Add API access for data in the LocalChangeEntity table

engine/src/main/java/com/google/android/fhir/FhirEngine.kt

@@ -174,6 +174,8 @@ interface FhirEngine {
    */
   suspend fun getLocalChanges(type: ResourceType, id: String): List<LocalChange>
 
+  suspend fun getUnsyncedLocalChanges(): List<LocalChange>
+
   /**
    * Purges a resource from the database without deleting data from the server.
    *

engine/src/main/java/com/google/android/fhir/impl/FhirEngineImpl.kt

@@ -73,6 +73,8 @@ internal class FhirEngineImpl(private val database: Database, private val contex
   override suspend fun getLocalChanges(type: ResourceType, id: String) =
     withContext(Dispatchers.IO) { database.getLocalChanges(type, id) }
 
+  override suspend fun getUnsyncedLocalChanges(): List<LocalChange> = database.getAllLocalChanges()
+
   override suspend fun purge(type: ResourceType, id: String, forcePurge: Boolean) =
     withContext(Dispatchers.IO) { database.purge(type, setOf(id), forcePurge) }
 

engine/src/main/java/com/google/android/fhir/testing/Utilities.kt

@@ -199,6 +199,8 @@ internal object TestFhirEngineImpl : FhirEngine {
     )
   }
 
+  override suspend fun getUnsyncedLocalChanges(): List<LocalChange> = listOf()
+
   override suspend fun purge(type: ResourceType, id: String, forcePurge: Boolean) {}
 
   override suspend fun purge(type: ResourceType, ids: Set<String>, forcePurge: Boolean) {}