Private message support

app/src/main/java/com/vitorpamplona/amethyst/model/Account.kt

@@ -5,6 +5,8 @@ import com.vitorpamplona.amethyst.service.model.ReactionEvent
 import com.vitorpamplona.amethyst.service.model.RepostEvent
 import com.vitorpamplona.amethyst.service.relays.Client
 import nostr.postr.Persona
+import nostr.postr.Utils
+import nostr.postr.events.PrivateDmEvent
 import nostr.postr.events.TextNoteEvent
 import nostr.postr.toHex
 
@@ -78,6 +80,48 @@ class Account(val loggedIn: Persona) {
     }
   }
 
+  fun sendPrivateMeesage(message: String, toUser: String, replyingTo: Note? = null) {
+    if (!isWriteable()) return
+    val user = LocalCache.users[toUser] ?: return
+
+    val signedEvent = PrivateDmEvent.create(
+      recipientPubKey = user.pubkey,
+      publishedRecipientPubKey = user.pubkey,
+      msg = message,
+      privateKey = loggedIn.privKey!!,
+      advertiseNip18 = false
+    )
+    Client.send(signedEvent)
+    LocalCache.consume(signedEvent)
+  }
+
+  fun decryptContent(note: Note): String? {
+    val event = note.event
+    return if (event is PrivateDmEvent && loggedIn.privKey != null) {
+      var pubkeyToUse = event.pubKey
+      if (note.author == userProfile())
+        pubkeyToUse = event.recipientPubKey!!
+
+      val sharedSecret = Utils.getSharedSecret(loggedIn.privKey!!, pubkeyToUse)
+
+      return try {
+        val retVal = Utils.decrypt(event.content, sharedSecret)
+
+        if (retVal.startsWith(PrivateDmEvent.nip18Advertisement)) {
+          retVal.substring(16)
+        } else {
+          retVal
+        }
+
+      } catch (e: Exception) {
+        e.printStackTrace()
+        null
+      }
+    } else {
+      event?.content
+    }
+  }
+
   // Observers line up here.
   val live: AccountLiveData = AccountLiveData(this)
 

app/src/main/java/com/vitorpamplona/amethyst/model/LocalCache.kt

@@ -115,9 +115,9 @@ object LocalCache {
 
   fun consume(event: ContactListEvent) {
     val user = getOrCreateUser(event.pubKey)
-    //Log.d("CL", "${user.toBestDisplayName()} ${event.follows}")
 
     if (event.createdAt > user.updatedFollowsAt) {
+      //Log.d("CL", "${user.toBestDisplayName()} ${event.follows.size}")
       user.updateFollows(
         event.follows.map {
           try {
@@ -138,7 +138,25 @@ object LocalCache {
   }
 
   fun consume(event: PrivateDmEvent) {
-    //Log.d("PM", event.toJson())
+    val note = getOrCreateNote(event.id.toHex())
+
+    // Already processed this event.
+    if (note.event != null) return
+
+    val author = getOrCreateUser(event.pubKey)
+    val recipient = event.recipientPubKey?.let { getOrCreateUser(it) }
+
+    //Log.d("PM", "${author.toBestDisplayName()} to ${recipient?.toBestDisplayName()}")
+
+    val repliesTo = event.tags.filter { it.firstOrNull() == "e" }.mapNotNull { it.getOrNull(1) }.map { getOrCreateNote(it) }.toMutableList()
+    val mentions = event.tags.filter { it.firstOrNull() == "p" }.mapNotNull { it.getOrNull(1) }.map { getOrCreateUser(decodePublicKey(it)) }
+
+    note.loadEvent(event, author, mentions, repliesTo)
+
+    if (recipient != null) {
+      author.addMessage(recipient, note)
+      recipient.addMessage(author, note)
+    }
   }
 
   fun consume(event: DeletionEvent) {

app/src/main/java/com/vitorpamplona/amethyst/model/User.kt

@@ -4,6 +4,7 @@ import androidx.lifecycle.LiveData
 import com.vitorpamplona.amethyst.service.NostrSingleUserDataSource
 import com.vitorpamplona.amethyst.ui.note.toDisplayHex
 import java.util.Collections
+import java.util.concurrent.ConcurrentHashMap
 
 class User(val pubkey: ByteArray) {
     val pubkeyHex = pubkey.toHexKey()
@@ -20,6 +21,8 @@ class User(val pubkey: ByteArray) {
 
     val followers = Collections.synchronizedSet(mutableSetOf<User>())
 
+    val messages = ConcurrentHashMap<User, MutableSet<Note>>()
+
     fun toBestDisplayName(): String {
         return bestDisplayName() ?: bestUsername() ?: pubkeyDisplayHex
     }
@@ -46,6 +49,20 @@ class User(val pubkey: ByteArray) {
         user.followers.remove(this)
     }
 
