fix(conversation): disable addMember on a one-on-one conversation with deleted account (WPB-10259)

app/src/main/kotlin/com/wire/android/ui/common/bottomsheet/conversation/ConversationSheetContent.kt

@@ -152,4 +152,6 @@ data class ConversationSheetContent(
     fun canAddToFavourite(): Boolean =
         (conversationTypeDetail is ConversationTypeDetail.Private && conversationTypeDetail.blockingState != BlockingState.BLOCKED)
                 || conversationTypeDetail is ConversationTypeDetail.Group
+
+    fun isAbandonedOneOnOneConversation(participantsCount: Int): Boolean = title.isEmpty() && participantsCount == 1
 }

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

@@ -18,6 +18,7 @@
 
 package com.wire.android.ui.home.conversations.details
 
+import SwipeableSnackbar
 import androidx.annotation.StringRes
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.LocalOverscrollConfiguration
@@ -34,6 +35,7 @@ import androidx.compose.foundation.pager.rememberPagerState
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
@@ -111,8 +113,6 @@ import com.wire.android.ui.theme.wireTypography
 import com.wire.android.util.ui.UIText
 import com.wire.kalium.logic.data.conversation.Conversation
 import kotlinx.coroutines.launch
-import SwipeableSnackbar
-import androidx.compose.material3.SnackbarHost
 
 @RootNavGraph
 @WireDestination(
@@ -394,7 +394,11 @@ private fun GroupConversationDetailsContent(
                         openFullListPressed = openFullListPressed,
                         onAddParticipantsPressed = onAddParticipantsPressed,
                         onProfilePressed = onProfilePressed,
-                        lazyListState = lazyListStates[pageIndex]
+                        lazyListState = lazyListStates[pageIndex],
+                        isAbandonedOneOnOneConversation = conversationSheetState.conversationSheetContent?.isAbandonedOneOnOneConversation(
+                            groupParticipantsState.data.allCount
+                        ) ?: false
+
                     )
                 }
             }

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

@@ -99,7 +99,7 @@ fun GroupConversationDetailsTopBarCollapsing(
                     Text(
                         text = title.ifBlank {
                             if (isLoading) ""
-                            else UIText.StringResource(R.string.group_unavailable_label).asString()
+                            else UIText.StringResource(R.string.member_name_deleted_label).asString()
                         },
                         overflow = TextOverflow.Ellipsis,
                         maxLines = 1,

app/src/main/kotlin/com/wire/android/ui/home/conversations/details/participants/GroupConversationParticipants.kt

@@ -61,7 +61,8 @@ fun GroupConversationParticipants(
     onProfilePressed: (UIParticipant) -> Unit,
     onAddParticipantsPressed: () -> Unit,
     groupParticipantsState: GroupConversationParticipantsState,
-    lazyListState: LazyListState = rememberLazyListState()
+    lazyListState: LazyListState = rememberLazyListState(),
+    isAbandonedOneOnOneConversation: Boolean = false
 ) {
     val context = LocalContext.current
     Column {
@@ -86,7 +87,7 @@ fun GroupConversationParticipants(
                             groupParticipantsState.data.allCount.toString()
                         )
                     )
-                    if (groupParticipantsState.data.isSelfAnAdmin) {
+                    if (groupParticipantsState.data.isSelfAnAdmin && !isAbandonedOneOnOneConversation) {
                         WirePrimaryButton(
                             text = stringResource(R.string.conversation_details_group_participants_add),
                             fillMaxWidth = true,

app/src/test/kotlin/com/wire/android/ui/common/bottomsheet/conversation/ConversationSheetContentTest.kt

