Create room : improve handling of room address

features/createroom/impl/src/main/kotlin/io/element/android/features/createroom/impl/CreateRoomConfig.kt

@@ -19,6 +19,4 @@ data class CreateRoomConfig(
     val avatarUri: Uri? = null,
     val invites: ImmutableList<MatrixUser> = persistentListOf(),
     val roomVisibility: RoomVisibilityState = RoomVisibilityState.Private,
-) {
-    val isValid = roomName.isNullOrEmpty().not() && roomVisibility.isValid()
-}
+)

features/createroom/impl/src/main/kotlin/io/element/android/features/createroom/impl/CreateRoomDataStore.kt

@@ -11,13 +11,13 @@
 import io.element.android.features.createroom.impl.configureroom.RoomAccess
 import io.element.android.features.createroom.impl.configureroom.RoomAccessItem
 import io.element.android.features.createroom.impl.configureroom.RoomAddress
-import io.element.android.features.createroom.impl.configureroom.RoomAddressErrorState
 import io.element.android.features.createroom.impl.configureroom.RoomVisibilityItem
 import io.element.android.features.createroom.impl.configureroom.RoomVisibilityState
 import io.element.android.features.createroom.impl.di.CreateRoomScope
 import io.element.android.features.createroom.impl.userlist.UserListDataStore
 import io.element.android.libraries.androidutils.file.safeDelete
 import io.element.android.libraries.di.SingleIn
+import io.element.android.libraries.matrix.api.room.alias.RoomAliasHelper
 import kotlinx.collections.immutable.toImmutableList
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -29,6 +29,7 @@
 @SingleIn(CreateRoomScope::class)
 class CreateRoomDataStore @Inject constructor(
     val selectedUserListDataStore: UserListDataStore,
+    private val roomAliasHelper: RoomAliasHelper,
 ) {
     private val createRoomConfigFlow: MutableStateFlow<CreateRoomConfig> = MutableStateFlow(CreateRoomConfig())
     private var cachedAvatarUri: Uri? = null
@@ -46,23 +47,23 @@
 
     fun setRoomName(roomName: String) {
         createRoomConfigFlow.getAndUpdate { config ->
-            /*
             val newVisibility = when (config.roomVisibility) {
                 is RoomVisibilityState.Public -> {
                     val roomAddress = config.roomVisibility.roomAddress
                     if (roomAddress is RoomAddress.AutoFilled || roomName.isEmpty()) {
+                        val roomAliasName = roomAliasHelper.roomAliasNameFromRoomDisplayName(roomName)
                         config.roomVisibility.copy(
-                            roomAddress = RoomAddress.AutoFilled(roomName),
+                            roomAddress = RoomAddress.AutoFilled(roomAliasName),
                         )
                     } else {
                         config.roomVisibility
                     }
                 }
                 else -> config.roomVisibility
             }
-             */
             config.copy(
                 roomName = roomName.takeIf { it.isNotEmpty() },
+                roomVisibility = newVisibility,
             )
         }
     }
@@ -85,11 +86,13 @@
             config.copy(
                 roomVisibility = when (visibility) {
                     RoomVisibilityItem.Private -> RoomVisibilityState.Private
-                    RoomVisibilityItem.Public -> RoomVisibilityState.Public(
-                        roomAddress = RoomAddress.AutoFilled(config.roomName.orEmpty()),
-                        roomAddressErrorState = RoomAddressErrorState.None,
-                        roomAccess = RoomAccess.Anyone,
-                    )
+                    RoomVisibilityItem.Public -> {
+                        val roomAliasName = roomAliasHelper.roomAliasNameFromRoomDisplayName(config.roomName.orEmpty())
+                        RoomVisibilityState.Public(
+                            roomAddress = RoomAddress.AutoFilled(roomAliasName),
+                            roomAccess = RoomAccess.Anyone,
+                        )
+                    }
                 }
             )
         }

features/createroom/impl/src/main/kotlin/io/element/android/features/createroom/impl/configureroom/ConfigureRoomPresenter.kt

