wabbajack/Wabbajack/View Models/Installers/InstallerVM.cs
2020-06-01 14:26:03 -06:00

438 lines
19 KiB
C#

using System;
using ReactiveUI;
using System.Diagnostics;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Reactive.Disposables;
using System.Reactive.Linq;
using System.Reflection;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media.Imaging;
using Wabbajack.Common;
using Wabbajack.Lib;
using ReactiveUI.Fody.Helpers;
using System.Windows.Media;
using DynamicData;
using DynamicData.Binding;
using Wabbajack.Common.StatusFeed;
using System.Reactive;
using System.Collections.Generic;
using System.Windows.Input;
using Wabbajack.Common.IO;
namespace Wabbajack
{
public class InstallerVM : ViewModel, IBackNavigatingVM, ICpuStatusVM
{
public SlideShow Slideshow { get; }
public MainWindowVM MWVM { get; }
private readonly ObservableAsPropertyHelper<ModListVM> _modList;
public ModListVM ModList => _modList.Value;
public FilePickerVM ModListLocation { get; }
[Reactive]
public ViewModel NavigateBackTarget { get; set; }
private readonly ObservableAsPropertyHelper<ISubInstallerVM> _installer;
public ISubInstallerVM Installer => _installer.Value;
private readonly ObservableAsPropertyHelper<bool> _installing;
public bool Installing => _installing.Value;
[Reactive]
public bool StartedInstallation { get; set; }
[Reactive]
public ErrorResponse? Completed { get; set; }
private readonly ObservableAsPropertyHelper<ImageSource> _image;
public ImageSource Image => _image.Value;
private readonly ObservableAsPropertyHelper<string> _titleText;
public string TitleText => _titleText.Value;
private readonly ObservableAsPropertyHelper<string> _authorText;
public string AuthorText => _authorText.Value;
private readonly ObservableAsPropertyHelper<string> _description;
public string Description => _description.Value;
private readonly ObservableAsPropertyHelper<string> _progressTitle;
public string ProgressTitle => _progressTitle.Value;
private readonly ObservableAsPropertyHelper<string> _modListName;
public string ModListName => _modListName.Value;
private readonly ObservableAsPropertyHelper<Percent> _percentCompleted;
public Percent PercentCompleted => _percentCompleted.Value;
public ObservableCollectionExtended<CPUDisplayVM> StatusList { get; } = new ObservableCollectionExtended<CPUDisplayVM>();
public ObservableCollectionExtended<IStatusMessage> Log => MWVM.Log;
private readonly ObservableAsPropertyHelper<ModManager?> _TargetManager;
public ModManager? TargetManager => _TargetManager.Value;
private readonly ObservableAsPropertyHelper<IUserIntervention> _ActiveGlobalUserIntervention;
public IUserIntervention ActiveGlobalUserIntervention => _ActiveGlobalUserIntervention.Value;
private readonly ObservableAsPropertyHelper<(int CurrentCPUs, int DesiredCPUs)> _CurrentCpuCount;
public (int CurrentCPUs, int DesiredCPUs) CurrentCpuCount => _CurrentCpuCount.Value;
private readonly ObservableAsPropertyHelper<bool> _LoadingModlist;
public bool LoadingModlist => _LoadingModlist.Value;
private readonly ObservableAsPropertyHelper<bool> _IsActive;
public bool IsActive => _IsActive.Value;
// Command properties
public ReactiveCommand<Unit, Unit> ShowManifestCommand { get; }
public ReactiveCommand<Unit, Unit> OpenReadmeCommand { get; }
public ReactiveCommand<Unit, Unit> VisitModListWebsiteCommand { get; }
