#include "MetaCoreScene/MetaCoreSceneSerializer.h"
#include "MetaCoreFoundation/MetaCoreReflection.h"
#include <nlohmann/json.hpp>
#include <fstream>
#include <iostream>
#include <sstream>

using json = nlohmann::json;

namespace MetaCore {

// 辅助方法：将 glm::vec3 序列化为 JSON 数组 [x, y, z]
static json Vec3ToJson(const glm::vec3& vec) {
    return { vec.x, vec.y, vec.z };
}

// 辅助方法：从 JSON 数组 [x, y, z] 反序列化出 glm::vec3
static glm::vec3 JsonToVec3(const json& j) {
    if (j.is_array() && j.size() >= 3) {
        return glm::vec3(j[0].get<float>(), j[1].get<float>(), j[2].get<float>());
    }
    return glm::vec3(0.0f);
}

// 辅助方法：将 MetaCoreAssetGuid 转换为 String，方便文本化存储
static std::string GuidToString(const MetaCoreAssetGuid& guid) {
    return guid.IsValid() ? guid.ToString() : "";
}

// 辅助方法：从 String 反解析为 MetaCoreAssetGuid
static MetaCoreAssetGuid StringToGuid(const std::string& str) {
    return str.empty() ? MetaCoreAssetGuid{} : MetaCoreAssetGuid::Parse(str).value_or(MetaCoreAssetGuid{});
}

static char MetaCoreHexDigit(std::byte value) {
    constexpr char digits[] = "0123456789abcdef";
    return digits[static_cast<unsigned int>(value) & 0x0F];
}

static std::string BytesToHexString(const std::vector<std::byte>& bytes) {
    std::string encoded;
    encoded.reserve(bytes.size() * 2U);
    for (std::byte byte : bytes) {
        encoded.push_back(MetaCoreHexDigit(byte >> 4));
        encoded.push_back(MetaCoreHexDigit(byte));
    }
    return encoded;
}

static int HexValue(char character) {
    if (character >= '0' && character <= '9') return character - '0';
    if (character >= 'a' && character <= 'f') return 10 + character - 'a';
    if (character >= 'A' && character <= 'F') return 10 + character - 'A';
    return -1;
}

static std::vector<std::byte> HexStringToBytes(const std::string& encoded) {
    std::vector<std::byte> bytes;
    if (encoded.size() % 2U != 0U) {
        return bytes;
    }

    bytes.reserve(encoded.size() / 2U);
    for (std::size_t index = 0; index < encoded.size(); index += 2U) {
        const int high = HexValue(encoded[index]);
        const int low = HexValue(encoded[index + 1U]);
        if (high < 0 || low < 0) {
            bytes.clear();
            return bytes;
        }
        bytes.push_back(static_cast<std::byte>((high << 4) | low));
    }
    return bytes;
}

// 辅助方法：将单个 MetaCoreGameObjectData 转换为 json 格式
static json GameObjectDataToJson(const MetaCoreGameObjectData& obj, const MetaCoreTypeRegistry& registry) {
    json objJson = json::object();
    const MetaCoreStructDescriptor* objDesc = registry.FindStruct<MetaCoreGameObjectData>();
    if (!objDesc) return objJson;

