Add internal tool to reset sender key state.

app/src/main/java/org/thoughtcrime/securesms/components/settings/conversation/InternalConversationSettingsFragment.kt

@@ -14,6 +14,7 @@ import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.update
 import org.signal.core.util.concurrent.SignalExecutors
 import org.signal.core.util.isAbsent
+import org.signal.core.util.logging.Log
 import org.signal.core.util.orNull
 import org.signal.core.util.roundedString
 import org.signal.core.util.withinTransaction
@@ -47,6 +48,10 @@ import kotlin.time.DurationUnit
 @Stable
 class InternalConversationSettingsFragment : ComposeFragment(), InternalConversationSettingsScreenCallbacks {
 
+  companion object {
+    val TAG = Log.tag(InternalConversationSettingsFragment::class.java)
+  }
+
   private val viewModel: InternalViewModel by viewModels(
     factoryProducer = {
       val recipientId = InternalConversationSettingsFragmentArgs.fromBundle(requireArguments()).recipientId
@@ -250,6 +255,21 @@ class InternalConversationSettingsFragment : ComposeFragment(), InternalConversa
     Toast.makeText(context, "Done! Split the ACI and profile key off into $aciRecipientId", Toast.LENGTH_SHORT).show()
   }
 
+  override fun clearSenderKey(recipientId: RecipientId) {
+    val group = SignalDatabase.groups.getGroup(recipientId).orNull()
+    if (group == null) {
+      Log.w(TAG, "Couldn't find group for recipientId: $recipientId")
+      return
+    }
+
+    if (group.distributionId == null) {
+      Log.w(TAG, "No distributionId for recipientId: $recipientId")
+      return
+    }
+
+    SignalDatabase.senderKeyShared.deleteAllFor(group.distributionId)
+  }
+
   class InternalViewModel(
     val recipientId: RecipientId
   ) : ViewModel(), RecipientForeverObserver {

app/src/main/java/org/thoughtcrime/securesms/components/settings/conversation/InternalConversationSettingsScreen.kt

@@ -33,6 +33,7 @@ import org.thoughtcrime.securesms.recipients.RecipientId
 private enum class Dialog {
   NONE,
   DISABLE_PROFILE_SHARING,
+  CLEAR_SENDER_KEY,
   DELETE_SESSIONS,
   ARCHIVE_SESSIONS,
   DELETE_AVATAR,
@@ -193,11 +194,21 @@ fun InternalConversationSettingsScreen(
         )
       }
 
-      if (!state.isGroup) {
+      item {
-        item {
+        Texts.SectionHeader(text = "Actions")
-          Texts.SectionHeader(text = "Actions")
+      }
-        }
 
+      if (state.isGroup) {
+        item {
+          Rows.TextRow(
+            text = "Clear sender key",
+            label = "Resets any sender key state, meaning the next message will require re-distributing sender key material.",
+            onClick = {
+              dialog = Dialog.CLEAR_SENDER_KEY
+            }
+          )
+        }
+      } else {
         item {
           Rows.TextRow(
             text = "Disable Profile Sharing",
@@ -362,6 +373,9 @@ private fun rememberOnConfirm(
       Dialog.SPLIT_WITHOUT_CREATING_THREADS -> {
         { callbacks.splitWithoutCreatingThreads(state.recipientId) }
       }
+      Dialog.CLEAR_SENDER_KEY -> {
+        { callbacks.clearSenderKey(state.recipientId) }
+      }
     }
   }
 }
@@ -459,6 +473,7 @@ interface InternalConversationSettingsScreenCallbacks {
   fun add10Messages(recipientId: RecipientId) = Unit
   fun splitAndCreateThreads(recipientId: RecipientId) = Unit
   fun splitWithoutCreatingThreads(recipientId: RecipientId) = Unit
+  fun clearSenderKey(recipientId: RecipientId) = Unit
 
   object Empty : InternalConversationSettingsScreenCallbacks
 }