LightSpace

using LightSpace.Storage;

IRecoveryStore store = new FileRecoveryStore(Path.Combine(
    Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "MyApp", "recovery"));
// manifestJson must be a valid recovery manifest describing these sources.
byte[] original = File.ReadAllBytes("mountains.jpg");
string key = RecoveryKeys.Hash(original);
await store.CommitAsync(new RecoveryWrite(manifestJson, [key], [new RecoveryBlob(key, original)]));
string? manifest = await store.ReadManifestAsync();
byte[]? restored = await store.ReadBlobAsync(key);

using LightSpace.Catalog;
using LightSpace.Core;

CatalogDocument catalog = CatalogSerializer.Deserialize(File.ReadAllText("catalog.json"));
var picks = new PhotoQuery(Text: "alps", MinimumRating: 3,
    Flag: PhotoFlag.Pick, Sort: PhotoSort.Rating).Execute(catalog);
var copies = new PhotoQuery { Kind = PhotoKindFilter.VirtualCopies }.Execute(catalog);
if (picks.Count > 0)
{
    var photo = picks[0];
    XmpImportResult imported = XmpSidecar.Import(File.ReadAllText("IMG_0042.xmp"), photo.State);
    foreach (var warning in imported.Warnings) Console.WriteLine(warning);
    // Interactive hosts should present warnings and apply through EditorSession.
    photo.State = imported.State;
    File.WriteAllText("IMG_0042.xmp", XmpSidecar.Export(photo.State).Xml);
}
File.WriteAllText("catalog.json", CatalogSerializer.Serialize(catalog));

using LightSpace.Core;
using LightSpace.Imaging;
using SkiaSharp;

PhotoDocument photo = PhotoCodec.Import("mountains.jpg", File.ReadAllBytes("mountains.jpg"));
using SKImage preview = PhotoCodec.Decode(photo.Original, maxDimension: 1024);
CatalogDocument samples = SamplePhotos.CreateCatalog();

using LightSpace.Core;
using LightSpace.Editing;
using LightSpace.Imaging;
using LightSpace.Rendering.Skia;
using SkiaSharp;

var photo = PhotoCodec.Import("architecture.jpg", File.ReadAllBytes("architecture.jpg"));
var session = new EditorSession(new CatalogDocument { Photos = [photo], ActivePhoto = photo.Id });
session.Edit("Correct perspective and contrast", state => state with
{
    Develop = state.Develop with
    {
        Exposure = .3f,
        Channels = new ChannelCurves
        {
            Master = new PointCurve { Points = [new(0, 0), new(.25f, .18f), new(.75f, .82f), new(1, 1)] }
        }
    },
    Geometry = new GeometrySettings { Vertical = -18, Rotate = 1.5f, ConstrainCrop = true },
    Optics = new LensCorrectionSettings(Distortion: 12, Vignetting: 8)
});
using var renderer = new PhotoRenderer();
File.WriteAllBytes("architecture-edited.jpg",
    renderer.Export(photo, SKEncodedImageFormat.Jpeg, quality: 92, maxDimension: 4096));
session.Undo(); // Original bytes remain untouched.

using LightSpace.Core;
using LightSpace.Editing;
using LightSpace.Storage;

var session = new EditorSession(catalog);
session.Changed += () => Console.WriteLine($"Revision {session.Revision}");
session.BeginGesture();
foreach (var value in new[] { .1f, .2f, .35f })
    session.Preview(state => state with { Develop = state.Develop with { Exposure = value } });
session.CommitGesture("Exposure");
session.SaveVersion("Bright");
session.SyncSelected(); // All processing; target metadata retained.
session.Undo();
session.SyncSelected(EditSettingsGroup.Light | EditSettingsGroup.ColorGrading);
var copy = session.CreateVirtualCopies([session.Active!.Id]).Single();
session.RenameVirtualCopy(copy.Id, "Warm alternative");
session.Edit("Alternative exposure", state => state with
{
    Develop = state.Develop with { Exposure = .8f }
});
session.RemoveVirtualCopies([copy.Id]);
session.Undo(); // Same copy identity/settings; original never deleted.
var persistence = new RecoveryPersistence(new FileRecoveryStore("recovery"));
using var recovery = RecoveryCoordinator.Incremental(session, persistence, initiallySaved: false);
await recovery.FlushAsync();

using LightSpace.Controls;
using LightSpace.Editing;
using LightSpace.Rendering.Skia;
using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Controls;

var session = new EditorSession(catalog);
var renderer = new PhotoRenderer();
var viewport = new PhotoViewport(session, renderer);
var exposure = new AdjustmentSlider("Exposure", -5, 5, 0, .01);
exposure.ValueChanged += value => session.Preview(s => s with { Develop = s.Develop with { Exposure = value } });
exposure.ValueCommitted += () => session.CommitGesture("Exposure");
exposure.GestureCanceled += session.CancelGesture;
var curves = new PointCurveEditor { Value = session.Active!.State.Develop.Channels };
curves.Previewed += value => session.Preview(s => s with { Develop = s.Develop with { Channels = value } });
curves.Committed += () => session.CommitGesture("RGB point curve");
curves.Canceled += session.CancelGesture;
var geometry = new GeometryEditor { Value = session.Active.State.Geometry };
geometry.Previewed += value => session.Preview(s => s with { Geometry = value });
geometry.Committed += () => session.CommitGesture("Geometry");
geometry.Canceled += session.CancelGesture;
session.ViewChanged += () =>
{
    if (session.Active is not { } active) return;
    exposure.Value = active.State.Develop.Exposure;
    curves.Value = active.State.Develop.Channels;
    geometry.Value = active.State.Geometry;
};
var inspector = new StackPanel { Width = 300, Children = { exposure, curves, geometry } };
var root = new Grid { Background = Theme.Background };
root.ColumnDefinitions.Add(new ColumnDefinition());
root.ColumnDefinitions.Add(new ColumnDefinition { Width = GridLength.Auto });
root.Children.Add(viewport);
var scroll = new ScrollViewer { Content = inspector };
Grid.SetColumn(scroll, 1); root.Children.Add(scroll);
window.Content = root;
window.Closed += (_, _) => { viewport.Dispose(); renderer.Dispose(); };

using LightSpace.Editing;
using LightSpace.Imaging;
using LightSpace.Storage;
using LightSpace.Workbench;

IWorkspaceStorage storage = new MyWorkspaceStorage(); // Host picker/export/recovery adapter.
var persistence = storage is IRecoveryStore store ? new RecoveryPersistence(store) : null;
var catalog = persistence is null ? null : await persistence.RestoreAsync();
var studio = new StudioView(new EditorSession(catalog ?? SamplePhotos.CreateCatalog()),
    storage, recoveryLoaded: catalog is not null, persistence: persistence);
window.Content = studio;
window.Closed += (_, _) => studio.Dispose();