 = Chat(hetal,
-                "general",
-                "c",
-                "Has joined the channel.",
-                LocalDateTime.of(2017, 11, 13,1, 3),
-                0)
-        val dumpChat6 = Chat(matheus,
-                "androidnativeapp",
-                "c",
-                "Yes @sttyru, but you'll need to implement from the ground up following the docs at docs.rocket.chat where you can see the REST (HTTP) and Real-Time (WebSockets) calls.",
-                LocalDateTime.of(2017, 11, 14,1, 3),
-                0)
-        val dumpChat7 = Chat(bestrun,
-                "androidnativeapp-2",
-                "c",
-                "Just downloaded .zip and imported into Android Studio then build the project.",
-                LocalDateTime.of(2017, 11, 4,12, 47),
-                0)
-        val dumpChat8 = Chat(djc,
-                "iosnativeapp",
-                "c",
-                "Ok, got confused by the blog announcement that shows a screenshot with github oAuth ! Sorry !",
-                LocalDateTime.of(2017, 11, 4,12, 43),
-                0)
-
-        // creates a list of chat sorted by lastMessageDateTime attribute.
-        return listOf(dumpChat1, dumpChat2, dumpChat3, dumpChat4, dumpChat5, dumpChat6, dumpChat7, dumpChat8).sortedByDescending { chat -> chat.lastMessageDateTime }
-    }
-
-    // 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>) {
-        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

@@ -8,7 +8,7 @@ import android.view.View
 import android.view.ViewGroup
 import chat.rocket.android.R
 import chat.rocket.android.app.User
-import kotlinx.android.synthetic.main.fragment_chat_list.*
+import kotlinx.android.synthetic.main.fragment_chat_rooms.*
 import org.threeten.bp.LocalDateTime
 
 class MessageFragment : Fragment() {

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

@@ -3,7 +3,7 @@ package chat.rocket.android.authentication.presentation
 import android.content.Context
 import android.content.Intent
 import chat.rocket.android.R
-import chat.rocket.android.app.MainActivity
+import chat.rocket.android.chatrooms.ui.MainActivity
 import chat.rocket.android.authentication.login.ui.LoginFragment
 import chat.rocket.android.authentication.signup.ui.SignupFragment
 import chat.rocket.android.authentication.twofactor.ui.TwoFAFragment
@@ -50,10 +50,10 @@ class AuthenticationNavigator(internal val activity: AuthenticationActivity, int
     }
 
     fun toChatList() {
-        val chatRoom = Intent(activity, MainActivity::class.java).apply {
+        val chatList = Intent(activity, MainActivity::class.java).apply {
             //TODO any parameter to pass
         }
-        activity.startActivity(chatRoom)
+        activity.startActivity(chatList)
         activity.finish()
     }
 }

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

@@ -12,6 +12,7 @@ import kotlinx.coroutines.experimental.Job
 @Module
 @PerFragment
 class SignupFragmentModule {
+
     @Provides
     fun signupView(frag: SignupFragment): SignupView {
         return frag
@@ -26,4 +27,4 @@ class SignupFragmentModule {
     fun provideCancelStrategy(owner: LifecycleOwner, jobs: Job): CancelStrategy {
         return CancelStrategy(owner, jobs)
     }
-}
+}
\ No newline at end of file

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

@@ -4,8 +4,9 @@ import chat.rocket.android.authentication.signup.ui.SignupFragment
 import dagger.Module
 import dagger.android.ContributesAndroidInjector
 
-@Module abstract class SignupFragmentProvider {
+@Module
+abstract class SignupFragmentProvider {
 
-    @ContributesAndroidInjector(modules = arrayOf(SignupFragmentModule::class))
+    @ContributesAndroidInjector(modules = [SignupFragmentModule::class])
     abstract fun provideSignupFragment(): SignupFragment
-}
+}
\ No newline at end of file

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

@@ -153,4 +153,4 @@ class SignupFragment : Fragment(), SignupView {
         text_password.isEnabled = value
         text_email.isEnabled = value
     }
-}
+}
\ No newline at end of file

