/// <summary>
    /// 包含预设的启动节点。
    /// </summary>
    public class StartupNodes
    {
        /// <summary>
        /// 基础服务（日志、异常处理、容器、生命周期管理等）请在此节点之前启动，其他业务请在此之后启动。
        /// </summary>
        public const string Foundation = "Foundation";

        /// <summary>
        /// 需要在任何一个 Window 创建之前启动的任务请在此节点之前。
        /// 此节点之后将开始启动 UI。
        /// </summary>
        public const string CoreUI = "CoreUI";

        /// <summary>
        /// 需要在主 <see cref="Window"/> 创建之后启动的任务请在此节点之后。
        /// 此节点完成则代表主要 UI 已经初始化完毕（但不一定已显示）。
        /// </summary>
        public const string UI = "UI";

        /// <summary>
        /// 应用程序已完成启动。如果应该显示一个窗口，则此窗口已布局、渲染完毕，对用户完全可见，可开始交互。
        /// 不被其他业务依赖的模块可在此节点之后启动。
        /// </summary>
        public const string AppReady = "AppReady";

        /// <summary>
        /// 任何不关心何时启动的启动任务应该设定为在此节点之前完成。
        /// </summary>
        public const string StartupCompleted = "StartupCompleted";
    }

    /// <summary>
    /// 和项目关联的日志
    /// </summary>
    public class StartupLogger : StartupLoggerBase
    {
        public void LogInfo(string message)
        {
            Debug.WriteLine(message);
        }

        public override void ReportResult(IReadOnlyList<IStartupTaskWrapper> wrappers)
        {
            var stringBuilder = new StringBuilder();
            foreach (var keyValuePair in MilestoneDictionary)
            {
                stringBuilder.AppendLine($"{keyValuePair.Key} - [{keyValuePair.Value.threadName}] Start:{keyValuePair.Value.start} Elapsed:{keyValuePair.Value.elapsed}");
            }

            Debug.WriteLine(stringBuilder.ToString());
        }
    }

    public class StartupContext : IStartupContext
    {
        public StartupContext(IStartupContext startupContext, CommandLine commandLine, StartupLogger logger, FileConfigurationRepo configuration, IAppConfigurator configs)
        {
            _startupContext = startupContext;
            Logger = logger;
            Configuration = configuration;
            Configs = configs;
            CommandLine = commandLine;
            CommandLineOptions = CommandLine.As<Options>();
        }

        public StartupLogger Logger { get; }

        public CommandLine CommandLine { get; }

        public Options CommandLineOptions { get; }

        public FileConfigurationRepo Configuration { get; }

        public IAppConfigurator Configs { get; }

        public Task<string> ReadCacheAsync(string key, string @default = "")
        {
            return Configuration.TryReadAsync(key, @default);
        }

        private readonly IStartupContext _startupContext;
        public Task WaitStartupTaskAsync(string startupKey)
        {
            return _startupContext.WaitStartupTaskAsync(startupKey);
        }
    }

    /// <summary>
    /// 表示一个和当前业务强相关的启动任务
    /// </summary>
    public class StartupTask : StartupTaskBase
    {
        protected sealed override Task RunAsync(IStartupContext context)
        {
            return RunAsync((StartupContext) context);
        }

        protected virtual Task RunAsync(StartupContext context)
        {
            return CompletedTask;
        }
    }

    /// <summary>
    /// 和项目关联的启动管理器，用来注入业务相关的逻辑
    /// </summary>
    public class StartupManager : StartupManagerBase
    {
        public StartupManager(CommandLine commandLine, FileConfigurationRepo configuration, Func<Exception, Task> fastFailAction, IMainThreadDispatcher mainThreadDispatcher) : base(new StartupLogger(), fastFailAction, mainThreadDispatcher)
        {
            var appConfigurator = configuration.CreateAppConfigurator();
            Context = new StartupContext(StartupContext, commandLine, (StartupLogger) Logger, configuration, appConfigurator);
        }

        private StartupContext Context { get; }

        protected override Task<string> ExecuteStartupTaskAsync(StartupTaskBase startupTask, IStartupContext context, bool uiOnly)
        {
            return base.ExecuteStartupTaskAsync(startupTask, Context, uiOnly);
        }
    }

    class MainThreadDispatcher : IMainThreadDispatcher
    {
        public async Task InvokeAsync(Action action)
        {
            await Application.Current.Dispatcher.InvokeAsync(action);
        }
    }

