using System.Text.Json;
using XFEEDToolBox.Controls;
using XFEEDToolBox.Core.Galaxy;
using XFEEDToolBox.Core.Models;

namespace XFEEDToolBox;

public partial class App
{
    private static async Task<object> RunGalaxyFrameFadeProbeAsync(string directory,IReadOnlyList<GalacticSystem> recorded)
    {
        static void Require(bool value,string message){if(!value)throw new InvalidOperationException(message);}
        var actual=recorded.First(s=>s.SystemAddress is >0&&((ulong)s.SystemAddress.Value&7)==5);
        var origin=new Coordinates(49985,40985,24105);
        var cell=GalaxyCellQueryPlan.CellAddress((ulong)actual.SystemAddress!.Value);
        var bounds=GalaxyOriginalCatalogueLod.CellBounds(cell,origin);
        var sign=actual.Position.Z-bounds.Minimum.Z>=bounds.Maximum.Z-actual.Position.Z?1:-1;
        var focus=new Coordinates(actual.Position.X,actual.Position.Y,actual.Position.Z-sign*64);
        // Keep the captured star and its position untouched. Only the camera,
        // descriptor, timing and classification flags are controlled fixtures.
        var appearance=new GalaxyOriginalStellarAppearance(0xffe0b070,null,null,1,4,0,.05f,false)
        {NavRouteMembership=false,NavRouteMembershipMode=0,NavRouteViewMode=0};
        var target=actual with{OriginalAppearance=appearance};
        GalaxyOriginalPointOverrides Flags(long generation,bool member=false,bool known=true,IEnumerable<GalaxyOriginalPointOverride>? overrides=null)=>
            new(Environment.ProcessId,generation,0,0,true,known,overrides??[],member?[actual.SystemAddress!.Value]:[]);
        var descriptor=GalaxyOriginalCatalogueLod.Create(focus,1,32,.001,1,0);
        Require(descriptor.IntersectsCell(cell,origin),"The actual recorded frame-fade target is outside the controlled whole cell.");
        var selection=new GalaxyCatalogueSelection(descriptor,origin)
        {OriginalViewMode=0,SmallMode=false,NavRouteMembershipMode=0,NavRouteViewMode=0,PointOverrides=Flags(1)};
        var previous=MainWindow.Content;var host=new Grid();var map=new GalaxyMapView();host.Children.Add(map);MainWindow.Content=host;
        async Task Save(string name)
        {
            map.RenderNowForProbe();
            using(await map.FreezeForXamlProbeAsync())await CaptureRefinementElementAsync(host,Path.Combine(directory,name+".png"));
        }
        try
        {
            map.UseManualOriginalFrameClockForProbe();
            map.Filter=GalaxyMapFilter.Default with{Mode=GalaxyMapMode.Map,Values=null,ShowBackground=false,ShowGrid=false,
                ShowLinks=false,ShowRoute=false,ShowConstellations=false,ShowCurrentTradeFlows=false,ShowHistoricalTradeFlows=false,
                ShowRegionNames=false,ShowNebulaNames=false,ShowGalacticZonesPlane=false,ShowGalacticZoneNames=false};
            await Task.Delay(180);map.SetCameraPoseForProbe(new(focus,sign>0?0:Math.PI,0,80));
            map.Systems=[target];map.CatalogueSelection=selection;map.RenderNowForProbe();
            Require(map.FrameFadeTransitionForProbe==0&&map.VisibleStars==0&&map.VisibleNameLabels==0&&map.FrameFadedStarsForProbe==1,
                "The initial original ellipsoid did not hide the controlled non-member model and label.");
            map.SelectAt(map.ProjectForProbe(target.Position));Require(map.Selection is null,"The fully faded star retained a hit.");
            await Save("frame-fade-initial");
            map.AdvanceOriginalFrameFadeForProbe(1d/60,180);map.RenderNowForProbe();
            var transition=map.FrameFadeTransitionForProbe;
            Require(transition>1&&map.VisibleStars==1&&map.VisibleNameLabels==1,"The recovered input clock did not reveal the actual recorded star.");
            await Save("frame-fade-settled");
            map.CatalogueSelection=selection with{OriginalViewMode=1};map.AdvanceOriginalFrameFadeForProbe(1d/60,1);map.RenderNowForProbe();
            Require(map.FrameFadeTransitionForProbe==1&&map.VisibleStars==0,"The decreasing-to-one branch did not retain the original ellipsoid.");
            map.Systems=[target with{OriginalAppearance=appearance with{NavRouteMembership=true}}];map.RenderNowForProbe();
            map.CatalogueSelection=selection with{OriginalViewMode=1,PointOverrides=Flags(2,true)};map.RenderNowForProbe();
