Merge pull request #41 from loki-project/rss

RSS Feed Support

Podfile

@@ -73,6 +73,7 @@ target 'Signal' do
 
   # Loki
   pod 'GCDWebServer', '~> 3.0'
+  pod 'FeedKit', '~> 8.1'
 
   target 'SignalTests' do
     inherit! :search_paths

Podfile.lock

@@ -36,6 +36,7 @@ PODS:
   - Curve25519Kit/Tests (2.1.0):
     - CocoaLumberjack
     - SignalCoreKit
+  - FeedKit (8.1.1)
   - GCDWebServer (3.5.2):
     - GCDWebServer/Core (= 3.5.2)
   - GCDWebServer/Core (3.5.2)
@@ -198,6 +199,7 @@ DEPENDENCIES:
   - CryptoSwift
   - Curve25519Kit (from `https://github.com/signalapp/Curve25519Kit`)
   - Curve25519Kit/Tests (from `https://github.com/signalapp/Curve25519Kit`)
+  - FeedKit (~> 8.1)
   - GCDWebServer (~> 3.0)
   - GRKOpenSSLFramework (from `https://github.com/signalapp/GRKOpenSSLFramework`)
   - HKDFKit (from `https://github.com/signalapp/HKDFKit.git`)
@@ -224,6 +226,7 @@ SPEC REPOS:
     - AFNetworking
     - CocoaLumberjack
     - CryptoSwift
+    - FeedKit
     - GCDWebServer
     - IGIdenticon
     - libPhoneNumber-iOS
@@ -297,6 +300,7 @@ SPEC CHECKSUMS:
   CocoaLumberjack: 2f44e60eb91c176d471fdba43b9e3eae6a721947
   CryptoSwift: d81eeaa59dc5a8d03720fe919a6fd07b51f7439f
   Curve25519Kit: b3e77b7152ebe95fee2b3fb6c955449492bc14f7
+  FeedKit: 3418eed25f0b493b205b4de1b8511ac21d413fa9
   GCDWebServer: ead88cd14596dd4eae4f5830b8877c87c8728990
   GRKOpenSSLFramework: 8a3735ad41e7dc1daff460467bccd32ca5d6ae3e
   HKDFKit: 3b6dbbb9d59c221cc6c52c3aa915700cbf24e376
@@ -309,7 +313,7 @@ SPEC CHECKSUMS:
   SAMKeychain: 483e1c9f32984d50ca961e26818a534283b4cd5c
   SignalCoreKit: c2d8132cdedb95d35eb2f8ae7eac0957695d0a8b
   SignalMetadataKit: 6fa5e9a53c7f104568662521a2f3874672ff7a02
-  SignalServiceKit: 5c5b63a39d5054201ab59ef6daf0fa0a1a0c7887
+  SignalServiceKit: 102576f58e17a5fe3093899adce7e7c192a7bee0
   SQLCipher: efbdb52cdbe340bcd892b1b14297df4e07241b7f
   SSZipArchive: 8e859da2520142e09166bc9161967db296e9d02f
   Starscream: ef3ece99d765eeccb67de105bfa143f929026cf5
@@ -317,6 +321,6 @@ SPEC CHECKSUMS:
   YapDatabase: b418a4baa6906e8028748938f9159807fd039af4
   YYImage: 1e1b62a9997399593e4b9c4ecfbbabbf1d3f3b54
 
-PODFILE CHECKSUM: 10152a1fffafd51206b62fdd8cac86a5de8cf083
+PODFILE CHECKSUM: 95f41137d4fe8c5b8a27de951b328f8c9531d166
 
-COCOAPODS: 1.7.2
+COCOAPODS: 1.5.3

Pods

@@ -1 +1 @@
-Subproject commit d9ab8b13002bf6ebc932ca4f45df56b577b6a188
+Subproject commit 20b736ae28ecd42b5fc13f583a010ac9354be507