@@ -17,6 +17,7 @@
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.rememberUpdatedState
 import im.vector.app.features.analytics.plan.CreatedRoom
 import io.element.android.features.createroom.impl.CreateRoomConfig
 import io.element.android.features.createroom.impl.CreateRoomDataStore
@@ -31,6 +32,8 @@
 import io.element.android.libraries.matrix.api.createroom.CreateRoomParameters
 import io.element.android.libraries.matrix.api.createroom.RoomPreset
 import io.element.android.libraries.matrix.api.createroom.RoomVisibility
+import io.element.android.libraries.matrix.api.room.alias.RoomAliasHelper
+import io.element.android.libraries.matrix.api.roomAliasFromName
 import io.element.android.libraries.matrix.ui.media.AvatarAction
 import io.element.android.libraries.mediapickers.api.PickerProvider
 import io.element.android.libraries.mediaupload.api.MediaPreProcessor
@@ -39,9 +42,12 @@
 import io.element.android.services.analytics.api.AnalyticsService
 import kotlinx.collections.immutable.toImmutableList
 import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import timber.log.Timber
+import java.util.Optional
 import javax.inject.Inject
+import kotlin.jvm.optionals.getOrNull
 
 class ConfigureRoomPresenter @Inject constructor(
     private val dataStore: CreateRoomDataStore,
@@ -51,16 +57,20 @@
     private val analyticsService: AnalyticsService,
     permissionsPresenterFactory: PermissionsPresenter.Factory,
     private val featureFlagService: FeatureFlagService,
+    private val roomAliasHelper: RoomAliasHelper,
 ) : Presenter<ConfigureRoomState> {
     private val cameraPermissionPresenter: PermissionsPresenter = permissionsPresenterFactory.create(android.Manifest.permission.CAMERA)
     private var pendingPermissionRequest = false
 
     @Composable
     override fun present(): ConfigureRoomState {
         val cameraPermissionState = cameraPermissionPresenter.present()
-        val createRoomConfig = dataStore.createRoomConfigWithInvites.collectAsState(CreateRoomConfig())
+        val createRoomConfig by dataStore.createRoomConfigWithInvites.collectAsState(CreateRoomConfig())
         val homeserverName = remember { matrixClient.userIdServerName() }
         val isKnockFeatureEnabled by featureFlagService.isFeatureEnabledFlow(FeatureFlags.Knock).collectAsState(initial = false)
+        val roomAddressValidity = remember {
+            mutableStateOf<RoomAddressValidity>(RoomAddressValidity.Unknown)
+        }
 
         val cameraPhotoPicker = mediaPickerProvider.registerCameraPhotoPicker(
             onResult = { uri -> if (uri != null) dataStore.setAvatarUri(uri = uri, cached = true) },
@@ -69,12 +79,12 @@
             onResult = { uri -> if (uri != null) dataStore.setAvatarUri(uri = uri) }
         )
 
-        val avatarActions by remember(createRoomConfig.value.avatarUri) {
+        val avatarActions by remember(createRoomConfig.avatarUri) {
             derivedStateOf {
                 listOfNotNull(
                     AvatarAction.TakePhoto,
                     AvatarAction.ChoosePhoto,
-                    AvatarAction.Remove.takeIf { createRoomConfig.value.avatarUri != null },
+                    AvatarAction.Remove.takeIf { createRoomConfig.avatarUri != null },
                 ).toImmutableList()
             }
         }
@@ -86,6 +96,10 @@
             }
         }
 
+        RoomAddressValidityEffect(createRoomConfig.roomVisibility.roomAddress()) { newRoomAddressValidity ->
+            roomAddressValidity.value = newRoomAddressValidity
+        }
+
         val localCoroutineScope = rememberCoroutineScope()
         val createRoomAction: MutableState<AsyncAction<RoomId>> = remember { mutableStateOf(AsyncAction.Uninitialized) }
 
@@ -102,7 +116,7 @@
                 is ConfigureRoomEvents.RemoveUserFromSelection -> dataStore.selectedUserListDataStore.removeUserFromSelection(event.matrixUser)
                 is ConfigureRoomEvents.RoomAccessChanged -> dataStore.setRoomAccess(event.roomAccess)
                 is ConfigureRoomEvents.RoomAddressChanged -> dataStore.setRoomAddress(event.roomAddress)
-                is ConfigureRoomEvents.CreateRoom -> createRoom(createRoomConfig.value)
+                is ConfigureRoomEvents.CreateRoom -> createRoom(createRoomConfig)
                 is ConfigureRoomEvents.HandleAvatarAction -> {
                     when (event.action) {
                         AvatarAction.ChoosePhoto -> galleryImagePicker.launch()
@@ -122,15 +136,49 @@
 
         return ConfigureRoomState(
             isKnockFeatureEnabled = isKnockFeatureEnabled,
-            config = createRoomConfig.value,
+            config = createRoomConfig,
             avatarActions = avatarActions,
             createRoomAction = createRoomAction.value,
             cameraPermissionState = cameraPermissionState,
             homeserverName = homeserverName,
+            roomAddressValidity = roomAddressValidity.value,
             eventSink = ::handleEvents,
         )
     }
 