    for (const auto& objField : objDesc->Fields) {
        if (objField.Name == "Id") {
            objJson["Id"] = obj.Id;
        } else if (objField.Name == "ParentId") {
            objJson["ParentId"] = obj.ParentId;
        } else if (objField.Name == "Name") {
            objJson["Name"] = obj.Name;
        } else if (objField.Name == "Transform") {
            const MetaCoreStructDescriptor* transDesc = registry.FindStruct<MetaCoreTransformComponent>();
            if (transDesc) {
                json transJson = json::object();
                for (const auto& transField : transDesc->Fields) {
                    if (transField.Name == "Position") transJson["Position"] = Vec3ToJson(obj.Transform.Position);
                    else if (transField.Name == "RotationEulerDegrees") transJson["RotationEulerDegrees"] = Vec3ToJson(obj.Transform.RotationEulerDegrees);
                    else if (transField.Name == "Scale") transJson["Scale"] = Vec3ToJson(obj.Transform.Scale);
                }
                objJson["Transform"] = transJson;
            }
        } else if (objField.Name == "MeshRenderer" && obj.MeshRenderer.has_value()) {
            const MetaCoreStructDescriptor* meshDesc = registry.FindStruct<MetaCoreMeshRendererComponent>();
            if (meshDesc) {
                json meshJson = json::object();
                const auto& mesh = obj.MeshRenderer.value();
                for (const auto& meshField : meshDesc->Fields) {
                    if (meshField.Name == "MeshSource") meshJson["MeshSource"] = static_cast<int>(mesh.MeshSource);
                    else if (meshField.Name == "BuiltinMesh") meshJson["BuiltinMesh"] = static_cast<int>(mesh.BuiltinMesh);
                    else if (meshField.Name == "MeshAssetGuid") meshJson["MeshAssetGuid"] = GuidToString(mesh.MeshAssetGuid);
                    else if (meshField.Name == "MaterialAssetGuids") {
                        json matGuids = json::array();
                        for (const auto& guid : mesh.MaterialAssetGuids) {
                            matGuids.push_back(GuidToString(guid));
                        }
                        meshJson["MaterialAssetGuids"] = matGuids;
                    }
                    else if (meshField.Name == "SourceModelAssetGuid") meshJson["SourceModelAssetGuid"] = GuidToString(mesh.SourceModelAssetGuid);
                    else if (meshField.Name == "SourceModelPath") meshJson["SourceModelPath"] = mesh.SourceModelPath;
                    else if (meshField.Name == "SourceNodePath") meshJson["SourceNodePath"] = mesh.SourceNodePath;
                    else if (meshField.Name == "BaseColorTextureGuid") meshJson["BaseColorTextureGuid"] = GuidToString(mesh.BaseColorTextureGuid);
                    else if (meshField.Name == "MetallicRoughnessTextureGuid") meshJson["MetallicRoughnessTextureGuid"] = GuidToString(mesh.MetallicRoughnessTextureGuid);
                    else if (meshField.Name == "NormalTextureGuid") meshJson["NormalTextureGuid"] = GuidToString(mesh.NormalTextureGuid);
                    else if (meshField.Name == "EmissiveTextureGuid") meshJson["EmissiveTextureGuid"] = GuidToString(mesh.EmissiveTextureGuid);
                    else if (meshField.Name == "AoTextureGuid") meshJson["AoTextureGuid"] = GuidToString(mesh.AoTextureGuid);
                    else if (meshField.Name == "BaseColorTexturePath") meshJson["BaseColorTexturePath"] = mesh.BaseColorTexturePath;
                    else if (meshField.Name == "MetallicRoughnessTexturePath") meshJson["MetallicRoughnessTexturePath"] = mesh.MetallicRoughnessTexturePath;
                    else if (meshField.Name == "NormalTexturePath") meshJson["NormalTexturePath"] = mesh.NormalTexturePath;
                    else if (meshField.Name == "EmissiveTexturePath") meshJson["EmissiveTexturePath"] = mesh.EmissiveTexturePath;
                    else if (meshField.Name == "AoTexturePath") meshJson["AoTexturePath"] = mesh.AoTexturePath;
                    else if (meshField.Name == "DoubleSided") meshJson["DoubleSided"] = mesh.DoubleSided;
