XFEEDToolBox

namespace XFEEDToolBox.Plugin;

internal static unsafe partial class Navigation
{
    internal sealed record GalaxyPowerTerritoryFact(int rawState,int stateIndex,int ownerInternalPowerId,float radius,float[] rawRgb,float[] linearRgb,float opacity);
    internal sealed class GalaxyPowerTerritoryContext
    {
        internal GalaxyPowerActivityContext activity=new();
        internal nuint metadata;
        internal GalaxyPowerOption[] options=[];
    }

    // Original resource86ec03... config+1C/11C/120/12C/130. All floats,
    // the .99 threshold cap, and both ED5A debug-flag RIP bindings are proven
    // in power-outer-sources/territory-constants.json. This is the raw mode1
    // geometry style, before the caller's owner/state/UI visibility masks.
    static bool GalaxyPowerTerritoryRadius(float counter,bool activityEnabled,bool minimumEnabled,float minimum,out float radius)
    {
        radius=0;
        if(!float.IsFinite(minimum)||minimum is <0 or >1||minimumEnabled&&!activityEnabled)return false;
        var value=0f;
        if(activityEnabled)
        {
            if(!float.IsFinite(counter)||counter<0)return false;
            value=counter;
            if(minimumEnabled)
            {
                var threshold=Math.Min(.99f,minimum);
                value=Math.Clamp((value-threshold)/(1-threshold),0,1);
            }
        }
        // Original3B28170 mode1: lerp(config11C,120,c)*object64.
        // Original3B27690: multiply by config12C. No camera-distance term.
        var size=(.75f+(2f-.75f)*value)*.7f;
        radius=11f*size;return float.IsFinite(radius)&&radius>0;
    }

    static bool GalaxyPowerTerritoryOverridesClear(nuint expectedImage)
        =>Read<byte>(expectedImage+0x5FDB275)==0&&Read<byte>(expectedImage+0x5FDB277)==0;

    static float GalaxyPowerGeometryLinearColour(float value)
    {
        // Exact continuous transfer6CC950, not the rounded IEC cutoff.
        const float gamma=2.4f,offset=.055f;
        var denominator=gamma-1;var raised=MathF.Pow(offset*gamma/(denominator*(1+offset)),gamma);
        return value<offset/denominator?value*(denominator/offset)*raised:MathF.Pow((value+offset)/(1+offset),gamma);
    }

    static bool GalaxyPowerTerritoryAdmissible(nuint metadata,nuint expectedImage,ulong address,out bool? allowed)
    {
        allowed=null;
        try
        {
            if(metadata<0x10000||Pointer(metadata)!=expectedImage+0x551A1B0)return false;
            if(!GalaxyFactFindHash(metadata+0xA8,address,out var node))return false;
            if(node==0&&!GalaxyFactFindHash(metadata+0xC8,address,out node))return false;
            if(node==0)return true;
            var descriptor=node+0x10;var data=Pointer(descriptor+0x30);var optional=Read<byte>(descriptor+0x1D0);
            if(optional>1)return false;
            var state=optional==0?0:Read<int>(descriptor+0x160);
            if(state<0||state>65535)return false;
            var value=data!=0&&(optional==0||state is <33 or >38 or 33 or 37);
            if(Read<ulong>(node+8)!=address||Pointer(descriptor+0x30)!=data||Read<byte>(descriptor+0x1D0)!=optional||
               optional!=0&&Read<int>(descriptor+0x160)!=state||Pointer(metadata)!=expectedImage+0x551A1B0)return false;
            allowed=value;return true;
        }
        catch{return false;}
    }

