Merge pull request #1242 from RocketChat/new/check-permissions-ro-channel

[NEW] Check permissions to post messages to RO channels

app/src/main/java/chat/rocket/android/chatroom/presentation/ChatRoomPresenter.kt

@@ -12,8 +12,8 @@ import chat.rocket.android.chatroom.viewmodel.suggestion.CommandSuggestionViewMo
 import chat.rocket.android.chatroom.viewmodel.suggestion.PeopleSuggestionViewModel
 import chat.rocket.android.core.behaviours.showMessage
 import chat.rocket.android.core.lifecycle.CancelStrategy
+import chat.rocket.android.helper.UserHelper
 import chat.rocket.android.infrastructure.LocalRepository
-import chat.rocket.android.infrastructure.username
 import chat.rocket.android.server.domain.*
 import chat.rocket.android.server.infraestructure.ConnectionManagerFactory
 import chat.rocket.android.server.infraestructure.state
@@ -48,12 +48,13 @@ class ChatRoomPresenter @Inject constructor(
     getSettingsInteractor: GetSettingsInteractor,
     serverInteractor: GetCurrentServerInteractor,
     private val getChatRoomsInteractor: GetChatRoomsInteractor,
-    private val permissions: GetPermissionsInteractor,
+    private val permissions: PermissionsInteractor,
     private val uriInteractor: UriInteractor,
     private val messagesRepository: MessagesRepository,
     private val usersRepository: UsersRepository,
     private val roomsRepository: RoomRepository,
     private val localRepository: LocalRepository,
+    private val userHelper: UserHelper,
     factory: ConnectionManagerFactory,
     private val mapper: ViewModelMapper,
     private val jobSchedulerInteractor: JobSchedulerInteractor
@@ -70,6 +71,13 @@ class ChatRoomPresenter @Inject constructor(
     private val stateChannel = Channel<State>()
     private var lastState = manager.state
 
+    fun setupChatRoom() {
+        launchUI(strategy) {
+            val canPost = permissions.canPostToReadOnlyChannels()
+            view.onRoomChanged(canPost)
+        }
+    }
+
     fun loadMessages(chatRoomId: String, chatRoomType: String, offset: Long = 0) {
         this.chatRoomId = chatRoomId
         this.chatRoomType = chatRoomType
@@ -127,7 +135,7 @@ class ChatRoomPresenter @Inject constructor(
                 // ignore message for now, will receive it on the stream
                 val id = UUID.randomUUID().toString()
                 val message = if (messageId == null) {
-                    val username = localRepository.username()
+                    val username = userHelper.username()
                     val newMessage = Message(
                         id = id,
                         roomId = chatRoomId,
@@ -532,7 +540,8 @@ class ChatRoomPresenter @Inject constructor(
         launchUI(strategy) {
             try {
                 retryIO("joinChat($chatRoomId)") { client.joinChat(chatRoomId) }
-                view.onJoined()
+                val canPost = permissions.canPostToReadOnlyChannels()
+                view.onJoined(canPost)
             } catch (ex: RocketChatException) {
                 Timber.e(ex)
             }
@@ -545,7 +554,7 @@ class ChatRoomPresenter @Inject constructor(
     fun react(messageId: String, emoji: String) {
         launchUI(strategy) {
             try {
-                retryIO("toogleEmoji($messageId, $emoji)") {
+                retryIO("toggleEmoji($messageId, $emoji)") {
                     client.toggleReaction(messageId, emoji.removeSurrounding(":"))
                 }
             } catch (ex: RocketChatException) {

app/src/main/java/chat/rocket/android/chatroom/presentation/ChatRoomView.kt

@@ -109,8 +109,10 @@ interface ChatRoomView : LoadingView, MessageView {
     fun populateRoomSuggestions(chatRooms: List<ChatRoomSuggestionViewModel>)
     /**
      * This user has joined the chat callback.
+     *
+     * @param canPost Whether the user can post a message or not.
      */
-    fun onJoined()
+    fun onJoined(canPost: Boolean)
 
     fun showReactionsPopup(messageId: String)
 
@@ -120,4 +122,6 @@ interface ChatRoomView : LoadingView, MessageView {
      * @param commands The list of available commands.
      */
     fun populateCommandSuggestions(commands: List<CommandSuggestionViewModel>)
+
+    fun onRoomChanged(canPost: Boolean)
 }
\ No newline at end of file

