Update friend request acceptance for multi device

Signal/src/ViewControllers/ConversationView/ConversationViewController.m

@@ -4430,8 +4430,27 @@ typedef enum : NSUInteger {
 {
     // Update the thread's friend request status
     [self.thread saveFriendRequestStatus:LKThreadFriendRequestStatusFriends withTransaction:nil];
-    // Send a friend request accepted message
-    [ThreadUtil enqueueFriendRequestAcceptanceMessageInThread:self.thread];
+    // Accept all outstanding friend requests associated with this user and try to establish sessions with the
+    // subset of their devices that haven't sent a friend request.
+    NSString *senderID = friendRequest.authorId;
+    NSMutableSet<TSContactThread *> *threads = [NSMutableSet new];
+    [OWSPrimaryStorage.sharedManager.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
+        NSString *masterHexEncodedPublicKey = [LKDatabaseUtilities getMasterHexEncodedPublicKeyFor:senderID in:transaction] ?: senderID;
+        NSSet<LKDeviceLink *> *deviceLinks = [LKDatabaseUtilities getDeviceLinksFor:masterHexEncodedPublicKey in:transaction];
+        for (LKDeviceLink *deviceLink in deviceLinks) {
+            [threads addObject:[TSContactThread getThreadWithContactId:deviceLink.master.hexEncodedPublicKey transaction:transaction]];
+            [threads addObject:[TSContactThread getThreadWithContactId:deviceLink.slave.hexEncodedPublicKey transaction:transaction]];
+        }
+    }];
+    for (TSContactThread *thread in threads) {
+        if (thread.hasPendingFriendRequest) {
+            [ThreadUtil enqueueFriendRequestAcceptanceMessageInThread:self.thread];
+        } else {
+            OWSMessageSender *messageSender = SSKEnvironment.shared.messageSender;
+            OWSMessageSend *automatedFriendRequestMessage = [messageSender getMultiDeviceFriendRequestMessageForHexEncodedPublicKey:thread.contactIdentifier];
+            [messageSender sendMessage:automatedFriendRequestMessage];
+        }
+    }
 }
 
 - (void)declineFriendRequest:(TSIncomingMessage *)friendRequest

SignalServiceKit/src/Loki/Messaging/LokiMessageWrapper.swift

@@ -1,7 +1,7 @@
 
 public enum LokiMessageWrapper {
     
-    public enum WrappingError : LocalizedError {
+    public enum Error : LocalizedError {
         case failedToWrapData
         case failedToWrapMessageInEnvelope
         case failedToWrapEnvelopeInWebSocketMessage
@@ -24,7 +24,7 @@ public enum LokiMessageWrapper {
             let webSocketMessage = try createWebSocketMessage(around: envelope)
             return try webSocketMessage.serializedData()
         } catch let error {
-            throw error as? WrappingError ?? WrappingError.failedToWrapData
+            throw error as? Error ?? Error.failedToWrapData
         }
     }
     
@@ -36,12 +36,12 @@ public enum LokiMessageWrapper {
             if let content = try Data(base64Encoded: message.content) {
                 builder.setContent(content)
             } else {
-                throw WrappingError.failedToWrapMessageInEnvelope
+                throw Error.failedToWrapMessageInEnvelope
             }
             return try builder.build()
         } catch let error {
             print("[Loki] Failed to wrap message in envelope: \(error).")
-            throw WrappingError.failedToWrapMessageInEnvelope
+            throw Error.failedToWrapMessageInEnvelope
         }
     }
     
@@ -54,7 +54,7 @@ public enum LokiMessageWrapper {
             return try messageBuilder.build()
         } catch let error {
             print("[Loki] Failed to wrap envelope in web socket message: \(error).")
-            throw WrappingError.failedToWrapEnvelopeInWebSocketMessage
+            throw Error.failedToWrapEnvelopeInWebSocketMessage
         }
     }
     
@@ -66,7 +66,7 @@ public enum LokiMessageWrapper {
             return try SSKProtoEnvelope.parseData(envelope)
         } catch let error {
             print("[Loki] Failed to unwrap data: \(error).")
-            throw WrappingError.failedToUnwrapData
+            throw Error.failedToUnwrapData
         }
     }
 }

SignalServiceKit/src/Messages/OWSMessageSender.h

@@ -16,6 +16,7 @@ extern const NSUInteger kOversizeTextMessageSizeThreshold;
 @class TSOutgoingMessage;
 @class TSThread;
 @class YapDatabaseReadWriteTransaction;
+@class OWSMessageSend;
 
 @protocol ContactsManagerProtocol;
 
@@ -96,6 +97,9 @@ NS_SWIFT_NAME(MessageSender)
                         success:(void (^)(void))successHandler
                         failure:(void (^)(NSError *error))failureHandler;
 
+- (OWSMessageSend *)getMultiDeviceFriendRequestMessageForHexEncodedPublicKey:(NSString *)hexEncodedPublicKey;
+- (void)sendMessage:(OWSMessageSend *)messageSend;
+
 @end
 
 #pragma mark -