Add support for sending invites

app/src/main/java/eu/steffo/twom/activities/ConfigureRoomActivity.kt

@@ -7,7 +7,7 @@ import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.result.contract.ActivityResultContract
-import eu.steffo.twom.composables.configureroom.CreateRoomScaffold
+import eu.steffo.twom.composables.configureroom.ConfigureRoomScaffold
 
 
 class ConfigureRoomActivity : ComponentActivity() {
@@ -51,6 +51,6 @@ class ConfigureRoomActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
-        setContent { CreateRoomScaffold() }
+        setContent { ConfigureRoomScaffold() }
     }
 }

app/src/main/java/eu/steffo/twom/activities/InviteUserActivity.kt

@@ -1,35 +0,0 @@
-package eu.steffo.twom.activities
-
-import android.content.Context
-import android.content.Intent
-import android.os.Bundle
-import androidx.activity.ComponentActivity
-import androidx.activity.compose.setContent
-import androidx.activity.result.contract.ActivityResultContract
-import androidx.compose.material3.Text
-
-
-class InviteUserActivity : ComponentActivity() {
-    companion object {
-        const val USER_EXTRA = "user"
-    }
-
-    class Contract : ActivityResultContract<Unit, String?>() {
-        override fun createIntent(context: Context, input: Unit): Intent {
-            return Intent(context, ConfigureRoomActivity::class.java)
-        }
-
-        override fun parseResult(resultCode: Int, intent: Intent?): String? {
-            return when (resultCode) {
-                RESULT_OK -> intent!!.getStringExtra(USER_EXTRA)
-                else -> null
-            }
-        }
-    }
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-
-        setContent { Text("Garasauto Prime") }
-    }
-}

app/src/main/java/eu/steffo/twom/composables/avatar/AvatarEmpty.kt

@@ -17,16 +17,17 @@ import androidx.compose.ui.tooling.preview.Preview
 fun AvatarEmpty(
     modifier: Modifier = Modifier,
     text: String? = null,
+    alpha: Float = 1.0f,
 ) {
     Box(
         modifier = modifier
             .fillMaxSize()
-            .background(MaterialTheme.colorScheme.tertiary),
+            .background(MaterialTheme.colorScheme.tertiary.copy(alpha = alpha)),
     ) {
         Text(
             modifier = Modifier
                 .align(Alignment.Center),
-            color = MaterialTheme.colorScheme.onTertiary,
+            color = MaterialTheme.colorScheme.onTertiary.copy(alpha = alpha),
             text = text ?: "?",
         )
     }

app/src/main/java/eu/steffo/twom/composables/avatar/AvatarImage.kt

@@ -17,6 +17,7 @@ fun AvatarImage(
     bitmap: ImageBitmap? = null,
     fallbackText: String? = null,
     contentDescription: String = "",
+    alpha: Float = 1.0f,
 ) {
     if (bitmap == null) {
         AvatarEmpty(
@@ -25,6 +26,7 @@ fun AvatarImage(
                     this.contentDescription = contentDescription
                 },
             text = fallbackText,
+            alpha = alpha,
         )
     } else {
         Image(
@@ -33,6 +35,7 @@ fun AvatarImage(
             contentDescription = contentDescription,
             contentScale = ContentScale.Crop,
             alignment = Alignment.Center,
+            alpha = alpha,
         )
     }
 }

app/src/main/java/eu/steffo/twom/composables/avatar/AvatarPicker.kt

@@ -23,6 +23,7 @@ fun AvatarPicker(
     modifier: Modifier = Modifier,
     fallbackText: String = "?",
     onPick: (bitmap: Bitmap) -> Unit = {},
+    alpha: Float = 1.0f,
 ) {
     val context = LocalContext.current
     val resolver = context.contentResolver
@@ -51,6 +52,7 @@ fun AvatarPicker(
         AvatarImage(
             bitmap = selection?.asImageBitmap(),
             fallbackText = fallbackText,
+            alpha = alpha,
         )
     }
 }

app/src/main/java/eu/steffo/twom/composables/avatar/AvatarURL.kt

@@ -22,6 +22,7 @@ fun AvatarURL(
     url: String? = "",
     fallbackText: String? = null,
     contentDescription: String = "",
+    alpha: Float = 1.0f,
 ) {
     val session = LocalSession.current
     var bitmap by remember { mutableStateOf<Bitmap?>(null) }
@@ -67,5 +68,6 @@ fun AvatarURL(
         bitmap = bitmap?.asImageBitmap(),
         fallbackText = fallbackText,
         contentDescription = contentDescription,
+        alpha = alpha,
     )
 }

