Improve signout task

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/auth/SessionParamsStore.kt

@@ -25,5 +25,5 @@ internal interface SessionParamsStore {
 
     fun save(sessionParams: SessionParams): Try<SessionParams>
 
-    fun delete()
+    fun delete(): Try<Unit>
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/auth/db/RealmSessionParamsStore.kt

@@ -50,7 +50,8 @@ internal class RealmSessionParamsStore(private val mapper: SessionParamsMapper,
         return sessionParams
     }
 
-    override fun delete() {
+    override fun delete(): Try<Unit> {
+        return Try {
             val realm = Realm.getInstance(realmConfiguration)
             realm.executeTransaction {
                 it.where(SessionParamsEntity::class.java)
@@ -59,5 +60,6 @@ internal class RealmSessionParamsStore(private val mapper: SessionParamsMapper,
             }
             realm.close()
         }
+    }
 
 }

matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/signout/SignOutTask.kt

@@ -30,7 +30,7 @@ internal class DefaultSignOutTask(private val signOutAPI: SignOutAPI,
     override fun execute(params: Unit): Try<Unit> {
         return executeRequest<Unit> {
             apiCall = signOutAPI.signOut()
-        }.map {
+        }.flatMap {
             // TODO Clear DB, media cache, etc.
             sessionParamsStore.delete()
         }