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

@@ -27,22 +27,25 @@ fun Context.chatRoomIntent(
     chatRoomType: String,
     isChatRoomReadOnly: Boolean,
     chatRoomLastSeen: Long,
-    isChatRoomSubscribed: Boolean = true
+    isChatRoomSubscribed: Boolean = true,
+    isChatRoomOwner: Boolean = false
 ): Intent {
     return Intent(this, ChatRoomActivity::class.java).apply {
         putExtra(INTENT_CHAT_ROOM_ID, chatRoomId)
         putExtra(INTENT_CHAT_ROOM_NAME, chatRoomName)
         putExtra(INTENT_CHAT_ROOM_TYPE, chatRoomType)
-        putExtra(INTENT_IS_CHAT_ROOM_READ_ONLY, isChatRoomReadOnly)
+        putExtra(INTENT_CHAT_ROOM_IS_READ_ONLY, isChatRoomReadOnly)
         putExtra(INTENT_CHAT_ROOM_LAST_SEEN, chatRoomLastSeen)
         putExtra(INTENT_CHAT_IS_SUBSCRIBED, isChatRoomSubscribed)
+        putExtra(INTENT_CHAT_ROOM_IS_OWNER, isChatRoomOwner)
     }
 }
 
 private const val INTENT_CHAT_ROOM_ID = "chat_room_id"
 private const val INTENT_CHAT_ROOM_NAME = "chat_room_name"
 private const val INTENT_CHAT_ROOM_TYPE = "chat_room_type"
-private const val INTENT_IS_CHAT_ROOM_READ_ONLY = "is_chat_room_read_only"
+private const val INTENT_CHAT_ROOM_IS_READ_ONLY = "chat_room_is_read_only"
+private const val INTENT_CHAT_ROOM_IS_OWNER = "chat_room_is_owner"
 private const val INTENT_CHAT_ROOM_LAST_SEEN = "chat_room_last_seen"
 private const val INTENT_CHAT_IS_SUBSCRIBED = "is_chat_room_subscribed"
 
@@ -59,6 +62,7 @@ class ChatRoomActivity : AppCompatActivity(), HasSupportFragmentInjector {
     private lateinit var chatRoomType: String
     private var isChatRoomReadOnly: Boolean = false
     private var isChatRoomSubscribed: Boolean = true
+    private var isChatRoomOwner: Boolean = false
     private var chatRoomLastSeen: Long = -1L
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -84,8 +88,11 @@ class ChatRoomActivity : AppCompatActivity(), HasSupportFragmentInjector {
         chatRoomType = intent.getStringExtra(INTENT_CHAT_ROOM_TYPE)
         requireNotNull(chatRoomType) { "no chat_room_type provided in Intent extras" }
 
-        isChatRoomReadOnly = intent.getBooleanExtra(INTENT_IS_CHAT_ROOM_READ_ONLY, true)
-        requireNotNull(chatRoomType) { "no is_chat_room_read_only provided in Intent extras" }
+        isChatRoomReadOnly = intent.getBooleanExtra(INTENT_CHAT_ROOM_IS_READ_ONLY, true)
+        requireNotNull(isChatRoomReadOnly) { "no chat_room_is_read_only provided in Intent extras" }
+
+        isChatRoomOwner = intent.getBooleanExtra(INTENT_CHAT_ROOM_IS_OWNER, false)
+        requireNotNull(isChatRoomOwner) { "no chat_room_is_owner provided in Intent extras" }
 
         setupToolbar()
 
@@ -96,7 +103,7 @@ class ChatRoomActivity : AppCompatActivity(), HasSupportFragmentInjector {
         if (supportFragmentManager.findFragmentByTag(TAG_CHAT_ROOM_FRAGMENT) == null) {
             addFragment(TAG_CHAT_ROOM_FRAGMENT, R.id.fragment_container) {
                 newInstance(chatRoomId, chatRoomName, chatRoomType, isChatRoomReadOnly, chatRoomLastSeen,
-                        isChatRoomSubscribed)
+                        isChatRoomSubscribed, isChatRoomOwner)
             }
         }
     }

app/src/main/java/chat/rocket/android/chatroom/ui/ChatRoomFragment.kt

@@ -44,7 +44,8 @@ fun newInstance(
     chatRoomType: String,
     isChatRoomReadOnly: Boolean,
     chatRoomLastSeen: Long,
-    isSubscribed: Boolean = true
+    isSubscribed: Boolean = true,
+    isChatRoomOwner: Boolean = false
 ): Fragment {
     return ChatRoomFragment().apply {
         arguments = Bundle(1).apply {
@@ -54,6 +55,7 @@ fun newInstance(
             putBoolean(BUNDLE_IS_CHAT_ROOM_READ_ONLY, isChatRoomReadOnly)
             putLong(BUNDLE_CHAT_ROOM_LAST_SEEN, chatRoomLastSeen)
             putBoolean(BUNDLE_CHAT_ROOM_IS_SUBSCRIBED, isSubscribed)
+            putBoolean(BUNDLE_CHAT_ROOM_IS_OWNER, isChatRoomOwner)
         }
     }
 }
@@ -65,6 +67,7 @@ private const val BUNDLE_IS_CHAT_ROOM_READ_ONLY = "is_chat_room_read_only"
 private const val REQUEST_CODE_FOR_PERFORM_SAF = 42
 private const val BUNDLE_CHAT_ROOM_LAST_SEEN = "chat_room_last_seen"
 private const val BUNDLE_CHAT_ROOM_IS_SUBSCRIBED = "chat_room_is_subscribed"
+private const val BUNDLE_CHAT_ROOM_IS_OWNER = "chat_room_is_owner"
 