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

@@ -12,6 +12,7 @@ import kotlinx.coroutines.experimental.Job
 @Module
 @PerFragment
 class TwoFAFragmentModule {
+
     @Provides
     fun loginView(frag: TwoFAFragment): TwoFAView {
         return frag

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

@@ -6,6 +6,6 @@ import dagger.android.ContributesAndroidInjector
 
 @Module abstract class TwoFAFragmentProvider {
 
-    @ContributesAndroidInjector(modules = arrayOf(TwoFAFragmentModule::class))
+    @ContributesAndroidInjector(modules = [TwoFAFragmentModule::class])
     abstract fun provideTwoFAFragment(): TwoFAFragment
 }

app/src/main/java/chat/rocket/android/chatrooms/di/ChatRoomsFragmentModule.kt

+package chat.rocket.android.chatrooms.di
+
+import android.arch.lifecycle.LifecycleOwner
+import chat.rocket.android.chatrooms.presentation.ChatRoomsView
+import chat.rocket.android.chatrooms.ui.ChatRoomsFragment
+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 ChatRoomsFragmentModule {
+
+    @Provides
+    fun chatRoomsView(frag: ChatRoomsFragment): ChatRoomsView {
+        return frag
+    }
+
+    @Provides
+    fun provideLifecycleOwner(frag: ChatRoomsFragment): LifecycleOwner {
+        return frag
+    }
+
+    @Provides
+    fun provideCancelStrategy(owner: LifecycleOwner, jobs: Job): CancelStrategy {
+        return CancelStrategy(owner, jobs)
+    }
+
+    @Provides
+    fun provideJob(): Job {
+        return Job()
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/chatrooms/di/ChatRoomsFragmentProvider.kt

+package chat.rocket.android.chatrooms.di
+
+import chat.rocket.android.chatrooms.ui.ChatRoomsFragment
+import dagger.Module
+import dagger.android.ContributesAndroidInjector
+
+@Module
+abstract class ChatRoomsFragmentProvider {
+
+    @ContributesAndroidInjector(modules = [ChatRoomsFragmentModule::class])
+    abstract fun provideChatRoomsFragment(): ChatRoomsFragment
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/chatrooms/presentation/ChatRoomsPresenter.kt

+package chat.rocket.android.chatrooms.presentation
+
+import chat.rocket.android.core.lifecycle.CancelStrategy
+import chat.rocket.android.util.launchUI
+import chat.rocket.core.RocketChatClient
+import chat.rocket.core.internal.rest.chatRooms
+import chat.rocket.core.model.ChatRoom
+import javax.inject.Inject
+
+class ChatRoomsPresenter @Inject constructor(private val view: ChatRoomsView, private val strategy: CancelStrategy) {
+    @Inject lateinit var client: RocketChatClient
+
+    fun chatRooms() {
+        launchUI(strategy) {
+            view.showLoading()
+            val chatRooms = client.chatRooms().update
+            val openChatRooms = getOpenChatRooms(chatRooms)
+            val sortedOpenChatRooms = sortChatRooms(openChatRooms)
+            view.showChatRooms(sortedOpenChatRooms.toMutableList())
+            view.hideLoading()
+        }
+    }
+
+    private fun getOpenChatRooms(chatRooms: List<ChatRoom>): List<ChatRoom> {
+        return chatRooms.filter(ChatRoom::open)
+    }
+
+    private fun sortChatRooms(chatRooms: List<ChatRoom>): List<ChatRoom> {
+        return chatRooms.sortedByDescending {
+            chatRoom -> chatRoom.lastMessage?.timestamp
+        }
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/chatrooms/presentation/ChatRoomsView.kt

