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using System;
using System.Collections.Generic;
using System.Text;
namespace UnityDataTools.FileSystem;
public struct ExternalReference
    public string Path;
    public string Guid;
    public ExternalReferenceType Type;
public class SerializedFile : IDisposable
    Lazy<List<ExternalReference>> m_ExternalReferences;
    Lazy<ObjectInfo[]> m_Objects;
    Dictionary<IntPtr, TypeTreeNode> m_TypeTreeCache = new Dictionary<IntPtr, TypeTreeNode>();
    internal SerializedFileHandle m_Handle;
    public IReadOnlyList<ExternalReference> ExternalReferences => m_ExternalReferences.Value.AsReadOnly();
    public IReadOnlyList<ObjectInfo> Objects => Array.AsReadOnly(m_Objects.Value);
    internal SerializedFile()
        m_ExternalReferences = new Lazy<List<ExternalReference>>(GetExternalReferences);
        m_Objects = new Lazy<ObjectInfo[]>(GetObjects);
    public TypeTreeNode GetTypeTreeRoot(long objectId)
        var r = DllWrapper.GetTypeTree(m_Handle, objectId, out var typeTreeHandle);
        UnityFileSystem.HandleErrors(r);
        if (m_TypeTreeCache.TryGetValue(typeTreeHandle.Handle, out var node))
            return node;
        node = new TypeTreeNode(typeTreeHandle, 0);
        m_TypeTreeCache.Add(typeTreeHandle.Handle, node);
        return node;
    public TypeTreeNode GetRefTypeTypeTreeRoot(string className, string namespaceName, string assemblyName)
        var r = DllWrapper.GetRefTypeTypeTree(m_Handle, className, namespaceName, assemblyName, out var typeTreeHandle);
        UnityFileSystem.HandleErrors(r);
        if (m_TypeTreeCache.TryGetValue(typeTreeHandle.Handle, out var node))
            return node;
        node = new TypeTreeNode(typeTreeHandle, 0);
        m_TypeTreeCache.Add(typeTreeHandle.Handle, node);
        return node;
    public int GetVersion()
        var r = DllWrapper.GetSerializedFileVersion(m_Handle, out var version);
        UnityFileSystem.HandleErrors(r);
        return version;
    public int GetTypeTreeCount()
        var r = DllWrapper.GetTypeTreeCount(m_Handle, out var count);
        UnityFileSystem.HandleErrors(r);
        return count;
    public TypeTreeInfo GetTypeTreeInfo(int index)
        var r = DllWrapper.GetTypeTreeInfo(m_Handle, index, out var info);
        UnityFileSystem.HandleErrors(r);
        return info;
    public TypeTreeNode GetTypeTreeByIndex(int index)
        var r = DllWrapper.GetTypeTreeByIndex(m_Handle, index, out var typeTreeHandle);
        UnityFileSystem.HandleErrors(r);
        if (m_TypeTreeCache.TryGetValue(typeTreeHandle.Handle, out var node))
            return node;
        node = new TypeTreeNode(typeTreeHandle, 0);
        m_TypeTreeCache.Add(typeTreeHandle.Handle, node);
        return node;
    private List<ExternalReference> GetExternalReferences()
        var r = DllWrapper.GetExternalReferenceCount(m_Handle, out var count);
        UnityFileSystem.HandleErrors(r);
        var externalReferences = new List<ExternalReference>(count);
        var path = new StringBuilder(512);
        var guid = new StringBuilder(32);
        for (var i = 0; i < count; ++i)
            DllWrapper.GetExternalReference(m_Handle, i, path, path.Capacity, guid, out var externalReferenceType);
            UnityFileSystem.HandleErrors(r);
            externalReferences.Add(new ExternalReference() { Path = path.ToString(), Guid = guid.ToString(), Type = externalReferenceType });
        return externalReferences;
    private ObjectInfo[] GetObjects()
        var r = DllWrapper.GetObjectCount(m_Handle, out var count);
        UnityFileSystem.HandleErrors(r);
        if (count == 0)
            return null;
        var objs = new ObjectInfo[count];
        DllWrapper.GetObjectInfo(m_Handle, objs, count);
        UnityFileSystem.HandleErrors(r);
        return objs;
    public void Dispose()
        if (m_Handle != null && !m_Handle.IsInvalid)
            m_Handle.Dispose();
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