 class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiReactionListener {
     @Inject
@@ -77,6 +80,7 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
     private lateinit var chatRoomType: String
     private var isSubscribed: Boolean = true
     private var isChatRoomReadOnly: Boolean = false
+    private var isChatRoomOwner: Boolean = false
     private lateinit var emojiKeyboardPopup: EmojiKeyboardPopup
     private var chatRoomLastSeen: Long = -1
     private lateinit var actionSnackbar: ActionSnackbar
@@ -106,6 +110,8 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
             isChatRoomReadOnly = bundle.getBoolean(BUNDLE_IS_CHAT_ROOM_READ_ONLY)
             isSubscribed = bundle.getBoolean(BUNDLE_CHAT_ROOM_IS_SUBSCRIBED)
             chatRoomLastSeen = bundle.getLong(BUNDLE_CHAT_ROOM_LAST_SEEN)
+            isChatRoomOwner = bundle.getBoolean(BUNDLE_CHAT_ROOM_IS_OWNER)
+
         } else {
             requireNotNull(bundle) { "no arguments supplied when the fragment was instantiated" }
         }
@@ -124,11 +130,11 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
         super.onViewCreated(view, savedInstanceState)
         setupToolbar(chatRoomName)
 
+        presenter.setupChatRoom()
         presenter.loadMessages(chatRoomId, chatRoomType)
         presenter.loadChatRooms()
         setupRecyclerView()
         setupFab()
-        setupMessageComposer()
         setupSuggestionsView()
         setupActionSnackbar()
         activity?.apply {
@@ -227,6 +233,10 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
         }
     }
 
+    override fun onRoomChanged(canPost: Boolean) {
+        setupMessageComposer(isChatRoomOwner || canPost)
+    }
+
     private fun toggleNoChatView(size: Int) {
         if (size == 0){
             image_chat_icon.setVisible(true)
@@ -517,12 +527,12 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
         }
     }
 
-    override fun onJoined() {
+    override fun onJoined(canPost: Boolean) {
         ui {
             input_container.setVisible(true)
             button_join_chat.setVisible(false)
             isSubscribed = true
-            setupMessageComposer()
+            setupMessageComposer(isChatRoomOwner)
         }
     }
 
@@ -553,8 +563,8 @@ class ChatRoomFragment : Fragment(), ChatRoomView, EmojiKeyboardListener, EmojiR
         }
     }
 
-    private fun setupMessageComposer() {
-        if (isChatRoomReadOnly) {
+    private fun setupMessageComposer(canPost: Boolean) {
+        if (!canPost && isChatRoomReadOnly) {
             text_room_is_read_only.setVisible(true)
             input_container.setVisible(false)
         } else if (!isSubscribed) {

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

 package chat.rocket.android.chatrooms.presentation
 
+import chat.rocket.android.R
 import chat.rocket.android.chatroom.viewmodel.ViewModelMapper
 import chat.rocket.android.core.lifecycle.CancelStrategy
 import chat.rocket.android.helper.ChatRoomsSortOrder
 import chat.rocket.android.helper.Constants
 import chat.rocket.android.helper.SharedPreferenceHelper
+import chat.rocket.android.helper.UserHelper
+import chat.rocket.android.infrastructure.LocalRepository
 import chat.rocket.android.main.presentation.MainNavigator
 import chat.rocket.android.server.domain.*
 import chat.rocket.android.server.infraestructure.ConnectionManager
@@ -23,6 +26,8 @@ import chat.rocket.core.internal.model.Subscription
 import chat.rocket.core.internal.realtime.socket.model.State
 import chat.rocket.core.internal.realtime.socket.model.StreamMessage
 import chat.rocket.core.internal.realtime.socket.model.Type
+import chat.rocket.core.internal.rest.me
+import chat.rocket.core.internal.rest.permissions
 import chat.rocket.core.internal.rest.spotlight
 import chat.rocket.core.model.ChatRoom
 import chat.rocket.core.model.Room
@@ -45,6 +50,9 @@ class ChatRoomsPresenter @Inject constructor(
     private val refreshSettingsInteractor: RefreshSettingsInteractor,
     private val viewModelMapper: ViewModelMapper,
     private val jobSchedulerInteractor: JobSchedulerInteractor,
+    private val permissionsInteractor: PermissionsInteractor,
+    private val localRepository: LocalRepository,
+    private val userHelper: UserHelper,
     settingsRepository: SettingsRepository,
     factory: ConnectionManagerFactory
 ) {
@@ -69,6 +77,8 @@ class ChatRoomsPresenter @Inject constructor(
                     refreshSettingsInteractor.refresh(currentServer)
                 }
                 view.updateChatRooms(getUserChatRooms())
+                val permissions = retryIO { client.permissions() }
+                permissionsInteractor.saveAll(permissions)
             } catch (ex: RocketChatException) {
                 ex.message?.let {
                     view.showMessage(it)
@@ -85,7 +95,8 @@ class ChatRoomsPresenter @Inject constructor(
     }
 
     fun loadChatRoom(chatRoom: ChatRoom) {
-        val roomName = if (chatRoom.type is RoomType.DirectMessage
+        val isDirectMessage = chatRoom.type is RoomType.DirectMessage
+        val roomName = if (isDirectMessage
             && chatRoom.fullName != null
             && settings.useRealName()) {
             chatRoom.fullName!!
@@ -93,10 +104,40 @@ class ChatRoomsPresenter @Inject constructor(
             chatRoom.name
         }
 