                    else if (meshField.Name == "Metallic") meshJson["Metallic"] = mesh.Metallic;
                    else if (meshField.Name == "Roughness") meshJson["Roughness"] = mesh.Roughness;
                    else if (meshField.Name == "AlphaMode") meshJson["AlphaMode"] = static_cast<int>(mesh.AlphaMode);
                    else if (meshField.Name == "AlphaCutoff") meshJson["AlphaCutoff"] = mesh.AlphaCutoff;
                    else if (meshField.Name == "EmissiveColor") meshJson["EmissiveColor"] = Vec3ToJson(mesh.EmissiveColor);
                    else if (meshField.Name == "BaseColor") meshJson["BaseColor"] = Vec3ToJson(mesh.BaseColor);
                    else if (meshField.Name == "ModelNodeIndex") meshJson["ModelNodeIndex"] = mesh.ModelNodeIndex;
                    else if (meshField.Name == "SubMeshIndex") meshJson["SubMeshIndex"] = mesh.SubMeshIndex;
                    else if (meshField.Name == "Visible") meshJson["Visible"] = mesh.Visible;
                }
                objJson["MeshRenderer"] = meshJson;
            }
        } else if (objField.Name == "Light" && obj.Light.has_value()) {
            const MetaCoreStructDescriptor* lightDesc = registry.FindStruct<MetaCoreLightComponent>();
            if (lightDesc) {
                json lightJson = json::object();
                for (const auto& lightField : lightDesc->Fields) {
                    if (lightField.Name == "Color") lightJson["Color"] = Vec3ToJson(obj.Light->Color);
                    else if (lightField.Name == "Intensity") lightJson["Intensity"] = obj.Light->Intensity;
                }
                objJson["Light"] = lightJson;
            }
        } else if (objField.Name == "Camera" && obj.Camera.has_value()) {
            const MetaCoreStructDescriptor* camDesc = registry.FindStruct<MetaCoreCameraComponent>();
            if (camDesc) {
                json camJson = json::object();
                for (const auto& camField : camDesc->Fields) {
                    if (camField.Name == "FieldOfViewDegrees") camJson["FieldOfViewDegrees"] = obj.Camera->FieldOfViewDegrees;
                    else if (camField.Name == "NearClip") camJson["NearClip"] = obj.Camera->NearClip;
                    else if (camField.Name == "FarClip") camJson["FarClip"] = obj.Camera->FarClip;
                    else if (camField.Name == "IsPrimary") camJson["IsPrimary"] = obj.Camera->IsPrimary;
                }
                objJson["Camera"] = camJson;
            }
        } else if (objField.Name == "PrefabInstance" && obj.PrefabInstance.has_value()) {
            const MetaCoreStructDescriptor* prefabDesc = registry.FindStruct<MetaCorePrefabInstanceMetadata>();
            if (prefabDesc) {
                json prefabJson = json::object();
                for (const auto& prefabField : prefabDesc->Fields) {
                    if (prefabField.Name == "PrefabAssetGuid") prefabJson["PrefabAssetGuid"] = GuidToString(obj.PrefabInstance->PrefabAssetGuid);
                    else if (prefabField.Name == "PrefabObjectId") prefabJson["PrefabObjectId"] = obj.PrefabInstance->PrefabObjectId;
                    else if (prefabField.Name == "PrefabInstanceRootId") prefabJson["PrefabInstanceRootId"] = obj.PrefabInstance->PrefabInstanceRootId;
                }
                objJson["PrefabInstance"] = prefabJson;
            }
        } else if (objField.Name == "SerializedComponents" && !obj.SerializedComponents.empty()) {
            json componentsJson = json::array();
            for (const MetaCoreSerializedComponentData& component : obj.SerializedComponents) {
                if (component.TypeId.empty() || component.Payload.empty()) {
                    continue;
                }
                componentsJson.push_back(json{
                    {"TypeId", component.TypeId},
                    {"Payload", BytesToHexString(component.Payload)}
                });
            }
            if (!componentsJson.empty()) {
                objJson["Components"] = std::move(componentsJson);
            }
        }
    }
    return objJson;
}

