Secure backup

libraries/indicator/impl/src/main/kotlin/io/element/android/libraries/indicator/impl/DefaultIndicatorService.kt

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2023 New Vector Ltd
+ *
+ * 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 io.element.android.libraries.indicator.impl
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.State
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import com.squareup.anvil.annotations.ContributesBinding
+import io.element.android.libraries.di.SessionScope
+import io.element.android.libraries.indicator.api.IndicatorService
+import io.element.android.libraries.matrix.api.encryption.BackupState
+import io.element.android.libraries.matrix.api.encryption.EncryptionService
+import io.element.android.libraries.matrix.api.encryption.RecoveryState
+import io.element.android.libraries.matrix.api.verification.SessionVerificationService
+import javax.inject.Inject
+
+@ContributesBinding(SessionScope::class)
+class DefaultIndicatorService @Inject constructor(
+    private val sessionVerificationService: SessionVerificationService,
+    private val encryptionService: EncryptionService,
+) : IndicatorService {
+
+    @Composable
+    override fun showRoomListTopBarIndicator(): State<Boolean> {
+        val canVerifySession by sessionVerificationService.canVerifySessionFlow.collectAsState(initial = false)
+        val settingChatBackupIndicator = showSettingChatBackupIndicator()
+
+        return remember {
+            derivedStateOf {
+                !canVerifySession && settingChatBackupIndicator.value
+            }
+        }
+    }
+
+    @Composable
+    override fun showSettingChatBackupIndicator(): State<Boolean> {
+        val backupState by encryptionService.backupStateStateFlow.collectAsState()
+        val recoveryState by encryptionService.recoveryStateStateFlow.collectAsState()
+
+        return remember {
+            derivedStateOf {
+                val showForBackup = backupState in listOf(
+                    BackupState.UNKNOWN,
+                )
+                val showForRecovery = recoveryState in listOf(
+                    RecoveryState.DISABLED,
+                    RecoveryState.INCOMPLETE,
+                )
+                showForBackup || showForRecovery
+            }
+        }
+    }
+}