refactor: remove epoch from local db

app/src/main/kotlin/com/wire/android/di/CoreLogicModule.kt

@@ -35,6 +35,7 @@ import com.wire.kalium.logic.feature.auth.LogoutUseCase
 import com.wire.kalium.logic.feature.auth.sso.ValidateSSOCodeUseCase
 import com.wire.kalium.logic.feature.connection.BlockUserUseCase
 import com.wire.kalium.logic.feature.connection.UnblockUserUseCase
+import com.wire.kalium.logic.feature.conversation.GetConversationEpochUseCase
 import com.wire.kalium.logic.feature.conversation.ObserveOtherUserSecurityClassificationLabelUseCase
 import com.wire.kalium.logic.feature.conversation.ObserveSecurityClassificationLabelUseCase
 import com.wire.kalium.logic.feature.e2ei.usecase.FetchConversationMLSVerificationStatusUseCase
@@ -489,4 +490,11 @@ class UseCaseModule {
         @KaliumCoreLogic coreLogic: CoreLogic,
         @CurrentAccount currentAccount: UserId
     ) = coreLogic.getSessionScope(currentAccount).getTeamUrlUseCase
+
+    @ViewModelScoped
+    @Provides
+    fun provideGetConversationEpochUseCase(
+        @KaliumCoreLogic coreLogic: CoreLogic,
+        @CurrentAccount currentAccount: UserId
+    ): GetConversationEpochUseCase = coreLogic.getSessionScope(currentAccount).getConversationEpochUseCase
 }

app/src/main/kotlin/com/wire/android/ui/debug/conversation/DebugConversationScreen.kt

@@ -93,7 +93,7 @@ fun DebugConversationScreen(
 
                 state.mlsProtocolInfo?.let {
                     SectionHeader("MLS")
-                    MlsDetailsView(it)
+                    MlsDetailsView(it, state.epoch)
                 }
 
                 SectionHeader("Actions")
@@ -205,7 +205,7 @@ private fun ConversationDetailsView(state: DebugConversationViewState) {
 }
 
 @Composable
-private fun MlsDetailsView(mlsProtocolInfo: Conversation.ProtocolInfo.MLS) {
+private fun MlsDetailsView(mlsProtocolInfo: Conversation.ProtocolInfo.MLS, epoch: ULong?) {
 
     val clipboard = LocalClipboardManager.current
 
@@ -228,7 +228,7 @@ private fun MlsDetailsView(mlsProtocolInfo: Conversation.ProtocolInfo.MLS) {
     )
     SettingsItem(
         title = "Epoch",
-        text = mlsProtocolInfo.epoch.toString(),
+        text = epoch.toString(),
     )
 }
 

app/src/main/kotlin/com/wire/android/ui/debug/conversation/DebugConversationViewModel.kt

@@ -27,6 +27,7 @@
 import com.wire.kalium.logic.data.conversation.Conversation
 import com.wire.kalium.logic.data.conversation.FetchConversationUseCase
 import com.wire.kalium.logic.data.conversation.ResetMLSConversationUseCase
+import com.wire.kalium.logic.feature.conversation.GetConversationEpochUseCase
 import com.wire.kalium.logic.feature.conversation.ObserveConversationDetailsUseCase
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -40,6 +41,7 @@
     private val conversationDetails: ObserveConversationDetailsUseCase,
     private val resetMLSConversation: ResetMLSConversationUseCase,
     private val fetchConversation: FetchConversationUseCase,
+    private val getConversationEpoch: GetConversationEpochUseCase,
     savedStateHandle: SavedStateHandle,
 ) : ActionsViewModel<DebugConversationScreenAction>() {
 
@@ -66,6 +68,19 @@
                             mlsProtocolInfo = result.conversationDetails.conversation.protocol as? Conversation.ProtocolInfo.MLS,
                         )
                     }
+
+                    // Call conversation epoch with the group id on every emit
+                    (result.conversationDetails.conversation.protocol as? Conversation.ProtocolInfo.MLS)?.groupId?.let { groupId ->
+                        when (val epochResult = getConversationEpoch(groupId)) {
+                            is GetConversationEpochUseCase.Result.Success -> {
+                                _state.update { it.copy(epoch = epochResult.epoch) }
+                            }
+
+                            is GetConversationEpochUseCase.Result.Failure -> {
+                                appLogger.e("Failed to get conversation epoch: ${epochResult.coreFailure}")
+                            }
+                        }
+                    }
                 }
             }
     }
@@ -99,4 +114,5 @@
     val conversationName: String? = null,
     val teamId: String? = null,
     val mlsProtocolInfo: Conversation.ProtocolInfo.MLS? = null,
+    val epoch: ULong? = null,
 )

app/src/main/kotlin/com/wire/android/ui/home/conversations/details/options/GroupConversationOptions.kt

@@ -436,7 +436,6 @@ private val StateAdmin = StateMember.copy(
 private val ProtocolInfoMLS = Conversation.ProtocolInfo.MLS(
     groupId = GroupID("groupId"),
     groupState = Conversation.ProtocolInfo.MLSCapable.GroupState.ESTABLISHED,
-    epoch = ULong.MIN_VALUE,
     keyingMaterialLastUpdate = Instant.fromEpochMilliseconds(1648654560000),
     cipherSuite = CipherSuite.MLS_128_DHKEMX25519_AES128GCM_SHA256_Ed25519
 )

app/src/test/kotlin/com/wire/android/framework/TestConversation.kt

@@ -162,7 +162,6 @@ object TestConversation {
     val MLS_PROTOCOL_INFO = ProtocolInfo.MLS(
         GROUP_ID,
         ProtocolInfo.MLSCapable.GroupState.PENDING_JOIN,
-        0UL,
         Instant.parse("2021-03-30T15:36:00.000Z"),
         cipherSuite = CipherSuite.MLS_128_DHKEMX25519_AES128GCM_SHA256_Ed25519
     )

app/src/test/kotlin/com/wire/android/ui/home/conversations/search/SearchUserViewModelTest.kt

@@ -449,7 +449,6 @@ class SearchUserViewModelTest {
         val mlsProtocol = Conversation.ProtocolInfo.MLS(
             GroupID("s"),
             Conversation.ProtocolInfo.MLSCapable.GroupState.PENDING_CREATION,
-            0UL,
             Instant.parse("2021-03-30T15:36:00.000Z"),
             cipherSuite = CipherSuite.MLS_128_DHKEMX25519_AES128GCM_SHA256_Ed25519
         )