Show V2 open group member count

Session/Conversations/ConversationVC.swift

@@ -195,6 +195,10 @@ final class ConversationVC : BaseVC, ConversationViewModelDelegate, OWSConversat
         if !draft.isEmpty {
             snInputView.text = draft
         }
+        // Update member count if this is a V2 open group
+        if let v2OpenGroup = Storage.shared.getV2OpenGroup(for: thread.uniqueId!) {
+            OpenGroupAPIV2.getMemberCount(for: v2OpenGroup.room, on: v2OpenGroup.server).retainUntilComplete()
+        }
     }
     
     override func viewDidLayoutSubviews() {

SessionMessagingKit/Database/Storage+OpenGroups.swift

@@ -241,7 +241,11 @@ extension Storage {
     }
 
     public func setUserCount(to newValue: Int, forOpenGroupWithID openGroupID: String, using transaction: Any) {
-        (transaction as! YapDatabaseReadWriteTransaction).setObject(newValue, forKey: openGroupID, inCollection: Storage.oldOpenGroupUserCountCollection)
+        let transaction = transaction as! YapDatabaseReadWriteTransaction
+        transaction.setObject(newValue, forKey: openGroupID, inCollection: Storage.oldOpenGroupUserCountCollection)
+        transaction.addCompletionQueue(.main) {
+            NotificationCenter.default.post(name: .groupThreadUpdated, object: nil)
+        }
     }
 
     private static let oldOpenGroupCollection = "LokiPublicChatCollection"

SessionMessagingKit/Open Groups/V2/OpenGroupAPIV2.swift

@@ -343,10 +343,14 @@ public final class OpenGroupAPIV2 : NSObject {
         }
     }
     
-    public static func getMemberCount(for room: String, on server: String) -> Promise<UInt> {
+    public static func getMemberCount(for room: String, on server: String) -> Promise<UInt64> {
         let request = Request(verb: .get, room: room, server: server, endpoint: "member_count")
         return send(request).map(on: DispatchQueue.global(qos: .userInitiated)) { json in
-            guard let memberCount = json["member_count"] as? UInt else { throw Error.parsingFailed }
+            guard let memberCount = json["member_count"] as? UInt64 else { throw Error.parsingFailed }
+            let storage = SNMessagingKitConfiguration.shared.storage
+            storage.write { transaction in
+                storage.setUserCount(to: memberCount, forV2OpenGroupWithID: "\(server).\(room)", using: transaction)
+            }
             return memberCount
         }
     }

SessionMessagingKit/Storage.swift

@@ -67,7 +67,7 @@ public protocol SessionMessagingKitStorageProtocol {
 
     // MARK: - Open Group Metadata
 
-    func setUserCount(to newValue: Int, forOpenGroupWithID openGroupID: String, using transaction: Any)
+    func setUserCount(to newValue: UInt64, forV2OpenGroupWithID openGroupID: String, using transaction: Any)
     func getIDForMessage(withServerID serverID: UInt64) -> String?
     func setIDForMessage(withServerID serverID: UInt64, to messageID: String, using transaction: Any)
     func setOpenGroupDisplayName(to displayName: String, for publicKey: String, inOpenGroupWithID openGroupID: String, using transaction: Any)
@@ -104,4 +104,6 @@ public protocol SessionMessagingKitStorageProtocol {
 
     func getAllUserOpenGroups() -> [String:OpenGroup]
     func getOpenGroup(for threadID: String) -> OpenGroup?
+    
+    func setUserCount(to newValue: Int, forOpenGroupWithID openGroupID: String, using transaction: Any)
 }