Add MatrixClient.getDatabaseSizes

This returns a `SdkStoreSizes` object, with the possible SDK database sizes.

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/MatrixClient.kt

@@ -9,6 +9,7 @@
 package io.element.android.libraries.matrix.api
 
 import io.element.android.libraries.core.data.tryOrNull
+import io.element.android.libraries.matrix.api.analytics.SdkStoreSizes
 import io.element.android.libraries.matrix.api.core.DeviceId
 import io.element.android.libraries.matrix.api.core.EventId
 import io.element.android.libraries.matrix.api.core.MatrixPatterns
@@ -81,6 +82,7 @@ interface MatrixClient {
     suspend fun joinRoomByIdOrAlias(roomIdOrAlias: RoomIdOrAlias, serverNames: List<String>): Result<RoomInfo?>
     suspend fun knockRoom(roomIdOrAlias: RoomIdOrAlias, message: String, serverNames: List<String>): Result<RoomInfo?>
     suspend fun getCacheSize(): Long
+    suspend fun getDatabaseSizes(): Result<SdkStoreSizes>
 
     /**
      * Will close the client and delete the cache data.

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/analytics/SdkStoreSizes.kt

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2025 Element Creations Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
+ * Please see LICENSE files in the repository root for full details.
+ */
+
+package io.element.android.libraries.matrix.api.analytics
+
+import io.element.android.libraries.core.data.ByteSize
+
+/**
+ * The sizes of the different stores (DBs) in the SDK.
+ */
+data class SdkStoreSizes(
+    val stateStore: ByteSize?,
+    val eventCacheStore: ByteSize?,
+    val mediaStore: ByteSize?,
+    val cryptoStore: ByteSize?,
+)

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/RustMatrixClient.kt

@@ -12,11 +12,13 @@ import io.element.android.libraries.androidutils.file.getSizeOfFiles
 import io.element.android.libraries.core.bool.orFalse
 import io.element.android.libraries.core.coroutine.CoroutineDispatchers
 import io.element.android.libraries.core.coroutine.childScope
+import io.element.android.libraries.core.data.bytes
 import io.element.android.libraries.core.data.tryOrNull
 import io.element.android.libraries.core.extensions.mapFailure
 import io.element.android.libraries.core.extensions.runCatchingExceptions
 import io.element.android.libraries.featureflag.api.FeatureFlagService
 import io.element.android.libraries.matrix.api.MatrixClient
+import io.element.android.libraries.matrix.api.analytics.SdkStoreSizes
 import io.element.android.libraries.matrix.api.core.DeviceId
 import io.element.android.libraries.matrix.api.core.EventId
 import io.element.android.libraries.matrix.api.core.RoomAlias
@@ -566,6 +568,17 @@ class RustMatrixClient(
         return getCacheSize(includeCryptoDb = false)
     }
 
+    override suspend fun getDatabaseSizes(): Result<SdkStoreSizes> = runCatchingExceptions {
+        innerClient.getStoreSizes().run {
+            SdkStoreSizes(
+                stateStore = stateStore?.bytes,
+                eventCacheStore = eventCacheStore?.bytes,
+                mediaStore = mediaStore?.bytes,
+                cryptoStore = cryptoStore?.bytes,
+            )
+        }
+    }
+
     override suspend fun clearCache() {
         innerClient.clearCaches(innerSyncService)
         destroy()

libraries/matrix/test/src/main/kotlin/io/element/android/libraries/matrix/test/FakeMatrixClient.kt

@@ -9,6 +9,7 @@
 package io.element.android.libraries.matrix.test
 
 import io.element.android.libraries.matrix.api.MatrixClient
+import io.element.android.libraries.matrix.api.analytics.SdkStoreSizes
 import io.element.android.libraries.matrix.api.core.DeviceId
 import io.element.android.libraries.matrix.api.core.EventId
 import io.element.android.libraries.matrix.api.core.RoomAlias
@@ -105,6 +106,7 @@ class FakeMatrixClient(
     private val addRecentEmojiLambda: (String) -> Result<Unit> = { Result.success(Unit) },
     private val markRoomAsFullyReadResult: (RoomId, EventId) -> Result<Unit> = { _, _ -> lambdaError() },
     private val performDatabaseVacuumLambda: () -> Result<Unit> = { lambdaError() },
+    private val getDatabaseSizesLambda: () -> Result<SdkStoreSizes> = { lambdaError() },
 ) : MatrixClient {
     var setDisplayNameCalled: Boolean = false
         private set
@@ -184,6 +186,10 @@ class FakeMatrixClient(
         return 0
     }
 
+    override suspend fun getDatabaseSizes(): Result<SdkStoreSizes> {
+        return getDatabaseSizesLambda()
+    }
+
     override suspend fun clearCache() = simulateLongTask {
         clearCacheLambda()
     }