    static bool CopyGalaxyPowerTerritoryStyle(GalaxyPowerTerritoryContext context,ulong address,
        bool activityEnabled,bool allPowers,int actualInternalId,int actionId,bool minimumEnabled,float minimum,out GalaxyPowerTerritoryFact? result)
    {
        result=null;var source=context.activity;
        if(address==0||address>=0x80000000000000UL||context.options.Length is <1 or >128||
           context.options.Length!=source.optionCount||!float.IsFinite(minimum)||minimum is <0 or >1||minimumEnabled&&!activityEnabled)return false;
        try
        {
            if(!GalaxyPowerActivitySource(source.service,source.expectedImage,source.owner)||!GalaxyPowerTerritoryOverridesClear(source.expectedImage)||
               !GalaxyPowerActivityFind(source.service+0x3C0,address,-1,0x180,16,out var node))return false;
            if(node==0)return true;
            var metadata=node+0x10;var ownerIndex=Read<ulong>(metadata);var state=Read<int>(metadata+0xC);
            if(state==0)return true; // Original geometry emits no unoccupied bubble.
            if(state<0||state>65535||ownerIndex>=(ulong)context.options.Length)return false;
            var special=state is 3 or 4?Read<byte>(metadata+0x11):(byte)0;if(special>1)return false;
            var stateIndex=state switch{1=>4,2=>5,3 or 4=>special!=0?7:6,_=>0};
            if(!GalaxyPowerTerritoryAdmissible(context.metadata,source.expectedImage,address,out var allowed))return false;
            if(allowed!=true)return true;
            var counter=0f;
            if(activityEnabled)
            {
                var selectedIndex=-1;
                if(allPowers?actualInternalId!=-1:!source.indices.TryGetValue(actualInternalId,out selectedIndex))return false;
                if(!CopyGalaxyPowerActivityCounter(source.service,source.expectedImage,source.owner,address,allPowers,selectedIndex,
                    source.optionCount,actionId,out var observed)||observed is null)return true;
                counter=observed.Value;
                if(minimumEnabled&&counter<minimum)return true;
            }
            if(!GalaxyPowerTerritoryRadius(counter,activityEnabled,minimumEnabled,minimum,out var radius))return false;
            var option=context.options[(int)ownerIndex];
            if(option.index!=(int)ownerIndex||option.internalPowerId<0||!float.IsFinite(option.rawRed)||
               !float.IsFinite(option.rawGreen)||!float.IsFinite(option.rawBlue))return false;
            if(!GalaxyPowerActivitySource(source.service,source.expectedImage,source.owner)||!GalaxyPowerTerritoryOverridesClear(source.expectedImage)||
               Read<ulong>(node)!=address||Read<ulong>(metadata)!=ownerIndex||Read<int>(metadata+0xC)!=state||
               state is 3 or 4&&Read<byte>(metadata+0x11)!=special)return false;
            // Ordinary getColour3B265D0 uses raw RGB (dual+0C). Geometry
            // producer3B27690 uses the FIRST/linear triplet from3B27100.
            // Preserve both channels and HDR floats rather than conflating
            // display RGB with original material inputs. Debug alpha is off.
            var raw=new[]{option.rawRed,option.rawGreen,option.rawBlue};var linear=raw.Select(GalaxyPowerGeometryLinearColour).ToArray();
            if(linear.Any(value=>!float.IsFinite(value)))return false;
            result=new(state,stateIndex,option.internalPowerId,radius,raw,linear,.15f);return true;
        }
        catch{return false;}
    }

    static bool TryCreateGalaxyPowerTerritoryContext(Snapshot frame,GalaxyServices services,out GalaxyPowerTerritoryContext result)
    {
        result=new();
        if(!TryCreateGalaxyPowerActivityContext(frame,services,out var source))return false;
        try
        {
            if(!GalaxyPowerTerritoryOverridesClear(source.expectedImage)||
               !CopyGalaxyPowerOptions(source.service-0x58,source.owner,source.expectedImage,out var options)||options.Length!=source.optionCount)return false;
            var metadata=RegisteredComponent(services.registry,Read<uint>(image+0x5F05C24));
            if(metadata<0x10000||Pointer(metadata)!=image+0x551A1B0)return false;
            result=new(){activity=source,metadata=metadata,options=options};return true;
        }
        catch{return false;}
    }

    static bool TryReadGalaxyPowerTerritoryStyle(GalaxyPowerTerritoryContext context,ulong address,
        bool activityEnabled,bool allPowers,int actualInternalId,int actionId,bool minimumEnabled,float minimum,out GalaxyPowerTerritoryFact? result)
    {
        result=null;var source=context.activity;
        if(!Enabled()||!inGame||source.thread==0||source.thread!=owningThread||GetCurrentThreadId()!=source.thread||
           GetTickCount64()-source.tick>500||source.expectedImage!=image)return false;
        var frame=Current();
        if(!frame.valid||frame.entity!=source.entity||(frame.referenceWorld&0x007FFFFFFFFFFFFFUL)!=source.currentSystem)return false;
        return CopyGalaxyPowerTerritoryStyle(context,address,activityEnabled,allPowers,actualInternalId,actionId,minimumEnabled,minimum,out result);
    }
}