Signal.xcodeproj/project.pbxproj

@@ -3276,12 +3276,13 @@
 			files = (
 			);
 			inputPaths = (
-				"${PODS_ROOT}/Target Support Files/Pods-Signal/Pods-Signal-frameworks.sh",
+				"${SRCROOT}/Pods/Target Support Files/Pods-Signal/Pods-Signal-frameworks.sh",
 				"${BUILT_PRODUCTS_DIR}/AFNetworking/AFNetworking.framework",
 				"${BUILT_PRODUCTS_DIR}/AxolotlKit/AxolotlKit.framework",
 				"${BUILT_PRODUCTS_DIR}/CocoaLumberjack/CocoaLumberjack.framework",
 				"${BUILT_PRODUCTS_DIR}/CryptoSwift/CryptoSwift.framework",
 				"${BUILT_PRODUCTS_DIR}/Curve25519Kit/Curve25519Kit.framework",
+				"${BUILT_PRODUCTS_DIR}/FeedKit/FeedKit.framework",
 				"${BUILT_PRODUCTS_DIR}/GCDWebServer/GCDWebServer.framework",
 				"${PODS_ROOT}/GRKOpenSSLFramework/OpenSSL-iOS/bin/openssl.framework",
 				"${BUILT_PRODUCTS_DIR}/HKDFKit/HKDFKit.framework",
@@ -3309,6 +3310,7 @@
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/CocoaLumberjack.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/CryptoSwift.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/Curve25519Kit.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/FeedKit.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/GCDWebServer.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/openssl.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/HKDFKit.framework",
@@ -3331,7 +3333,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-Signal/Pods-Signal-frameworks.sh\"\n";
+			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-Signal/Pods-Signal-frameworks.sh\"\n";
 			showEnvVarsInLog = 0;
 		};
 		6565655F4068F9E5CDC5687F /* [CP] Check Pods Manifest.lock */ = {
@@ -3358,7 +3360,7 @@
 			files = (
 			);
 			inputPaths = (
-				"${PODS_ROOT}/Target Support Files/Pods-SignalTests/Pods-SignalTests-frameworks.sh",
+				"${SRCROOT}/Pods/Target Support Files/Pods-SignalTests/Pods-SignalTests-frameworks.sh",
 				"${BUILT_PRODUCTS_DIR}/AFNetworking/AFNetworking.framework",
 				"${BUILT_PRODUCTS_DIR}/AxolotlKit/AxolotlKit.framework",
 				"${BUILT_PRODUCTS_DIR}/CocoaLumberjack/CocoaLumberjack.framework",
@@ -3409,7 +3411,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-SignalTests/Pods-SignalTests-frameworks.sh\"\n";
+			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-SignalTests/Pods-SignalTests-frameworks.sh\"\n";
 			showEnvVarsInLog = 0;
 		};
 		F4C416F20E3CB0B25DC10C56 /* [CP] Check Pods Manifest.lock */ = {

Signal/src/AppDelegate.h

@@ -8,6 +8,7 @@ extern NSString *const AppDelegateStoryboardMain;
 
 @interface AppDelegate : UIResponder <UIApplicationDelegate>
 
-- (void)startPublicChatPollingIfNeeded;
+- (void)createGroupChatsIfNeeded;
+- (void)startGroupChatPollersIfNeeded;
 
 @end

Signal/src/AppDelegate.m

@@ -65,6 +65,8 @@ static NSTimeInterval launchStartedAt;
 @property (nonatomic) BOOL didAppLaunchFail;
 @property (nonatomic) LKP2PServer *lokiP2PServer;
 @property (nonatomic) LKGroupChatPoller *lokiPublicChatPoller;
+@property (nonatomic) LKGroupChatPoller *lokiNewsPoller;
+@property (nonatomic) LKGroupChatPoller *lokiMessengerUpdatesPoller;
 
 @end
 
@@ -1485,15 +1487,30 @@ static NSTimeInterval launchStartedAt;
 
