fix network

2026-03-10 21:37:51 +08:00
parent 76ed32ccf3
commit fac70d7496
7 changed files with 383 additions and 37 deletions
@@ -0,0 +1,66 @@
+import Foundation
+import Network
+import Combine
+
+/// 网络连接状态监控器，基于 NWPathMonitor 实时跟踪设备网络可达性。
+/// 供 UI 层展示离线提示、以及在网络恢复时触发自动重试。
+@MainActor
+final class NetworkMonitor: ObservableObject {
+    static let shared = NetworkMonitor()
+    
+    /// 当前是否有可用网络连接。
+    @Published private(set) var isConnected: Bool = true
+    /// 当前连接类型描述（Wi-Fi / 蜂窝 / 有线 / 未知）。
+    @Published private(set) var connectionType: ConnectionType = .unknown
+    
+    /// 网络从断开恢复到连接时发送信号，用于触发自动重试。
+    let networkRestoredPublisher = PassthroughSubject<Void, Never>()
+    
+    enum ConnectionType: String {
+        case wifi = "Wi-Fi"
+        case cellular = "蜂窝"
+        case wiredEthernet = "有线"
+        case unknown = "未知"
+    }
+    
+    private let monitor = NWPathMonitor()
+    private let monitorQueue = DispatchQueue(label: "com.tvbox.networkmonitor", qos: .utility)
+    private var wasDisconnected = false
+    
+    private init() {
+        startMonitoring()
+    }
+    
+    private func startMonitoring() {
+        monitor.pathUpdateHandler = { [weak self] path in
+            Task { @MainActor [weak self] in
+                guard let self else { return }
+                let connected = path.status == .satisfied
+                let previouslyConnected = self.isConnected
+                
+                self.isConnected = connected
+                self.connectionType = Self.resolveConnectionType(path)
+                
+                if connected && !previouslyConnected {
+                    self.networkRestoredPublisher.send()
+                }
+                
+                if !connected {
+                    self.wasDisconnected = true
+                }
+            }
+        }
+        monitor.start(queue: monitorQueue)
+    }
+    
+    private static func resolveConnectionType(_ path: NWPath) -> ConnectionType {
+        if path.usesInterfaceType(.wifi) { return .wifi }
+        if path.usesInterfaceType(.cellular) { return .cellular }
+        if path.usesInterfaceType(.wiredEthernet) { return .wiredEthernet }
+        return .unknown
+    }
+    
+    deinit {
+        monitor.cancel()
+    }
+}