-        navigator.toChatRoom(chatRoom.id, roomName,
-            chatRoom.type.toString(), chatRoom.readonly ?: false,
-            chatRoom.lastSeen ?: -1,
-            chatRoom.open)
+        launchUI(strategy) {
+            val myself = getCurrentUser()
+            if (myself?.username == null) {
+                view.showMessage(R.string.msg_generic_error)
+            } else {
+                val isChatRoomOwner = chatRoom.user?.username == myself.username || isDirectMessage
+                navigator.toChatRoom(chatRoom.id, roomName,
+                    chatRoom.type.toString(), chatRoom.readonly ?: false,
+                    chatRoom.lastSeen ?: -1,
+                    chatRoom.open, isChatRoomOwner)
+            }
+        }
+    }
+
+    private suspend fun getCurrentUser(): User? {
+        userHelper.user()?.let {
+            return it
+        }
+        try {
+            val myself = retryIO { client.me() }
+            val user = User(
+                id = myself.id,
+                username = myself.username,
+                name = myself.name,
+                status = myself.status,
+                utcOffset = myself.utcOffset,
+                emails = null,
+                roles = myself.roles
+            )
+            localRepository.saveCurrentUser(url = currentServer, user = user)
+        } catch (ex: RocketChatException) {
+            Timber.e(ex)
+        }
+        return null
     }
 
     /**
@@ -415,7 +456,7 @@ class ChatRoomsPresenter @Inject constructor(
             val newRoom = ChatRoom(
                 id = room.id,
                 type = room.type,
-                user = room.user ?: user,
+                user = room.user,
                 status = getActiveUsersInteractor.getActiveUserByUsername(
                     currentServer,
                     room.name ?: name
@@ -454,7 +495,7 @@ class ChatRoomsPresenter @Inject constructor(
             val newRoom = ChatRoom(
                 id = subscription.roomId,
                 type = subscription.type,
-                user = subscription.user ?: user,
+                user = user,
                 status = getActiveUsersInteractor.getActiveUserByUsername(
                     currentServer,
                     subscription.name

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

@@ -25,10 +25,13 @@ import com.facebook.drawee.view.SimpleDraweeView
 import kotlinx.android.synthetic.main.item_chat.view.*
 import kotlinx.android.synthetic.main.unread_messages_badge.view.*
 
-class ChatRoomsAdapter(private val context: Context,
-                       private val settings: PublicSettings,
-                       private val localRepository: LocalRepository,
-                       private val listener: (ChatRoom) -> Unit) : RecyclerView.Adapter<ChatRoomsAdapter.ViewHolder>() {
+class ChatRoomsAdapter(
+    private val context: Context,
+    private val settings: PublicSettings,
+    private val localRepository: LocalRepository,
+    private val listener: (ChatRoom) -> Unit
+) : RecyclerView.Adapter<ChatRoomsAdapter.ViewHolder>() {
+
     var dataSet: MutableList<ChatRoom> = ArrayList()
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder = ViewHolder(parent.inflate(R.layout.item_chat))

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

@@ -23,7 +23,6 @@ import chat.rocket.android.helper.SharedPreferenceHelper
 import chat.rocket.android.infrastructure.LocalRepository
 import chat.rocket.android.server.domain.GetCurrentServerInteractor
 import chat.rocket.android.server.domain.SettingsRepository
-import chat.rocket.android.server.domain.showLastMessage
 import chat.rocket.android.util.extensions.*
 import chat.rocket.android.widget.DividerItemDecoration
 import chat.rocket.common.model.RoomType
@@ -37,10 +36,14 @@ import timber.log.Timber
 import javax.inject.Inject
 
 class ChatRoomsFragment : Fragment(), ChatRoomsView {
-    @Inject lateinit var presenter: ChatRoomsPresenter
-    @Inject lateinit var serverInteractor: GetCurrentServerInteractor
-    @Inject lateinit var settingsRepository: SettingsRepository
-    @Inject lateinit var localRepository: LocalRepository
+    @Inject
+    lateinit var presenter: ChatRoomsPresenter
+    @Inject
+    lateinit var serverInteractor: GetCurrentServerInteractor
+    @Inject
+    lateinit var settingsRepository: SettingsRepository
+    @Inject
+    lateinit var localRepository: LocalRepository
     private lateinit var preferences: SharedPreferences
     private var searchView: SearchView? = null
     private val handler = Handler()
@@ -136,9 +139,9 @@ class ChatRoomsFragment : Fragment(), ChatRoomsView {
                 })
 