 #pragma mark - Loki
 
-- (void)setUpPublicChatIfNeeded
+- (LKGroupChat *)lokiPublicChat
 {
-    if (self.lokiPublicChatPoller != nil) { return; }
+    return [[LKGroupChat alloc] initWithKindAsString:@"publicChat" id:@(LKGroupChatAPI.publicChatID).stringValue server:LKGroupChatAPI.publicChatServer displayName:NSLocalizedString(@"Loki Public Chat", @"") isDeletable:true];
-    self.lokiPublicChatPoller = [[LKGroupChatPoller alloc] initForGroup:(NSUInteger)LKGroupChatAPI.publicChatID onServer:LKGroupChatAPI.publicChatServer];
+}
-    BOOL isPublicChatSetUp = [NSUserDefaults.standardUserDefaults boolForKey:@"isPublicChatSetUp"];
+
-    if (isPublicChatSetUp) { return; }
+- (LKGroupChat *)lokiNews
-    NSString *title = NSLocalizedString(@"Loki Public Chat", @"");
+{
-    NSData *groupID = [[[LKGroupChatAPI.publicChatServer stringByAppendingString:@"."] stringByAppendingString:@(LKGroupChatAPI.publicChatID).stringValue] dataUsingEncoding:NSUTF8StringEncoding];
+    return [[LKGroupChat alloc] initWithKindAsString:@"rss" id:@"loki.network.feed" server:@"https://loki.network/feed/" displayName:NSLocalizedString(@"Loki News", @"") isDeletable:true];
-    TSGroupModel *group = [[TSGroupModel alloc] initWithTitle:title memberIds:@[ OWSIdentityManager.sharedManager.identityKeyPair.hexEncodedPublicKey, LKGroupChatAPI.publicChatServer ] image:nil groupId:groupID];
+}
+
+- (LKGroupChat *)lokiMessengerUpdates
+{
+    return [[LKGroupChat alloc] initWithKindAsString:@"rss" id:@"loki.network.messenger-update" server:@"https://loki.network/category/messenger-updates/feed/" displayName:NSLocalizedString(@"Loki Messenger Updates", @"") isDeletable:false];
+}
+
+- (void)createGroupChatsIfNeeded
+{
+    NSArray *allGroupChats = @[ self.lokiPublicChat, self.lokiNews, self.lokiMessengerUpdates ];
+    NSString *userHexEncodedPublicKey = OWSIdentityManager.sharedManager.identityKeyPair.hexEncodedPublicKey;
+    for (LKGroupChat *chat in allGroupChats) {
+        NSString *userDefaultsKey = [@"isSetUp." stringByAppendingString:chat.id];
+        BOOL isChatSetUp = [NSUserDefaults.standardUserDefaults boolForKey:userDefaultsKey];
+        if (!isChatSetUp || !chat.isDeletable) {
+            TSGroupModel *group = [[TSGroupModel alloc] initWithTitle:chat.displayName memberIds:@[ userHexEncodedPublicKey, chat.server ] image:nil groupId:[chat.id dataUsingEncoding:NSUTF8StringEncoding]];
             __block TSGroupThread *thread;
             [OWSPrimaryStorage.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
                 thread = [TSGroupThread getOrCreateThreadWithGroupModel:group transaction:transaction];
@@ -1506,13 +1523,24 @@ static NSTimeInterval launchStartedAt;
                 [thread updateWithMutedUntilDate:date transaction:transaction];
             }];
             [OWSProfileManager.sharedManager addThreadToProfileWhitelist:thread];
-    [NSUserDefaults.standardUserDefaults setBool:YES forKey:@"isPublicChatSetUp"];
+            [NSUserDefaults.standardUserDefaults setBool:YES forKey:userDefaultsKey];
+        }
+    }
+}
+
+- (void)createGroupChatPollersIfNeeded
+{
+    if (self.lokiPublicChatPoller == nil) { self.lokiPublicChatPoller = [[LKGroupChatPoller alloc] initForGroup:self.lokiPublicChat]; }
+    if (self.lokiNewsPoller == nil) { self.lokiNewsPoller = [[LKGroupChatPoller alloc] initForGroup:self.lokiNews]; }
+    if (self.lokiMessengerUpdatesPoller == nil) { self.lokiMessengerUpdatesPoller = [[LKGroupChatPoller alloc] initForGroup:self.lokiMessengerUpdates]; }
 }
 
