namespace LibCpp2IL.BinaryStructures;

public class Il2CppCodeGenModule : ReadableClass
{
    public ulong moduleName; //pointer
    public long methodPointerCount; //ulong
    public ulong methodPointers; //pointer

    //Present in v27.1 and v24.5, but not v27.0
    [Version(Min = 27.1f)] [Version(Min = 24.5f, Max = 24.5f)]
    public long adjustorThunkCount;

    [Version(Min = 27.1f)] [Version(Min = 24.5f, Max = 24.5f)]
    public ulong adjustorThunks; //Pointer

    [Version(Max = 108)] public ulong invokerIndices; //ulong
    public ulong reversePInvokeWrapperCount; //ulong
    public ulong reversePInvokeWrapperIndices;

    [Version(Max = 108)] public long rgctxRangesCount;
    [Version(Max = 108)] public ulong pRgctxRanges;

    [Version(Max = 108)] public long rgctxsCount;
    [Version(Max = 108)] public ulong rgctxs;
    public ulong debuggerMetadata;

    [Version(Min = 27, Max = 27.9f)] public ulong customAttributeCacheGenerator; //Removed in v29
    [Version(Min = 27)] public ulong moduleInitializer;
    [Version(Min = 27, Max = 108)] public ulong staticConstructorTypeIndices;
    [Version(Min = 27)] public ulong metadataRegistration; //Per-assembly mode only
    [Version(Min = 27)] public ulong codeRegistration; //Per-assembly mode only.

    private string? _cachedName;

    public string Name
    {
        get
        {
            if (_cachedName == null)
            {
                var binary = OwningContext.Binary;
                _cachedName = binary.ReadStringToNull(binary.MapVirtualAddressToRaw(moduleName));
            }

            return _cachedName!;
        }
    }

    public Il2CppTokenRangePair[] RGCTXRanges => OwningContext.Binary.GetRgctxRangePairsForModule(this);

    public override void Read(ClassReadingBinaryReader reader)
    {
        moduleName = reader.ReadNUint();
        methodPointerCount = reader.ReadNInt();
        methodPointers = reader.ReadNUint();

        if (IsAtLeast(24.5f) && IsNot(27))
        {
            adjustorThunkCount = reader.ReadNInt();
            adjustorThunks = reader.ReadNUint();
        }

        if(IsLessThan(108))
            invokerIndices = reader.ReadNUint();
        
        reversePInvokeWrapperCount = reader.ReadNUint();
        reversePInvokeWrapperIndices = reader.ReadNUint();

        if (IsLessThan(108))
        {
            rgctxRangesCount = reader.ReadNInt();
            pRgctxRanges = reader.ReadNUint();
            
            rgctxsCount = reader.ReadNInt();
            rgctxs = reader.ReadNUint();
        }
        
        debuggerMetadata = reader.ReadNUint();

        if (IsAtLeast(27f))
        {
            if (IsLessThan(29f))
                customAttributeCacheGenerator = reader.ReadNUint();

            moduleInitializer = reader.ReadNUint();
            
            if(IsLessThan(108))
                staticConstructorTypeIndices = reader.ReadNUint();
            
            metadataRegistration = reader.ReadNUint();
            codeRegistration = reader.ReadNUint();
        }
    }
}