+package chat.rocket.android.chatrooms.presentation
+
+import chat.rocket.android.core.behaviours.LoadingView
+import chat.rocket.android.core.behaviours.MessageView
+import chat.rocket.core.model.ChatRoom
+
+interface ChatRoomsView : LoadingView, MessageView {
+
+    /**
+     * Shows the chat rooms.
+     *
+     * @param dataSet The data set to show.
+     */
+    fun showChatRooms(dataSet: MutableList<ChatRoom>)
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/app/chatlist/ChatListAdapter.kt → app/src/main/java/chat/rocket/android/chatrooms/ui/ChatRoomsAdapter.kt

-package chat.rocket.android.app.chatlist
+package chat.rocket.android.chatrooms.ui
 
 import DateTimeHelper
 import DrawableHelper
 import android.content.Context
 import android.support.v7.widget.RecyclerView
-import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.ImageView
 import android.widget.TextView
 import chat.rocket.android.R
+import chat.rocket.android.helper.UrlHelper
+import chat.rocket.android.util.inflate
+import chat.rocket.android.util.setVisibility
+import chat.rocket.android.util.textContent
+import chat.rocket.common.model.BaseRoom.RoomType
+import chat.rocket.core.model.ChatRoom
 import com.facebook.drawee.view.SimpleDraweeView
 import kotlinx.android.synthetic.main.item_chat.view.*
 
-class ChatListAdapter(private var dataSet: MutableList<Chat>, private val context: Context) : RecyclerView.Adapter<ChatListAdapter.ViewHolder>() {
+class ChatRoomsAdapter(private var dataSet: MutableList<ChatRoom>, private val context: Context) : RecyclerView.Adapter<ChatRoomsAdapter.ViewHolder>() {
 
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        val view = LayoutInflater.from(parent.context).inflate(R.layout.item_chat, parent, false)
-        return ViewHolder(view)
-    }
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder = ViewHolder(parent.inflate(R.layout.item_chat))
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        val chat = dataSet[position]
+        val chatRoom = dataSet[position]
+        val chatRoomName = chatRoom.name
 
-        holder.userAvatar.setImageURI(chat.user.avatarUri)
-        holder.chatName.text = chat.name
-        holder.lastMessage.text = chat.lastMessage
-        holder.lastMessageDateTime.text = DateTimeHelper.getDate(chat.lastMessageDateTime, context)
+        holder.chatName.textContent = chatRoomName
 
-        when (chat.type) {
-            "p" -> DrawableHelper.compoundDrawable(holder.chatName, DrawableHelper.getDrawableFromId(R.drawable.ic_lock_outline_black, context))
-            "c" -> DrawableHelper.compoundDrawable(holder.chatName, DrawableHelper.getDrawableFromId(R.drawable.ic_hashtag_black, context))
-            "d" -> DrawableHelper.compoundDrawable(holder.chatName, DrawableHelper.getUserStatusDrawable(chat.user.status, context))
+        if (chatRoom.type == RoomType.ONE_TO_ONE) {
+            // TODO Check the best way to get the current server url.
+            val canonicalUrl = chatRoom.client.restUrl.toString()
+            holder.userAvatar.setImageURI(UrlHelper.getAvatarUrl(canonicalUrl, chatRoomName))
+            holder.userAvatar.setVisibility(true)
+        } else {
+            holder.roomAvatar.setImageDrawable(DrawableHelper.getTextDrawable(chatRoomName))
+            holder.roomAvatar.setVisibility(true)
         }
 