+    @Synchronized
+    fun getOrCreateChannel(user: User): MutableSet<Note> {
+        return messages[user] ?: run {
+            val channel = mutableSetOf<Note>()
+            messages[user] = channel
+            channel
+        }
+    }
+
+    fun addMessage(user: User, msg: Note) {
+        getOrCreateChannel(user).add(msg)
+        live.refresh()
+    }
+
     fun updateFollows(newFollows: List<User>, updateAt: Long) {
         val toBeAdded = newFollows - follows
         val toBeRemoved = follows - newFollows

app/src/main/java/com/vitorpamplona/amethyst/service/NostrChatRoomDataSource.kt

@@ -0,0 +1,45 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.model.User
+import nostr.postr.JsonFilter
+import nostr.postr.events.PrivateDmEvent
+
+object NostrChatRoomDataSource: NostrDataSource("ChatroomFeed") {
+  lateinit var account: Account
+  var withUser: User? = null
+
+  fun loadMessagesBetween(accountIn: Account, userId: String) {
+    account = accountIn
+    withUser = LocalCache.users[userId]
+  }
+
+  fun createMessagesToMeFilter() = JsonFilter(
+    kinds = listOf(PrivateDmEvent.kind),
+    authors = withUser?.let { listOf(it.pubkeyHex) },
+    tags = mapOf("p" to listOf(account.userProfile().pubkeyHex))
+  )
+
+  fun createMessagesFromMeFilter() = JsonFilter(
+    kinds = listOf(PrivateDmEvent.kind),
+    authors = listOf(account.userProfile().pubkeyHex),
+    tags = withUser?.let { mapOf("p" to listOf(it.pubkeyHex)) }
+  )
+
+  val incomingChannel = requestNewChannel()
+  val outgoingChannel = requestNewChannel()
+
+  // returns the last Note of each user.
+  override fun feed(): List<Note> {
+    val messages = account.userProfile().messages[withUser]
+
+    return messages?.sortedBy { it.event!!.createdAt } ?: emptyList()
+  }
+
+  override fun updateChannelFilters() {
+    incomingChannel.filter = createMessagesToMeFilter()
+    outgoingChannel.filter = createMessagesFromMeFilter()
+  }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrChatroomListDataSource.kt

@@ -0,0 +1,38 @@
+package com.vitorpamplona.amethyst.service
+
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.Note
+import nostr.postr.JsonFilter
+import nostr.postr.events.PrivateDmEvent
+
+object NostrChatroomListDataSource: NostrDataSource("MailBoxFeed") {
+  lateinit var account: Account
+
+  fun createMessagesToMeFilter() = JsonFilter(
+    kinds = listOf(PrivateDmEvent.kind),
+    tags = mapOf("p" to listOf(account.userProfile().pubkeyHex))
+  )
+
+  fun createMessagesFromMeFilter() = JsonFilter(
+    kinds = listOf(PrivateDmEvent.kind),
+    authors = listOf(account.userProfile().pubkeyHex)
+  )
+
+  val incomingChannel = requestNewChannel()
+  val outgoingChannel = requestNewChannel()
+
+  // returns the last Note of each user.
+  override fun feed(): List<Note> {
+    val messages = account.userProfile().messages
+    val messagingWith = messages.keys().toList()
+
+    return messagingWith.mapNotNull {
+      messages[it]?.sortedBy { it.event?.createdAt }?.last { it.event != null }
+    }.sortedBy { it.event?.createdAt }.reversed()
+  }
+
+  override fun updateChannelFilters() {
+    incomingChannel.filter = createMessagesToMeFilter()
+    outgoingChannel.filter = createMessagesFromMeFilter()
+  }
+}

app/src/main/java/com/vitorpamplona/amethyst/service/NostrNotificationDataSource.kt

@@ -8,7 +8,7 @@ object NostrNotificationDataSource: NostrDataSource("GlobalFeed") {
   lateinit var account: Account
 
   fun createGlobalFilter() = JsonFilter(
-    since = System.currentTimeMillis() / 1000 - (60 * 60 * 24 * 7), // 2 days
+    since = System.currentTimeMillis() / 1000 - (60 * 60 * 24 * 7), // 7 days
     tags = mapOf("p" to listOf(account.userProfile().pubkeyHex).filterNotNull())
   )
 

app/src/main/java/com/vitorpamplona/amethyst/service/relays/Relay.kt

@@ -62,7 +62,6 @@ class Relay(
                             it.onSendResponse(this@Relay, msg[1].asString, msg[2].asBoolean, msg[3].asString)
                         }
                         else -> listeners.forEach {
-                            println("else: " + text)
                             it.onError(
                                 this@Relay,
                                 channel,

