using Android.App;

using Android.Runtime;

using System.Application.UI.Resx;

using System.Application.UI.ViewModels;

using System.Application.Mvvm;

using System.Diagnostics;

using System.Text;

using Xamarin.Essentials;

using System.Application.Settings;

using AndroidX.AppCompat.App;

using System.Application.Services;

using System.Application.Services.Implementation;

using System.Windows.Input;

using System.Collections.Generic;

using System.Reactive.Disposables;

#if __XAMARIN_FORMS__

using Xamarin.Forms;

#endif

//#if DEBUG

//using Square.LeakCanary;

//#endif

#if __XAMARIN_FORMS__

using ImageCircle.Forms.Plugin.Droid;

using XFApplication = Xamarin.Forms.Application;

#endif

using AppTheme = System.Application.Models.AppTheme;

using XEAppTheme = Xamarin.Essentials.AppTheme;

using XEFileProvider = Xamarin.Essentials.FileProvider;

using XEPlatform = Xamarin.Essentials.Platform;

using XEVersionTracking = Xamarin.Essentials.VersionTracking;

namespace System.Application.UI

{

[Register(JavaPackageConstants.UI + nameof(MainApplication))]

[Application(

Label = "@string/app_name",

Theme = "@style/MainTheme2",

Icon = "@mipmap/ic_launcher",

RoundIcon = "@mipmap/ic_launcher_round")]

public sealed partial class MainApplication

{

public static MainApplication Instance => Context is MainApplication app ? app : throw new ArgumentNullException(nameof(app));

public MainApplication(IntPtr javaReference, JniHandleOwnership transfer) : base(javaReference, transfer)

{

#if __XAMARIN_FORMS__

// https://github.com/xamarin/Xamarin.Forms/blob/release-5.0.0-sr7/Xamarin.Forms.Platform.Android/Resources/Layout/RootLayout.axml

// https://github.com/xamarin/Xamarin.Forms/blob/release-5.0.0-sr7/Xamarin.Forms.Platform.Android/Renderers/ShellSectionRenderer.cs

// 替换 RootLayout.axml 中的 Toolbar 修复一些样式问题，更换 ShellSectionRenderer 类会导致子页面无法加载，或许需要继承自，但只能通过反射修改 layout

Xamarin.Forms.Platform.Android.Resource.Layout.RootLayout = Resource.Layout.xf_root_layout;

#endif

//#if NET6_0_OR_GREATER

// Microsoft.Net.Http.Headers.DateTimeFormatterPatch.Init();

//#endif

}

//#if DEBUG

//RefWatcher? _refWatcher;

//void SetupLeakCanary()

//{

// // “A small leak will sink a great ship.” - Benjamin Franklin

// if (LeakCanaryXamarin.IsInAnalyzerProcess(this))

// {

// // This process is dedicated to LeakCanary for heap analysis.

// // You should not init your app in this process.

// return;

// }

// _refWatcher = LeakCanaryXamarin.Install(this);

//}

//#endif

public override void OnCreate()

{

base.OnCreate();

#if SHADOWSOCKS

Shadowsocks.Core.Instance.Init(this);

#endif

//#if DEBUG

// //SetupLeakCanary();

//#endif

const bool isTrace = true;

bool GetIsMainProcess()

{

// 注意：进程名可以自定义，默认是包名，如果自定义了主进程名，这里就有误，所以不要自定义主进程名！

var name = this.GetCurrentProcessName();

return name == PackageName;

}

IsMainProcess = GetIsMainProcess();

if (isTrace) StartWatchTrace.Record("IsMainProcess");

OnCreateAppExecuting(isTrace);

XEFileProvider.TemporaryLocation = FileProviderLocation.Internal;

XEPlatform.Init(this); // 初始化 Xamarin.Essentials.Platform.Init

XEPlatform.ActivityStateChanged += OnActivityStateChanged;

if (isTrace) StartWatchTrace.Record("Essentials");

OnCreateAppExecuted(this, isTrace: isTrace);

var level = DILevel.Min;

if (IsMainProcess) level = DILevel.MainProcess;

IApplication.IProgramHost host = this;

host.ConfigureServices(level);

if (isTrace) StartWatchTrace.Record("Startup");

if (IsMainProcess)

{

XEVersionTracking.Track();

if (isTrace) StartWatchTrace.Record("VersionTracking");

if (XEVersionTracking.IsFirstLaunchForCurrentVersion)

{

// 当前版本第一次启动时，清除存放升级包缓存文件夹的目录

IApplicationUpdateService.ClearAllPackCacheDir();

if (isTrace) StartWatchTrace.Record("ClearAllPackCacheDir");

}

}

host.OnStartup();

if (isTrace) StartWatchTrace.Record("OnStartup");

if (IsMainProcess)