            Require(map.VisibleStars==1,"Original NavRoute membership failed to apply its separate minimum alpha.");
            await Save("frame-fade-member");
            var extra=new GalaxyOriginalPointOverride(actual.SystemAddress!.Value,1,false,false,actual.Position,actual.Name,actual.StarClass,appearance);
            var outside=GalaxyOriginalCatalogueLod.Create(new(actual.Position.X+10000,actual.Position.Y,actual.Position.Z),1,32,.001,1,0);
            Require(!outside.IntersectsCell(cell,origin),"The supplemental-object fixture still belongs to an ordinary cell.");
            var forced=selection with{Descriptor=outside,OriginalViewMode=1,PointOverrides=Flags(4,known:false,overrides:[extra])};
            Require(forced.OriginalSize(target)==0,"D50 Extra floor was incorrectly applied to the independent primary size.");
            map.SetCameraPoseForProbe(new(focus,sign>0?0:Math.PI,0,800));map.CatalogueSelection=forced;map.Systems=[target];
            map.AdvanceOriginalFrameFadeForProbe(1d/60,1);map.RenderNowForProbe();
            Require(map.VisibleStars==1&&map.VisibleNameLabels==1,"Published D50 presence with farFade=false was lost outside ordinary cells or beyond the far-fade band.");
            await Save("frame-fade-d50-forced");
            map.CatalogueSelection=forced with{PointOverrides=Flags(5,known:false,overrides:[extra with{FarFade=true}])};map.RenderNowForProbe();
            Require(map.VisibleStars==0&&map.VisibleNameLabels==0,"D50 farFade=true did not hide the same recorded point beyond700ly.");
            map.SelectAt(map.ProjectForProbe(target.Position));Require(map.Selection is null,"The fully faded D50 point retained a hit.");
            await Save("frame-fade-d50-far-hidden");
            map.SetCameraPoseForProbe(new(focus,sign>0?0:Math.PI,0,80));
            map.Systems=[target with{OriginalAppearance=appearance with{NavRouteMembership=null}}];map.RenderNowForProbe();
            map.CatalogueSelection=selection with{OriginalViewMode=1,PointOverrides=Flags(3,known:false)};map.RenderNowForProbe();
            Require(map.VisibleStars==1,"Unknown membership was incorrectly classified as a non-member.");
            map.Filter=map.Filter with{Values=new HashSet<string>(),IncludeUnknown=false};map.RenderNowForProbe();
            Require(map.VisibleStars==0&&map.VisibleNameLabels==0,"Frame flags bypassed the empty strict query.");
            map.SelectAt(map.ProjectForProbe(target.Position));Require(map.Selection is null,"The strict hidden star retained a hit.");
            await Save("frame-fade-empty");
            map.CatalogueSelection=selection;map.Systems=[target];map.Filter=map.Filter with{Mode=GalaxyMapMode.Realistic,Values=null};
            map.AdvanceOriginalFrameFadeForProbe(1d/60,180);map.RenderNowForProbe();
            Require(map.VisibleStars==0,"Known original size zero was replaced by a fallback size.");
            map.CatalogueSelection=selection with{SmallMode=true};map.RenderNowForProbe();
            Require(map.VisibleStars==1,"Current small-mode selection failed to use the cached original small size.");
            var result=new{actual.Name,actual.SystemAddress,actual.Position,cameraAndDescriptorExplicitFixture=true,
                appearanceAndMembershipExplicitFixture=true,generatedCatalogueCoordinates=false,gameAccess=false,
                initialTransition=0,settledTransition=transition,clockStepSeconds=1d/60,clockSteps=180,
                initialModelLabelAndHitHidden=true,settledActualStarVisible=true,navRouteMinimumIndependent=true,
                d50PublishedPresenceForcesBeyondOrdinaryCells=true,d50ConsumedPendingRemainsPresent=true,
                d50FarFadeControlsSameRecordedPoint=true,d50MinimumExtraNotAppliedToPrimarySize=true,
                unknownMembershipNotAssumedFalse=true,strictEmptyNoModelLabelOrHit=true,
                knownZeroOriginalSizeHidden=true,currentSmallModeUsesCachedRawSize=true,liveSourceFlagsConfirmed=false};
            await File.WriteAllTextAsync(Path.Combine(directory,"frame-fade-probe.json"),JsonSerializer.Serialize(result,new JsonSerializerOptions{WriteIndented=true}));
            return result;
        }
        finally{map.SuspendPage();MainWindow.Content=previous;}
    }
}