app/src/main/java/com/vitorpamplona/amethyst/ui/MainActivity.kt

@@ -8,12 +8,12 @@ import androidx.compose.material.MaterialTheme
 import androidx.compose.material.Surface
 import androidx.compose.ui.Modifier
 import androidx.lifecycle.viewmodel.compose.viewModel
-import com.google.android.exoplayer2.util.Util
 import com.vitorpamplona.amethyst.KeyStorage
 import com.vitorpamplona.amethyst.service.NostrAccountDataSource
 import com.vitorpamplona.amethyst.service.NostrGlobalDataSource
 import com.vitorpamplona.amethyst.service.NostrHomeDataSource
 import com.vitorpamplona.amethyst.service.NostrNotificationDataSource
+import com.vitorpamplona.amethyst.service.NostrChatroomListDataSource
 import com.vitorpamplona.amethyst.service.NostrSingleEventDataSource
 import com.vitorpamplona.amethyst.service.NostrSingleUserDataSource
 import com.vitorpamplona.amethyst.service.NostrThreadDataSource
@@ -51,6 +51,7 @@ class MainActivity : ComponentActivity() {
   override fun onPause() {
     NostrAccountDataSource.stop()
     NostrHomeDataSource.stop()
+    NostrChatroomListDataSource.stop()
 
     NostrGlobalDataSource.stop()
     NostrNotificationDataSource.stop()

app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewPostView.kt

@@ -107,7 +107,8 @@ fun NewPostView(onClose: () -> Unit, replyingTo: Note? = null, account: Account)
                         onPost = {
                             postViewModel.sendPost()
                             onClose()
-                        }
+                        },
+                        postViewModel.message.isNotBlank()
                     )
                 }
 
@@ -207,15 +208,17 @@ fun CloseButton(onCancel: () -> Unit) {
 }
 
 @Composable
-fun PostButton(onPost: () -> Unit = {}) {
+fun PostButton(onPost: () -> Unit = {}, isActive: Boolean) {
     Button(
         onClick = {
-            onPost()
+            if (isActive) {
+                onPost()
+            }
         },
         shape = RoundedCornerShape(20.dp),
         colors = ButtonDefaults
             .buttonColors(
-                backgroundColor = MaterialTheme.colors.primary
+                backgroundColor = if (isActive) MaterialTheme.colors.primary else Color.Gray
             )
     ) {
         Text(text = "Post", color = Color.White)

app/src/main/java/com/vitorpamplona/amethyst/ui/navigation/Routes.kt

@@ -10,8 +10,9 @@ import androidx.navigation.NavType
 import androidx.navigation.compose.currentBackStackEntryAsState
 import androidx.navigation.navArgument
 import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.ui.screen.ChatroomScreen
 import com.vitorpamplona.amethyst.ui.screen.HomeScreen
-import com.vitorpamplona.amethyst.ui.screen.MessageScreen
+import com.vitorpamplona.amethyst.ui.screen.ChatroomListScreen
 import com.vitorpamplona.amethyst.ui.screen.ThreadScreen
 import com.vitorpamplona.amethyst.ui.screen.NotificationScreen
 import com.vitorpamplona.amethyst.ui.screen.ProfileScreen
@@ -28,7 +29,7 @@ sealed class Route(
     object Home : Route("Home", R.drawable.ic_home, buildScreen = { acc, nav -> { _ -> HomeScreen(acc, nav) } })
     object Search : Route("Search", R.drawable.ic_search, buildScreen = { acc, nav -> { _ -> SearchScreen(acc, nav) }})
     object Notification : Route("Notification", R.drawable.ic_notifications,buildScreen = { acc, nav -> { _ -> NotificationScreen(acc, nav) }})
-    object Message : Route("Message", R.drawable.ic_dm, buildScreen = { acc, nav -> { _ -> MessageScreen(acc) }})
+    object Message : Route("Message", R.drawable.ic_dm, buildScreen = { acc, nav -> { _ -> ChatroomListScreen(acc, nav) }})
     object Profile : Route("Profile", R.drawable.ic_profile, buildScreen = { acc, nav -> { _ -> ProfileScreen(acc) }})
     object Lists : Route("Lists", R.drawable.ic_lists, buildScreen = { acc, nav -> { _ -> ProfileScreen(acc) }})
     object Topics : Route("Topics", R.drawable.ic_topics, buildScreen = { acc, nav -> { _ -> ProfileScreen(acc) }})
@@ -39,6 +40,11 @@ sealed class Route(
         arguments = listOf(navArgument("id") { type = NavType.StringType } ),
         buildScreen = { acc, nav -> { ThreadScreen(it.arguments?.getString("id"), acc, nav) }}
     )
+
+    object Room : Route("Room/{id}", R.drawable.ic_moments,
+        arguments = listOf(navArgument("id") { type = NavType.StringType } ),
+        buildScreen = { acc, nav -> { ChatroomScreen(it.arguments?.getString("id"), acc, nav) }}
+    )
 }
 
 val Routes = listOf(
@@ -56,7 +62,8 @@ val Routes = listOf(
     Route.Moments,
 
     //inner
-    Route.Note
+    Route.Note,
+    Route.Room
 )
 