                 val dialogSort = AlertDialog.Builder(context)
-                        .setTitle(R.string.dialog_sort_title)
-                        .setView(dialogLayout)
-                        .setPositiveButton("Done", { dialog, _ -> dialog.dismiss() })
+                    .setTitle(R.string.dialog_sort_title)
+                    .setView(dialogLayout)
+                    .setPositiveButton("Done", { dialog, _ -> dialog.dismiss() })
 
                 dialogSort.show()
             }
@@ -146,9 +149,9 @@ class ChatRoomsFragment : Fragment(), ChatRoomsView {
         return super.onOptionsItemSelected(item)
     }
 
-    private fun invalidateQueryOnSearch(){
+    private fun invalidateQueryOnSearch() {
         searchView?.let {
-            if (!searchView!!.isIconified){
+            if (!searchView!!.isIconified) {
                 queryChatRoomsByName(searchView!!.query.toString())
             }
         }
@@ -183,7 +186,7 @@ class ChatRoomsFragment : Fragment(), ChatRoomsView {
         ui { text_no_data_to_display.setVisible(true) }
     }
 
-    override fun showLoading(){
+    override fun showLoading() {
         ui { view_loading.setVisible(true) }
     }
 
@@ -240,19 +243,18 @@ class ChatRoomsFragment : Fragment(), ChatRoomsView {
         ui {
             recycler_view.layoutManager = LinearLayoutManager(it, LinearLayoutManager.VERTICAL, false)
             recycler_view.addItemDecoration(DividerItemDecoration(it,
-                    resources.getDimensionPixelSize(R.dimen.divider_item_decorator_bound_start),
-                    resources.getDimensionPixelSize(R.dimen.divider_item_decorator_bound_end)))
+                resources.getDimensionPixelSize(R.dimen.divider_item_decorator_bound_start),
+                resources.getDimensionPixelSize(R.dimen.divider_item_decorator_bound_end)))
             recycler_view.itemAnimator = DefaultItemAnimator()
             // TODO - use a ViewModel Mapper instead of using settings on the adapter
 
-            println(serverInteractor.get() + " -> ${settingsRepository.get(serverInteractor.get()!!).showLastMessage()}")
             val baseAdapter = ChatRoomsAdapter(it,
-                    settingsRepository.get(serverInteractor.get()!!), localRepository) {
-                chatRoom -> presenter.loadChatRoom(chatRoom)
+                settingsRepository.get(serverInteractor.get()!!), localRepository) { chatRoom ->
+                presenter.loadChatRoom(chatRoom)
             }
 
             sectionedAdapter = SimpleSectionedRecyclerViewAdapter(it,
-                    R.layout.item_chatroom_header, R.id.text_chatroom_header, baseAdapter)
+                R.layout.item_chatroom_header, R.id.text_chatroom_header, baseAdapter)
             recycler_view.adapter = sectionedAdapter
         }
     }

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

@@ -17,7 +17,7 @@ import chat.rocket.android.chatroom.service.MessageService
 import chat.rocket.android.dagger.qualifier.ForMessages
 import chat.rocket.android.helper.MessageParser
 import chat.rocket.android.infrastructure.LocalRepository
-import chat.rocket.android.infrastructure.SharedPrefsLocalRepository
+import chat.rocket.android.infrastructure.SharedPreferencesLocalRepository
 import chat.rocket.android.push.GroupedPush
 import chat.rocket.android.push.PushManager
 import chat.rocket.android.server.domain.*
@@ -108,11 +108,11 @@ class AppModule {
     @Singleton
     fun provideOkHttpClient(logger: HttpLoggingInterceptor): OkHttpClient {
         return OkHttpClient.Builder()
-                .addInterceptor(logger)
-                .connectTimeout(15, TimeUnit.SECONDS)
-                .readTimeout(20, TimeUnit.SECONDS)
-                .writeTimeout(15, TimeUnit.SECONDS)
-                .build()
+            .addInterceptor(logger)
+            .connectTimeout(15, TimeUnit.SECONDS)
+            .readTimeout(20, TimeUnit.SECONDS)
+            .writeTimeout(15, TimeUnit.SECONDS)
+            .build()
     }
 
     @Provides
@@ -158,8 +158,8 @@ class AppModule {
 
     @Provides
     @Singleton
-    fun provideLocalRepository(prefs: SharedPreferences): LocalRepository {
-        return SharedPrefsLocalRepository(prefs)
+    fun provideLocalRepository(prefs: SharedPreferences, moshi: Moshi): LocalRepository {
+        return SharedPreferencesLocalRepository(prefs, moshi)
     }
 
     @Provides
@@ -174,6 +174,12 @@ class AppModule {
         return SharedPreferencesSettingsRepository(localRepository)
     }
 
