Use a dedicated model for `rooms/{roomId}/hierarchy` endpoint result.

`rooms.children_state` is now a list of `SpaceChildSummaryEvent` instead of a list of `Event`.

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/space/SpaceHierarchyData.kt

@@ -16,13 +16,13 @@
 
 package org.matrix.android.sdk.api.session.space
 
-import org.matrix.android.sdk.api.session.events.model.Event
 import org.matrix.android.sdk.api.session.room.model.RoomSummary
 import org.matrix.android.sdk.api.session.room.model.SpaceChildInfo
+import org.matrix.android.sdk.api.session.space.model.SpaceChildSummaryEvent
 
 data class SpaceHierarchyData(
         val rootSummary: RoomSummary,
         val children: List<SpaceChildInfo>,
-        val childrenState: List<Event>,
+        val childrenState: List<SpaceChildSummaryEvent>,
         val nextToken: String? = null
 )

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/space/SpaceService.kt

@@ -18,10 +18,10 @@ package org.matrix.android.sdk.api.session.space
 
 import android.net.Uri
 import androidx.lifecycle.LiveData
-import org.matrix.android.sdk.api.session.events.model.Event
 import org.matrix.android.sdk.api.session.room.RoomSortOrder
 import org.matrix.android.sdk.api.session.room.RoomSummaryQueryParams
 import org.matrix.android.sdk.api.session.room.model.RoomSummary
+import org.matrix.android.sdk.api.session.space.model.SpaceChildSummaryEvent
 import org.matrix.android.sdk.api.session.space.peeking.SpacePeekResult
 
 typealias SpaceSummaryQueryParams = RoomSummaryQueryParams
@@ -75,7 +75,7 @@ interface SpaceService {
             suggestedOnly: Boolean? = null,
             limit: Int? = null,
             from: String? = null,
-            knownStateList: List<Event>? = null
+            knownStateList: List<SpaceChildSummaryEvent>? = null
     ): SpaceHierarchyData
 
     /**

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/space/model/SpaceChildSummaryEvent.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2022 The Matrix.org Foundation C.I.C.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.matrix.android.sdk.api.session.space.model
+
+import com.squareup.moshi.Json
+import com.squareup.moshi.JsonClass
+import org.matrix.android.sdk.api.session.events.model.Content
+
+@JsonClass(generateAdapter = true)
+data class SpaceChildSummaryEvent(
+        @Json(name = "type") val type: String? = null,
+        @Json(name = "state_key") val stateKey: String? = null,
+        @Json(name = "content") val content: Content? = null,
+        @Json(name = "sender") val senderId: String? = null,
+        @Json(name = "origin_server_ts") val originServerTs: Long? = null,
+)

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/space/DefaultSpaceService.kt

@@ -21,7 +21,6 @@ import androidx.lifecycle.LiveData
 import kotlinx.coroutines.withContext
 import org.matrix.android.sdk.api.MatrixCoroutineDispatchers
 import org.matrix.android.sdk.api.query.QueryStringValue
-import org.matrix.android.sdk.api.session.events.model.Event
 import org.matrix.android.sdk.api.session.events.model.EventType
 import org.matrix.android.sdk.api.session.events.model.toContent
 import org.matrix.android.sdk.api.session.events.model.toModel
@@ -45,6 +44,7 @@ import org.matrix.android.sdk.api.session.space.SpaceHierarchyData
 import org.matrix.android.sdk.api.session.space.SpaceService
 import org.matrix.android.sdk.api.session.space.SpaceSummaryQueryParams
 import org.matrix.android.sdk.api.session.space.model.SpaceChildContent
+import org.matrix.android.sdk.api.session.space.model.SpaceChildSummaryEvent
 import org.matrix.android.sdk.api.session.space.model.SpaceParentContent
 import org.matrix.android.sdk.api.session.space.peeking.SpacePeekResult
 import org.matrix.android.sdk.internal.di.UserId
@@ -128,7 +128,7 @@ internal class DefaultSpaceService @Inject constructor(
             suggestedOnly: Boolean?,
             limit: Int?,
             from: String?,
-            knownStateList: List<Event>?
+            knownStateList: List<SpaceChildSummaryEvent>?
     ): SpaceHierarchyData {
         val spacesResponse = getSpacesResponse(spaceId, suggestedOnly, limit, from)
         val spaceRootResponse = spacesResponse.getRoot(spaceId)
@@ -180,7 +180,7 @@ internal class DefaultSpaceService @Inject constructor(
     private fun List<SpaceChildSummaryResponse>?.mapSpaceChildren(
             spaceId: String,
             spaceRootResponse: SpaceChildSummaryResponse?,
-            knownStateList: List<Event>?,
+            knownStateList: List<SpaceChildSummaryEvent>?,
     ) = this?.filterIdIsNot(spaceId)
             ?.toSpaceChildInfoList(spaceId, spaceRootResponse, knownStateList)
             .orEmpty()
@@ -190,7 +190,7 @@ internal class DefaultSpaceService @Inject constructor(
     private fun List<SpaceChildSummaryResponse>.toSpaceChildInfoList(
             spaceId: String,
             rootRoomResponse: SpaceChildSummaryResponse?,
-            knownStateList: List<Event>?,
+            knownStateList: List<SpaceChildSummaryEvent>?,
     ) = flatMap { spaceChildSummary ->
         (rootRoomResponse?.childrenState ?: knownStateList)
                 ?.filter { it.isChildOf(spaceChildSummary) }
@@ -198,9 +198,9 @@ internal class DefaultSpaceService @Inject constructor(
                 .orEmpty()
     }
 
-    private fun Event.isChildOf(space: SpaceChildSummaryResponse) = stateKey == space.roomId && type == EventType.STATE_SPACE_CHILD
+    private fun SpaceChildSummaryEvent.isChildOf(space: SpaceChildSummaryResponse) = stateKey == space.roomId && type == EventType.STATE_SPACE_CHILD
 
-    private fun Event.toSpaceChildInfo(spaceId: String, summary: SpaceChildSummaryResponse) = content.toModel<SpaceChildContent>()?.let { content ->
+    private fun SpaceChildSummaryEvent.toSpaceChildInfo(spaceId: String, summary: SpaceChildSummaryResponse) = content.toModel<SpaceChildContent>()?.let { content ->
         createSpaceChildInfo(spaceId, summary, content)
     }
 

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/space/SpaceChildSummaryResponse.kt

@@ -18,7 +18,7 @@ package org.matrix.android.sdk.internal.session.space
 
 import com.squareup.moshi.Json
 import com.squareup.moshi.JsonClass
-import org.matrix.android.sdk.api.session.events.model.Event
+import org.matrix.android.sdk.api.session.space.model.SpaceChildSummaryEvent
 
 /**
  * The fields are the same as those returned by /publicRooms (see spec), with the addition of:
@@ -36,10 +36,11 @@ internal data class SpaceChildSummaryResponse(
          */
         @Json(name = "room_type") val roomType: String? = null,
 
-        /**  The m.space.child events of the room. For each event, only the following fields are included:
+        /**
-         *  type, state_key, content, room_id, sender, with the addition of origin_server_ts.
+         * The m.space.child events of the room. For each event, only the following fields are included:
+         * type, state_key, content, sender, and of origin_server_ts.
          */
-        @Json(name = "children_state") val childrenState: List<Event>? = null,
+        @Json(name = "children_state") val childrenState: List<SpaceChildSummaryEvent>? = null,
 
         /**
          * Aliases of the room. May be empty.