 @Composable

app/src/main/java/com/vitorpamplona/amethyst/ui/note/ChatroomCompose.kt

@@ -0,0 +1,98 @@
+package com.vitorpamplona.amethyst.ui.note
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material.Divider
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.livedata.observeAsState
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.unit.dp
+import androidx.navigation.NavController
+import coil.compose.AsyncImage
+import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.ui.components.RichTextViewer
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+
+@Composable
+fun ChatroomCompose(baseNote: Note, accountViewModel: AccountViewModel, navController: NavController) {
+    val noteState by baseNote.live.observeAsState()
+    val note = noteState?.note
+
+    val accountUserState by accountViewModel.userLiveData.observeAsState()
+    val accountUser = accountUserState?.user
+
+    if (note?.event == null) {
+        BlankNote(Modifier)
+    } else {
+        val authorState by note.author!!.live.observeAsState()
+        val author = authorState?.user
+
+        val replyAuthorBase = note.mentions?.first()
+
+        var userToComposeOn = author
+
+        if ( replyAuthorBase != null ) {
+            val replyAuthorState by replyAuthorBase.live.observeAsState()
+            val replyAuthor = replyAuthorState?.user
+
+            if (author == accountUser) {
+                userToComposeOn = replyAuthor
+            }
+        }
+
+        Column(modifier =
+            Modifier.clickable(
+                onClick = { navController.navigate("Room/${userToComposeOn?.pubkeyHex}") }
+            )
+        ) {
+            Row(
+                modifier = Modifier
+                    .padding(
+                        start = 12.dp,
+                        end = 12.dp,
+                        top = 10.dp)
+            ) {
+
+                AsyncImage(
+                    model = userToComposeOn?.profilePicture(),
+                    contentDescription = "Profile Image",
+                    modifier = Modifier
+                        .width(55.dp)
+                        .clip(shape = CircleShape)
+                )
+
+                Column(modifier = Modifier.padding(start = 10.dp)) {
+                    Row(verticalAlignment = Alignment.CenterVertically) {
+                        if (userToComposeOn != null)
+                            UserDisplay(userToComposeOn)
+
+                        Text(
+                            timeAgo(note.event?.createdAt),
+                            color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
+                        )
+                    }
+
+                    val eventContent = accountViewModel.decrypt(note)
+                    if (eventContent != null)
+                        RichTextViewer(eventContent.take(100), note.event?.tags, note, accountViewModel, navController)
+                    else
+                        RichTextViewer("Referenced event not found", note.event?.tags, note, accountViewModel, navController)
+                }
+            }
+
+            Divider(
+                modifier = Modifier.padding(top = 10.dp),
+                thickness = 0.25.dp
+            )
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/note/ChatroomMessageCompose.kt