public ReactiveCommand<Unit, Unit> BackCommand { get; }
public ReactiveCommand<Unit, Unit> CloseWhenCompleteCommand { get; }
public ReactiveCommand<Unit, Unit> GoToInstallCommand { get; }
public ReactiveCommand<Unit, Unit> BeginCommand { get; }
public InstallerVM(MainWindowVM mainWindowVM)
{
if (Path.GetDirectoryName(Assembly.GetEntryAssembly().Location.ToLower()) == KnownFolders.Downloads.Path.ToLower())
{
Utils.Error(new CriticalFailureIntervention(
"Wabbajack is running inside your Downloads folder. This folder is often highly monitored by antivirus software and these can often " +
"conflict with the operations Wabbajack needs to perform. Please move this executable outside of your Downloads folder and then restart the app.",
"Cannot run inside Downloads"));
}
MWVM = mainWindowVM;
ModListLocation = new FilePickerVM()
{
ExistCheckOption = FilePickerVM.CheckOptions.On,
PathType = FilePickerVM.PathTypeOptions.File,
PromptTitle = "Select a ModList to install"
};
// Swap to proper sub VM based on selected type
_installer = this.WhenAny(x => x.TargetManager)
// Delay so the initial VM swap comes in immediately, subVM comes right after
.DelayInitial(TimeSpan.FromMilliseconds(50), RxApp.MainThreadScheduler)
.Select<ModManager?, ISubInstallerVM>(type =>
{
switch (type)
{
case ModManager.MO2:
return new MO2InstallerVM(this);
default:
return null;
}
})
// Unload old VM
.Pairwise()
.Do(pair =>
{
pair.Previous?.Unload();
})
.Select(p => p.Current)
.ToGuiProperty(this, nameof(Installer));
// Load settings
MWVM.Settings.SaveSignal
.Subscribe(_ =>
{
MWVM.Settings.Installer.LastInstalledListLocation = ModListLocation.TargetPath;
})
.DisposeWith(CompositeDisposable);
_IsActive = this.ConstructIsActive(MWVM)
.ToGuiProperty(this, nameof(IsActive));
// Active path represents the path to currently have loaded
// If we're not actively showing, then "unload" the active path
var activePath = Observable.CombineLatest(
this.WhenAny(x => x.ModListLocation.TargetPath),
this.WhenAny(x => x.IsActive),
resultSelector: (path, active) => (path, active))
.Select(x =>
{
if (!x.active) return default;
return x.path;
})
// Throttle slightly so changes happen more atomically
.Throttle(TimeSpan.FromMilliseconds(50), RxApp.MainThreadScheduler)
.Replay(1)
.RefCount();
_modList = activePath
.ObserveOn(RxApp.TaskpoolScheduler)
// Convert from active path to modlist VM
.Select(modListPath =>
{
if (modListPath == default) return default;
if (!modListPath.Exists) return default;
return new ModListVM(modListPath);
})
.DisposeOld()
.ObserveOnGuiThread()
.StartWith(default(ModListVM))
.ToGuiProperty(this, nameof(ModList));
// Force GC collect when modlist changes, just to make sure we clean up any loose large items immediately
this.WhenAny(x => x.ModList)
.Delay(TimeSpan.FromMilliseconds(50), RxApp.MainThreadScheduler)
.Subscribe(x =>
{
GC.Collect();
});
_LoadingModlist = Observable.Merge(
// When active path changes, mark as loading
activePath
.Select(_ => true),
// When the resulting modlist comes in, mark it as done
this.WhenAny(x => x.ModList)
.Select(_ => false))
.ToGuiProperty(this, nameof(LoadingModlist));
_installing = this.WhenAny(x => x.Installer.ActiveInstallation)
.Select(i => i != null)
.ToGuiProperty(this, nameof(Installing));
_TargetManager = this.WhenAny(x => x.ModList)
.Select(modList => modList?.ModManager)
.ToGuiProperty(this, nameof(TargetManager));