-- (void)startPublicChatPollingIfNeeded
+- (void)startGroupChatPollersIfNeeded
 {
-    [self setUpPublicChatIfNeeded];
+    [self createGroupChatPollersIfNeeded];
     [self.lokiPublicChatPoller startIfNeeded];
+    [self.lokiNewsPoller startIfNeeded];
+    [self.lokiMessengerUpdatesPoller startIfNeeded];
 }
 
 @end

Signal/src/Loki/LokiGroupChatPoller.swift

@@ -1,26 +1,41 @@
+import FeedKit
+
+// TODO: Move the RSS feed logic into its own file
 
 @objc(LKGroupChatPoller)
 public final class LokiGroupChatPoller : NSObject {
-    private let group: UInt
+    private let group: LokiGroupChat
-    private let server: String
     private var pollForNewMessagesTimer: Timer? = nil
     private var pollForDeletedMessagesTimer: Timer? = nil
     private var hasStarted = false
     
-    private let pollForNewMessagesInterval: TimeInterval = 4
+    private lazy var pollForNewMessagesInterval: TimeInterval = {
-    private let pollForDeletedMessagesInterval: TimeInterval = 120
+        switch group.kind {
+        case .publicChat(_): return 4
+        case .rss(_): return 8 * 60
+        }
+    }()
     
-    @objc(initForGroup:onServer:)
+    private lazy var pollForDeletedMessagesInterval: TimeInterval = {
-    public init(for group: UInt, on server: String) {
+        switch group.kind {
+        case .publicChat(_): return 32 * 60
+        case .rss(_): preconditionFailure()
+        }
+    }()
+    
+    @objc(initForGroup:)
+    public init(for group: LokiGroupChat) {
         self.group = group
-        self.server = server
         super.init()
     }
     
     @objc public func startIfNeeded() {
         if hasStarted { return }
         pollForNewMessagesTimer = Timer.scheduledTimer(withTimeInterval: pollForNewMessagesInterval, repeats: true) { [weak self] _ in self?.pollForNewMessages() }
+        pollForNewMessages() // Perform initial update
+        if group.isPublicChat {
             pollForDeletedMessagesTimer = Timer.scheduledTimer(withTimeInterval: pollForDeletedMessagesInterval, repeats: true) { [weak self] _ in self?.pollForDeletedMessages() }
+        }
         hasStarted = true
     }
     