+    @Provides
+    @Singleton
+    fun providePermissionsRepository(localRepository: LocalRepository, moshi: Moshi): PermissionsRepository {
+        return SharedPreferencesPermissionsRepository(localRepository, moshi)
+    }
+
     @Provides
     @Singleton
     fun provideRoomRepository(): RoomRepository {
@@ -239,7 +245,7 @@ class AppModule {
 
     @Provides
     @Singleton
-    fun provideConfiguration(context: Application, client: OkHttpClient): SpannableConfiguration {
+    fun provideConfiguration(context: Application): SpannableConfiguration {
         val res = context.resources
         return SpannableConfiguration.builder(context)
             .theme(SpannableTheme.builder()
@@ -254,12 +260,6 @@ class AppModule {
         return MessageParser(context, configuration, settingsInteractor.get(url))
     }
 
-    @Provides
-    @Singleton
-    fun providePermissionInteractor(settingsRepository: SettingsRepository, serverRepository: CurrentServerRepository): GetPermissionsInteractor {
-        return GetPermissionsInteractor(settingsRepository, serverRepository)
-    }
-
     @Provides
     @Singleton
     fun provideAccountsRepository(preferences: SharedPreferences, moshi: Moshi): AccountsRepository =

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

@@ -3,7 +3,21 @@ package chat.rocket.android.dagger.module
 import android.content.Context
 import android.content.SharedPreferences
 import chat.rocket.android.infrastructure.LocalRepository
-import chat.rocket.android.infrastructure.SharedPrefsLocalRepository
+import chat.rocket.android.infrastructure.SharedPreferencesLocalRepository
+import chat.rocket.android.server.domain.CurrentServerRepository
+import chat.rocket.android.server.domain.GetCurrentServerInteractor
+import chat.rocket.android.server.infraestructure.SharedPrefsCurrentServerRepository
+import chat.rocket.android.util.AppJsonAdapterFactory
+import chat.rocket.android.util.TimberLogger
+import chat.rocket.common.internal.FallbackSealedClassJsonAdapter
+import chat.rocket.common.internal.ISO8601Date
+import chat.rocket.common.model.TimestampAdapter
+import chat.rocket.common.util.CalendarISO8601Converter
+import chat.rocket.common.util.Logger
+import chat.rocket.common.util.PlatformLogger
+import chat.rocket.core.internal.AttachmentAdapterFactory
+import chat.rocket.core.internal.ReactionsAdapter
+import com.squareup.moshi.Moshi
 import dagger.Module
 import dagger.Provides
 import javax.inject.Singleton
@@ -11,14 +25,53 @@ import javax.inject.Singleton
 @Module
 class LocalModule {
 
+    @Provides
+    @Singleton
+    fun providePlatformLogger(): PlatformLogger {
+        return TimberLogger
+    }
+
+    @Provides
+    @Singleton
+    fun provideCurrentServerRepository(prefs: SharedPreferences): CurrentServerRepository {
+        return SharedPrefsCurrentServerRepository(prefs)
+    }
+
+    @Provides
+    @Singleton
+    fun provideMoshi(
+        logger: PlatformLogger,
+        currentServerInteractor: GetCurrentServerInteractor
+    ): Moshi {
+        val url = currentServerInteractor.get() ?: ""
+        return Moshi.Builder()
+            .add(FallbackSealedClassJsonAdapter.ADAPTER_FACTORY)
+            .add(AppJsonAdapterFactory.INSTANCE)
+            .add(AttachmentAdapterFactory(Logger(logger, url)))
+            .add(
+                java.lang.Long::class.java,
+                ISO8601Date::class.java,
+                TimestampAdapter(CalendarISO8601Converter())
+            )
+            .add(
+                Long::class.java,
+                ISO8601Date::class.java,
+                TimestampAdapter(CalendarISO8601Converter())
+            )
+            .add(ReactionsAdapter())
+            .build()
+    }
+
     @Provides
     fun provideSharedPreferences(context: Context): SharedPreferences {
         return context.getSharedPreferences("rocket.chat", Context.MODE_PRIVATE)
     }
 
+
+
     @Provides
     @Singleton
-    fun provideLocalRepository(prefs: SharedPreferences): LocalRepository {
-        return SharedPrefsLocalRepository(prefs)
+    fun provideLocalRepository(sharedPreferences: SharedPreferences, moshi: Moshi): LocalRepository {
+        return SharedPreferencesLocalRepository(sharedPreferences, moshi)
     }
 }
\ No newline at end of file

