@page "/consoles"

<h3>Console 控制台</h3>

<h4>控制台组件，一般用于后台任务的输出</h4>

<DemoBlock Title="基本用法" Introduction="显示后台推送的消息" Name="Normal">
    <Console Items="@Messages" Height="126" />
</DemoBlock>

<DemoBlock Title="可清空的控制台" Introduction="通过设置 <code>OnClear</code> 回调方法对数据集进行清空操作，由于本例与上例使用相同数据源，会导致上例中数据源更新延时" Name="OnClear">
    <Console Items="@Messages" Height="126" OnClear="@OnClear" />
</DemoBlock>

<DemoBlock Title="不同颜色的消息" Introduction="通过设置 <code>ConsoleMessageItem</code> 的 <code>Color</code> 参数进行对颜色的更改" Name="Color">
    <Console Items="@ColorMessages" Height="126" />
</DemoBlock>

<DemoBlock Title="自动滚屏" Introduction="通过设置 <code>ShowAutoScroll</code> 属性值开启或者关闭自动滚屏功能" Name="AutoScroll">
    <p>设置 <code>ShowAutoScroll="true"</code> 显示自动滚屏选项</p>
    <Console Items="@Messages" Height="126" ShowAutoScroll="true" />

    <p class="mt-3">通过设置 <code>IsAutoScroll</code> 设置开启自动滚屏</p>
    <Console Items="@Messages" Height="126" IsAutoScroll="true" />
</DemoBlock>

<AttributeTable Items="@GetAttributes()" />

<AttributeTable Items="@GetItemAttributes()" Title="ConsoleMessageItem 属性" />

// Copyright (c) Argo Zhang (argo@163.com). All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
// Website: https://www.blazor.zone or https://argozhang.github.io/

using BootstrapBlazor.Components;
using BootstrapBlazor.Shared.Common;
using System.Collections.Concurrent;

namespace BootstrapBlazor.Shared.Samples;

/// <summary>
/// 
/// </summary>
public sealed partial class Consoles : IDisposable
{
    private ConcurrentQueue<ConsoleMessageItem> Messages { get; set; } = new();
    private ConcurrentQueue<ConsoleMessageItem> ColorMessages { get; set; } = new();

    private CancellationTokenSource? CancelTokenSource { get; set; }

    /// <summary>
    /// 
    /// </summary>
    /// <returns></returns>
    protected override void OnAfterRender(bool firstRender)
    {
        if (firstRender)
        {
            Task.Run(async () =>
            {
                CancelTokenSource = new CancellationTokenSource();
                while (CancelTokenSource != null && !CancelTokenSource.IsCancellationRequested)
                {
                    _locker.WaitOne();
                    Messages.Enqueue(new ConsoleMessageItem { Message = $"{DateTimeOffset.Now}: Dispatch Message" });

                    ColorMessages.Enqueue(new ConsoleMessageItem { Message = $"{DateTimeOffset.Now}: Dispatch Message", Color = GetColor() });

                    if (Messages.Count > 8)
                    {
                        Messages.TryDequeue(out var _);
                    }

                    if (ColorMessages.Count > 12)
                    {
                        ColorMessages.TryDequeue(out var _);
                    }
                    await InvokeAsync(StateHasChanged);
                    _locker.Set();

                    try
                    {
                        await Task.Delay(2000, CancelTokenSource.Token);
                    }
                    catch { }
                }
            });
        }
    }

    private static Color GetColor()
    {
        var second = DateTime.Now.Second;
        return (second % 3) switch
        {
            1 => Color.Danger,
            2 => Color.Info,
            _ => Color.None
        };
    }

    private readonly AutoResetEvent _locker = new(true);

    private void OnClear()
    {
        _locker.WaitOne();
        while (!Messages.IsEmpty)
        {
            Messages.TryDequeue(out var _);
        }
        _locker.Set();
    }

    private static IEnumerable<AttributeItem> GetItemAttributes() => new AttributeItem[]
    {
        new AttributeItem(){
            Name = "Message",
            Description = "控制台输出消息",
            Type = "string",
            ValueList = " — ",
            DefaultValue = " — "
        },
        new AttributeItem(){
            Name = "Color",
            Description = "消息颜色",
            Type = "Color",
            ValueList = "None / Active / Primary / Secondary / Success / Danger / Warning / Info / Light / Dark / Link",
            DefaultValue = "None"
        }
    };

    /// <summary>
    /// 
    /// </summary>
    /// <returns></returns>
    private static IEnumerable<AttributeItem> GetAttributes() => new AttributeItem[]
    {
        new AttributeItem(){
            Name = nameof(BootstrapBlazor.Components.Console.Items),
            Description = "组件数据源",
            Type = "IEnumerable<ConsoleMessageItem>",
            ValueList = " — ",
            DefaultValue = " — "
        },
        new AttributeItem(){
            Name = "Height",
            Description = "组件高度",
            Type = "int",
            ValueList = " — ",
            DefaultValue = "0"
        },
        new AttributeItem(){
            Name = nameof(BootstrapBlazor.Components.Console.IsAutoScroll),
            Description = "是否自动滚屏",
            Type = "bool",
            ValueList = "true|false",
            DefaultValue = "false"
        },
        new AttributeItem(){
            Name = "ShowAutoScroll",
            Description = "是否显示自动滚屏选项",
            Type = "bool",
            ValueList = "true|false",
            DefaultValue = "false"
        },
        new AttributeItem(){
            Name = "OnClear",
            Description = "组件清屏回调方法",
            Type = "int",
            ValueList = " — ",
            DefaultValue = "0"
        },
        new AttributeItem(){
            Name = "HeaderText",
            Description = "Header 显示文字",
            Type = "string",
            ValueList = " — ",
            DefaultValue = "系统监控"
        },
        new AttributeItem(){
            Name = "LightTitle",
            Description = "指示灯 Title",
            Type = "string",
            ValueList = " — ",
            DefaultValue = "通讯指示灯"
        },
        new AttributeItem(){
            Name = "ClearButtonText",
            Description = "按钮显示文字",
            Type = "string",
            ValueList = " — ",
            DefaultValue = "清屏"
        },
        new AttributeItem(){
            Name = "ClearButtonIcon",
            Description = "按钮显示图标",
            Type = "string",
            ValueList = " — ",
            DefaultValue = "fa fa-fw fa-times"
        },
        new AttributeItem(){
            Name = "ClearButtonColor",
            Description = "按钮颜色",
            Type = "Color",
            ValueList = "None / Active / Primary / Secondary / Success / Danger / Warning / Info / Light / Dark / Link",
            DefaultValue = "Secondary"
        }
    };

    private void Dispose(bool disposing)
    {
        if (disposing)
        {
            if (CancelTokenSource != null)
            {
                CancelTokenSource.Cancel();
                CancelTokenSource.Dispose();
                CancelTokenSource = null;
            }
        }
    }

    /// <summary>
    /// 
    /// </summary>
    public void Dispose()
    {
        Dispose(true);
        GC.SuppressFinalize(this);
    }
}