@@ -0,0 +1,122 @@
+package com.vitorpamplona.amethyst.ui.note
+
+import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Surface
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.livedata.observeAsState
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.Shape
+import androidx.compose.ui.unit.dp
+import androidx.navigation.NavController
+import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.ui.components.RichTextViewer
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+
+val ChatBubbleShapeMe = RoundedCornerShape(20.dp, 20.dp, 3.dp, 20.dp)
+val ChatBubbleShapeThem = RoundedCornerShape(20.dp, 20.dp, 20.dp, 3.dp)
+
+@Composable
+fun ChatroomMessageCompose(baseNote: Note, accountViewModel: AccountViewModel, navController: NavController) {
+    val noteState by baseNote.live.observeAsState()
+    val note = noteState?.note
+
+    val accountUserState by accountViewModel.userLiveData.observeAsState()
+    val accountUser = accountUserState?.user
+
+    if (note?.event == null) {
+        BlankNote(Modifier)
+    } else {
+        val authorState by note.author!!.live.observeAsState()
+        val author = authorState?.user
+
+        Column(modifier =
+            Modifier.clickable(
+                onClick = { navController.navigate("User/${note.idHex}") }
+            )
+        ) {
+            var backgroundBubbleColor: Color
+            var alignment: Arrangement.Horizontal
+            var shape: Shape
+
+            if (author == accountUser) {
+                backgroundBubbleColor = MaterialTheme.colors.primary.copy(alpha = 0.32f)
+                alignment = Arrangement.End
+                shape = ChatBubbleShapeMe
+            } else {
+                backgroundBubbleColor = MaterialTheme.colors.onSurface.copy(alpha = 0.12f)
+                alignment = Arrangement.Start
+                shape = ChatBubbleShapeThem
+            }
+
+            Row(
+                horizontalArrangement = alignment,
+                modifier = Modifier.fillMaxWidth()
+                    .padding(
+                        start = 12.dp,
+                        end = 12.dp,
+                        top = 10.dp)
+            ) {
+
+                Row(
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Surface(
+                        color = backgroundBubbleColor,
+                        shape = shape
+                    ) {
+                        Column(
+                            modifier = Modifier.padding(10.dp),
+                        ) {
+                            Row(
+                                verticalAlignment = Alignment.CenterVertically
+                            ) {
+                                val eventContent = accountViewModel.decrypt(note)
+                                if (eventContent != null)
+                                    RichTextViewer(
+                                        eventContent,
+                                        note.event?.tags,
+                                        note,
+                                        accountViewModel,
+                                        navController
+                                    )
+                                else
+                                    RichTextViewer(
+                                        "Could Not decrypt the message",
+                                        note.event?.tags,
+                                        note,
+                                        accountViewModel,
+                                        navController
+                                    )
+
+                            }
+
+                            Row(
+                                verticalAlignment = Alignment.CenterVertically,
+                                horizontalArrangement = alignment
+                            ) {
+                                Text(
+                                    timeAgoLong(note.event?.createdAt),
+                                    color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
+                                )
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+

app/src/main/java/com/vitorpamplona/amethyst/ui/note/NoteCompose.kt

@@ -1,10 +1,8 @@
 package com.vitorpamplona.amethyst.ui.note
 
-import android.text.format.DateUtils.getRelativeTimeSpanString
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.background
 import androidx.compose.foundation.border
-import androidx.compose.foundation.clickable
 import androidx.compose.foundation.combinedClickable
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -29,10 +27,8 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.platform.LocalClipboardManager
 import androidx.compose.ui.text.AnnotatedString
 import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.unit.DpOffset
 import androidx.compose.ui.unit.dp
 import androidx.navigation.NavController
-import androidx.navigation.compose.rememberNavController
 import coil.compose.AsyncImage
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.toNote

app/src/main/java/com/vitorpamplona/amethyst/ui/note/TimeAgoFormatter.kt

@@ -18,6 +18,7 @@ fun timeAgo(mills: Long?): String {
   return " • " + humanReadable
     .replace(" hr. ago", "h")
     .replace(" min. ago", "m")
+    .replace(" days. ago", "d")
 }
 
 fun timeAgoLong(mills: Long?): String {

app/src/main/java/com/vitorpamplona/amethyst/ui/note/UserDisplay.kt

@@ -9,14 +9,21 @@ import com.vitorpamplona.amethyst.model.User
 @Composable
 fun UserDisplay(user: User) {
     if (user.bestUsername() != null || user.bestDisplayName() != null) {
-      Text(
-        user.bestDisplayName() ?: "",
-        fontWeight = FontWeight.Bold,
-      )
-      Text(
-        "@${(user.bestUsername() ?: "")}",
-        color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f),
-      )
+      if (user.bestDisplayName().isNullOrBlank()) {
+        Text(
+          "@${(user.bestUsername() ?: "")}",
+          fontWeight = FontWeight.Bold,
+        )
+      } else {
+        Text(
+          user.bestDisplayName() ?: "",
+          fontWeight = FontWeight.Bold,
+        )
+        Text(
+          "@${(user.bestUsername() ?: "")}",
+          color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f),
+        )
+      }
     } else {
       Text(
         user.pubkeyDisplayHex,

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/AccountStateViewModel.kt

@@ -8,6 +8,7 @@ import com.vitorpamplona.amethyst.service.NostrAccountDataSource
 import com.vitorpamplona.amethyst.service.NostrGlobalDataSource
 import com.vitorpamplona.amethyst.service.NostrHomeDataSource
 import com.vitorpamplona.amethyst.service.NostrNotificationDataSource
+import com.vitorpamplona.amethyst.service.NostrChatroomListDataSource
 import com.vitorpamplona.amethyst.service.NostrSingleEventDataSource
 import com.vitorpamplona.amethyst.service.NostrSingleUserDataSource
 import com.vitorpamplona.amethyst.service.NostrThreadDataSource
@@ -59,6 +60,7 @@ class AccountStateViewModel(private val encryptedPreferences: EncryptedSharedPre
     NostrAccountDataSource.account = loggedIn
     NostrHomeDataSource.account = loggedIn
     NostrNotificationDataSource.account = loggedIn
+    NostrChatroomListDataSource.account = loggedIn
 
