Add get room info endpoint

SessionMessagingKit/Open Groups/V2/OpenGroupAPIV2.swift

@@ -58,6 +58,12 @@ public final class OpenGroupAPIV2 : NSObject {
         }
     }
     
+    // MARK: Info
+    public struct Info {
+        public let name: String
+        public let imageID: String
+    }
+
     // MARK: Convenience
     private static func send(_ request: Request) -> Promise<JSON> {
         let tsRequest: TSRequest
@@ -267,6 +273,14 @@ public final class OpenGroupAPIV2 : NSObject {
     }
     
     // MARK: General
+    public static func getInfo(for room: String, on server: String) -> Promise<Info> {
+        let request = Request(verb: .get, room: room, server: server, endpoint: "rooms/\(room)")
+        return send(request).map(on: DispatchQueue.global(qos: .userInitiated)) { json in
+            guard let name = json["name"] as? String, let imageID = json["image_id"] as? String else { throw Error.parsingFailed }
+            return Info(name: name, imageID: imageID)
+        }
+    }
+    
     public static func getMemberCount(for room: String, on server: String) -> Promise<UInt> {
         let request = Request(verb: .get, room: room, server: server, endpoint: "member_count")
         return send(request).map(on: DispatchQueue.global(qos: .userInitiated)) { json in

SessionMessagingKit/Open Groups/V2/OpenGroupManagerV2.swift

@@ -29,11 +29,13 @@ public final class OpenGroupManagerV2 : NSObject {
     }
 
     // MARK: Adding & Removing
-    public func add(room: String, server: String, name: String, using transaction: Any) {
+    public func add(room: String, server: String, publicKey: String, using transaction: Any) -> Promise<Void> {
         let storage = Storage.shared
         storage.removeLastMessageServerID(for: room, on: server, using: transaction)
         storage.removeLastDeletionServerID(for: room, on: server, using: transaction)
-        let openGroup = OpenGroupV2(server: server, room: room, name: name)
+        let (promise, seal) = Promise<Void>.pending()
+        OpenGroupAPIV2.getInfo(for: room, on: server).done(on: DispatchQueue.global(qos: .default)) { info in
+            let openGroup = OpenGroupV2(server: server, room: room, name: info.name, imageID: info.imageID)
             let groupID = LKGroupUtilities.getEncodedOpenGroupIDAsData(openGroup.id)
             let model = TSGroupModel(title: openGroup.name, memberIds: [ getUserHexEncodedPublicKey() ], image: nil, groupId: groupID, groupType: .openGroup, adminIds: [])
             storage.write(with: { transaction in
@@ -50,7 +52,12 @@ public final class OpenGroupManagerV2 : NSObject {
                 let poller = OpenGroupPollerV2(for: openGroup)
                 poller.startIfNeeded()
                 OpenGroupManagerV2.shared.pollers[openGroup.id] = poller
+                seal.fulfill(())
             })
+        }.catch(on: DispatchQueue.global(qos: .default)) { error in
+            seal.reject(error)
+        }
+        return promise
     }
 
     public func delete(_ openGroup: OpenGroupV2, associatedWith thread: TSThread, using transaction: YapDatabaseReadWriteTransaction) {

SessionMessagingKit/Open Groups/V2/OpenGroupV2.swift

@@ -5,12 +5,14 @@ public final class OpenGroupV2 : NSObject, NSCoding { // NSObject/NSCoding confo
     @objc public let room: String
     public let id: String
     public let name: String
+    public let imageID: String
 
-    public init(server: String, room: String, name: String) {
+    public init(server: String, room: String, name: String, imageID: String) {
         self.server = server.lowercased()
         self.room = room
         self.id = "\(server).\(room)"
         self.name = name
+        self.imageID = imageID
     }
 
     // MARK: Coding
@@ -19,6 +21,7 @@ public final class OpenGroupV2 : NSObject, NSCoding { // NSObject/NSCoding confo
         room = coder.decodeObject(forKey: "room") as! String
         self.id = "\(server).\(room)"
         name = coder.decodeObject(forKey: "name") as! String
+        imageID = coder.decodeObject(forKey: "imageID") as! String
         super.init()
     }
 
@@ -26,7 +29,8 @@ public final class OpenGroupV2 : NSObject, NSCoding { // NSObject/NSCoding confo
         coder.encode(server, forKey: "server")
         coder.encode(room, forKey: "room")
         coder.encode(name, forKey: "name")
+        coder.encode(imageID, forKey: "imageID")
     }
 
-    override public var description: String { "\(name) (\(server) → \(room)" }
+    override public var description: String { "\(name) (Server: \(server), Room: \(room)" }
 }