+    @Composable
+    private fun RoomAddressValidityEffect(
+        roomAddress: Optional<String>,
+        onRoomAddressValidityChange: (RoomAddressValidity) -> Unit,
+    ) {
+        val onChange by rememberUpdatedState(onRoomAddressValidityChange)
+        LaunchedEffect(roomAddress) {
+            val roomAliasName = roomAddress.getOrNull().orEmpty()
+            if (roomAliasName.isEmpty()) {
+                onChange(RoomAddressValidity.Unknown)
+                return@LaunchedEffect
+            }
+            // debounce the room address validation
+            delay(300)
+            val roomAlias = matrixClient.roomAliasFromName(roomAliasName).getOrNull()
+            if (roomAlias == null || !roomAliasHelper.isRoomAliasValid(roomAlias)) {
+                onChange(RoomAddressValidity.InvalidSymbols)
+            } else {
+                matrixClient.resolveRoomAlias(roomAlias)
+                    .onSuccess { resolved ->
+                        if (resolved.isPresent) {
+                            onChange(RoomAddressValidity.NotAvailable)
+                        } else {
+                            onChange(RoomAddressValidity.Valid)
+                        }
+                    }
+                    .onFailure {
+                        onChange(RoomAddressValidity.Valid)
+                    }
+            }
+        }
+    }
+
     private fun CoroutineScope.createRoom(
         config: CreateRoomConfig,
         createRoomAction: MutableState<AsyncAction<RoomId>>
@@ -148,7 +196,7 @@
                     preset = RoomPreset.PUBLIC_CHAT,
                     invite = config.invites.map { it.userId },
                     avatar = avatarUrl,
-                    canonicalAlias = config.roomVisibility.roomAddress()
+                    roomAliasName = config.roomVisibility.roomAddress()
                 )
             } else {
                 CreateRoomParameters(

features/createroom/impl/src/main/kotlin/io/element/android/features/createroom/impl/configureroom/ConfigureRoomState.kt

@@ -20,6 +20,10 @@ data class ConfigureRoomState(
     val avatarActions: ImmutableList<AvatarAction>,
     val createRoomAction: AsyncAction<RoomId>,
     val cameraPermissionState: PermissionsState,
+    val roomAddressValidity: RoomAddressValidity,
     val homeserverName: String,
     val eventSink: (ConfigureRoomEvents) -> Unit
-)
+) {
+    val isValid: Boolean = config.roomName?.isNotEmpty() == true &&
+        (config.roomVisibility is RoomVisibilityState.Private || roomAddressValidity == RoomAddressValidity.Valid)
+}

features/createroom/impl/src/main/kotlin/io/element/android/features/createroom/impl/configureroom/ConfigureRoomStateProvider.kt

