Admin Delete

Co-authored-by: Jamie <113370520+jamiebuilds-signal@users.noreply.github.com>

protos/Backups.proto

@@ -137,6 +137,7 @@ message AccountData {
     CallsUseLessDataSetting callsUseLessDataSetting = 29;  // If unset, treat the same as "Unknown" case
     bool allowSealedSenderFromAnyone = 30;
     bool allowAutomaticKeyVerification = 31;
+    bool hasSeenAdminDeleteEducationDialog = 32;
   }
 
   message SubscriberData {
@@ -504,6 +505,7 @@ message ChatItem {
     ViewOnceMessage viewOnceMessage = 18;
     DirectStoryReplyMessage directStoryReplyMessage = 19; // group story reply messages are not backed up
     Poll poll = 20;
+    AdminDeletedMessage adminDeletedMessage = 22;
   }
 
   PinDetails pinDetails = 21; // only set if message is pinned
@@ -904,6 +906,10 @@ message Poll {
   repeated Reaction reactions = 5;
 }
 
+message AdminDeletedMessage {
+  uint64 adminId = 1; // id of the admin that deleted the message
+}
+
 message ChatUpdateMessage {
   // If unset, importers should ignore the update message without throwing an error.
   oneof update {

protos/SignalService.proto

@@ -404,6 +404,11 @@ message DataMessage {
     optional uint64 targetSentTimestamp = 2;
   }
 
+  message AdminDelete {
+    optional bytes targetAuthorAciBinary = 1; // 16-byte UUID
+    optional uint64 targetSentTimestamp = 2;
+  }
+
   optional string body = 1;
   repeated AttachmentPointer attachments = 2;
   reserved /*groupV1*/ 3;
@@ -431,7 +436,8 @@ message DataMessage {
   optional PollVote pollVote = 26;
   optional PinMessage pinMessage = 27;
   optional UnpinMessage unpinMessage = 28;
-  // NEXT ID: 29
+  optional AdminDelete adminDelete = 29;
+  // NEXT ID: 30
 }
 
 message NullMessage {

protos/SignalStorage.proto

@@ -302,6 +302,7 @@ message AccountRecord {
   NotificationProfileManualOverride notificationProfileManualOverride = 44;
   bool notificationProfileSyncDisabled = 45;
   bool automaticKeyVerificationDisabled = 46;
+  bool hasSeenAdminDeleteEducationDialog = 47;
 }
 
 message StoryDistributionListRecord {