app/src/main/java/eu/steffo/twom/composables/avatar/AvatarUser.kt

@@ -13,11 +13,13 @@ fun AvatarUser(
     user: User? = null,
     fallbackText: String? = null,
     contentDescription: String = "",
+    alpha: Float = 1.0f,
 ) {
     AvatarURL(
         modifier = modifier,
         url = user?.avatarUrl,
         fallbackText = user?.toMatrixItem()?.firstLetterOfDisplayName(),
         contentDescription = contentDescription,
+        alpha = alpha,
     )
 }

app/src/main/java/eu/steffo/twom/composables/avatar/AvatarUserId.kt

@@ -18,6 +18,7 @@ fun AvatarUserId(
     userId: String = "",
     fallbackText: String = "?",
     contentDescription: String = "",
+    alpha: Float = 1.0f,
 ) {
     val session = LocalSession.current
     var avatarUrl by rememberSaveable { mutableStateOf<String?>(null) }
@@ -43,5 +44,6 @@ fun AvatarUserId(
         url = avatarUrl,
         fallbackText = fallbackText,
         contentDescription = contentDescription,
+        alpha = alpha,
     )
 }

app/src/main/java/eu/steffo/twom/composables/configureroom/ConfigureRoomForm.kt

@@ -32,7 +32,7 @@ import eu.steffo.twom.utils.BitmapUtilities
 @Preview(showBackground = true)
 fun ConfigureRoomForm(
     modifier: Modifier = Modifier,
-    onSubmit: (name: String, description: String, avatarUri: Uri?) -> Unit = { _, _, _ -> },
+    onSubmit: (name: String, description: String, avatarUri: String?) -> Unit = { _, _, _ -> },
 ) {
     var name by rememberSaveable { mutableStateOf("") }
     var description by rememberSaveable { mutableStateOf("") }
@@ -85,7 +85,7 @@ fun ConfigureRoomForm(
                 modifier = Modifier
                     .fillMaxWidth(),
                 onClick = {
-                    onSubmit(name, description, avatarUri)
+                    onSubmit(name, description, avatarUri.toString())
                 },
             ) {
                 Text(stringResource(R.string.create_complete_text))

app/src/main/java/eu/steffo/twom/composables/configureroom/ConfigureRoomScaffold.kt

@@ -2,7 +2,6 @@ package eu.steffo.twom.composables.configureroom
 
 import android.app.Activity
 import android.content.Intent
-import android.net.Uri
 import androidx.activity.ComponentActivity
 import androidx.compose.foundation.layout.padding
 import androidx.compose.material3.Scaffold
@@ -15,11 +14,11 @@ import eu.steffo.twom.composables.theme.TwoMTheme
 
 @Composable
 @Preview
-fun CreateRoomScaffold() {
+fun ConfigureRoomScaffold() {
     val context = LocalContext.current
     val activity = context as Activity
 
-    fun submitActivity(name: String, description: String, avatarUri: Uri?) {
+    fun submitActivity(name: String, description: String, avatarUri: String?) {
         val resultIntent = Intent()
         resultIntent.putExtra(ConfigureRoomActivity.NAME_EXTRA, name)
         resultIntent.putExtra(ConfigureRoomActivity.DESCRIPTION_EXTRA, description)
@@ -34,12 +33,12 @@ fun CreateRoomScaffold() {
     TwoMTheme {
         Scaffold(
             topBar = {
-                CreateActivityTopBar()
+                ConfigureActivityTopBar()
             },
             content = {
                 ConfigureRoomForm(
                     modifier = Modifier.padding(it),
-                    onSubmit = { name: String, description: String, avatarUri: Uri? ->
+                    onSubmit = { name: String, description: String, avatarUri: String? ->
                         submitActivity(name, description, avatarUri)
                     }
                 )

app/src/main/java/eu/steffo/twom/composables/configureroom/ConfigureRoomTopBar.kt

