Refactoring UI

Services/HeartRateDataService.cs

@@ -0,0 +1,232 @@
+using HeartRateMonitorAndroid.Models;
+using System.Diagnostics;
+
+namespace HeartRateMonitorAndroid.Services
+{
+    /// <summary>
+    /// 心率数据服务实现，作为前端与后台服务的桥梁
+    /// </summary>
+    public class HeartRateDataService : IHeartRateDataService
+    {
+        private const string Tag = "HeartRateDataService";
+        
+        // 静态实例，用于在后台服务和前端之间共享数据
+        private static HeartRateDataService _instance;
+        private static readonly object _lock = new object();
+
+        // 事件
+        public event Action<int> HeartRateDataReceived;
+        public event Action<ServiceStatus> ServiceStatusChanged;
+        public event Action<DeviceConnectionStatus> DeviceStatusChanged;
+
+        // 数据存储
+        private readonly HeartRateSessionData _sessionData = new();
+        private ServiceStatus _serviceStatus = new();
+        private DeviceConnectionStatus _deviceStatus = new();
+
+        private HeartRateDataService()
+        {
+            // 私有构造函数，确保单例模式
+        }
+
+        /// <summary>
+        /// 获取单例实例
+        /// </summary>
+        public static HeartRateDataService Instance
+        {
+            get
+            {
+                if (_instance == null)
+                {
+                    lock (_lock)
+                    {
+                        if (_instance == null)
+                        {
+                            _instance = new HeartRateDataService();
+                        }
+                    }
+                }
+                return _instance;
+            }
+        }
+
+        /// <summary>
+        /// 获取当前心率数据
+        /// </summary>
+        public HeartRateSessionData GetCurrentSessionData()
+        {
+            return _sessionData;
+        }
+
+        /// <summary>
+        /// 获取服务状态
+        /// </summary>
+        public ServiceStatus GetServiceStatus()
+        {
+            return _serviceStatus;
+        }
+
+        /// <summary>
+        /// 获取设备连接状态
+        /// </summary>
+        public DeviceConnectionStatus GetDeviceStatus()
+        {
+            return _deviceStatus;
+        }
+
+        /// <summary>
+        /// 启动后台服务（平台特定实现将在调用时提供）
+        /// </summary>
+        public async Task StartBackgroundServiceAsync()
+        {
+            try
+            {
+                // 通过依赖注入获取平台特定的服务启动器
+                var serviceStarter = ServiceHelper.Current?.BackgroundServiceStarter;
+                if (serviceStarter != null)
+                {
+                    await serviceStarter.StartServiceAsync();
+                    Debug.WriteLine($"{Tag}: 后台服务启动请求已发送");
+                }
+                else
+                {
+                    Debug.WriteLine($"{Tag}: 无法获取平台特定的服务启动器");
+                    throw new PlatformNotSupportedException("当前平台不支持后台服务");
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"{Tag}: 启动后台服务失败: {ex.Message}");
+                throw;
+            }
+        }
+
+        /// <summary>
+        /// 停止后台服务
+        /// </summary>
+        public async Task StopBackgroundServiceAsync()
+        {
+            try
+            {
+                var serviceStarter = ServiceHelper.Current?.BackgroundServiceStarter;
+                if (serviceStarter != null)
+                {
+                    await serviceStarter.StopServiceAsync();
+                    Debug.WriteLine($"{Tag}: 后台服务停止请求已发送");
+                }
+                else
+                {
+                    Debug.WriteLine($"{Tag}: 无法获取平台特定的服务启动器");
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"{Tag}: 停止后台服务失败: {ex.Message}");
+                throw;
+            }
+        }
+
+        // 以下方法供后台服务调用，用于更新数据和状态
+
+        /// <summary>
+        /// 更新心率数据（由后台服务调用）
+        /// </summary>
+        public void UpdateHeartRateData(int heartRate)
+        {
+            try
+            {
+                _sessionData.AddHeartRate(heartRate);
+                HeartRateDataReceived?.Invoke(heartRate);
+                //Debug.WriteLine($"{Tag}: 心率数据已更新: {heartRate} bpm");
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"{Tag}: 更新心率数据失败: {ex.Message}");
+            }
+        }
+
+        /// <summary>
+        /// 更新服务状态（由后台服务调用）
+        /// </summary>
+        public void UpdateServiceStatus(bool isRunning, string statusMessage, bool isWebSocketConnected, string webSocketUrl = "")
+        {
+            try
+            {
+                _serviceStatus.IsRunning = isRunning;
+                _serviceStatus.StatusMessage = statusMessage;
+                _serviceStatus.IsWebSocketConnected = isWebSocketConnected;
+                _serviceStatus.WebSocketUrl = webSocketUrl;
+                _serviceStatus.LastUpdateTime = DateTime.Now;
+
+                ServiceStatusChanged?.Invoke(_serviceStatus);
+                Debug.WriteLine($"{Tag}: 服务状态已更新: {statusMessage}");
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"{Tag}: 更新服务状态失败: {ex.Message}");
+            }
+        }
+
+        /// <summary>
+        /// 更新设备连接状态（由后台服务调用）
+        /// </summary>
+        public void UpdateDeviceStatus(bool isConnected, string deviceName, string connectionMessage)
+        {
+            try
+            {
+                _deviceStatus.IsConnected = isConnected;
+                _deviceStatus.DeviceName = deviceName;
+                _deviceStatus.ConnectionMessage = connectionMessage;
+                _deviceStatus.LastConnectionTime = DateTime.Now;
+
+                DeviceStatusChanged?.Invoke(_deviceStatus);
+                Debug.WriteLine($"{Tag}: 设备状态已更新: {connectionMessage}");
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"{Tag}: 更新设备状态失败: {ex.Message}");
+            }
+        }
+
+        /// <summary>
+        /// 重置会话数据（由后台服务调用）
+        /// </summary>
+        public void ResetSessionData()
+        {
+            try
+            {
+                _sessionData.ResetData();
+                Debug.WriteLine($"{Tag}: 会话数据已重置");
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"{Tag}: 重置会话数据失败: {ex.Message}");
+            }
+        }
+    }
+
+    /// <summary>
+    /// 平台特定服务启动器接口
+    /// </summary>
+    public interface IBackgroundServiceStarter
+    {
+        Task StartServiceAsync();
+        Task StopServiceAsync();
+    }
+
+    /// <summary>
+    /// 服务助手类，用于获取平台特定的服务
+    /// </summary>
+    public static class ServiceHelper
+    {
+        public static IServiceHelper Current { get; set; }
+    }
+
+    /// <summary>
+    /// 服务助手接口
+    /// </summary>
+    public interface IServiceHelper
+    {
+        IBackgroundServiceStarter BackgroundServiceStarter { get; }
+    }
+}