feat(join by alias) : improve state management

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

@@ -9,6 +9,7 @@ package io.element.android.features.createroom.impl.joinbyaddress
 
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -22,9 +23,13 @@ import io.element.android.libraries.architecture.Presenter
 import io.element.android.libraries.core.data.tryOrNull
 import io.element.android.libraries.matrix.api.MatrixClient
 import io.element.android.libraries.matrix.api.core.RoomAlias
-import io.element.android.libraries.matrix.api.core.RoomIdOrAlias
+import io.element.android.libraries.matrix.api.core.toRoomIdOrAlias
 import io.element.android.libraries.matrix.api.room.alias.RoomAliasHelper
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.withTimeoutOrNull
+import kotlin.time.Duration.Companion.seconds
+
+private const val ADDRESS_RESOLVE_TIMEOUT_IN_SECONDS = 10
 
 class JoinRoomByAddressPresenter @AssistedInject constructor(
     @Assisted private val navigator: CreateRoomNavigator,
@@ -40,16 +45,20 @@ class JoinRoomByAddressPresenter @AssistedInject constructor(
     @Composable
     override fun present(): JoinRoomByAddressState {
         var address by remember { mutableStateOf("") }
-        var addressState by remember { mutableStateOf<RoomAddressState>(RoomAddressState.Unknown) }
+        var internalAddressState by remember { mutableStateOf<RoomAddressState>(RoomAddressState.Unknown) }
+        var validateAddress: Boolean by remember { mutableStateOf(false) }
 
         fun handleEvents(event: JoinRoomByAddressEvents) {
             when (event) {
                 JoinRoomByAddressEvents.Continue -> {
-                    navigator.onDismissJoinRoomByAddress()
-                    navigator.onOpenRoom(RoomIdOrAlias.Alias(RoomAlias(address)))
+                    when (val currentState = internalAddressState) {
+                        is RoomAddressState.RoomFound -> onRoomFound(currentState)
+                        else -> validateAddress = true
+                    }
                 }
                 JoinRoomByAddressEvents.Dismiss -> navigator.onDismissJoinRoomByAddress()
                 is JoinRoomByAddressEvents.UpdateAddress -> {
+                    validateAddress = false
                     address = event.address.trim()
                 }
             }
@@ -57,9 +66,25 @@ class JoinRoomByAddressPresenter @AssistedInject constructor(
 
         RoomAddressStateEffect(
             fullAddress = address,
-            onRoomAddressStateChange = { addressState = it }
+            onRoomAddressStateChange = { addressState ->
+                internalAddressState = addressState
+                if (addressState is RoomAddressState.RoomFound && validateAddress) {
+                    onRoomFound(addressState)
+                }
+            }
         )
 
+        val addressState by remember {
+            derivedStateOf {
+                // We only want to show the "RoomFound" state as long as the user didn't validate the address.
+                if (validateAddress || internalAddressState is RoomAddressState.RoomFound) {
+                    internalAddressState
+                } else {
+                    RoomAddressState.Unknown
+                }
+            }
+        }
+
         return JoinRoomByAddressState(
             address = address,
             addressState = addressState,
@@ -67,6 +92,11 @@ class JoinRoomByAddressPresenter @AssistedInject constructor(
         )
     }
 
+    private fun onRoomFound(state: RoomAddressState.RoomFound) {
+        navigator.onDismissJoinRoomByAddress()
+        navigator.onOpenRoom(state.resolved.roomId.toRoomIdOrAlias())
+    }
+
     @Composable
     private fun RoomAddressStateEffect(
         fullAddress: String,
@@ -74,24 +104,35 @@ class JoinRoomByAddressPresenter @AssistedInject constructor(
     ) {
         val onChange by rememberUpdatedState(onRoomAddressStateChange)
         LaunchedEffect(fullAddress) {
-            if (fullAddress.isEmpty()) {
-                onChange(RoomAddressState.Unknown)
-                return@LaunchedEffect
-            }
-            // debounce the room address validation
+            // Whenever the address changes, reset the state to unknown
+            onChange(RoomAddressState.Unknown)
+            // debounce the room address resolution
             delay(300)
             val roomAlias = tryOrNull { RoomAlias(fullAddress) }
-            if (roomAlias == null || !roomAliasHelper.isRoomAliasValid(roomAlias)) {
-                onChange(RoomAddressState.Invalid)
+            if (roomAlias != null && roomAliasHelper.isRoomAliasValid(roomAlias)) {
+                onChange(RoomAddressState.Resolving)
+                onChange(client.resolveRoomAddress(roomAlias))
             } else {
-                onChange(RoomAddressState.Valid(matchingRoomFound = false))
-                client.resolveRoomAlias(roomAlias)
-                    .onSuccess { resolved ->
-                        onChange(RoomAddressState.Valid(matchingRoomFound = resolved.isPresent))
-                    }
+                onChange(RoomAddressState.Invalid)
             }
         }
     }
+
+    private suspend fun MatrixClient.resolveRoomAddress(roomAlias: RoomAlias): RoomAddressState {
+        return withTimeoutOrNull(ADDRESS_RESOLVE_TIMEOUT_IN_SECONDS.seconds) {
+            resolveRoomAlias(roomAlias)
+                .fold(
+                    onSuccess = { resolved ->
+                        if (resolved.isPresent) {
+                            RoomAddressState.RoomFound(resolved.get())
+                        } else {
+                            RoomAddressState.RoomNotFound
+                        }
+                    },
+                    onFailure = { _ -> RoomAddressState.RoomNotFound }
+                )
+        } ?: RoomAddressState.RoomNotFound
+    }
 }
 