{

var vmService = IViewModelManager.Instance;

vmService.InitViewModels();

if (isTrace) StartWatchTrace.Record("ViewModels");

#if __XAMARIN_FORMS__

Forms.Init(this, null);

FormsMaterial.Init(this, null);

ImageCircleRenderer.Init();

if (isTrace) StartWatchTrace.Record("XF");

_Current = new(RealTheme);

if (isTrace) StartWatchTrace.Record("XFApp");

#endif

vmService.MainWindow.Initialize();

}

StartupTrack = StartWatchTrace.ToString();

#if DEBUG

Log.Warn("Application", $"OnCreate Complete({StartWatchTrace.ElapsedMilliseconds}ms");

#endif

}

static readonly HashSet<Android.App.Activity> activities = new();

public static IReadOnlyCollection<Android.App.Activity> Activities => activities;

void OnActivityStateChanged(object? sender, ActivityStateChangedEventArgs e)

{

switch (e.State)

{

case ActivityState.Created:

activities.Add(e.Activity);

break;

case ActivityState.Resumed:

break;

case ActivityState.Paused:

break;

case ActivityState.Destroyed:

activities.Remove(e.Activity);

break;

case ActivityState.SaveInstanceState:

break;

case ActivityState.Started:

break;

case ActivityState.Stopped:

break;

}

}

#if __XAMARIN_FORMS__

static App? _Current;

public static App Current => _Current ??

throw new NullReferenceException("XFApplication Create in main process only.");

#endif

public static string? StartupTrack { get; private set; }

const AppTheme _DefaultActualTheme = AppTheme.Light;

AppTheme IApplication.DefaultActualTheme => _DefaultActualTheme;

//public bool IsRuntimeSwitchXFAppTheme { get; set; } = true;

#region AppTheme

public new AppTheme Theme

{

get => AppCompatDelegate.DefaultNightMode switch

{

AppCompatDelegate.ModeNightNo => AppTheme.Light,

AppCompatDelegate.ModeNightYes => AppTheme.Dark,

_ => AppTheme.FollowingSystem,

};

set

{

int defaultNightMode;

#if __XAMARIN_FORMS__

OSAppTheme theme;

#endif

switch (value)

{

case AppTheme.Light:

defaultNightMode = AppCompatDelegate.ModeNightNo;

#if __XAMARIN_FORMS__

theme = OSAppTheme.Light;

#endif

break;

case AppTheme.Dark:

defaultNightMode = AppCompatDelegate.ModeNightYes;

#if __XAMARIN_FORMS__

theme = OSAppTheme.Dark;

#endif

break;

case AppTheme.FollowingSystem:

defaultNightMode = AppCompatDelegate.ModeNightFollowSystem;

#if __XAMARIN_FORMS__

theme = AppInfo.RequestedTheme switch

{

XEAppTheme.Light => OSAppTheme.Light,

XEAppTheme.Dark => OSAppTheme.Dark,

_ => OSAppTheme.Unspecified,

};

#endif

break;

default:

return;

}

#if __XAMARIN_FORMS__

if (IsRuntimeSwitchXFAppTheme && XFApplication.Current is App app)

{

app.AppTheme = theme;

}

#endif

AppCompatDelegate.DefaultNightMode = defaultNightMode;

}

}

AppTheme ActualThemeByFollowingSystem => DarkModeUtil.IsDarkMode(this) ? AppTheme.Dark : AppTheme.Light;

AppTheme IApplication.GetActualThemeByFollowingSystem() => ActualThemeByFollowingSystem;

public AppTheme RealTheme

{

get

{

var value = Theme;

return value switch

{

AppTheme.Light or AppTheme.Dark => value,

_ => ActualThemeByFollowingSystem,

};

}

}

#endregion

public static async void ShowUnderConstructionTips() => await MessageBox.ShowAsync(AppResources.UnderConstruction);

bool IApplication.HasActiveWindow() => XEPlatform.CurrentActivity.HasValue();

#region Compat

void IApplication.SetThemeNotChangeValue(AppTheme value) => Theme = value;

object IApplication.CurrentPlatformUIHost => XEPlatform.CurrentActivity;

readonly Dictionary<string, ICommand> _NotifyIconMenus = new();

IReadOnlyDictionary<string, ICommand> IApplication.NotifyIconMenus => _NotifyIconMenus;

readonly CompositeDisposable compositeDisposable = new();

CompositeDisposable IApplication.CompositeDisposable => compositeDisposable;

ICollection<IDisposable> IDisposableHolder.CompositeDisposable => compositeDisposable;

#endregion

/// <inheritdoc cref="IApplication.InitSettingSubscribe"/>

void PlatformInitSettingSubscribe()

{

((IApplication)this).InitSettingSubscribe();

}

void IApplication.PlatformInitSettingSubscribe() => PlatformInitSettingSubscribe();

}

}