@@ -28,9 +28,8 @@ open class ConfigureRoomStateProvider : PreviewParameterProvider<ConfigureRoomSt
                     topic = "Room topic for this room when the text goes onto multiple lines and is really long, there shouldn’t be more than 3 lines",
                     invites = aMatrixUserList().toImmutableList(),
                     roomVisibility = RoomVisibilityState.Public(
-                        roomAddress = RoomAddress.AutoFilled("Room 101"),
+                        roomAddress = RoomAddress.AutoFilled("Room-101"),
                         roomAccess = RoomAccess.Knocking,
-                        roomAddressErrorState = RoomAddressErrorState.None,
                     ),
                 ),
             ),
@@ -40,12 +39,44 @@ open class ConfigureRoomStateProvider : PreviewParameterProvider<ConfigureRoomSt
                     topic = "Room topic for this room when the text goes onto multiple lines and is really long, there shouldn’t be more than 3 lines",
                     invites = aMatrixUserList().toImmutableList(),
                     roomVisibility = RoomVisibilityState.Public(
-                        roomAddress = RoomAddress.AutoFilled("Room 101"),
+                        roomAddress = RoomAddress.AutoFilled("Room-101"),
                         roomAccess = RoomAccess.Knocking,
-                        roomAddressErrorState = RoomAddressErrorState.None,
                     ),
                 ),
             ),
+            aConfigureRoomState(
+                config = CreateRoomConfig(
+                    roomName = "Room 101",
+                    topic = "Room topic for this room when the text goes onto multiple lines and is really long, there shouldn’t be more than 3 lines",
+                    roomVisibility = RoomVisibilityState.Public(
+                        roomAddress = RoomAddress.AutoFilled("Room-101"),
+                        roomAccess = RoomAccess.Knocking,
+                    ),
+                ),
+                roomAddressValidity = RoomAddressValidity.NotAvailable,
+            ),
+            aConfigureRoomState(
+                config = CreateRoomConfig(
+                    roomName = "Room 101",
+                    topic = "Room topic for this room when the text goes onto multiple lines and is really long, there shouldn’t be more than 3 lines",
+                    roomVisibility = RoomVisibilityState.Public(
+                        roomAddress = RoomAddress.AutoFilled("Room-101"),
+                        roomAccess = RoomAccess.Knocking,
+                    ),
+                ),
+                roomAddressValidity = RoomAddressValidity.InvalidSymbols,
+            ),
+            aConfigureRoomState(
+                config = CreateRoomConfig(
+                    roomName = "Room 101",
+                    topic = "Room topic for this room when the text goes onto multiple lines and is really long, there shouldn’t be more than 3 lines",
+                    roomVisibility = RoomVisibilityState.Public(
+                        roomAddress = RoomAddress.AutoFilled("Room-101"),
+                        roomAccess = RoomAccess.Knocking,
+                    ),
+                ),
+                roomAddressValidity = RoomAddressValidity.Valid,
+            ),
         )
 }
 
@@ -56,6 +87,7 @@ fun aConfigureRoomState(
     createRoomAction: AsyncAction<RoomId> = AsyncAction.Uninitialized,
     cameraPermissionState: PermissionsState = aPermissionsState(showDialog = false),
     homeserverName: String = "matrix.org",
+    roomAddressValidity: RoomAddressValidity = RoomAddressValidity.Valid,
     eventSink: (ConfigureRoomEvents) -> Unit = { },
 ) = ConfigureRoomState(
     config = config,
@@ -64,5 +96,6 @@ fun aConfigureRoomState(
     createRoomAction = createRoomAction,
     cameraPermissionState = cameraPermissionState,
     homeserverName = homeserverName,
+    roomAddressValidity = roomAddressValidity,
     eventSink = eventSink,
 )

features/createroom/impl/src/main/kotlin/io/element/android/features/createroom/impl/configureroom/ConfigureRoomView.kt

@@ -14,6 +14,7 @@ import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.ColumnScope
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.consumeWindowInsets
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.imePadding
@@ -79,7 +80,7 @@ fun ConfigureRoomView(
         modifier = modifier.clearFocusOnTap(focusManager),
         topBar = {
             ConfigureRoomToolbar(
-                isNextActionEnabled = state.config.isValid,
+                isNextActionEnabled = state.isValid,
                 onBackClick = onBackClick,
                 onNextClick = {
                     focusManager.clearFocus()
@@ -143,8 +144,10 @@ fun ConfigureRoomView(
                     modifier = Modifier.padding(horizontal = 16.dp),
                     address = state.config.roomVisibility.roomAddress,
                     homeserverName = state.homeserverName,
+                    addressValidity = state.roomAddressValidity,
                     onAddressChange = { state.eventSink(ConfigureRoomEvents.RoomAddressChanged(it)) },
                 )
+                Spacer(Modifier)
             }
         }
     }
@@ -319,6 +322,7 @@ private fun RoomAccessOptions(
 private fun RoomAddressField(
     address: RoomAddress,
     homeserverName: String,
+    addressValidity: RoomAddressValidity,
     onAddressChange: (String) -> Unit,
     modifier: Modifier = Modifier,
 ) {
@@ -340,7 +344,16 @@ private fun RoomAddressField(
                 color = ElementTheme.colors.textSecondary,
             )
         },
-        supportingText = stringResource(R.string.screen_create_room_room_address_section_footer),
+        supportingText = when (addressValidity) {
+            RoomAddressValidity.InvalidSymbols -> {
+                stringResource(R.string.screen_create_room_room_address_invalid_symbols_error_description)
+            }
+            RoomAddressValidity.NotAvailable -> {
+                stringResource(R.string.screen_create_room_room_address_not_available_error_description)
+            }
+            else -> stringResource(R.string.screen_create_room_room_address_section_footer)
+        },
+        isError = addressValidity.isError(),
         onValueChange = onAddressChange,
         singleLine = true,
     )