@@ -13,7 +13,7 @@ import eu.steffo.twom.composables.navigation.BackIconButton
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 @Preview
-fun CreateActivityTopBar(
+fun ConfigureActivityTopBar(
     modifier: Modifier = Modifier,
 ) {
     TopAppBar(

app/src/main/java/eu/steffo/twom/composables/inviteuser/InviteUserContent.kt

@@ -1,47 +0,0 @@
-package eu.steffo.twom.composables.inviteuser
-
-import androidx.compose.foundation.layout.Row
-import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.Text
-import androidx.compose.runtime.Composable
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.res.stringResource
-import eu.steffo.twom.R
-import eu.steffo.twom.composables.theme.basePadding
-
-@Composable
-fun InviteUserContent() {
-    Row(Modifier.basePadding()) {
-        Text(
-            text = stringResource(R.string.room_invite_title),
-            style = MaterialTheme.typography.labelLarge,
-        )
-    }
-
-    Row(Modifier.basePadding()) {
-        InviteUserForm(
-            /*
-            onConfirm = {
-                scope.launch SendInvite@{
-                    isSendingInvite = true
-                    errorInvite = null
-
-                    Log.d("Room", "Sending invite to `$it`...")
-
-                    try {
-                        room.membershipService().invite(it)
-                    } catch (error: Throwable) {
-                        Log.e("Room", "Failed to send invite to `$it`: $error")
-                        errorInvite = error
-                        isSendingInvite = false
-                        return@SendInvite
-                    }
-
-                    Log.d("Room", "Successfully sent invite to `$it`!")
-                    isSendingInvite = false
-                }
-            }
-             */
-        )
-    }
-}

app/src/main/java/eu/steffo/twom/composables/inviteuser/InviteUserForm.kt

@@ -1,54 +0,0 @@
-package eu.steffo.twom.composables.inviteuser
-
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.padding
-import androidx.compose.material3.Button
-import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.OutlinedTextField
-import androidx.compose.material3.Text
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.saveable.rememberSaveable
-import androidx.compose.runtime.setValue
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.res.stringResource
-import androidx.compose.ui.tooling.preview.Preview
-import androidx.compose.ui.unit.dp
-import eu.steffo.twom.R
-
-@Composable
-@Preview
-fun InviteUserForm(
-    onConfirm: (userId: String) -> Unit = {},
-) {
-    var value by rememberSaveable { mutableStateOf("") }
-
-    OutlinedTextField(
-        modifier = Modifier
-            .fillMaxWidth(),
-        value = value,
-        onValueChange = { value = it },
-        singleLine = true,
-        shape = MaterialTheme.shapes.small,
-        placeholder = {
-            Text(
-                text = stringResource(R.string.room_invite_username_placeholder)
-            )
-        },
-    )
-
-    Button(
-        modifier = Modifier
-            .padding(top = 4.dp)
-            .fillMaxWidth(),
-        onClick = { onConfirm(value) },
-        shape = MaterialTheme.shapes.small,
-        // FIXME: Maybe I should validate usernames with a regex
-        enabled = (value.contains("@") && value.contains(":")),
-    ) {
-        Text(
-            text = stringResource(R.string.room_invite_button_label)
-        )
-    }
-}

app/src/main/java/eu/steffo/twom/composables/viewroom/InviteFAB.kt

@@ -1,9 +1,7 @@
 package eu.steffo.twom.composables.viewroom
 
-import androidx.activity.compose.rememberLauncherForActivityResult
-import androidx.activity.result.launch
 import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.Add
+import androidx.compose.material.icons.filled.Email
 import androidx.compose.material3.ExtendedFloatingActionButton
 import androidx.compose.material3.Icon
 import androidx.compose.material3.Text
@@ -12,27 +10,20 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.tooling.preview.Preview
 import eu.steffo.twom.R
-import eu.steffo.twom.activities.InviteUserActivity
 
