using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Text.Json;
using XFEEDToolBox.Plugin;

var results=Enumerable.Range(0,8).Select(_=>Navigation.RunServiceFixture()).ToArray();
var report=new{sourceLinked=true,gameAccess=false,gameCalls=0,nativeAotBuilt=false,expected=255,results,passed=results.All(value=>value==255)};
var directory=Path.GetFullPath("artifacts/galaxy-service-facts-probe");Directory.CreateDirectory(directory);
File.WriteAllText(Path.Combine(directory,"result.json"),JsonSerializer.Serialize(report,new JsonSerializerOptions{WriteIndented=true}));
Console.WriteLine(JsonSerializer.Serialize(report));if(!report.passed)Environment.ExitCode=1;

namespace XFEEDToolBox.Plugin
{
    // A bounded own-allocation memory host, not the game Platform. Production
    // Copy/Mask/Source and the own-allocation fixture are linked unchanged.
    internal static unsafe class Platform
    {
        private static readonly Dictionary<nuint,nuint> allocations=[];
        internal static nuint Allocate(nuint size)
        {var value=(nuint)NativeMemory.AllocZeroed(size);if(value!=0)allocations[value]=size;return value;}
        internal static void Free(nuint address){allocations.Remove(address);NativeMemory.Free((void*)address);}
        internal static byte[] ReadBytes(nuint address,int length)
        {
            if(!allocations.Any(pair=>address>=pair.Key&&address-pair.Key<=pair.Value&&(nuint)length<=pair.Value-(address-pair.Key)))throw new InvalidDataException("Outside owned fixture memory");
            return new ReadOnlySpan<byte>((void*)address,length).ToArray();
        }
        internal static void Write<T>(nuint address,T value)where T:unmanaged
        {ReadBytes(address,Unsafe.SizeOf<T>());Unsafe.Write((void*)address,value);}
    }
    internal static unsafe partial class Navigation
    {
        internal static uint RunServiceFixture()=>GalaxyServiceFactsSelfTest();
        static T Read<T>(nuint address)where T:unmanaged=>MemoryMarshal.Read<T>(Platform.ReadBytes(address,Unsafe.SizeOf<T>()));
        static nuint Pointer(nuint address)=>Read<nuint>(address);
        static void Write<T>(nuint address,T value)where T:unmanaged=>Platform.Write(address,value);
        static ulong GalaxyFactHash(ulong address)
        {
            unchecked{var hash=address*0x40000+~address;hash=((hash>>31)^hash)*0x15;hash=((hash>>11)^hash)*0x41;return(uint)(hash>>22)^(uint)hash;}
        }
        // Runtime entry declarations only. These guards are never exercised by
        // the copy fixture; all game-facing entry conditions remain false.
        static bool Enabled()=>false;
        static bool inGame=>false;
        static nuint image=>0;
        static uint owningThread=>0;
        static uint GetCurrentThreadId()=>0;
        static ulong GetTickCount64()=>0;
        static Snapshot Current()=>new();
        static nuint RegisteredComponent(nuint registry,uint type)=>0;
        internal sealed class Snapshot{internal bool valid=>false;internal ulong entity=>0;internal ulong referenceWorld=>0;}
        internal sealed class GalaxyFilterContext{internal nuint expectedImage=>0;internal uint thread=>0;internal ulong tick=>0;internal ulong entity=>0;internal ulong currentSystem=>0;}
    }
}