@@ -32,23 +47,17 @@ public final class LokiGroupChatPoller : NSObject {
     
     private func pollForNewMessages() {
         let group = self.group
-        let server = self.server
+        func parseGroupMessage(body: String, timestamp: UInt64, senderDisplayName: String) {
-        let _ = LokiGroupChatAPI.getMessages(for: group, on: server).map { messages in
+            let id = group.id.data(using: String.Encoding.utf8)!
-            messages.reversed().map { message in
-                let id = "\(server).\(group)".data(using: String.Encoding.utf8)!
             let x1 = SSKProtoGroupContext.builder(id: id, type: .deliver)
-                x1.setName(NSLocalizedString("Loki Public Chat", comment: ""))
+            x1.setName(group.displayName)
             let x2 = SSKProtoDataMessage.builder()
-                x2.setTimestamp(message.timestamp)
+            x2.setTimestamp(timestamp)
             x2.setGroup(try! x1.build())
-                x2.setBody(message.body)
+            x2.setBody(body)
             let x3 = SSKProtoContent.builder()
             x3.setDataMessage(try! x2.build())
-                let x4 = SSKProtoEnvelope.builder(type: .ciphertext, timestamp: message.timestamp)
+            let x4 = SSKProtoEnvelope.builder(type: .ciphertext, timestamp: timestamp)
-                let senderHexEncodedPublicKey = message.hexEncodedPublicKey
-                let endIndex = senderHexEncodedPublicKey.endIndex
-                let cutoffIndex = senderHexEncodedPublicKey.index(endIndex, offsetBy: -8)
-                let senderDisplayName = "\(message.displayName) (...\(senderHexEncodedPublicKey[cutoffIndex..<endIndex]))"
             x4.setSource(senderDisplayName)
             x4.setSourceDevice(OWSDevicePrimaryDeviceId)
             x4.setContent(try! x3.build().serializedData())
@@ -56,6 +65,41 @@ public final class LokiGroupChatPoller : NSObject {
                 SSKEnvironment.shared.messageManager.throws_processEnvelope(try! x4.build(), plaintextData: try! x3.build().serializedData(), wasReceivedByUD: false, transaction: transaction)
             }
         }
+        switch group.kind {
+        case .publicChat(let id):
+            let _ = LokiGroupChatAPI.getMessages(for: id, on: group.server).done { messages in
+                messages.reversed().forEach { message in
+                    let senderHexEncodedPublicKey = message.hexEncodedPublicKey
+                    let endIndex = senderHexEncodedPublicKey.endIndex
+                    let cutoffIndex = senderHexEncodedPublicKey.index(endIndex, offsetBy: -8)
+                    let senderDisplayName = "\(message.displayName) (...\(senderHexEncodedPublicKey[cutoffIndex..<endIndex]))"
+                    parseGroupMessage(body: message.body, timestamp: message.timestamp, senderDisplayName: senderDisplayName)
+                }
+            }
+        case .rss(_):
+            let url = URL(string: group.server)!
+            FeedParser(URL: url).parseAsync { wrapper in
+                guard case .rss(let feed) = wrapper, let items = feed.items else { return print("[Loki] Failed to parse RSS feed for: \(group.server)") }
+                items.reversed().forEach { item in
+                    guard let title = item.title, let description = item.description, let date = item.pubDate else { return }
+                    let timestamp = UInt64(date.timeIntervalSince1970 * 1000)
+                    let regex = try! NSRegularExpression(pattern: "<a\\s+(?:[^>]*?\\s+)?href=\"([^\"]*)\".*?>(.*?)<.*?\\/a>")
+                    var bodyAsHTML = "<b>\(title)</b>\(description)"
+                    while true {
+                        guard let match = regex.firstMatch(in: bodyAsHTML, options: [], range: NSRange(location: 0, length: bodyAsHTML.utf16.count)) else { break }
+                        let matchRange = match.range(at: 0)
+                        let urlRange = match.range(at: 1)
+                        let descriptionRange = match.range(at: 2)
+                        let url = (bodyAsHTML as NSString).substring(with: urlRange)
+                        let description = (bodyAsHTML as NSString).substring(with: descriptionRange)
+                        bodyAsHTML = (bodyAsHTML as NSString).replacingCharacters(in: matchRange, with: "\(description) (\(url))") as String
+                    }
+                    guard let bodyAsData = bodyAsHTML.data(using: String.Encoding.unicode) else { return }
+                    let options = [ NSAttributedString.DocumentReadingOptionKey.documentType : NSAttributedString.DocumentType.html ]
+                    guard let body = try? NSAttributedString(data: bodyAsData, options: options, documentAttributes: nil) else { return }
+                    parseGroupMessage(body: body.string, timestamp: timestamp, senderDisplayName: NSLocalizedString("Loki", comment: ""))
+                }
+            }
         }
     }
     

Signal/src/ViewControllers/HomeView/HomeViewController.m

@@ -692,7 +692,8 @@ typedef NS_ENUM(NSInteger, HomeViewControllerSection) {
     }
     if (OWSIdentityManager.sharedManager.identityKeyPair != nil) {
         AppDelegate *appDelegate = (AppDelegate *)UIApplication.sharedApplication.delegate;
-        [appDelegate startPublicChatPollingIfNeeded];
+        [appDelegate createGroupChatsIfNeeded];
+        [appDelegate startGroupChatPollersIfNeeded];
     }
 }
 