     NostrAccountDataSource.start()
     NostrGlobalDataSource.start()
@@ -67,6 +69,7 @@ class AccountStateViewModel(private val encryptedPreferences: EncryptedSharedPre
     NostrSingleEventDataSource.start()
     NostrSingleUserDataSource.start()
     NostrThreadDataSource.start()
+    NostrChatroomListDataSource.start()
   }
 
   fun newKey() {

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/ChatroomFeedView.kt

@@ -0,0 +1,98 @@
+package com.vitorpamplona.amethyst.ui.screen
+
+import androidx.compose.animation.Crossfade
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.itemsIndexed
+import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.material.Divider
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Surface
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.compose.ExperimentalLifecycleComposeApi
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import androidx.navigation.NavController
+import com.google.accompanist.swiperefresh.SwipeRefresh
+import com.google.accompanist.swiperefresh.rememberSwipeRefreshState
+import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.ui.components.RichTextViewer
+import com.vitorpamplona.amethyst.ui.note.ChatroomMessageCompose
+import com.vitorpamplona.amethyst.ui.note.timeAgoLong
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+
+@OptIn(ExperimentalLifecycleComposeApi::class)
+@Composable
+fun ChatroomFeedView(userId: String, viewModel: FeedViewModel, accountViewModel: AccountViewModel, navController: NavController) {
+    val feedState by viewModel.feedContent.collectAsStateWithLifecycle()
+
+    var isRefreshing by remember { mutableStateOf(false) }
+    val swipeRefreshState = rememberSwipeRefreshState(isRefreshing)
+
+    val listState = rememberLazyListState()
+
+    LaunchedEffect(isRefreshing) {
+        if (isRefreshing) {
+            viewModel.refresh()
+            isRefreshing = false
+        }
+    }
+
+    SwipeRefresh(
+        state = swipeRefreshState,
+        onRefresh = {
+            isRefreshing = true
+        },
+    ) {
+        Column() {
+            Crossfade(targetState = feedState) { state ->
+                when (state) {
+                    is FeedState.Empty -> {
+                        FeedEmpty {
+                            isRefreshing = true
+                        }
+                    }
+                    is FeedState.FeedError -> {
+                        FeedError(state.errorMessage) {
+                            isRefreshing = true
+                        }
+                    }
+                    is FeedState.Loaded -> {
+                        LazyColumn(
+                            contentPadding = PaddingValues(
+                                top = 10.dp,
+                                bottom = 10.dp
+                            ),
+                            state = listState
+                        ) {
+                            var previousDate: String = ""
+                            itemsIndexed(state.feed, key = { _, item -> item.idHex }) { index, item ->
+                                ChatroomMessageCompose(item, accountViewModel = accountViewModel, navController = navController)
+                            }
+                        }
+
+                        LaunchedEffect(Unit) {
+                            listState.animateScrollToItem(state.feed.size-1, 0)
+                        }
+                    }
+                    FeedState.Loading -> {
+                        LoadingFeed()
+                    }
+                }
+            }
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/ChatroomListFeedView.kt

@@ -0,0 +1,80 @@
+package com.vitorpamplona.amethyst.ui.screen
+
+import androidx.compose.animation.Crossfade
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.itemsIndexed
+import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.compose.ExperimentalLifecycleComposeApi
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import androidx.navigation.NavController
+import com.google.accompanist.swiperefresh.SwipeRefresh
+import com.google.accompanist.swiperefresh.rememberSwipeRefreshState
+import com.vitorpamplona.amethyst.ui.note.ChatroomCompose
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+
+@OptIn(ExperimentalLifecycleComposeApi::class)
+@Composable
+fun ChatroomListFeedView(viewModel: FeedViewModel, accountViewModel: AccountViewModel, navController: NavController) {
+    val feedState by viewModel.feedContent.collectAsStateWithLifecycle()
+
+    var isRefreshing by remember { mutableStateOf(false) }
+    val swipeRefreshState = rememberSwipeRefreshState(isRefreshing)
+
+    val listState = rememberLazyListState()
+
+    LaunchedEffect(isRefreshing) {
+        if (isRefreshing) {
+            viewModel.refresh()
+            isRefreshing = false
+        }
+    }
+
+    SwipeRefresh(
+        state = swipeRefreshState,
+        onRefresh = {
+            isRefreshing = true
+        },
+    ) {
+        Column() {
+            Crossfade(targetState = feedState) { state ->
+                when (state) {
+                    is FeedState.Empty -> {
+                        FeedEmpty {
+                            isRefreshing = true
+                        }
+                    }
+                    is FeedState.FeedError -> {
+                        FeedError(state.errorMessage) {
+                            isRefreshing = true
+                        }
+                    }
+                    is FeedState.Loaded -> {
+                        LazyColumn(
+                            contentPadding = PaddingValues(
+                                top = 10.dp,
+                                bottom = 10.dp
+                            ),
+                            state = listState
+                        ) {
+                            itemsIndexed(state.feed, key = { _, item -> item.idHex }) { index, item ->
+                                ChatroomCompose(item, accountViewModel = accountViewModel, navController = navController)
+                            }
+                        }
+                    }
+                    FeedState.Loading -> {
+                        LoadingFeed()
+                    }
+                }
+            }
+        }
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/FeedView.kt