 @Composable
 @Preview
 fun InviteFAB(
     modifier: Modifier = Modifier,
+    onClick: () -> Unit = {},
     onUserSelected: (userId: String) -> Unit = {},
 ) {
-    val launcher =
-        rememberLauncherForActivityResult(InviteUserActivity.Contract()) {
-            if (it != null) {
-                onUserSelected(it)
-            }
-        }
-
     ExtendedFloatingActionButton(
         modifier = modifier,
-        onClick = { launcher.launch() },
+        onClick = { onClick() },
         icon = {
             Icon(
-                Icons.Filled.Add,
+                Icons.Filled.Email,
                 contentDescription = null
             )
         },

app/src/main/java/eu/steffo/twom/composables/viewroom/InviteSheet.kt

@@ -0,0 +1,72 @@
+package eu.steffo.twom.composables.viewroom
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.ModalBottomSheet
+import androidx.compose.material3.SheetState
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import eu.steffo.twom.R
+import eu.steffo.twom.composables.theme.basePadding
+import kotlinx.coroutines.launch
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun InviteSheet(
+    sheetState: SheetState,
+    modifier: Modifier = Modifier,
+    onDismissed: () -> Unit = {},
+    onCompleted: () -> Unit = {},
+) {
+    val scope = rememberCoroutineScope()
+
+    ModalBottomSheet(
+        modifier = modifier,
+        sheetState = sheetState,
+        onDismissRequest = {
+            // Not super sure what this is for
+            // https://developer.android.com/jetpack/compose/components/bottom-sheets
+            scope.launch {
+                sheetState.hide()
+            }.invokeOnCompletion {
+                if (!sheetState.isVisible) {
+                    onDismissed()
+                }
+            }
+        },
+    ) {
+        // Hack required as it seems that ModalBottomSheet does not take in account screen insets yet
+        Column(Modifier.padding(bottom = 80.dp)) {
+
+            Text(
+                modifier = Modifier
+                    .basePadding()
+                    .fillMaxWidth(),
+                text = stringResource(R.string.room_invite_title),
+                style = MaterialTheme.typography.headlineSmall,
+                textAlign = TextAlign.Center,
+            )
+
+            InviteUserForm(
+                onDone = {
+                    scope.launch {
+                        sheetState.hide()
+                    }.invokeOnCompletion {
+                        if (!sheetState.isVisible) {
+                            onCompleted()
+                        }
+                    }
+                }
+            )
+
+        }
+    }
+}

app/src/main/java/eu/steffo/twom/composables/viewroom/InviteUserForm.kt

@@ -0,0 +1,114 @@
+package eu.steffo.twom.composables.viewroom
+
+import android.util.Log
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.material3.Button
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextField
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import eu.steffo.twom.R
+import eu.steffo.twom.composables.errorhandling.ErrorText
+import eu.steffo.twom.composables.errorhandling.LoadingText
+import eu.steffo.twom.composables.errorhandling.LocalizableError
+import eu.steffo.twom.composables.theme.basePadding
+import kotlinx.coroutines.launch
+import kotlin.jvm.optionals.getOrNull
+
+@Composable
+fun InviteUserForm(
+    onDone: () -> Unit = {},
+) {
+    val scope = rememberCoroutineScope()
+
+    var userId by rememberSaveable { mutableStateOf("") }
+
+    val roomRequest = LocalRoom.current
+    if (roomRequest == null) {
+        LoadingText(
+            modifier = Modifier.basePadding(),
+        )
+        return
+    }
+
+    val room = roomRequest.getOrNull()
+    if (room == null) {
+        ErrorText(
+            modifier = Modifier.basePadding(),
+            text = stringResource(R.string.room_error_room_notfound)
+        )
+        return
+    }
+
+    TextField(
+        modifier = Modifier
+            .basePadding()
+            .fillMaxWidth(),
+        value = userId,
+        onValueChange = { userId = it },
+        singleLine = true,
+        label = {
+            Text(
+                text = stringResource(R.string.room_invite_username_label)
+            )
+        },
+        placeholder = {
+            Text(
+                text = stringResource(R.string.room_invite_username_placeholder)
+            )
+        },
+    )
+
+    var busy by rememberSaveable { mutableStateOf(false) }
+    val error by remember { mutableStateOf(LocalizableError()) }
+
+    Button(
+        modifier = Modifier
+            .basePadding()
+            .fillMaxWidth(),
+        // FIXME: Maybe I should validate usernames with a regex
+        enabled = (!busy && userId.contains("@") && userId.contains(":")),
+        onClick = {
+            scope.launch SendInvite@{
+                busy = true
+                error.clear()
+
+                Log.d("Room", "Sending invite to `$userId`...")
+
+                try {
+                    room.membershipService().invite(userId)
+                } catch (e: Throwable) {
+                    Log.e("Room", "Failed to send invite to `$userId`: $error")
+                    error.set(R.string.room_error_invite_generic, e)
+                    busy = false
+                    return@SendInvite
+                }
+
+                Log.d("Room", "Successfully sent invite to `$userId`!")
+                onDone()
+
+                busy = false
+            }
+        },
+    ) {
+        Text(
+            text = stringResource(R.string.room_invite_button_label)
+        )
+    }
+
+    error.Show {
+        ErrorText(
+            modifier = Modifier
+                .basePadding()
+                .fillMaxWidth(),
+            text = it,
+        )
+    }
+}