// 辅助方法：从 json 格式中恢复单个 MetaCoreGameObjectData
static MetaCoreGameObjectData JsonToGameObjectData(const json& objJson, const MetaCoreTypeRegistry& registry) {
    MetaCoreGameObjectData obj;
    const MetaCoreStructDescriptor* objDesc = registry.FindStruct<MetaCoreGameObjectData>();
    if (!objDesc) return obj;

    for (const auto& objField : objDesc->Fields) {
        if (objField.Name == "Id" && objJson.contains("Id")) {
            obj.Id = objJson["Id"].get<MetaCoreId>();
        } else if (objField.Name == "ParentId" && objJson.contains("ParentId")) {
            obj.ParentId = objJson["ParentId"].get<MetaCoreId>();
        } else if (objField.Name == "Name" && objJson.contains("Name")) {
            obj.Name = objJson["Name"].get<std::string>();
        } else if (objField.Name == "Transform" && objJson.contains("Transform")) {
            const auto& transJson = objJson["Transform"];
            const MetaCoreStructDescriptor* transDesc = registry.FindStruct<MetaCoreTransformComponent>();
            if (transDesc) {
                for (const auto& transField : transDesc->Fields) {
                    if (transField.Name == "Position" && transJson.contains("Position")) {
                        obj.Transform.Position = JsonToVec3(transJson["Position"]);
                    } else if (transField.Name == "RotationEulerDegrees" && transJson.contains("RotationEulerDegrees")) {
                        obj.Transform.RotationEulerDegrees = JsonToVec3(transJson["RotationEulerDegrees"]);
                    } else if (transField.Name == "Scale" && transJson.contains("Scale")) {
                        obj.Transform.Scale = JsonToVec3(transJson["Scale"]);
                    }
                }
            }
        } else if (objField.Name == "MeshRenderer" && objJson.contains("MeshRenderer")) {
            const auto& meshJson = objJson["MeshRenderer"];
            const MetaCoreStructDescriptor* meshDesc = registry.FindStruct<MetaCoreMeshRendererComponent>();
            if (meshDesc) {
                MetaCoreMeshRendererComponent mesh;
                for (const auto& meshField : meshDesc->Fields) {
                    if (meshField.Name == "MeshSource" && meshJson.contains("MeshSource")) mesh.MeshSource = static_cast<MetaCoreMeshSourceKind>(meshJson["MeshSource"].get<int>());
                    else if (meshField.Name == "BuiltinMesh" && meshJson.contains("BuiltinMesh")) mesh.BuiltinMesh = static_cast<MetaCoreBuiltinMeshType>(meshJson["BuiltinMesh"].get<int>());
                    else if (meshField.Name == "MeshAssetGuid" && meshJson.contains("MeshAssetGuid")) mesh.MeshAssetGuid = StringToGuid(meshJson["MeshAssetGuid"].get<std::string>());
                    else if (meshField.Name == "MaterialAssetGuids" && meshJson.contains("MaterialAssetGuids") && meshJson["MaterialAssetGuids"].is_array()) {
                        for (const auto& mGuidJson : meshJson["MaterialAssetGuids"]) {
                            mesh.MaterialAssetGuids.push_back(StringToGuid(mGuidJson.get<std::string>()));
                        }
                    }
                    else if (meshField.Name == "SourceModelAssetGuid" && meshJson.contains("SourceModelAssetGuid")) mesh.SourceModelAssetGuid = StringToGuid(meshJson["SourceModelAssetGuid"].get<std::string>());
                    else if (meshField.Name == "SourceModelPath" && meshJson.contains("SourceModelPath")) mesh.SourceModelPath = meshJson["SourceModelPath"].get<std::string>();
                    else if (meshField.Name == "SourceNodePath" && meshJson.contains("SourceNodePath")) mesh.SourceNodePath = meshJson["SourceNodePath"].get<std::string>();
                    else if (meshField.Name == "BaseColorTextureGuid" && meshJson.contains("BaseColorTextureGuid")) mesh.BaseColorTextureGuid = StringToGuid(meshJson["BaseColorTextureGuid"].get<std::string>());
                    else if (meshField.Name == "MetallicRoughnessTextureGuid" && meshJson.contains("MetallicRoughnessTextureGuid")) mesh.MetallicRoughnessTextureGuid = StringToGuid(meshJson["MetallicRoughnessTextureGuid"].get<std::string>());
                    else if (meshField.Name == "NormalTextureGuid" && meshJson.contains("NormalTextureGuid")) mesh.NormalTextureGuid = StringToGuid(meshJson["NormalTextureGuid"].get<std::string>());
                    else if (meshField.Name == "EmissiveTextureGuid" && meshJson.contains("EmissiveTextureGuid")) mesh.EmissiveTextureGuid = StringToGuid(meshJson["EmissiveTextureGuid"].get<std::string>());
                    else if (meshField.Name == "AoTextureGuid" && meshJson.contains("AoTextureGuid")) mesh.AoTextureGuid = StringToGuid(meshJson["AoTextureGuid"].get<std::string>());
                    else if (meshField.Name == "BaseColorTexturePath" && meshJson.contains("BaseColorTexturePath")) mesh.BaseColorTexturePath = meshJson["BaseColorTexturePath"].get<std::string>();
                    else if (meshField.Name == "MetallicRoughnessTexturePath" && meshJson.contains("MetallicRoughnessTexturePath")) mesh.MetallicRoughnessTexturePath = meshJson["MetallicRoughnessTexturePath"].get<std::string>();
                    else if (meshField.Name == "NormalTexturePath" && meshJson.contains("NormalTexturePath")) mesh.NormalTexturePath = meshJson["NormalTexturePath"].get<std::string>();
                    else if (meshField.Name == "EmissiveTexturePath" && meshJson.contains("EmissiveTexturePath")) mesh.EmissiveTexturePath = meshJson["EmissiveTexturePath"].get<std::string>();
