using System.Collections.Concurrent;
using System.Collections.ObjectModel;
using System.Threading.Tasks;
using Avalonia.Threading;
using DispenserCommon.Aop;
using DispenserCommon.DTO;
using DispenserCommon.Events;
using DispenserCommon.Ioc;
using ReactiveUI;

namespace DispenserUI.ViewModels.Components;

/// <summary>
///     控制台日志
/// </summary>
[Component, GlobalTry]
public class ConsoleLogVM : ViewModelBase
{
    // 实现的最大行数
    private const int MaxLines = 200;
    private ObservableCollection<LogMessage> _logs = [];

    public ObservableCollection<LogMessage> Logs
    {
        get => _logs;
        set => this.RaiseAndSetIfChanged(ref _logs, value);
    }

    private readonly BlockingCollection<LogMessage> _buffer = new(100);

    /// <summary>
    ///     监听控制台日志
    /// </summary>
    /// <param name="type"></param>
    /// <param name="log"></param>
    [EventAction(EventType.RollingLog)]
    public void Listening(EventType type, LogMessage log)
    {
        _buffer.TryAdd(log);
    }

    /// <summary>
    /// 将日志渲染到界面
    /// </summary>
    public void RenderLog()
    {
        Task.Run(() =>
        {
            foreach (var log in _buffer.GetConsumingEnumerable())
            {
                Dispatcher.UIThread.InvokeAsync(() =>
                {
                    if (Logs.Count >= MaxLines) Logs.RemoveAt(0);

                    Logs.Add(log);
                });
                Task.Delay(100).Wait();
            }
        });
    }
}