Reply to a poll (#1848)

<!-- Please read [CONTRIBUTING.md](https://github.com/vector-im/element-x-android/blob/develop/CONTRIBUTING.md) before submitting your pull request -->
 
## Type of change

- [x] Feature
- [ ] Bugfix
- [ ] Technical
- [ ] Other :

## Content

Polls can now be replied to.

## Motivation and context

User story: https://github.com/vector-im/element-meta/issues/1976

## Screenshots / GIFs

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## Tests

<!-- Explain how you tested your development -->

- Step 1
- Step 2
- Step ...

## Tested devices

- [ ] Physical
- [ ] Emulator
- OS version(s):

## Checklist

<!-- Depending on the Pull Request content, it can be acceptable if some of the following checkboxes stay unchecked. -->

- [ ] Changes have been tested on an Android device or Android emulator with API 23
- [ ] UI change has been tested on both light and dark themes
- [ ] Accessibility has been taken into account. See https://github.com/vector-im/element-x-android/blob/develop/CONTRIBUTING.md#accessibility
- [ ] Pull request is based on the develop branch
- [ ] Pull request includes a new file under ./changelog.d. See https://github.com/vector-im/element-x-android/blob/develop/CONTRIBUTING.md#changelog
- [ ] Pull request includes screenshots or videos if containing UI changes
- [ ] Pull request includes a [sign off](https://matrix-org.github.io/synapse/latest/development/contributing_guide.html#sign-off)
- [ ] You've made a self review of your PR

changelog.d/1848.feature

@@ -0,0 +1 @@
+Reply to a poll

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/MessagesPresenter.kt

@@ -342,7 +342,10 @@ class MessagesPresenter @AssistedInject constructor(
             is TimelineItemLocationContent -> AttachmentThumbnailInfo(
                 type = AttachmentThumbnailType.Location,
             )
-            is TimelineItemPollContent, // TODO Polls: handle reply to
+            is TimelineItemPollContent -> AttachmentThumbnailInfo(
+                textContent = targetEvent.content.question,
+                type = AttachmentThumbnailType.Poll,
+            )
             is TimelineItemTextBasedContent,
             is TimelineItemRedactedContent,
             is TimelineItemStateContent,

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/actionlist/ActionListPresenter.kt

@@ -108,13 +108,10 @@ class ActionListPresenter @Inject constructor(
                 is TimelineItemPollContent -> {
                     buildList {
                         val isMineOrCanRedact = timelineItem.isMine || userCanRedact
-
-                        // TODO Polls: Reply to poll. Ensure to update `fun TimelineItemEventContent.canBeReplied()`
-                        //  when touching this
-                        // if (timelineItem.isRemote) {
-                        //     // Can only reply or forward messages already uploaded to the server
-                        //     add(TimelineItemAction.Reply)
-                        // }
+                        if (timelineItem.isRemote) {
+                            // Can only reply or forward messages already uploaded to the server
+                            add(TimelineItemAction.Reply)
+                        }
                         if (!timelineItem.content.isEnded && timelineItem.isRemote && isMineOrCanRedact) {
                             add(TimelineItemAction.EndPoll)
                         }

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/actionlist/ActionListView.kt

@@ -234,7 +234,6 @@ private fun MessageSummary(event: TimelineItem.Event, modifier: Modifier = Modif
     val textContent = remember(event.content) { formatter.format(event) }
 
     when (event.content) {
-        is TimelineItemPollContent, // TODO Polls: handle summary
         is TimelineItemTextBasedContent,
         is TimelineItemStateContent,
         is TimelineItemEncryptedContent,
@@ -317,6 +316,18 @@ private fun MessageSummary(event: TimelineItem.Event, modifier: Modifier = Modif
             }
             content = { ContentForBody(textContent) }
         }
+        is TimelineItemPollContent -> {
+            icon = {
+                AttachmentThumbnail(
+                    modifier = imageModifier,
+                    info = AttachmentThumbnailInfo(
+                        textContent = textContent,
+                        type = AttachmentThumbnailType.Poll,
+                    )
+                )
+            }
+            content = { ContentForBody(textContent) }
+        }
     }
     Row(modifier = modifier) {
         icon()