-        val totalUnreadMessage = chat.totalUnreadMessages
+        val totalUnreadMessage = chatRoom.unread
         when {
             totalUnreadMessage in 1..99 -> {
-                holder.unreadMessage.text = totalUnreadMessage.toString()
-                holder.unreadMessage.visibility = View.VISIBLE
+                holder.unreadMessage.textContent = totalUnreadMessage.toString()
+                holder.unreadMessage.setVisibility(true)
             }
             totalUnreadMessage > 99 -> {
-                holder.unreadMessage.text = context.getString(R.string.msg_more_than_ninety_nine_unread_messages)
-                holder.unreadMessage.visibility = View.VISIBLE
+                holder.unreadMessage.textContent = context.getString(R.string.msg_more_than_ninety_nine_unread_messages)
+                holder.unreadMessage.setVisibility(true)
             }
         }
+
+        val lastMessage = chatRoom.lastMessage
+        val lastMessageSender = lastMessage?.sender
+        if (lastMessage != null && lastMessageSender != null) {
+            val message = lastMessage.message
+            val senderUsername = lastMessageSender.username
+            when (senderUsername) {
+                chatRoomName -> {
+                    holder.lastMessage.textContent = message
+                }
+                // TODO Change to MySelf
+//                chatRoom.user?.username -> {
+//                    holder.lastMessage.textContent = context.getString(R.string.msg_you) + ": $message"
+//                }
+                else -> {
+                    holder.lastMessage.textContent = "@$senderUsername: $message"
+                }
+            }
+            val localDateTime = DateTimeHelper.getLocalDateTime(lastMessage.timestamp)
+            holder.lastMessageDateTime.textContent = DateTimeHelper.getDate(localDateTime, context)
+        }
     }
 
     override fun getItemCount(): Int = dataSet.size
 
+    override fun getItemViewType(position: Int): Int = position
+
     class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
         val userAvatar: SimpleDraweeView = itemView.image_user_avatar
+        val roomAvatar: ImageView = itemView.image_room_avatar
         val chatName: TextView = itemView.text_chat_name
         val lastMessage: TextView = itemView.text_last_message
         val lastMessageDateTime: TextView = itemView.text_last_message_date_time

app/src/main/java/chat/rocket/android/chatrooms/ui/ChatRoomsFragment.kt

+package chat.rocket.android.chatrooms.ui
+
+import android.os.Bundle
+import android.support.v4.app.Fragment
+import android.support.v7.widget.LinearLayoutManager
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Toast
+import chat.rocket.android.R
+import chat.rocket.android.chatrooms.presentation.ChatRoomsPresenter
+import chat.rocket.android.chatrooms.presentation.ChatRoomsView
+import chat.rocket.android.widget.DividerItemDecoration
+import chat.rocket.core.model.ChatRoom
+import dagger.android.support.AndroidSupportInjection
+import kotlinx.android.synthetic.main.fragment_chat_rooms.*
+import javax.inject.Inject
+
+class ChatRoomsFragment : Fragment(), ChatRoomsView {
+    @Inject lateinit var presenter: ChatRoomsPresenter
+
+    companion object {
+        fun newInstance() = ChatRoomsFragment()
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        AndroidSupportInjection.inject(this)
+    }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? = inflater.inflate(R.layout.fragment_chat_rooms, container, false)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        presenter.chatRooms()
+    }
+
+    override fun showChatRooms(dataSet: MutableList<ChatRoom>) {
+        activity?.apply {
+            recycler_view.layoutManager = LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false)
+            recycler_view.addItemDecoration(DividerItemDecoration(this, 144, 32))
+            recycler_view.adapter = ChatRoomsAdapter(dataSet, this)
+        }
+    }
+
+    override fun showLoading() = view_loading.show()
+
+    override fun hideLoading() = view_loading.hide()
+
+    override fun showMessage(message: String) = Toast.makeText(activity, message, Toast.LENGTH_SHORT).show()
+
+    override fun showGenericErrorMessage() = showMessage(getString(R.string.msg_generic_error))
+}
\ No newline at end of file

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

+package chat.rocket.android.chatrooms.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.util.addFragment
+import dagger.android.AndroidInjection
+import dagger.android.AndroidInjector
+import dagger.android.DispatchingAndroidInjector
+import dagger.android.support.HasSupportFragmentInjector
+import javax.inject.Inject
+
+class MainActivity : AppCompatActivity(), HasSupportFragmentInjector {
+    @Inject lateinit var fragmentDispatchingAndroidInjector: DispatchingAndroidInjector<Fragment>
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+
+        AndroidInjection.inject(this)
+
+        addFragment("ChatRoomsFragment", R.id.fragment_container) {
+            ChatRoomsFragment.newInstance()
+        }
+    }
+
+    override fun supportFragmentInjector(): AndroidInjector<Fragment> {
+        return fragmentDispatchingAndroidInjector
+    }
+}
\ No newline at end of file