@@ -133,57 +133,4 @@ fun FeedEmpty(onRefresh: () -> Unit) {
             Text(text = "Refresh")
         }
     }
-}
-
-
-// Bosted code to be deleted:
-
-/*
-
-                                Boosted By: removed because it was ugly
-
-                                if (item.event is RepostEvent) {
-                                    Row(
-                                        modifier = Modifier.padding(
-                                            start = 12.dp,
-                                            end = 12.dp,
-                                            bottom = 8.dp
-                                        ),
-                                        verticalAlignment = Alignment.CenterVertically
-                                    ) {
-                                        Icon(
-                                            painter = painterResource(R.drawable.ic_retweet),
-                                            null,
-                                            modifier = Modifier.size(20.dp),
-                                            tint = Color.Gray
-                                        )
-                                        Text(
-                                            text = "Boosted by ${item.author.toBestDisplayName()}",
-                                            modifier = Modifier.padding(start = 10.dp),
-                                            fontWeight = FontWeight.Bold,
-                                            color = Color.Gray,
-                                        )
-                                    }
-                                    val refNote = item.replyTo.firstOrNull()
-                                    if (refNote != null) {
-                                        NoteCompose(index, refNote)
-                                    } else {
-                                        Row(
-                                            modifier = Modifier.padding(
-                                                start = 40.dp,
-                                                end = 40.dp,
-                                                bottom = 25.dp,
-                                                top = 15.dp
-                                            ),
-                                            verticalAlignment = Alignment.CenterVertically
-                                        ) {
-                                            Text(
-                                                text = "Could not find referenced event",
-                                                modifier = Modifier.padding(30.dp),
-                                                color = Color.Gray,
-                                            )
-                                        }
-                                    }
-                                } else {
-                                    NoteCompose(index, item)
-                                }*/
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/AccountViewModel.kt

@@ -8,6 +8,7 @@ import com.vitorpamplona.amethyst.model.AccountState
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.UserState
 import com.vitorpamplona.amethyst.service.relays.Client
+import nostr.postr.events.PrivateDmEvent
 
 class AccountViewModel(private val account: Account): ViewModel() {
   val accountLiveData: LiveData<AccountState> = Transformations.map(account.live) { it }
@@ -24,4 +25,8 @@ class AccountViewModel(private val account: Account): ViewModel() {
   fun broadcast(note: Note) {
     account.broadcast(note)
   }
+
+  fun decrypt(note: Note): String? {
+    return account.decryptContent(note)
+  }
 }

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/ChatroomListScreen.kt

@@ -0,0 +1,47 @@
+package com.vitorpamplona.amethyst.ui.screen
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material.Divider
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.livedata.observeAsState
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import androidx.navigation.NavController
+import coil.compose.AsyncImage
+import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.service.NostrChatroomListDataSource
+import com.vitorpamplona.amethyst.ui.components.RichTextViewer
+import com.vitorpamplona.amethyst.ui.note.BlankNote
+import com.vitorpamplona.amethyst.ui.note.UserDisplay
+import com.vitorpamplona.amethyst.ui.note.timeAgo
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+
+@Composable
+fun ChatroomListScreen(accountViewModel: AccountViewModel, navController: NavController) {
+    val account by accountViewModel.accountLiveData.observeAsState()
+
+    if (account != null) {
+        val feedViewModel: FeedViewModel = viewModel { FeedViewModel( NostrChatroomListDataSource ) }
+
+        Column(Modifier.fillMaxHeight()) {
+            Column(
+                modifier = Modifier.padding(vertical = 0.dp)
+            ) {
+                ChatroomListFeedView(feedViewModel, accountViewModel, navController)
+            }
+        }
+    }
+}
+