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

+package chat.rocket.android.helper
+
+import chat.rocket.android.infrastructure.LocalRepository
+import chat.rocket.android.server.domain.GetCurrentServerInteractor
+import chat.rocket.android.server.domain.PublicSettings
+import chat.rocket.android.server.domain.SettingsRepository
+import chat.rocket.android.server.domain.useRealName
+import chat.rocket.common.model.User
+import javax.inject.Inject
+
+class UserHelper @Inject constructor(
+    private val localRepository: LocalRepository,
+    private val getCurrentServerInteractor: GetCurrentServerInteractor,
+    settingsRepository: SettingsRepository
+) {
+
+    private val settings: PublicSettings = settingsRepository.get(getCurrentServerInteractor.get()!!)
+
+    /**
+     * Return the display name for the given [user].
+     * If setting 'Use_Real_Name' is true then the real name will be given, or else
+     * the username without the '@' is yielded. The fallback for any case is the username, which
+     * could be null.
+     */
+    fun displayName(user: User): String? {
+        return if (settings.useRealName()) user.name ?: user.username else user.username
+    }
+
+    /**
+     * Return current logged user's display name.
+     *
+     * @see displayName
+     */
+    fun displayName(): String? {
+        user()?.let {
+            return displayName(it)
+        }
+        return null
+    }
+
+    /**
+     * Return current logged [User].
+     */
+    fun user(): User? {
+        return localRepository.getCurrentUser(serverUrl())
+    }
+
+    /**
+     * Return the username for the current logged [User].
+     */
+    fun username(): String? = user()?.username
+
+    /**
+     * Whether current [User] is admin on the current server.
+     */
+    fun isAdmin(): Boolean {
+        return user()?.roles?.find { it.equals("admin", ignoreCase = true) } != null
+    }
+
+    private fun serverUrl(): String {
+        return getCurrentServerInteractor.get()!!
+    }
+}
\ No newline at end of file

app/src/main/java/chat/rocket/android/infrastructure/LocalRepository.kt

 package chat.rocket.android.infrastructure
 
+import chat.rocket.common.model.User
+
 interface LocalRepository {
 
     fun save(key: String, value: String?)
@@ -14,12 +16,16 @@ interface LocalRepository {
     fun getLong(key: String, defValue: Long = -1L): Long
     fun clear(key: String)
     fun clearAllFromServer(server: String)
+    fun getCurrentUser(url: String): User?
+    fun saveCurrentUser(url: String, user: User)
 
     companion object {
         const val KEY_PUSH_TOKEN = "KEY_PUSH_TOKEN"
         const val MIGRATION_FINISHED_KEY = "MIGRATION_FINISHED_KEY"
         const val TOKEN_KEY = "token_"
         const val SETTINGS_KEY = "settings_"
+        const val PERMISSIONS_KEY = "permissions_"
+        const val USER_KEY = "user_"
         const val CURRENT_USERNAME_KEY = "username_"
     }
 }

app/src/main/java/chat/rocket/android/infrastructure/SharedPrefsLocalRepository.kt → app/src/main/java/chat/rocket/android/infrastructure/SharedPreferencesLocalRepository.kt

@@ -2,8 +2,26 @@ package chat.rocket.android.infrastructure
 
 import android.content.SharedPreferences
 import androidx.core.content.edit
+import chat.rocket.common.model.User
+import com.squareup.moshi.Moshi
+
+class SharedPreferencesLocalRepository(
+    private val preferences: SharedPreferences,
+    moshi: Moshi
+) : LocalRepository {
+
+    private val userAdapter = moshi.adapter(User::class.java)
+
+    override fun getCurrentUser(url: String): User? {
+        return get("${url}_${LocalRepository.USER_KEY}", null)?.let {
+            userAdapter.fromJson(it)
+        }
+    }
+
+    override fun saveCurrentUser(url: String, user: User) {
+        save("${url}_${LocalRepository.USER_KEY}", userAdapter.toJson(user))
+    }
 
-class SharedPrefsLocalRepository(private val preferences: SharedPreferences) : LocalRepository {
     override fun getBoolean(key: String, defValue: Boolean) = preferences.getBoolean(key, defValue)
 
     override fun getFloat(key: String, defValue: Float) = preferences.getFloat(key, defValue)

app/src/main/java/chat/rocket/android/main/presentation/MainNavigator.kt

@@ -36,9 +36,10 @@ class MainNavigator(internal val activity: MainActivity) {
                    chatRoomType: String,
                    isChatRoomReadOnly: Boolean,
                    chatRoomLastSeen: Long,
-                   isChatRoomSubscribed: Boolean) {
+                   isChatRoomSubscribed: Boolean,
+                   isChatRoomOwner: Boolean) {
         activity.startActivity(activity.chatRoomIntent(chatRoomId, chatRoomName, chatRoomType,
-                isChatRoomReadOnly, chatRoomLastSeen, isChatRoomSubscribed))
+                isChatRoomReadOnly, chatRoomLastSeen, isChatRoomSubscribed, isChatRoomOwner))
         activity.overridePendingTransition(R.anim.open_enter, R.anim.open_exit)
     }
 

app/src/main/java/chat/rocket/android/server/domain/GetPermissionsInteractor.kt → app/src/main/java/chat/rocket/android/server/domain/PermissionsInteractor.kt

 package chat.rocket.android.server.domain
 
+import chat.rocket.android.helper.UserHelper
+import chat.rocket.android.infrastructure.LocalRepository
+import chat.rocket.core.model.Permission
 import javax.inject.Inject
 
