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TUIKit/TUICallKit/TUICallKit-Swift/ViewModel/Component/VideoLayout/GroupCallVideoCellViewModel.swift

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+//
+//  GroupCallVideoCellViewModel.swift
+//  TUICallKit
+//
+//  Created by vincepzhang on 2023/3/6.
+//
+
+import Foundation
+import TUICallEngine
+
+class GroupCallVideoCellViewModel {
+    
+    let showLargeViewUserIdObserver = Observer()
+    let remoteUserStatusObserver = Observer()
+    let remoteUserVideoAvailableObserver = Observer()
+    let remotePlayoutVolumeObserver = Observer()
+    let remoteNetworkQualityObserver = Observer()
+    
+    var remoteUser = User()
+    let isShowLargeViewUserId: Observable<Bool> = Observable(false)
+    let remoteUserStatus: Observable<TUICallStatus> = Observable(.none)
+    let remoteUserVideoAvailable: Observable<Bool> = Observable(false)
+    let remoteUserVolume: Observable<Float> = Observable(0)
+    let remoteIsShowLowNetworkQuality: Observable<Bool> = Observable(false)
+    
+    init(remote: User) {
+        remoteUser = remote
+        isShowLargeViewUserId.value = (TUICallState.instance.showLargeViewUserId.value == remote.id.value) && (remote.id.value.count > 0)
+        registerObserve()
+    }
+    
+    deinit {
+        TUICallState.instance.showLargeViewUserId.removeObserver(showLargeViewUserIdObserver)
+        
+        for index in 0..<TUICallState.instance.remoteUserList.value.count {
+            guard index < TUICallState.instance.remoteUserList.value.count else {
+                break
+            }
+            if TUICallState.instance.remoteUserList.value[index].id.value == remoteUser.id.value {
+                TUICallState.instance.remoteUserList.value[index].callStatus.removeObserver(remoteUserStatusObserver)
+                TUICallState.instance.remoteUserList.value[index].videoAvailable.removeObserver(remoteUserVideoAvailableObserver)
+                TUICallState.instance.remoteUserList.value[index].networkQualityReminder.removeObserver(remoteNetworkQualityObserver)
+                TUICallState.instance.remoteUserList.value[index].playoutVolume.removeObserver(remotePlayoutVolumeObserver)
+            }
+        }
+    }
+    
+    func registerObserve() {
+        TUICallState.instance.showLargeViewUserId.addObserver(showLargeViewUserIdObserver, closure: {  [weak self] newValue, _ in
+            guard let self = self else { return }
+            self.isShowLargeViewUserId.value = (newValue == self.remoteUser.id.value)
+        })
+        
+        for index in 0..<TUICallState.instance.remoteUserList.value.count {
+            guard index < TUICallState.instance.remoteUserList.value.count else {
+                break
+            }
+            
+            if TUICallState.instance.remoteUserList.value[index].id.value == remoteUser.id.value {
+                
+                remoteUserStatus.value = TUICallState.instance.remoteUserList.value[index].callStatus.value
+                remoteUserVideoAvailable.value = TUICallState.instance.remoteUserList.value[index].videoAvailable.value
+                
+                TUICallState.instance.remoteUserList.value[index].callStatus.addObserver(remoteUserStatusObserver,
+                                                                                         closure: { [weak self] newValue, _ in
+                    guard let self = self else { return }
+                    self.remoteUserStatus.value = newValue
+                })
+                
+                TUICallState.instance.remoteUserList.value[index].videoAvailable.addObserver(remoteUserVideoAvailableObserver,
+                                                                                             closure: { [weak self] newValue, _ in
+                    guard let self = self else { return }
+                    self.remoteUserVideoAvailable.value = newValue
+                })
+                
+                TUICallState.instance.remoteUserList.value[index].networkQualityReminder.addObserver(remoteNetworkQualityObserver)
+                { [weak self] newValue, _ in
+                    guard let self = self else { return }
+                    self.remoteIsShowLowNetworkQuality.value = newValue
+                }
+                
+                TUICallState.instance.remoteUserList.value[index].playoutVolume.addObserver(remotePlayoutVolumeObserver)
+                { [weak self] newValue, _ in
+                    guard let self = self else { return }
+                    self.remoteUserVolume.value = newValue
+                }
+            }
+        }
+    }
+    
+}