using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.ComponentModel;
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using System.Linq;
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using System.Runtime.CompilerServices;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Media;
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using SmartScanner;
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namespace SmartScanner.ViewModel
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{
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public class LogEntry : INotifyPropertyChanged
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{
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private DateTime _timestamp;
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public DateTime Timestamp
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{
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get => _timestamp;
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set
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{
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_timestamp = value;
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OnPropertyChanged();
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}
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}
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private string _level;
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public string Level
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{
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get => _level;
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set
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{
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_level = value;
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OnPropertyChanged();
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}
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}
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private string _message;
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public string Message
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{
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get => _message;
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set
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{
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_message = value;
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OnPropertyChanged();
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}
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}
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private Brush _foreground;
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public Brush Foreground
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{
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get => _foreground;
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set
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{
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_foreground = value;
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OnPropertyChanged();
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}
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}
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public event PropertyChangedEventHandler PropertyChanged;
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protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
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{
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
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}
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}
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public class EnhancedLogViewModel : INotifyPropertyChanged
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{
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public ObservableCollection<LogEntry> LogEntries { get; } = new ObservableCollection<LogEntry>();
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private static readonly Lazy<EnhancedLogViewModel> _instance =
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new Lazy<EnhancedLogViewModel>(() => new EnhancedLogViewModel());
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public static EnhancedLogViewModel Instance => _instance.Value;
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// 日志自动保存服务
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private LogAutoSaveService _logAutoSaveService;
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private EnhancedLogViewModel()
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{
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// 初始化日志自动保存服务
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_logAutoSaveService = new LogAutoSaveService(LogEntries);
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}
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// 添加对ScrollViewer的引用
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private ScrollViewer _logScrollViewer;
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public ScrollViewer LogScrollViewer
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{
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get => _logScrollViewer;
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set
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{
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_logScrollViewer = value;
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OnPropertyChanged();
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}
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}
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public void AddLog(string message, string level = "INFO")
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{
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Application.Current.Dispatcher.Invoke(() =>
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{
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var entry = new LogEntry
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{
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Timestamp = DateTime.Now,
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Level = level,
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Message = message,
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Foreground = GetLevelColor(level)
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};
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LogEntries.Add(entry);
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// 限制日志数量
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if (LogEntries.Count > 500)
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{
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LogEntries.RemoveAt(0);
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}
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// 通知自动保存服务有新日志，传递LogEntry对象
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_logAutoSaveService?.LogAdded(entry);
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// 滚动到底部
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ScrollToBottom();
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});
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}
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/// <summary>
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/// 手动保存当前日志
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/// </summary>
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public void SaveLogs()
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{
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_logAutoSaveService?.ForceSave();
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}
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/// <summary>
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/// 停止日志自动保存服务
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/// </summary>
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public void StopAutoSaveService()
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{
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_logAutoSaveService?.Stop();
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_logAutoSaveService = null;
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}
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/// <summary>
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/// 获取自动保存服务状态
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/// </summary>
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public string GetAutoSaveStatus()
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{
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return _logAutoSaveService?.GetStatus() ?? "自动保存服务未运行";
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}
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private void ScrollToBottom()
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{
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if (LogScrollViewer != null)
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{
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LogScrollViewer.ScrollToEnd();
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}
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}
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private Brush GetLevelColor(string level)
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{
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switch (level)
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{
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case "ERROR":
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return Brushes.Red;
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case "WARN":
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return Brushes.Orange;
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case "DEBUG":
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return Brushes.Blue;
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default:
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return Brushes.Black;
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}
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}
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public event PropertyChangedEventHandler PropertyChanged;
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protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
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{
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
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}
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}
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}
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