Signal/translations/en.lproj/Localizable.strings

@@ -2607,6 +2607,8 @@
 "Update Required" = "Update Required";
 "This version of Loki Messenger is no longer supported. Please press OK to reset your account and migrate to the latest version." = "This version of Loki Messenger is no longer supported. Please press OK to reset your account and migrate to the latest version.";
 "Loki Public Chat" = "Loki Public Chat";
+"Loki News" = "Loki News";
+"Loki Messenger Updates" = "Loki Messenger Updates";
 "Show QR Code" = "Show QR Code";
 "This is your personal QR code. Other people can scan it to start a secure conversation with you." = "This is your personal QR code. Other people can scan it to start a secure conversation with you.";
 "Scan a QR Code Instead" = "Scan a QR Code Instead";
@@ -2614,3 +2616,4 @@
 "You can enable camera access in your device settings." = "You can enable camera access in your device settings.";
 "Scan the QR code of the person you'd like to securely message. They can find their QR code by going into Loki Messenger's in-app settings and clicking \"Show QR Code\"." = "Scan the QR code of the person you'd like to securely message. They can find their QR code by going into Loki Messenger's in-app settings and clicking \"Show QR Code\".";
 "Scan QR Code" = "Scan QR Code";
+"Loki" = "Loki";

SignalServiceKit/src/Loki/API/LokiGroupChat.swift

@@ -0,0 +1,48 @@
+
+@objc(LKGroupChat)
+public final class LokiGroupChat : NSObject {
+    public let kind: Kind
+    @objc public let server: String
+    @objc public let displayName: String
+    @objc public let isDeletable: Bool
+    
+    @objc public var id: String {
+        switch kind {
+        case .publicChat(let id): return "\(server).\(id)"
+        case .rss(let customID): return "rss://\(customID)"
+        }
+    }
+    
+    // MARK: Convenience
+    @objc public var isPublicChat: Bool {
+        if case .publicChat(_) = kind { return true } else { return false }
+    }
+    
+    @objc public var isRSS: Bool {
+        if case .rss(_) = kind { return true } else { return false }
+    }
+    
+    // MARK: Kind
+    public enum Kind { case publicChat(id: UInt), rss(customID: String) }
+    
+    // MARK: Initialization
+    public init(kind: Kind, server: String, displayName: String, isDeletable: Bool) {
+        self.kind = kind
+        self.server = server
+        self.displayName = displayName
+        self.isDeletable = isDeletable
+    }
+    
+    @objc public convenience init(kindAsString: String, id: String, server: String, displayName: String, isDeletable: Bool) {
+        let kind: Kind
+        switch kindAsString {
+        case "publicChat": kind = .publicChat(id: UInt(id)!)
+        case "rss": kind = .rss(customID: id)
+        default: preconditionFailure()
+        }
+        self.init(kind: kind, server: server, displayName: displayName, isDeletable: isDeletable)
+    }
+    
+    // MARK: Description
+    override public var description: String { return "\(id) (\(displayName))" }
+}

SignalServiceKit/src/Loki/API/LokiGroupChatAPI.swift

@@ -169,7 +169,7 @@ public final class LokiGroupChatAPI : NSObject {
                 dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
                 guard let json = rawResponse as? JSON, let messageAsJSON = json["data"] as? JSON, let serverID = messageAsJSON["id"] as? UInt, let body = messageAsJSON["text"] as? String,
                     let dateAsString = messageAsJSON["created_at"] as? String, let date = dateFormatter.date(from: dateAsString) else {
-                    print("[Loki] Couldn't parse messages for group chat with ID: \(group) on server: \(server) from: \(rawResponse).")
+                    print("[Loki] Couldn't parse message for group chat with ID: \(group) on server: \(server) from: \(rawResponse).")
                     throw Error.messageParsingFailed
                 }
                 let timestamp = UInt64(date.timeIntervalSince1970) * 1000
@@ -197,7 +197,7 @@ public final class LokiGroupChatAPI : NSObject {
             }
             return rawMessages.flatMap { message in
                 guard let serverID = message["id"] as? UInt else {
-                    print("[Loki] Couldn't parse message for group chat with ID: \(group) on server: \(server) from: \(message).")
+                    print("[Loki] Couldn't parse deleted message for group chat with ID: \(group) on server: \(server) from: \(message).")
                     return nil
                 }
                 let isDeleted = (message["is_deleted"] as? Bool ?? false)