Fix/conversation deletion issues (#1695)

* SES-2464 - properly heading to home root when deleting a thread

* SES-2810 - Catering for missing config contacts vs local contacts

Making sure we deleted conversations when a contact is missing from the config while existing locally

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/ConversationActivityV2.kt

@@ -57,7 +57,6 @@ import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.channels.BufferOverflow
 import kotlinx.coroutines.channels.Channel
-import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.flow.receiveAsFlow
 import kotlinx.coroutines.launch
@@ -109,14 +108,14 @@ import org.thoughtcrime.securesms.components.emoji.RecentEmojiPageModel
 import org.thoughtcrime.securesms.contacts.SelectContactsActivity.Companion.selectedContactsKey
 import org.thoughtcrime.securesms.conversation.ConversationActionBarDelegate
 import org.thoughtcrime.securesms.conversation.disappearingmessages.DisappearingMessagesActivity
-import org.thoughtcrime.securesms.conversation.v2.ConversationViewModel.Commands.*
 import org.thoughtcrime.securesms.conversation.v2.ConversationReactionOverlay.OnActionSelectedListener
 import org.thoughtcrime.securesms.conversation.v2.ConversationReactionOverlay.OnReactionSelectedListener
+import org.thoughtcrime.securesms.conversation.v2.ConversationViewModel.Commands.*
 import org.thoughtcrime.securesms.conversation.v2.MessageDetailActivity.Companion.MESSAGE_TIMESTAMP
+import org.thoughtcrime.securesms.conversation.v2.MessageDetailActivity.Companion.ON_COPY
 import org.thoughtcrime.securesms.conversation.v2.MessageDetailActivity.Companion.ON_DELETE
 import org.thoughtcrime.securesms.conversation.v2.MessageDetailActivity.Companion.ON_REPLY
 import org.thoughtcrime.securesms.conversation.v2.MessageDetailActivity.Companion.ON_RESEND
-import org.thoughtcrime.securesms.conversation.v2.MessageDetailActivity.Companion.ON_COPY
 import org.thoughtcrime.securesms.conversation.v2.MessageDetailActivity.Companion.ON_SAVE
 import org.thoughtcrime.securesms.conversation.v2.dialogs.BlockedDialog
 import org.thoughtcrime.securesms.conversation.v2.dialogs.LinkPreviewDialog
@@ -157,6 +156,8 @@ import org.thoughtcrime.securesms.database.model.MmsMessageRecord
 import org.thoughtcrime.securesms.database.model.ReactionRecord
 import org.thoughtcrime.securesms.giph.ui.GiphyActivity
 import org.thoughtcrime.securesms.groups.OpenGroupManager
+import org.thoughtcrime.securesms.home.HomeActivity
+import org.thoughtcrime.securesms.home.startHomeActivity
 import org.thoughtcrime.securesms.linkpreview.LinkPreviewRepository
 import org.thoughtcrime.securesms.linkpreview.LinkPreviewUtil
 import org.thoughtcrime.securesms.linkpreview.LinkPreviewViewModel
@@ -850,8 +851,8 @@ class ConversationActivityV2 : PassphraseRequiredActionBarActivity(), InputBarDe
                     binding.messageRequestBar.visibility = View.GONE
                 }
                 if (!uiState.conversationExists && !isFinishing) {
-                    // Conversation should be deleted now, just go back
-                    finish()
+                    // Conversation should be deleted now, go to homepage with a cleared stack
+                    baseContext.startHomeActivity(isFromOnboarding = false, isNewAccount = false)
                 }
 
                 // show or hide the text input

app/src/main/java/org/thoughtcrime/securesms/database/Storage.kt

@@ -1265,6 +1265,16 @@ open class Storage(
             }
             setRecipientHash(recipient, contact.hashCode().toString())
         }
+
+        // if we have contacts locally but that are missing from the config, remove their corresponding thread
+        val  removedContacts = getAllContacts().filter { localContact ->
+            moreContacts.firstOrNull {
+                it.id == localContact.accountID
+            } == null
+        }
+        removedContacts.forEach {
+            getThreadId(fromSerialized(it.accountID))?.let(::deleteConversation)
+        }
     }
 
     override fun addContacts(contacts: List<ConfigurationMessage.Contact>) {