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.di.AuthenticationModule
 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.chatrooms.di.ChatRoomsFragmentProvider
+import chat.rocket.android.chatrooms.ui.MainActivity
 import chat.rocket.android.dagger.scope.PerActivity
 import dagger.Module
 import dagger.android.ContributesAndroidInjector
 
-@Module abstract class ActivityBuilder {
+@Module
+abstract class ActivityBuilder {
 
     @PerActivity
     @ContributesAndroidInjector(modules = [AuthenticationModule::class,
-        LoginFragmentProvider::class,
         ServerFragmentProvider::class,
+        LoginFragmentProvider::class,
         SignupFragmentProvider::class,
         TwoFAFragmentProvider::class
     ])
-
     abstract fun bindAuthenticationActivity(): AuthenticationActivity
 
-    @ContributesAndroidInjector abstract fun bindMainActivity(): MainActivity
-}
+    @ContributesAndroidInjector(modules = [ChatRoomsFragmentProvider::class])
+    abstract fun bindMainActivity(): MainActivity
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/helper/TextHelper.kt

@@ -5,6 +5,7 @@ import android.text.Spanned
 import android.text.method.LinkMovementMethod
 import android.text.style.ClickableSpan
 import android.widget.TextView
+import chat.rocket.android.util.ifEmpty
 
 object TextHelper {
 
@@ -27,4 +28,15 @@ object TextHelper {
         textView.movementMethod = LinkMovementMethod.getInstance()
         textView.setText(spannableString, TextView.BufferType.SPANNABLE)
     }
+
+    /**
+     * Returns the first character from a string.
+     *
+     * @param string The string to get its first character.
+     * @return The first character from a string.
+     */
+    fun getFirstCharacter(string: String): String {
+        string.ifEmpty("?")
+        return string.substring(0, 1).toUpperCase()
+    }
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/helper/UrlHelper.kt

+package chat.rocket.android.helper
+
+object UrlHelper {
+
+    /**
+     * Returns the avatar URL.
+     *
+     * @param serverUrl The serverUrl.
+     * @param chatRoomName The chat room name.
+     * @return The avatar URL.
+     */
+    fun getAvatarUrl(serverUrl: String, chatRoomName: String): String = serverUrl + "avatar/" + chatRoomName
+}
\ No newline at end of file

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

@@ -6,7 +6,9 @@ import chat.rocket.android.R
 
 fun AppCompatActivity.addFragment(tag: String, layoutId: Int, newInstance: () -> Fragment) {
     val fragment = supportFragmentManager.findFragmentByTag(tag) ?: newInstance()
-    supportFragmentManager.beginTransaction().replace(layoutId, fragment, tag).commit()
+    supportFragmentManager.beginTransaction()
+            .replace(layoutId, fragment, tag)
+            .commit()
 }
 
 fun AppCompatActivity.addFragmentBackStack(tag: String, layoutId: Int, newInstance: () -> Fragment) {

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

@@ -14,10 +14,10 @@ fun String.ifEmpty(value: String): String {
 }
 
 fun View.setVisibility(value: Boolean) {
-    if (value) {
-        this.visibility = View.VISIBLE
+    visibility = if (value) {
+        View.VISIBLE
     } else {
-        this.visibility = View.GONE
+        View.GONE
     }
 }
 