        [STAThread]
        static void Main(string[] args)
        {
            var commandLine = CommandLine.Parse(args);

            var app = new App();

            //开始启动任务
            StartStartupTasks(commandLine);

            app.Run();
        }

        private static void StartStartupTasks(CommandLine commandLine)
        {
            Task.Run(() =>
            {
            	// 1. 读取应用配置
            	// 应用将会根据配置决定启动的行为
                var configFilePath = "App.coin";
                var repo = ConfigurationFactory.FromFile(configFilePath);

                // 2. 对接预编译模块，获取启动任务项
                var assemblyMetadataExporter = new AssemblyMetadataExporter(BuildStartupAssemblies());

                // 3. 创建启动框架和跑起来
                var startupManager = new StartupManager(commandLine, repo, HandleShutdownError, new MainThreadDispatcher())
                    // 3.1 导入预设的应用启动节点，这是必要的步骤，业务方的各个启动任务项将会根据此决定启动顺序
                    .UseCriticalNodes
                    (
                        StartupNodes.Foundation,
                        StartupNodes.CoreUI,
                        StartupNodes.UI,
                        StartupNodes.AppReady,
                        StartupNodes.StartupCompleted
                    )
                    // 3.2 导出程序集的启动项
                    .AddStartupTaskMetadataCollector(() =>
                    	// 这是预编译模块收集的应用的所有的启动任务项
                        assemblyMetadataExporter.ExportStartupTasks());
                startupManager.Run();
            });
        }

[assembly: dotnetCampus.Telescope.MarkExport(typeof(WPFDemo.Api.StartupTaskFramework.StartupTask), typeof(dotnetCampus.ApplicationStartupManager.StartupTaskAttribute))]

    [StartupTask(BeforeTasks = StartupNodes.CoreUI, AfterTasks = StartupNodes.Foundation)]
    public class Foo1Startup : StartupTask
    {
        protected override Task RunAsync(StartupContext context)
        {
            context.Logger.LogInfo("Foo1 Startup");
            return base.RunAsync(context);
        }
    }

using dotnetCampus.ApplicationStartupManager;
using dotnetCampus.Telescope;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WPFDemo.Api.StartupTaskFramework;

namespace dotnetCampus.Telescope
{
    public partial class __AttributedTypesExport__ : ICompileTimeAttributedTypesExporter<StartupTask, StartupTaskAttribute>
    {
        AttributedTypeMetadata<StartupTask, StartupTaskAttribute>[] ICompileTimeAttributedTypesExporter<StartupTask, StartupTaskAttribute>.ExportAttributeTypes()
        {
            return new AttributedTypeMetadata<StartupTask, StartupTaskAttribute>[]
            {
                new AttributedTypeMetadata<StartupTask, StartupTaskAttribute>(
                    typeof(WPFDemo.Api.Startup.Foo1Startup),
                    new StartupTaskAttribute()
                    {
                        BeforeTasks = StartupNodes.CoreUI,
                        AfterTasks = StartupNodes.Foundation
                    },
                    () => new WPFDemo.Api.Startup.Foo1Startup()
                ),
            };
        }
    }
}

    IEnumerable<AttributedTypeMetadata<StartupTask, StartupTaskAttribute>> collection = AttributedTypes.FromAssembly<StartupTask, StartupTaskAttribute>(_assemblies);

using System.Reflection;

using dotnetCampus.ApplicationStartupManager;
using dotnetCampus.Telescope;

namespace WPFDemo.Api.StartupTaskFramework
{
    public class AssemblyMetadataExporter
    {
        public AssemblyMetadataExporter(Assembly[] assemblies)
        {
            _assemblies = assemblies;
        }