app/src/main/java/eu/steffo/twom/composables/viewroom/MemberListItem.kt

@@ -27,6 +27,7 @@ import eu.steffo.twom.R
 import eu.steffo.twom.composables.avatar.AvatarUser
 import eu.steffo.twom.composables.errorhandling.ErrorText
 import eu.steffo.twom.composables.matrix.LocalSession
+import eu.steffo.twom.utils.RSVPAnswer
 import org.matrix.android.sdk.api.session.room.model.RoomMemberSummary
 import org.matrix.android.sdk.api.session.user.model.User
 import kotlin.jvm.optionals.getOrNull
@@ -72,18 +73,24 @@ fun MemberListItem(
         Log.d("UserListItem", "Resolved user: $memberId")
     }
 
-    val rsvp = observeRSVP(room = room, member = member)
+    val rsvp = observeRSVP(room = room, member = member) ?: return
 
     var expanded by rememberSaveable { mutableStateOf(false) }
 
+    val alpha = if (rsvp.answer == RSVPAnswer.PENDING) 0.4f else 1.0f
+    val color = rsvp.answer.staticColorRole.color().copy(alpha)
+
     ListItem(
-        modifier = modifier.combinedClickable(
+        modifier = modifier
+            .combinedClickable(
                 onClick = {},
                 onLongClick = { expanded = true },
             ),
         headlineContent = {
             Text(
                 text = user?.displayName ?: stringResource(R.string.user_unresolved_name),
+                color = color,
+                style = MaterialTheme.typography.titleMedium,
             )
         },
         leadingContent = {
@@ -95,6 +102,7 @@ fun MemberListItem(
             ) {
                 AvatarUser(
                     user = user,
+                    alpha = alpha,
                 )
             }
         },
@@ -102,14 +110,14 @@ fun MemberListItem(
             Icon(
                 imageVector = rsvp.answer.icon,
                 contentDescription = rsvp.answer.toResponse(),
-                tint = rsvp.answer.staticColorRole.color(),
+                tint = color,
             )
         },
         supportingContent = {
             if (rsvp.comment != "") {
                 Text(
                     text = rsvp.comment,
-                    color = rsvp.answer.staticColorRole.color(),
+                    color = color,
                 )
             }
         },
@@ -119,11 +127,13 @@ fun MemberListItem(
         expanded = expanded,
         onDismissRequest = { expanded = false }
     ) {
+        if (member.userId != session.myUserId) {
             DropdownMenuItem(
                 text = {
                     Text(stringResource(R.string.room_uninvite_label))
                 },
-            onClick = { expanded = false }
+                onClick = { expanded = false },
             )
         }
+    }
 }

app/src/main/java/eu/steffo/twom/composables/viewroom/ViewRoomForm.kt

@@ -20,6 +20,7 @@ import eu.steffo.twom.composables.errorhandling.LocalizableError
 import eu.steffo.twom.composables.matrix.LocalSession
 import eu.steffo.twom.composables.theme.basePadding
 import kotlinx.coroutines.launch
+import org.matrix.android.sdk.api.session.room.model.Membership
 import kotlin.jvm.optionals.getOrNull
 
 @Composable
@@ -62,7 +63,7 @@ fun ViewRoomForm() {
     }
 
     val member = room.membershipService().getRoomMember(session.myUserId)
-    if (member == null) {
+    if (member == null || member.membership != Membership.JOIN) {
         Row(Modifier.basePadding()) {
             ErrorText(
                 text = stringResource(R.string.room_error_self_notfound)
@@ -71,7 +72,8 @@ fun ViewRoomForm() {
         return
     }
 
-    val published = observeRSVP(room = room, member = member)
+    // JOIN status is checked above
+    val published = observeRSVP(room = room, member = member)!!
 