@@ -34,5 +34,5 @@ var TextView.textContent: String
 var TextView.hintContent: String
     get() = hint.toString()
     set(value) {
-        text = value
+        hint = value
     }

app/src/main/java/chat/rocket/android/widget/DividerItemDecoration.kt

+package chat.rocket.android.widget
+
+import android.content.Context
+import android.graphics.Canvas
+import android.graphics.drawable.Drawable
+import android.support.annotation.DrawableRes
+import android.support.v4.content.ContextCompat
+import android.support.v7.widget.RecyclerView
+
+/**
+ * Adds a default or custom divider to specific item views from the adapter's data set.
+ * @see RecyclerView.ItemDecoration
+ */
+class DividerItemDecoration() : RecyclerView.ItemDecoration() {
+    private lateinit var divider: Drawable
+    private var boundStart = 0
+    private var boundRight = 0
+
+    // Default divider will be used.
+    constructor(context: Context) : this() {
+        val attrs = intArrayOf(android.R.attr.listDivider)
+        val styledAttributes = context.obtainStyledAttributes(attrs)
+        divider = styledAttributes.getDrawable(0)
+        styledAttributes.recycle()
+    }
+
+    // Default divider with custom boundaries (start and right) will be used.
+    constructor(context: Context, boundStart: Int, boundRight: Int) : this() {
+        val attrs = intArrayOf(android.R.attr.listDivider)
+        val styledAttributes = context.obtainStyledAttributes(attrs)
+        divider = styledAttributes.getDrawable(0)
+        styledAttributes.recycle()
+
+        this.boundStart = boundStart
+        this.boundRight = boundRight
+    }
+
+    // Custom divider will be used.
+    constructor(context: Context, @DrawableRes drawableResId: Int) : this() {
+        val customDrawable = ContextCompat.getDrawable(context, drawableResId)
+        if (customDrawable != null) {
+            divider = customDrawable
+        }
+    }
+
+    override fun onDraw(c: Canvas, parent: RecyclerView, state: RecyclerView.State) {
+        val left = parent.paddingLeft + boundStart
+        val right = (parent.width - parent.paddingRight) - boundRight
+
+        val childCount = parent.childCount
+        for (i in 0 until childCount) {
+            val child = parent.getChildAt(i)
+
+            val params = child.layoutParams as RecyclerView.LayoutParams
+
+            val top = child.bottom + params.bottomMargin
+            val bottom = top + divider.intrinsicHeight
+
+            divider.setBounds(left, top, right, bottom)
+            divider.draw(c)
+        }
+    }
+}
\ No newline at end of file

app/src/main/res/layout/fragment_chat_list.xml → app/src/main/res/layout/fragment_chat_rooms.xml

 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    tools:context=".chatrooms.ui.ChatRoomsFragment">
 
     <android.support.v7.widget.RecyclerView
         android:id="@+id/recycler_view"
@@ -24,4 +26,14 @@
         app:floatingSearch_searchBarMarginRight="4dp"
         app:floatingSearch_searchBarMarginTop="28dp" />
 
+    <com.wang.avi.AVLoadingIndicatorView
+        android:id="@+id/view_loading"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerInParent="true"
+        android:visibility="gone"
+        app:indicatorColor="@color/black"
+        app:indicatorName="BallPulseIndicator"
+        tools:visibility="visible" />
+
 </RelativeLayout>
\ No newline at end of file

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

@@ -4,20 +4,34 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:layout_marginBottom="16dp"
+    android:layout_marginBottom="12dp"
     android:layout_marginEnd="@dimen/screen_edge_left_and_right_margins"
     android:layout_marginStart="@dimen/screen_edge_left_and_right_margins"
-    android:layout_marginTop="16dp">
+    android:layout_marginTop="12dp">
 
-    <com.facebook.drawee.view.SimpleDraweeView
-        android:id="@+id/image_user_avatar"
-        android:layout_width="40dp"
-        android:layout_height="40dp"
+    <android.support.constraint.ConstraintLayout
+        android:id="@+id/avatar_container"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintLeft_toLeftOf="parent"
         app:layout_constraintRight_toLeftOf="@+id/middle_container"
-        app:layout_constraintTop_toTopOf="parent"
-        app:roundAsCircle="true" />
+        app:layout_constraintTop_toTopOf="parent">
+
+        <com.facebook.drawee.view.SimpleDraweeView
+            android:id="@+id/image_user_avatar"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:visibility="gone"
+            app:roundAsCircle="true" />
+
+        <ImageView
+            android:id="@+id/image_room_avatar"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:visibility="gone"
+            tools:ignore="contentDescription" />
+    </android.support.constraint.ConstraintLayout>
 