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/TimelineItemEventRow.kt

@@ -100,6 +100,7 @@ import io.element.android.libraries.matrix.api.timeline.item.event.ImageMessageT
 import io.element.android.libraries.matrix.api.timeline.item.event.InReplyTo
 import io.element.android.libraries.matrix.api.timeline.item.event.LocationMessageType
 import io.element.android.libraries.matrix.api.timeline.item.event.MessageContent
+import io.element.android.libraries.matrix.api.timeline.item.event.PollContent
 import io.element.android.libraries.matrix.api.timeline.item.event.TextMessageType
 import io.element.android.libraries.matrix.api.timeline.item.event.VideoMessageType
 import io.element.android.libraries.matrix.api.timeline.item.event.VoiceMessageType
@@ -638,35 +639,41 @@ private fun ReplyToContent(
 }
 
 private fun attachmentThumbnailInfoForInReplyTo(inReplyTo: InReplyTo.Ready): AttachmentThumbnailInfo? {
-    val messageContent = inReplyTo.content as? MessageContent ?: return null
-    return when (val type = messageContent.type) {
-        is ImageMessageType -> AttachmentThumbnailInfo(
-            thumbnailSource = type.info?.thumbnailSource ?: type.source,
-            textContent = messageContent.body,
-            type = AttachmentThumbnailType.Image,
-            blurHash = type.info?.blurhash,
-        )
-        is VideoMessageType -> AttachmentThumbnailInfo(
-            thumbnailSource = type.info?.thumbnailSource,
-            textContent = messageContent.body,
-            type = AttachmentThumbnailType.Video,
-            blurHash = type.info?.blurhash,
-        )
-        is FileMessageType -> AttachmentThumbnailInfo(
-            thumbnailSource = type.info?.thumbnailSource,
-            textContent = messageContent.body,
-            type = AttachmentThumbnailType.File,
-        )
-        is LocationMessageType -> AttachmentThumbnailInfo(
-            textContent = messageContent.body,
-            type = AttachmentThumbnailType.Location,
-        )
-        is AudioMessageType -> AttachmentThumbnailInfo(
-            textContent = messageContent.body,
-            type = AttachmentThumbnailType.Audio,
-        )
-        is VoiceMessageType -> AttachmentThumbnailInfo(
-            type = AttachmentThumbnailType.Voice,
+    return when (val eventContent = inReplyTo.content) {
+        is MessageContent -> when (val type = eventContent.type) {
+            is ImageMessageType -> AttachmentThumbnailInfo(
+                thumbnailSource = type.info?.thumbnailSource ?: type.source,
+                textContent = eventContent.body,
+                type = AttachmentThumbnailType.Image,
+                blurHash = type.info?.blurhash,
+            )
+            is VideoMessageType -> AttachmentThumbnailInfo(
+                thumbnailSource = type.info?.thumbnailSource,
+                textContent = eventContent.body,
+                type = AttachmentThumbnailType.Video,
+                blurHash = type.info?.blurhash,
+            )
+            is FileMessageType -> AttachmentThumbnailInfo(
+                thumbnailSource = type.info?.thumbnailSource,
+                textContent = eventContent.body,
+                type = AttachmentThumbnailType.File,
+            )
+            is LocationMessageType -> AttachmentThumbnailInfo(
+                textContent = eventContent.body,
+                type = AttachmentThumbnailType.Location,
+            )
+            is AudioMessageType -> AttachmentThumbnailInfo(
+                textContent = eventContent.body,
+                type = AttachmentThumbnailType.Audio,
+            )
+            is VoiceMessageType -> AttachmentThumbnailInfo(
+                type = AttachmentThumbnailType.Voice,
+            )
+            else -> null
+        }
+        is PollContent -> AttachmentThumbnailInfo(
+            textContent = eventContent.question,
+            type = AttachmentThumbnailType.Poll,
         )
         else -> null
     }

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/model/event/TimelineItemEventContent.kt

@@ -41,8 +41,7 @@ fun TimelineItemEventContent.canBeCopied(): Boolean =
 fun TimelineItemEventContent.canBeRepliedTo(): Boolean =
     when (this) {
         is TimelineItemRedactedContent,
-        is TimelineItemStateContent,
-        is TimelineItemPollContent -> false
+        is TimelineItemStateContent -> false
         else -> true
     }
 

features/messages/impl/src/test/kotlin/io/element/android/features/messages/MessagesPresenterTest.kt