     var isPublishRunning by rememberSaveable { mutableStateOf(false) }
     val publishError by remember { mutableStateOf(LocalizableError()) }

app/src/main/java/eu/steffo/twom/composables/viewroom/ViewRoomScaffold.kt

@@ -1,17 +1,25 @@
 package eu.steffo.twom.composables.viewroom
 
+import androidx.compose.foundation.layout.ExperimentalLayoutApi
+import androidx.compose.foundation.layout.consumeWindowInsets
 import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Scaffold
+import androidx.compose.material3.rememberModalBottomSheetState
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.livedata.observeAsState
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import eu.steffo.twom.composables.matrix.LocalSession
 import eu.steffo.twom.composables.theme.TwoMTheme
 import org.matrix.android.sdk.api.session.Session
 import java.util.Optional
 
+@OptIn(ExperimentalMaterial3Api::class, ExperimentalLayoutApi::class)
 @Composable
 fun ViewRoomScaffold(
     session: Session,
@@ -20,6 +28,9 @@ fun ViewRoomScaffold(
     val room = Optional.ofNullable(session.roomService().getRoom(roomId))
     val roomSummary by session.roomService().getRoomSummaryLive(roomId).observeAsState()
 
+    val inviteDialogState = rememberModalBottomSheetState()
+    var inviteDialogExpanded by rememberSaveable { mutableStateOf(false) }
+
     TwoMTheme {
         CompositionLocalProvider(LocalSession provides session) {
             CompositionLocalProvider(LocalRoom provides room) {
@@ -32,7 +43,19 @@ fun ViewRoomScaffold(
                             ViewRoomContent(
                                 modifier = Modifier.padding(it),
                             )
+                            if (inviteDialogExpanded) {
+                                InviteSheet(
+                                    // FIXME: Does this work?
+                                    modifier = Modifier.consumeWindowInsets(it),
+                                    sheetState = inviteDialogState,
+                                    onDismissed = { inviteDialogExpanded = false },
+                                    onCompleted = { inviteDialogExpanded = false },
+                                )
+                            }
                         },
+                        floatingActionButton = {
+                            InviteFAB(onClick = { inviteDialogExpanded = true })
+                        }
                     )
                 }
             }

app/src/main/java/eu/steffo/twom/composables/viewroom/observeRSVP.kt

@@ -12,7 +12,7 @@ import org.matrix.android.sdk.api.session.room.model.Membership
 import org.matrix.android.sdk.api.session.room.model.RoomMemberSummary
 
 @Composable
-fun observeRSVP(room: Room, member: RoomMemberSummary): RSVP {
+fun observeRSVP(room: Room, member: RoomMemberSummary): RSVP? {
     if (member.membership == Membership.INVITE) {
         return RSVP(
             event = null,
@@ -21,6 +21,11 @@ fun observeRSVP(room: Room, member: RoomMemberSummary): RSVP {
         )
     }
 
+    // TODO: Add a DECLINED variant?
+    if (member.membership == Membership.LEAVE || member.membership == Membership.BAN) {
+        return null
+    }
+
     val request by room.stateService().getStateEventLive(
         eventType = TwoMGlobals.RSVP_STATE_TYPE,
         stateKey = QueryStringValue.Equals(member.userId),

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

@@ -59,7 +59,7 @@
     <string name="room_error_roomsummary_missing">The Matrix room summary context has not been initialized.</string>
     <string name="room_error_roomsummary_notfound">Could not find the requested Matrix room summary.</string>
     <string name="room_invite_username_placeholder">\@steffotwo:candy.steffo.eu</string>
-    <string name="room_invite_username_label">Username</string>
+    <string name="room_invite_username_label">User you want to invite</string>
     <string name="room_rsvp_comment_label">Reason</string>
     <string name="room_invite_button_label">Invite</string>
     <string name="room_invite_title">Send an invite</string>
@@ -83,4 +83,5 @@
     <string name="room_error_publish_generic">Something went wrong while updating your RSVP: %1$s</string>
     <string name="room_error_redact_generic">Your response has been updated, but something went wrong while attempting to remove your previous one: %1$s</string>
     <string name="room_error_self_notfound">You have been removed from the room.</string>
+    <string name="room_error_invite_generic">Something went wrong while sending the invite: %1$s</string>
 </resources>