Remove story live mode in groups

Author: laktyushin

submodules/TelegramUI/Components/CameraScreen/Sources/CameraScreen.swift

@@ -46,7 +46,7 @@ let collageGrids: [Camera.CollageGrid] = [
     Camera.CollageGrid(rows: [Camera.CollageGrid.Row(columns: 2), Camera.CollageGrid.Row(columns: 2), Camera.CollageGrid.Row(columns: 2)])
 ]
 
-enum CameraMode: Equatable {
+enum CameraMode: Int32, Equatable {
     case photo
     case video
     case live
@@ -318,6 +318,7 @@ private final class CameraScreenComponent: CombinedComponent {
 
         fileprivate var sendAsPeerId: EnginePeer.Id?
         fileprivate var isCustomTarget = false
+        fileprivate var canLivestream = true
 
         private var privacy: EngineStoryPrivacy = EngineStoryPrivacy(base: .everyone, additionallyIncludePeers: [])
         private var allowComments = true
@@ -388,6 +389,17 @@ private final class CameraScreenComponent: CombinedComponent {
                 if let customTarget = controller.customTarget {
                     self.sendAsPeerId = customTarget
                     self.isCustomTarget = true
+                    
+                    let _ = (self.context.engine.data.get(TelegramEngine.EngineData.Item.Peer.Peer(id: customTarget))
+                    |> deliverOnMainQueue).start(next: { [weak self] peer in
+                        guard let self else {
+                            return
+                        }
+                        if case let .channel(channel) = peer, case .group = channel.info {
+                            self.canLivestream = false
+                            self.updated()
+                        }
+                    })
                 }
 
                 let _ = (mediaEditorStoredState(engine: self.context.engine)
@@ -2091,7 +2103,7 @@ private final class CameraScreenComponent: CombinedComponent {
                 }
 
                 var availableModes: [CameraMode] = [.photo, .video]
-                if !isTablet {
+                if !isTablet && state.canLivestream {
                     availableModes.append(.live)
                 }
 

submodules/TelegramUI/Components/CameraScreen/Sources/ModeComponent.swift

@@ -115,7 +115,7 @@ final class ModeComponent: Component {
         private var backgroundView = UIView()
         private var glassContainerView = GlassBackgroundContainerView()
         private var selectionView = GlassBackgroundView()
-        private var itemViews: [ItemView] = []
+        private var itemViews: [Int32: ItemView] = [:]
 
         public func matches(tag: Any) -> Bool {
             if let component = self.component, let componentTag = component.tag {
@@ -179,14 +179,19 @@ final class ModeComponent: Component {
             var itemFrame = CGRect(origin: isTablet ? .zero : CGPoint(x: inset, y: 0.0), size: buttonSize)
             var selectedCenter = itemFrame.minX
             var selectedFrame = itemFrame
+            
+            var validKeys: Set<Int32> = Set()
             for mode in component.availableModes.reversed() {
+                let id = mode.rawValue
+                validKeys.insert(id)
+                
                 let itemView: ItemView
-                if self.itemViews.count == i {
+                if let current = self.itemViews[id] {
+                    itemView = current
+                } else {
                     itemView = ItemView()
                     self.backgroundView.addSubview(itemView)
-                    self.itemViews.append(itemView)
-                } else {
-                    itemView = self.itemViews[i]
+                    self.itemViews[id] = itemView
                 }
                 itemView.pressed = {
                     updatedMode(mode)
@@ -216,6 +221,20 @@ final class ModeComponent: Component {
                 i += 1
             }
 
+            var removeKeys: [Int32] = []
+            for (id, itemView) in self.itemViews {
+                if !validKeys.contains(id) {
+                    removeKeys.append(id)
+                    
+                    transition.setAlpha(view: itemView, alpha: 0.0, completion: { _ in
+                        itemView.removeFromSuperview()
+                    })
+                }
+            }
+            for id in removeKeys {
+                self.itemViews.removeValue(forKey: id)
+            }
+            
             let totalSize: CGSize
             let size: CGSize
             if isTablet {

submodules/TelegramUI/Components/ShareWithPeersScreen/Sources/ShareWithPeersScreenState.swift

@@ -101,6 +101,13 @@ public extension ShareWithPeersScreen {
 
             switch subject {
             case let .peers(peers, _):
+                let peers = peers.filter { peer in
+                    if liveStream, case let .channel(channel) = peer, case .group = channel.info {
+                        return false
+                    } else {
+                        return true
+                    }
+                }
                 self.stateDisposable = (.single(peers)
                 |> mapToSignal { peers -> Signal<([EnginePeer], [EnginePeer.Id: Optional<Int>]), NoError> in
                     return context.engine.data.subscribe(