@@ -41,6 +41,7 @@ import io.element.android.features.messages.impl.timeline.model.event.TimelineIt
 import io.element.android.features.messages.impl.timeline.model.event.TimelineItemImageContent
 import io.element.android.features.messages.impl.timeline.model.event.TimelineItemTextContent
 import io.element.android.features.messages.impl.timeline.model.event.TimelineItemVideoContent
+import io.element.android.features.messages.impl.timeline.model.event.aTimelineItemPollContent
 import io.element.android.features.messages.impl.voicemessages.composer.VoiceMessageComposerPlayer
 import io.element.android.features.messages.impl.voicemessages.composer.VoiceMessageComposerPresenter
 import io.element.android.features.messages.media.FakeLocalMediaFactory
@@ -612,6 +613,28 @@ class MessagesPresenterTest {
         }
     }
 
+    @Test
+    fun `present - handle action reply to a poll`() = runTest {
+        val presenter = createMessagesPresenter()
+        moleculeFlow(RecompositionMode.Immediate) {
+            presenter.present()
+        }.test {
+            skipItems(1)
+            val initialState = awaitItem()
+            val poll = aMessageEvent(
+                content = aTimelineItemPollContent()
+            )
+            initialState.eventSink.invoke(MessagesEvents.HandleAction(TimelineItemAction.Reply, poll))
+            val finalState = awaitItem()
+            assertThat(finalState.composerState.mode).isInstanceOf(MessageComposerMode.Reply::class.java)
+            val replyMode = finalState.composerState.mode as MessageComposerMode.Reply
+            assertThat(replyMode.attachmentThumbnailInfo).isNotNull()
+            assertThat(replyMode.attachmentThumbnailInfo?.textContent)
+                .isEqualTo("What type of food should we have at the party?")
+            assertThat(awaitItem().actionListState.target).isEqualTo(ActionListState.Target.None)
+        }
+    }
+
     private fun TestScope.createMessagesPresenter(
         coroutineDispatchers: CoroutineDispatchers = testCoroutineDispatchers(),
         matrixRoom: MatrixRoom = FakeMatrixRoom().apply {

features/messages/impl/src/test/kotlin/io/element/android/features/messages/actionlist/ActionListPresenterTest.kt

@@ -426,6 +426,7 @@ class ActionListPresenterTest {
                 ActionListState.Target.Success(
                     messageEvent,
                     persistentListOf(
+                        TimelineItemAction.Reply,
                         TimelineItemAction.EndPoll,
                         TimelineItemAction.Redact,
                     )
@@ -452,6 +453,7 @@ class ActionListPresenterTest {
                 ActionListState.Target.Success(
                     messageEvent,
                     persistentListOf(
+                        TimelineItemAction.Reply,
                         TimelineItemAction.Redact,
                     )
                 )

libraries/matrixui/src/main/kotlin/io/element/android/libraries/matrix/ui/components/AttachmentThumbnail.kt

@@ -25,6 +25,7 @@ import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.outlined.GraphicEq
 import androidx.compose.material.icons.outlined.Image
+import androidx.compose.material.icons.outlined.Poll
 import androidx.compose.material.icons.outlined.VideoCameraBack
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.runtime.Composable
@@ -122,6 +123,12 @@ fun AttachmentThumbnail(
                     )
                      */
                 }
+                AttachmentThumbnailType.Poll -> {
+                    Icon(
+                        imageVector = Icons.Outlined.Poll,
+                        contentDescription = info.textContent,
+                    )
+                }
             }
         }
     }
@@ -129,7 +136,7 @@ fun AttachmentThumbnail(
 
 @Parcelize
 enum class AttachmentThumbnailType : Parcelable {
-    Image, Video, File, Audio, Location, Voice
+    Image, Video, File, Audio, Location, Voice, Poll
 }
 
 @Parcelize

libraries/matrixui/src/main/kotlin/io/element/android/libraries/matrix/ui/components/AttachmentThumbnailInfoProvider.kt

@@ -30,6 +30,7 @@ open class AttachmentThumbnailInfoProvider : PreviewParameterProvider<Attachment
             anAttachmentThumbnailInfo(type = AttachmentThumbnailType.File),
             anAttachmentThumbnailInfo(type = AttachmentThumbnailType.Location),
             anAttachmentThumbnailInfo(type = AttachmentThumbnailType.Voice),
+            anAttachmentThumbnailInfo(type = AttachmentThumbnailType.Poll),
         )
 }