        public IEnumerable<StartupTaskMetadata> ExportStartupTasks()
        {
            var collection = Export<StartupTask, StartupTaskAttribute>();
            return collection.Select(x => new StartupTaskMetadata(x.RealType.Name.Replace("Startup", ""), x.CreateInstance)
            {
                Scheduler = x.Attribute.Scheduler,
                BeforeTasks = x.Attribute.BeforeTasks,
                AfterTasks = x.Attribute.AfterTasks,
                //Categories = x.Attribute.Categories,
                CriticalLevel = x.Attribute.CriticalLevel,
            });
        }

        public IEnumerable<AttributedTypeMetadata<TBaseClassOrInterface, TAttribute>> Export<TBaseClassOrInterface, TAttribute>() where TAttribute : Attribute
        {
            return AttributedTypes.FromAssembly<TBaseClassOrInterface, TAttribute>(_assemblies);
        }

        private readonly Assembly[] _assemblies;
    }
}

    class Program
    {
        private static void StartStartupTasks(CommandLine commandLine)
        {
            Task.Run(() =>
            {
                var assemblyMetadataExporter = new AssemblyMetadataExporter(BuildStartupAssemblies());

                // 忽略其他逻辑
            });
        }

        private static Assembly[] BuildStartupAssemblies()
        {
            // 初始化预编译收集的所有模块。
            return new Assembly[]
            {
                // WPFDemo.App
                typeof(Program).Assembly,
                // WPFDemo.Lib1
                typeof(Foo2Startup).Assembly,
                // WPFDemo.Api
                typeof(Foo1Startup).Assembly,
            };
        }
    }

      var assemblyMetadataExporter = new AssemblyMetadataExporter(BuildStartupAssemblies());

      var startupManager = new StartupManager(/*忽略代码*/)
        // 导出程序集的启动项
        .AddStartupTaskMetadataCollector(() => assemblyMetadataExporter.ExportStartupTasks());

      startupManager.Run();

using System.Threading.Tasks;

using dotnetCampus.ApplicationStartupManager;

using WPFDemo.Api.StartupTaskFramework;

namespace WPFDemo.App.Startup
{
    [StartupTask(BeforeTasks = StartupNodes.AppReady, AfterTasks = StartupNodes.UI, Scheduler = StartupScheduler.UIOnly)]
    internal class MainWindowStartup : StartupTask
    {
        protected override Task RunAsync(StartupContext context)
        {
            var mainWindow = new MainWindow();
            mainWindow.Show();

            return CompletedTask;
        }
    }
}

    [StartupTask(BeforeTasks = StartupNodes.AppReady, AfterTasks = "MainWindowStartup", Scheduler = StartupScheduler.UIOnly)]
    internal class BusinessStartup : StartupTask
    {
        protected override Task RunAsync(StartupContext context)
        {
            if (Application.Current.MainWindow.Content is Grid grid)
            {
                grid.Children.Add(new Button()
                {
                    HorizontalAlignment = HorizontalAlignment.Center,
                    VerticalAlignment = VerticalAlignment.Bottom,
                    Margin = new Thickness(10, 10, 10, 10),
                    Content = "Click"
                });
            }

            return CompletedTask;
        }
    }

    [StartupTask(BeforeTasks = StartupNodes.Foundation)]
    class LibStartup : StartupTask
    {
        protected override Task RunAsync(StartupContext context)
        {
            context.Logger.LogInfo("Lib Startup");
            return base.RunAsync(context);
        }
    }

    [StartupTask(BeforeTasks = StartupNodes.Foundation, AfterTasks = "LibStartup")]
    class OptionStartup : StartupTask
    {
        protected override Task RunAsync(StartupContext context)
        {
            context.Logger.LogInfo("Command " + context.CommandLineOptions.Name);

            return CompletedTask;
        }
    }

    [StartupTask(BeforeTasks = StartupNodes.CoreUI, AfterTaskList = new[] { nameof(WPFDemo.Lib1.Startup.Foo2Startup), "Foo1Startup" })]
    public class Foo3Startup : StartupTask
    {
        protected override Task RunAsync(StartupContext context)
        {
            context.Logger.LogInfo("Foo3 Startup");
            return base.RunAsync(context);
        }
    }