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/ChatroomScreen.kt

@@ -0,0 +1,145 @@
+package com.vitorpamplona.amethyst.ui.screen
+
+import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material.Divider
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.OutlinedTextField
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.livedata.observeAsState
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.focus.focusRequester
+import androidx.compose.ui.focus.onFocusChanged
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.input.KeyboardCapitalization
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.input.TextFieldValue
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import androidx.navigation.NavController
+import coil.compose.AsyncImage
+import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.model.User
+import com.vitorpamplona.amethyst.service.NostrChatRoomDataSource
+import com.vitorpamplona.amethyst.service.NostrThreadDataSource
+import com.vitorpamplona.amethyst.ui.actions.NewPostViewModel
+import com.vitorpamplona.amethyst.ui.actions.PostButton
+import com.vitorpamplona.amethyst.ui.components.RichTextViewer
+import com.vitorpamplona.amethyst.ui.note.BlankNote
+import com.vitorpamplona.amethyst.ui.note.ChatroomCompose
+import com.vitorpamplona.amethyst.ui.note.UserDisplay
+import com.vitorpamplona.amethyst.ui.note.timeAgo
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+
+@Composable
+fun ChatroomScreen(userId: String?, accountViewModel: AccountViewModel, navController: NavController) {
+    val accountState by accountViewModel.accountLiveData.observeAsState()
+    val account = accountState?.account
+
+    if (account != null && userId != null) {
+        val newPost = remember { mutableStateOf(TextFieldValue("")) }
+
+        NostrChatRoomDataSource.loadMessagesBetween(account, userId)
+
+        val feedViewModel: FeedViewModel = viewModel { FeedViewModel( NostrChatRoomDataSource ) }
+
+        Column(Modifier.fillMaxHeight()) {
+            NostrChatRoomDataSource.withUser?.let {
+                ChatroomHeader(
+                    it,
+                    accountViewModel = accountViewModel,
+                    navController = navController
+                )
+            }
+
+            Column(
+                modifier = Modifier.fillMaxHeight().padding(vertical = 0.dp).weight(1f, true)
+            ) {
+                ChatroomFeedView(userId, feedViewModel, accountViewModel, navController)
+            }
+
+            //LAST ROW
+            Row(modifier = Modifier.padding(10.dp).fillMaxWidth(),
+                horizontalArrangement = Arrangement.SpaceBetween,
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                OutlinedTextField(
+                    value = newPost.value,
+                    onValueChange = { newPost.value = it },
+                    keyboardOptions = KeyboardOptions.Default.copy(
+                        capitalization = KeyboardCapitalization.Sentences
+                    ),
+                    modifier = Modifier.weight(1f, true).padding(end = 10.dp),
+                    placeholder = {
+                        Text(
+                            text = "reply here.. ",
+                            color = MaterialTheme.colors.onSurface.copy(alpha = 0.32f)
+                        )
+                    }
+                )
+
+                PostButton(
+                    onPost = {
+                        account.sendPrivateMeesage(newPost.value.text, userId)
+                        newPost.value = TextFieldValue("")
+                    },
+                    newPost.value.text.isNotBlank()
+                )
+            }
+        }
+    }
+}
+
+
+@Composable
+fun ChatroomHeader(baseUser: User, accountViewModel: AccountViewModel, navController: NavController) {
+    val authorState by baseUser.live.observeAsState()
+    val author = authorState?.user
+
+    Column(modifier =
+        Modifier
+            .padding(12.dp)
+            //.clickable(
+                //onClick = { navController.navigate("User/${author?.pubkeyHex}") }
+            //)
+    ) {
+        Row(verticalAlignment = Alignment.CenterVertically) {
+
+            AsyncImage(
+                model = author?.profilePicture(),
+                contentDescription = "Profile Image",
+                modifier = Modifier
+                    .width(35.dp)
+                    .clip(shape = CircleShape)
+            )
+
+            Column(modifier = Modifier.padding(start = 10.dp)) {
+                Row(verticalAlignment = Alignment.CenterVertically) {
+                    if (author != null)
+                        UserDisplay(author)
+                }
+            }
+        }
+
+        Divider(
+            modifier = Modifier.padding(top = 12.dp, start = 12.dp, end = 12.dp),
+            thickness = 0.25.dp
+        )
+    }
+}

app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/MessageScreen.kt

@@ -1,29 +0,0 @@
-package com.vitorpamplona.amethyst.ui.screen
-
-import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.fillMaxHeight
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.material.Text
-import androidx.compose.material.rememberScaffoldState
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.rememberCoroutineScope
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
-
-@Composable
-fun MessageScreen(accountViewModel: AccountViewModel) {
-    val state = rememberScaffoldState()
-    val scope = rememberCoroutineScope()
-
-    Column(
-        Modifier
-            .fillMaxHeight()
-            .fillMaxWidth(),
-        horizontalAlignment = Alignment.CenterHorizontally,
-        verticalArrangement = Arrangement.Center,
-    ) {
-        Text("Message Screen")
-    }
-}