@@ -0,0 +1,91 @@
+/*
+ * Wire
+ * Copyright (C) 2024 Wire Swiss GmbH
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see http://www.gnu.org/licenses/.
+ */
+package com.wire.android.ui.common.bottomsheet.conversation
+
+import com.wire.android.ui.home.conversations.details.GroupConversationDetailsViewModelTest.Companion.testGroup
+import com.wire.kalium.logic.data.conversation.Conversation
+import com.wire.kalium.logic.data.id.TeamId
+import kotlinx.coroutines.test.runTest
+import org.amshove.kluent.internal.assertEquals
+import org.junit.jupiter.api.Test
+
+class ConversationSheetContentTest {
+
+    @Test
+    fun givenTitleIsEmptyAndTheGroupSizeIsOne_whenCallingIsTheGroupAbandoned_returnsTrue() = runTest {
+        val details = testGroup.copy(conversation = testGroup.conversation.copy(teamId = TeamId("team_id")))
+
+        val givenConversationSheetContent = ConversationSheetContent(
+            title = "",
+            conversationId = details.conversation.id,
+            mutingConversationState = details.conversation.mutedStatus,
+            conversationTypeDetail = ConversationTypeDetail.Group(details.conversation.id, details.isSelfUserCreator),
+            selfRole = Conversation.Member.Role.Member,
+            isTeamConversation = details.conversation.isTeamGroup(),
+            isArchived = false,
+            protocol = Conversation.ProtocolInfo.Proteus,
+            mlsVerificationStatus = Conversation.VerificationStatus.NOT_VERIFIED,
+            proteusVerificationStatus = Conversation.VerificationStatus.NOT_VERIFIED
+        )
+        val givenParticipantsCount = 1
+
+        assertEquals(true, givenConversationSheetContent.isAbandonedOneOnOneConversation(givenParticipantsCount))
+    }
+
+    @Test
+    fun givenTitleIsEmptyAndTheGroupSizeIsGtOne_whenCallingIsTheGroupAbandoned_returnsFalse() = runTest {
+        val details = testGroup.copy(conversation = testGroup.conversation.copy(teamId = TeamId("team_id")))
+
+        val givenConversationSheetContent = ConversationSheetContent(
+            title = "",
+            conversationId = details.conversation.id,
+            mutingConversationState = details.conversation.mutedStatus,
+            conversationTypeDetail = ConversationTypeDetail.Group(details.conversation.id, details.isSelfUserCreator),
+            selfRole = Conversation.Member.Role.Member,
+            isTeamConversation = details.conversation.isTeamGroup(),
+            isArchived = false,
+            protocol = Conversation.ProtocolInfo.Proteus,
+            mlsVerificationStatus = Conversation.VerificationStatus.NOT_VERIFIED,
+            proteusVerificationStatus = Conversation.VerificationStatus.NOT_VERIFIED
+        )
+        val givenParticipantsCount = 3
+
+        assertEquals(false, givenConversationSheetContent.isAbandonedOneOnOneConversation(givenParticipantsCount))
+    }
+
+    @Test
+    fun givenTitleIsNotEmptyAndTheGroupSizeIsOne_whenCallingIsTheGroupAbandoned_returnsFalse() = runTest {
+        val details = testGroup.copy(conversation = testGroup.conversation.copy(teamId = TeamId("team_id")))
+
+        val givenConversationSheetContent = ConversationSheetContent(
+            title = "notEmpty",
+            conversationId = details.conversation.id,
+            mutingConversationState = details.conversation.mutedStatus,
+            conversationTypeDetail = ConversationTypeDetail.Group(details.conversation.id, details.isSelfUserCreator),
+            selfRole = Conversation.Member.Role.Member,
+            isTeamConversation = details.conversation.isTeamGroup(),
+            isArchived = false,
+            protocol = Conversation.ProtocolInfo.Proteus,
+            mlsVerificationStatus = Conversation.VerificationStatus.NOT_VERIFIED,
+            proteusVerificationStatus = Conversation.VerificationStatus.NOT_VERIFIED
+        )
+        val givenParticipantsCount = 3
+
+        assertEquals(false, givenConversationSheetContent.isAbandonedOneOnOneConversation(givenParticipantsCount))
+    }
+}