                    else if (meshField.Name == "AoTexturePath" && meshJson.contains("AoTexturePath")) mesh.AoTexturePath = meshJson["AoTexturePath"].get<std::string>();
                    else if (meshField.Name == "DoubleSided" && meshJson.contains("DoubleSided")) mesh.DoubleSided = meshJson["DoubleSided"].get<bool>();
                    else if (meshField.Name == "Metallic" && meshJson.contains("Metallic")) mesh.Metallic = meshJson["Metallic"].get<float>();
                    else if (meshField.Name == "Roughness" && meshJson.contains("Roughness")) mesh.Roughness = meshJson["Roughness"].get<float>();
                    else if (meshField.Name == "AlphaMode" && meshJson.contains("AlphaMode")) mesh.AlphaMode = static_cast<MetaCoreMeshAlphaMode>(meshJson["AlphaMode"].get<int>());
                    else if (meshField.Name == "AlphaCutoff" && meshJson.contains("AlphaCutoff")) mesh.AlphaCutoff = meshJson["AlphaCutoff"].get<float>();
                    else if (meshField.Name == "EmissiveColor" && meshJson.contains("EmissiveColor")) mesh.EmissiveColor = JsonToVec3(meshJson["EmissiveColor"]);
                    else if (meshField.Name == "BaseColor" && meshJson.contains("BaseColor")) mesh.BaseColor = JsonToVec3(meshJson["BaseColor"]);
                    else if (meshField.Name == "ModelNodeIndex" && meshJson.contains("ModelNodeIndex")) mesh.ModelNodeIndex = meshJson["ModelNodeIndex"].get<std::int32_t>();
                    else if (meshField.Name == "SubMeshIndex" && meshJson.contains("SubMeshIndex")) mesh.SubMeshIndex = meshJson["SubMeshIndex"].get<std::int32_t>();
                    else if (meshField.Name == "Visible" && meshJson.contains("Visible")) mesh.Visible = meshJson["Visible"].get<bool>();
                }
                obj.MeshRenderer = mesh;
            }
        } else if (objField.Name == "Light" && objJson.contains("Light")) {
            const auto& lightJson = objJson["Light"];
            const MetaCoreStructDescriptor* lightDesc = registry.FindStruct<MetaCoreLightComponent>();
            if (lightDesc) {
                MetaCoreLightComponent light;
                for (const auto& lightField : lightDesc->Fields) {
                    if (lightField.Name == "Color" && lightJson.contains("Color")) light.Color = JsonToVec3(lightJson["Color"]);
                    else if (lightField.Name == "Intensity" && lightJson.contains("Intensity")) light.Intensity = lightJson["Intensity"].get<float>();
                }
                obj.Light = light;
            }
        } else if (objField.Name == "Camera" && objJson.contains("Camera")) {
            const auto& camJson = objJson["Camera"];
            const MetaCoreStructDescriptor* camDesc = registry.FindStruct<MetaCoreCameraComponent>();
            if (camDesc) {
                MetaCoreCameraComponent cam;
                for (const auto& camField : camDesc->Fields) {
                    if (camField.Name == "FieldOfViewDegrees" && camJson.contains("FieldOfViewDegrees")) cam.FieldOfViewDegrees = camJson["FieldOfViewDegrees"].get<float>();
                    else if (camField.Name == "NearClip" && camJson.contains("NearClip")) cam.NearClip = camJson["NearClip"].get<float>();
                    else if (camField.Name == "FarClip" && camJson.contains("FarClip")) cam.FarClip = camJson["FarClip"].get<float>();
                    else if (camField.Name == "IsPrimary" && camJson.contains("IsPrimary")) cam.IsPrimary = camJson["IsPrimary"].get<bool>();
                }
                obj.Camera = cam;
            }
        } else if (objField.Name == "PrefabInstance" && objJson.contains("PrefabInstance")) {
            const auto& prefabJson = objJson["PrefabInstance"];
            const MetaCoreStructDescriptor* prefabDesc = registry.FindStruct<MetaCorePrefabInstanceMetadata>();
            if (prefabDesc) {
                MetaCorePrefabInstanceMetadata prefab;
                for (const auto& prefabField : prefabDesc->Fields) {
                    if (prefabField.Name == "PrefabAssetGuid" && prefabJson.contains("PrefabAssetGuid")) prefab.PrefabAssetGuid = StringToGuid(prefabJson["PrefabAssetGuid"].get<std::string>());
                    else if (prefabField.Name == "PrefabObjectId" && prefabJson.contains("PrefabObjectId")) prefab.PrefabObjectId = prefabJson["PrefabObjectId"].get<MetaCoreId>();
                    else if (prefabField.Name == "PrefabInstanceRootId" && prefabJson.contains("PrefabInstanceRootId")) prefab.PrefabInstanceRootId = prefabJson["PrefabInstanceRootId"].get<MetaCoreId>();
                }
                obj.PrefabInstance = prefab;
            }
        } else if (objField.Name == "SerializedComponents" && objJson.contains("Components") && objJson["Components"].is_array()) {
            for (const auto& componentJson : objJson["Components"]) {
                if (!componentJson.contains("TypeId") || !componentJson.contains("Payload")) {
                    continue;
                }
                MetaCoreSerializedComponentData component{};
                component.TypeId = componentJson["TypeId"].get<std::string>();
                component.Payload = HexStringToBytes(componentJson["Payload"].get<std::string>());
                if (!component.TypeId.empty() && !component.Payload.empty()) {
                    obj.SerializedComponents.push_back(std::move(component));
                }
            }
        }
    }
    return obj;
}