// Add additional error check on ModList
ModListLocation.AdditionalError = this.WhenAny(x => x.ModList)
.Select<ModListVM, IErrorResponse>(modList =>
{
if (modList == null) return ErrorResponse.Fail("ModList path resulted in a null object.");
if (modList.Error != null) return ErrorResponse.Fail("ModList is corrupt", modList.Error);
return ErrorResponse.Success;
});
BackCommand = ReactiveCommand.Create(
execute: () =>
{
StartedInstallation = false;
Completed = null;
mainWindowVM.NavigateTo(mainWindowVM.ModeSelectionVM);
},
canExecute: Observable.CombineLatest(
this.WhenAny(x => x.Installing)
.Select(x => !x),
this.ConstructCanNavigateBack(),
resultSelector: (i, b) => i && b)
.ObserveOnGuiThread());
_percentCompleted = this.WhenAny(x => x.Installer.ActiveInstallation)
.StartWith(default(AInstaller))
.CombineLatest(
this.WhenAny(x => x.Completed),
(installer, completed) =>
{
if (installer == null)
{
return Observable.Return<Percent>(completed != null ? Percent.One : Percent.Zero);
}
return installer.PercentCompleted.StartWith(Percent.Zero);
})
.Switch()
.Debounce(TimeSpan.FromMilliseconds(25), RxApp.MainThreadScheduler)
.ToGuiProperty(this, nameof(PercentCompleted));
Slideshow = new SlideShow(this);
// Set display items to ModList if configuring or complete,
// or to the current slideshow data if installing
_image = Observable.CombineLatest(
this.WhenAny(x => x.ModList.Error),
this.WhenAny(x => x.ModList)
.Select(x => x?.ImageObservable ?? Observable.Return(default(BitmapImage)))
.Switch()
.StartWith(default(BitmapImage)),
this.WhenAny(x => x.Slideshow.Image)
.StartWith(default(BitmapImage)),
this.WhenAny(x => x.Installing),
this.WhenAny(x => x.LoadingModlist),
resultSelector: (err, modList, slideshow, installing, loading) =>
{
if (err != null)
{
return ResourceLinks.WabbajackErrLogo.Value;
}
if (loading) return default;
return installing ? slideshow : modList;
})
.Select<BitmapImage, ImageSource>(x => x)
.ToGuiProperty(this, nameof(Image));
_titleText = Observable.CombineLatest(
this.WhenAny(x => x.ModList)
.Select(modList => modList?.Name ?? string.Empty),
this.WhenAny(x => x.Slideshow.TargetMod.State.Name)
.StartWith(default(string)),
this.WhenAny(x => x.Installing),
resultSelector: (modList, mod, installing) => installing ? mod : modList)
.ToGuiProperty(this, nameof(TitleText));
_authorText = Observable.CombineLatest(
this.WhenAny(x => x.ModList)
.Select(modList => modList?.Author ?? string.Empty),
this.WhenAny(x => x.Slideshow.TargetMod.State.Author)
.StartWith(default(string)),
this.WhenAny(x => x.Installing),
resultSelector: (modList, mod, installing) => installing ? mod : modList)
.ToGuiProperty(this, nameof(AuthorText));
_description = Observable.CombineLatest(
this.WhenAny(x => x.ModList)
.Select(modList => modList?.Description ?? string.Empty),
this.WhenAny(x => x.Slideshow.TargetMod.State.Description)
.StartWith(default(string)),
this.WhenAny(x => x.Installing),
resultSelector: (modList, mod, installing) => installing ? mod : modList)
.ToGuiProperty(this, nameof(Description));
_modListName = Observable.CombineLatest(
this.WhenAny(x => x.ModList.Error)
.Select(x => x != null),
this.WhenAny(x => x.ModList)
.Select(x => x?.Name),
resultSelector: (err, name) =>
{
if (err) return "Corrupted Modlist";
return name;
})
.ToGuiProperty(this, nameof(ModListName));
// Define commands
