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TUIKit/TUIRoomKit/Source/View/ViewModel/RaiseHandApplicationNotificationViewModel.swift

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+//
+//  RaiseHandApplicationNotificationViewModel.swift
+//  TUIRoomKit
+//
+//  Created by janejntang on 2024/5/16.
+//
+
+import Foundation
+import RTCRoomEngine
+
+protocol RaiseHandApplicationNotificationViewModelResponder: AnyObject {
+    func showRaiseHandApplicationNotificationView(userId: String, userName: String, count: Int)
+    func hideRaiseHandApplicationNotificationView()
+}
+
+class RaiseHandApplicationNotificationViewModel: NSObject {
+    var delayDisappearanceTime = 5.0
+    lazy var userId: String? = {
+        return inviteSeatList.last?.userId
+    }()
+    lazy var userName: String? = {
+        return inviteSeatList.last?.userName
+    }()
+    lazy var applicationCount: Int? = {
+        return inviteSeatList.count
+    }()
+    weak var responder: RaiseHandApplicationNotificationViewModelResponder?
+    var inviteSeatList: [RequestEntity] {
+        EngineManager.shared.store.inviteSeatList
+    }
+    lazy var isShownRaiseHandApplicationNotificationView: Bool = {
+        return getShownRequestEntity() != nil
+    }()
+    override init() {
+        super.init()
+        subscribeEngine()
+    }
+    
+    private func subscribeEngine() {
+        EngineEventCenter.shared.subscribeEngine(event: .onRequestReceived, observer: self)
+        EngineEventCenter.shared.subscribeEngine(event: .onDeletedTakeSeatRequest, observer: self)
+        EngineEventCenter.shared.subscribeUIEvent(key: .TUIRoomKitService_RenewSeatList, responder: self)
+    }
+    
+    private func unsubscribeEngine() {
+        EngineEventCenter.shared.unsubscribeEngine(event: .onRequestReceived, observer: self)
+        EngineEventCenter.shared.unsubscribeEngine(event: .onDeletedTakeSeatRequest, observer: self)
+        EngineEventCenter.shared.unsubscribeUIEvent(key: .TUIRoomKitService_RenewSeatList, responder: self)
+    }
+    
+    private func getShownRequestEntity() -> RequestEntity? {
+        let currentTime = Date().timeIntervalSince1970
+        guard let lastItem = inviteSeatList.last else { return nil }
+        if delayDisappearanceTime > 0, currentTime - lastItem.timestamp > delayDisappearanceTime {
+            return nil
+        } else {
+            return lastItem
+        }
+    }
+    
+    func checkRaiseHandApplicationAction() {
+        RoomRouter.shared.presentPopUpViewController(viewType: .raiseHandApplicationListViewType, height: 720.scale375Height(), backgroundColor: UIColor(0x22262E))
+    }
+    
+    deinit {
+        unsubscribeEngine()
+    }
+}
+
+extension RaiseHandApplicationNotificationViewModel: RoomEngineEventResponder {
+    func onEngineEvent(name: EngineEventCenter.RoomEngineEvent, param: [String : Any]?) {
+        switch name {
+        case .onRequestReceived:
+            guard let request = param?["request"] as? TUIRequest else { return }
+            guard request.requestAction == .takeSeat else { return }
+            self.userId = request.userId
+            self.userName = request.userName
+            responder?.showRaiseHandApplicationNotificationView(userId: request.userId, userName: request.userName, count: inviteSeatList.count)
+        case .onDeletedTakeSeatRequest:
+            guard let userId = param?["userId"] as? String else { return }
+            guard userId == self.userId else { return }
+            let requestItem = getShownRequestEntity()
+            self.userId = requestItem?.userId
+            self.userName = requestItem?.userName
+            if let requestItem = requestItem {
+                responder?.showRaiseHandApplicationNotificationView(userId: requestItem.userId, userName: requestItem.userName, count: inviteSeatList.count)
+            } else {
+                responder?.hideRaiseHandApplicationNotificationView()
+            }
+        default: break
+        }
+    }
+}
+
+extension RaiseHandApplicationNotificationViewModel: RoomKitUIEventResponder {
+    func onNotifyUIEvent(key: EngineEventCenter.RoomUIEvent, Object: Any?, info: [AnyHashable : Any]?) {
+        if key == .TUIRoomKitService_RenewSeatList {
+            guard let requestItem = getShownRequestEntity() else { return }
+            responder?.showRaiseHandApplicationNotificationView(userId: requestItem.userId, userName: requestItem.userName, count: inviteSeatList.count)
+        }
+    }
+}
+
+