     <android.support.constraint.ConstraintLayout
         android:id="@+id/middle_container"
@@ -25,7 +39,7 @@
         android:layout_height="wrap_content"
         android:layout_marginEnd="16dp"
         android:layout_marginStart="16dp"
-        app:layout_constraintLeft_toRightOf="@+id/image_user_avatar"
+        app:layout_constraintLeft_toRightOf="@+id/avatar_container"
         app:layout_constraintRight_toLeftOf="@+id/right_container">
 
         <TextView
@@ -36,17 +50,16 @@
             android:drawablePadding="5dp"
             android:ellipsize="end"
             android:maxLines="1"
-            tools:text="Ronald Perkins" />
+            tools:text="General" />
 
         <TextView
             android:id="@+id/text_last_message"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
-            android:layout_marginTop="4dp"
             android:ellipsize="end"
-            android:maxLines="1"
+            android:maxLines="2"
             app:layout_constraintTop_toBottomOf="@+id/text_chat_name"
-            tools:text="Type something" />
+            tools:text="You: Type something" />
     </android.support.constraint.ConstraintLayout>
 
     <android.support.constraint.ConstraintLayout

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

@@ -34,6 +34,6 @@
     <string name="msg_content_description_log_in_using_meteor">Fazer login através do Meteor</string>
     <string name="msg_content_description_log_in_using_twitter">Fazer login através do Twitter</string>
     <string name="msg_content_description_log_in_using_gitlab">Fazer login através do Gitlab</string>
-    <string name="msg_content_description_chat_icon">Ícone do chat</string>
+    <string name="msg_you">Você</string>
 
 </resources>

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

@@ -14,4 +14,6 @@
     <color name="colorDividerMessageComposer">#D8D8D8</color>
 
     <color name="white">#FFFFFFFF</color>
+    <color name="black">#FF000000</color>
+
 </resources>
\ No newline at end of file

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

@@ -36,6 +36,6 @@
     <string name="msg_content_description_log_in_using_meteor">Login using Meteor</string>
     <string name="msg_content_description_log_in_using_twitter">Login using Twitter</string>
     <string name="msg_content_description_log_in_using_gitlab">Login using Gitlab</string>
-    <string name="msg_content_description_chat_icon">Chat icon</string>
+    <string name="msg_you">You</string>
 
 </resources>
\ No newline at end of file

build.gradle

@@ -8,7 +8,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        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}"
 
@@ -23,6 +23,7 @@ allprojects {
         jcenter()
         maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
         maven { url "https://jitpack.io" }
+        maven { url "http://dl.bintray.com/amulyakhare/maven" } // For TextDrawable.
     }
 
     apply from: rootProject.file('dependencies.gradle')

dependencies.gradle

@@ -23,11 +23,12 @@ ext {
         okhttp                 : '3.9.0',
         timber                 : '4.5.1',
         threeTenABP            : '1.0.5',
-        fresco                 : '1.5.0',
+        fresco                 : '1.7.1',
         frescoImageViewer      : '0.5.0',
         floatingSearchView     : '2.1.1',
         androidSvg             : '1.2.1',
         aVLoadingIndicatorView : '2.1.3',
+        textDrawable           : '1.0.2',
 
         // For testing
         junit                  : '4.12',
@@ -82,6 +83,8 @@ ext {
 
         aVLoadingIndicatorView : "com.wang.avi:library:${versions.aVLoadingIndicatorView}",
 
+        textDrawable           : "com.github.rocketchat:textdrawable:${versions.textDrawable}",
+
         // For testing
         toolsJar      : files(Jvm.current().getToolsJar()),
         junit         : "junit:junit:$versions.junit",