-class GetPermissionsInteractor @Inject constructor(private val settingsRepository: SettingsRepository,
-                                                   private val currentServerRepository: CurrentServerRepository) {
+// Creating rooms
+const val CREATE_PUBLIC_CHANNELS = "create-c"
+const val CREATE_DIRECT_MESSAGES = "create-d"
+const val CREATE_PRIVATE_CHANNELS = "create-p"
 
-    private fun publicSettings(): PublicSettings? = settingsRepository.get(currentServerRepository.get()!!)
+// Messages
+const val DELETE_MESSAGE = "delete-message"
+const val FORCE_DELETE_MESSAGE = "force-delete-message"
+const val EDIT_MESSAGE = "edit-message"
+const val PIN_MESSAGE = "pin-message"
+const val POST_READONLY = "post-readonly"
+
+class PermissionsInteractor @Inject constructor(
+    private val settingsRepository: SettingsRepository,
+    private val permissionsRepository: PermissionsRepository,
+    private val getCurrentServerInteractor: GetCurrentServerInteractor,
+    private val userHelper: UserHelper
+) {
+
+    private fun publicSettings(): PublicSettings? = settingsRepository.get(currentServerUrl()!!)
+
+    fun saveAll(permissions: List<Permission>) {
+        val url = currentServerUrl()!!
+        permissions.forEach { permissionsRepository.save(url, it) }
+    }
 
     /**
      * Check whether user is allowed to delete a message.
@@ -31,4 +55,18 @@ class GetPermissionsInteractor @Inject constructor(private val settingsRepositor
      * Checks whether should show edited message status.
      */
     fun showEditedStatus() = publicSettings()?.showEditedStatus() ?: false
+
+    fun canPostToReadOnlyChannels(): Boolean {
+        val url = getCurrentServerInteractor.get()!!
+        val currentUserRoles = userHelper.user()?.roles
+        return permissionsRepository.get(url, POST_READONLY)?.let { permission ->
+            currentUserRoles?.isNotEmpty() == true && permission.roles.any {
+                currentUserRoles.contains(it)
+            }
+        } == true || userHelper.isAdmin()
+    }
+
+    private fun currentServerUrl(): String? {
+        return getCurrentServerInteractor.get()
+    }
 }
\ No newline at end of file

app/src/main/java/chat/rocket/android/server/domain/PermissionsRepository.kt

+package chat.rocket.android.server.domain
+
+import chat.rocket.core.model.Permission
+
+interface PermissionsRepository {
+
+    /**
+     * Store [permission] locally.
+     *
+     * @param url The server url from where we're interest to store the permission.
+     * @param permission The permission to store.
+     */
+    fun save(url: String, permission: Permission)
+
+    /**
+     * Get permission given by the [permissionId] and for the server [url].
+     *
+     * @param url The server url from where we're interested on getting the permissions.
+     * @param permissionId the id of the permission to get.
+     *
+     * @return The interested [Permission] or null if not found.
+     */
+    fun get(url: String, permissionId: String): Permission?
+}
\ No newline at end of file

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

+package chat.rocket.android.server.infraestructure
+
+import chat.rocket.android.infrastructure.LocalRepository
+import chat.rocket.android.server.domain.PermissionsRepository
+import chat.rocket.core.model.Permission
+import com.squareup.moshi.Moshi
+
+class SharedPreferencesPermissionsRepository(
+    private val localRepository: LocalRepository,
+    moshi: Moshi
+) : PermissionsRepository {
+
+    private val adapter = moshi.adapter(Permission::class.java)
+
+    override fun save(url: String, permission: Permission) {
+        localRepository.save(getPermissionKey(url, permission.id), adapter.toJson(permission))
+    }
+
+    override fun get(url: String, permissionId: String): Permission? {
+        return localRepository.get(getPermissionKey(url, permissionId))?.let {
+            adapter.fromJson(it)
+        }
+    }
+
+    // Create a key following the pattern: settings_[url]_[permission id]
+    // eg.: 'settings_https://open.rocket.chat_create-p'
+    private fun getPermissionKey(url: String, permissionId: String): String {
+        return "${LocalRepository.PERMISSIONS_KEY}${url}_$permissionId"
+    }
+}
\ No newline at end of file

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

@@ -6,7 +6,9 @@ import chat.rocket.android.server.domain.PublicSettings
 import chat.rocket.android.server.domain.SettingsRepository
 import chat.rocket.core.internal.SettingsAdapter
 
-class SharedPreferencesSettingsRepository(private val localRepository: LocalRepository) : SettingsRepository {
+class SharedPreferencesSettingsRepository(
+    private val localRepository: LocalRepository
+) : SettingsRepository {
 
     private val adapter = SettingsAdapter().lenient()