ShowManifestCommand = ReactiveCommand.Create(() =>
{
new ManifestWindow(ModList.SourceModList).Show();
});
OpenReadmeCommand = ReactiveCommand.Create(
execute: () => this.ModList?.OpenReadme(),
canExecute: this.WhenAny(x => x.ModList)
.Select(modList => !string.IsNullOrEmpty(modList?.Readme))
.ObserveOnGuiThread());
VisitModListWebsiteCommand = ReactiveCommand.Create(
execute: () =>
{
Utils.OpenWebsite(ModList.Website);
return Unit.Default;
},
canExecute: this.WhenAny(x => x.ModList.Website)
.Select(x => x != null)
.ObserveOnGuiThread());
_progressTitle = this.WhenAnyValue(
x => x.Installing,
x => x.StartedInstallation,
x => x.Completed,
selector: (installing, started, completed) =>
{
if (installing)
{
return "Installing";
}
else if (started)
{
if (completed == null) return "Installing";
return completed.Value.Succeeded ? "Installed" : "Failed";
}
else
{
return "Configuring";
}
})
.ToGuiProperty(this, nameof(ProgressTitle));
UIUtils.BindCpuStatus(
this.WhenAny(x => x.Installer.ActiveInstallation)
.SelectMany(c => c?.QueueStatus ?? Observable.Empty<CPUStatus>()),
StatusList)
.DisposeWith(CompositeDisposable);
BeginCommand = ReactiveCommand.CreateFromTask(
canExecute: this.WhenAny(x => x.Installer.CanInstall)
.Switch(),
execute: async () =>
{
try
{
Utils.Log($"Starting to install {ModList.Name}");
var success = await this.Installer.Install();
Completed = ErrorResponse.Create(success);
try
{
this.ModList?.OpenReadme();
}
catch (Exception ex)
{
Utils.Error(ex);
}
}
catch (Exception ex)
{
Utils.Error(ex, $"Encountered error, can't continue");
while (ex.InnerException != null) ex = ex.InnerException;
Completed = ErrorResponse.Fail(ex);
}
});
// When sub installer begins an install, mark state variable
BeginCommand.StartingExecution()
.Subscribe(_ =>
{
StartedInstallation = true;
})
.DisposeWith(CompositeDisposable);
// Listen for user interventions, and compile a dynamic list of all unhandled ones
var activeInterventions = this.WhenAny(x => x.Installer.ActiveInstallation)
.WithLatestFrom(
this.WhenAny(x => x.Installer),
(activeInstall, installer) =>
{
if (activeInstall == null) return Observable.Empty<IChangeSet<IUserIntervention>>();
return activeInstall.LogMessages
.WhereCastable<IStatusMessage, IUserIntervention>()
.ToObservableChangeSet()
.AutoRefresh(i => i.Handled)
.Filter(i => !i.Handled)
.Transform(x => installer.InterventionConverter(x));
})
.Switch()
.AsObservableList();
// Find the top intervention /w no CPU ID to be marked as "global"
_ActiveGlobalUserIntervention = activeInterventions.Connect()
.Filter(x => x.CpuID == WorkQueue.UnassignedCpuId)
.QueryWhenChanged(query => query.FirstOrDefault())
.ToGuiProperty(this, nameof(ActiveGlobalUserIntervention));
CloseWhenCompleteCommand = ReactiveCommand.Create(
canExecute: this.WhenAny(x => x.Completed)
.Select(x => x != null),
execute: () =>
{
MWVM.ShutdownApplication();
});
GoToInstallCommand = ReactiveCommand.Create(
canExecute: Observable.CombineLatest(
this.WhenAny(x => x.Completed)
.Select(x => x != null),
this.WhenAny(x => x.Installer.SupportsAfterInstallNavigation),
resultSelector: (complete, supports) => complete && supports),
execute: () =>
{
Installer.AfterInstallNavigation();
});
_CurrentCpuCount = this.WhenAny(x => x.Installer.ActiveInstallation.Queue.CurrentCpuCount)
.Switch()
.ToGuiProperty(this, nameof(CurrentCpuCount));
}
}
}