 

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

@@ -8,6 +8,7 @@
 package io.element.android.features.createroom.impl.joinbyaddress
 
 import androidx.compose.runtime.Immutable
+import io.element.android.libraries.matrix.api.room.alias.ResolvedRoomAlias
 
 data class JoinRoomByAddressState(
     val address: String,
@@ -19,5 +20,7 @@ data class JoinRoomByAddressState(
 sealed interface RoomAddressState {
     data object Unknown : RoomAddressState
     data object Invalid : RoomAddressState
-    data class Valid(val matchingRoomFound: Boolean) : RoomAddressState
+    data object Resolving : RoomAddressState
+    data object RoomNotFound : RoomAddressState
+    data class RoomFound(val resolved: ResolvedRoomAlias) : RoomAddressState
 }

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

@@ -8,16 +8,21 @@
 package io.element.android.features.createroom.impl.joinbyaddress
 
 import androidx.compose.ui.tooling.preview.PreviewParameterProvider
+import io.element.android.libraries.matrix.api.core.RoomId
+import io.element.android.libraries.matrix.api.room.alias.ResolvedRoomAlias
 
 open class JoinRoomByAddressStateProvider : PreviewParameterProvider<JoinRoomByAddressState> {
     override val values: Sequence<JoinRoomByAddressState>
         get() = sequenceOf(
             aJoinRoomByAddressState(),
-            aJoinRoomByAddressState("#room-"),
-            aJoinRoomByAddressState("#room-", addressState = RoomAddressState.Invalid),
-            aJoinRoomByAddressState("#room-name:matrix.org", addressState = RoomAddressState.Valid(true)),
-            aJoinRoomByAddressState("#room-name-here:matrix.org", addressState = RoomAddressState.Valid(false)),
-            // Add other states here
+            aJoinRoomByAddressState(address = "#room-"),
+            aJoinRoomByAddressState(address = "#room-", addressState = RoomAddressState.Invalid),
+            aJoinRoomByAddressState(address = "#room-name:matrix.org", addressState = RoomAddressState.Resolving),
+            aJoinRoomByAddressState(address = "#room-name-none:matrix.org", addressState = RoomAddressState.RoomNotFound),
+            aJoinRoomByAddressState(
+                address = "#room-name:matrix.org",
+                addressState = RoomAddressState.RoomFound(ResolvedRoomAlias(RoomId("!aRoom:id"), emptyList())),
+            ),
         )
 }
 

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

@@ -12,6 +12,7 @@ import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.text.KeyboardActions
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.rememberModalBottomSheetState
@@ -23,7 +24,9 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.focus.FocusRequester
 import androidx.compose.ui.focus.focusRequester
 import androidx.compose.ui.res.stringResource
+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.tooling.preview.PreviewParameter
 import androidx.compose.ui.unit.dp
 import io.element.android.libraries.designsystem.preview.ElementPreview
@@ -60,13 +63,16 @@ fun JoinRoomByAddressView(
                 requestFocus = sheetState.isVisible,
                 onAddressChange = {
                     state.eventSink(JoinRoomByAddressEvents.UpdateAddress(it))
-                }
+                },
+                onContinue = {
+                    state.eventSink(JoinRoomByAddressEvents.Continue)
+                },
             )
             Spacer(modifier = Modifier.height(24.dp))
             Button(
                 text = stringResource(CommonStrings.action_continue),
                 modifier = Modifier.fillMaxWidth(),
-                enabled = state.addressState is RoomAddressState.Valid,
+                showProgress = state.addressState is RoomAddressState.Resolving,
                 onClick = {
                     state.eventSink(JoinRoomByAddressEvents.Continue)
                 }
@@ -81,6 +87,7 @@ private fun RoomAddressField(
     addressState: RoomAddressState,
     requestFocus: Boolean,
     onAddressChange: (String) -> Unit,
+    onContinue: () -> Unit,
     modifier: Modifier = Modifier,
 ) {
     val focusRequester = remember { FocusRequester() }
@@ -94,24 +101,26 @@ private fun RoomAddressField(
         placeholder = "Enter...",
         supportingText = when (addressState) {
             RoomAddressState.Invalid -> "Not a valid address"
-            RoomAddressState.Unknown -> "e.g. #room-name:matrix.org"
-            is RoomAddressState.Valid -> if (addressState.matchingRoomFound) {
-                "Matching room found"
-            } else {
-                "e.g. #room-name:matrix.org"
-            }
+            is RoomAddressState.RoomFound -> "Matching room found"
+            RoomAddressState.RoomNotFound -> "Room not found"
+            RoomAddressState.Unknown, RoomAddressState.Resolving -> "e.g. #room-name:matrix.org"
         },
         validity = when (addressState) {
-            RoomAddressState.Unknown -> null
-            RoomAddressState.Invalid -> TextFieldValidity.Invalid
-            is RoomAddressState.Valid -> if (addressState.matchingRoomFound) TextFieldValidity.Valid else null
+            RoomAddressState.Unknown, RoomAddressState.Resolving -> null
+            RoomAddressState.Invalid, RoomAddressState.RoomNotFound -> TextFieldValidity.Invalid
+            is RoomAddressState.RoomFound -> TextFieldValidity.Valid
         },
         onValueChange = onAddressChange,
         singleLine = true,
         keyboardOptions = KeyboardOptions(
             capitalization = KeyboardCapitalization.None,
             autoCorrectEnabled = false,
+            keyboardType = KeyboardType.Uri,
+            imeAction = ImeAction.Go
         ),
+        keyboardActions = KeyboardActions(
+            onGo = { onContinue() }
+        )
     )
 }