fix: Change return type of getConversationByGroupID to nullable for epoch changes (#2593)

* Commit with unresolved merge conflicts outside of

* empty trigger commit

* chore: fix merge conflicts

---------

Co-authored-by: Alexandre Ferris <[email protected]>

Author: github-actions[bot]

persistence/src/commonMain/kotlin/com/wire/kalium/persistence/dao/conversation/ConversationDAO.kt

@@ -106,7 +106,7 @@ interface ConversationDAO {
     suspend fun getConversationsWithoutMetadata(): List<QualifiedIDEntity>
     suspend fun clearContent(conversationId: QualifiedIDEntity)
     suspend fun updateMlsVerificationStatus(verificationStatus: ConversationEntity.VerificationStatus, conversationId: QualifiedIDEntity)
-    suspend fun getConversationByGroupID(groupID: String): ConversationViewEntity
+    suspend fun getConversationByGroupID(groupID: String): ConversationViewEntity?
     suspend fun observeUnreadArchivedConversationsCount(): Flow<Long>
     suspend fun observeDegradedConversationNotified(conversationId: QualifiedIDEntity): Flow<Boolean>
     suspend fun updateDegradedConversationNotifiedFlag(conversationId: QualifiedIDEntity, updateFlag: Boolean)

persistence/src/commonMain/kotlin/com/wire/kalium/persistence/dao/conversation/ConversationDAOImpl.kt

@@ -247,10 +247,10 @@ internal class ConversationDAOImpl internal constructor(
             .map { it?.let { conversationMapper.toModel(it) } }
     }
 
-    override suspend fun getConversationByGroupID(groupID: String): ConversationViewEntity {
+    override suspend fun getConversationByGroupID(groupID: String): ConversationViewEntity? {
         return conversationQueries.selectByGroupId(groupID)
-            .executeAsOne()
-            .let { it.let { conversationMapper.toModel(it) } }
+            .executeAsOneOrNull()
+            ?.let { it.let { conversationMapper.toModel(it) } }
     }
 
     override suspend fun getConversationIdByGroupID(groupID: String) = withContext(coroutineContext) {

persistence/src/commonTest/kotlin/com/wire/kalium/persistence/dao/ConversationDAOTest.kt

@@ -1826,6 +1826,22 @@ class ConversationDAOTest : BaseDatabaseTest() {
         }
     }
 
+    @Test
+    fun givenInsertedConversations_whenGettingConversationByInexistingGroupId_thenReturnNull() = runTest {
+        // given
+        val expected = null
+        conversationDAO.insertConversation(conversationEntity4)
+
+        // when
+        val result = conversationDAO.getConversationByGroupID("call_subconversation_groupid")
+
+        // then
+        assertEquals(
+            expected,
+            result
+        )
+    }
+
     private fun ConversationEntity.toViewEntity(userEntity: UserEntity? = null): ConversationViewEntity {
         val protocol: ConversationEntity.Protocol
         val mlsGroupId: String?