bool MetaCoreSceneSerializer::SaveSceneToJson(
    const std::filesystem::path& absolutePath,
    const MetaCoreSceneDocument& sceneDocument,
    const MetaCoreTypeRegistry& registry
) {
    try {
        json sceneJson;

        // 验证 MetaCoreSceneDocument 反射注册
        const MetaCoreStructDescriptor* sceneDesc = registry.FindStruct<MetaCoreSceneDocument>();
        if (!sceneDesc) {
            std::cerr << "SaveSceneToJson: 未能找到 MetaCoreSceneDocument 反射描述" << std::endl;
            return false;
        }

        for (const auto& field : sceneDesc->Fields) {
            if (field.Name == "Name") {
                sceneJson["SceneName"] = sceneDocument.Name;
            } else if (field.Name == "Selection") {
                const MetaCoreStructDescriptor* selDesc = registry.FindStruct<MetaCoreEditorSelectionSnapshot>();
                if (selDesc) {
                    json selJson = json::object();
                    for (const auto& selField : selDesc->Fields) {
                        if (selField.Name == "SelectedObjectIds") selJson["SelectedObjectIds"] = sceneDocument.Selection.SelectedObjectIds;
                        else if (selField.Name == "ActiveObjectId") selJson["ActiveObjectId"] = sceneDocument.Selection.ActiveObjectId;
                        else if (selField.Name == "SelectionAnchorId") selJson["SelectionAnchorId"] = sceneDocument.Selection.SelectionAnchorId;
                    }
                    sceneJson["Selection"] = selJson;
                }
            } else if (field.Name == "GameObjects") {
                json gameObjectsArray = json::array();
                for (const auto& obj : sceneDocument.GameObjects) {
                    gameObjectsArray.push_back(GameObjectDataToJson(obj, registry));
                }
                sceneJson["GameObjects"] = gameObjectsArray;
            }
        }

        std::ofstream file(absolutePath);
        if (!file.is_open()) {
            std::cerr << "SaveSceneToJson: 无法打开文件写入 " << absolutePath << std::endl;
            return false;
        }

        file << sceneJson.dump(4);
        return true;
    } catch (const std::exception& e) {
        std::cerr << "SaveSceneToJson: 发生异常 - " << e.what() << std::endl;
        return false;
    }
}

std::optional<MetaCoreSceneDocument> MetaCoreSceneSerializer::LoadSceneFromJson(
    const std::filesystem::path& absolutePath,
    const MetaCoreTypeRegistry& registry
) {
    try {
        std::ifstream file(absolutePath);
        if (!file.is_open()) {
            std::cerr << "LoadSceneFromJson: 无法打开文件进行读取 " << absolutePath << std::endl;
            return std::nullopt;
        }

        json sceneJson;
        file >> sceneJson;

        MetaCoreSceneDocument sceneDocument;

        // 验证 MetaCoreSceneDocument 反射注册
        const MetaCoreStructDescriptor* sceneDesc = registry.FindStruct<MetaCoreSceneDocument>();
        if (!sceneDesc) {
            std::cerr << "LoadSceneFromJson: 未能找到 MetaCoreSceneDocument 反射描述" << std::endl;
            return std::nullopt;
        }

        for (const auto& field : sceneDesc->Fields) {
            if (field.Name == "Name" && sceneJson.contains("SceneName")) {
                sceneDocument.Name = sceneJson["SceneName"].get<std::string>();
            } else if (field.Name == "Selection" && sceneJson.contains("Selection")) {
                const auto& selectionJson = sceneJson["Selection"];
                const MetaCoreStructDescriptor* selDesc = registry.FindStruct<MetaCoreEditorSelectionSnapshot>();
                if (selDesc) {
                    for (const auto& selField : selDesc->Fields) {
                        if (selField.Name == "SelectedObjectIds" && selectionJson.contains("SelectedObjectIds")) {
                            sceneDocument.Selection.SelectedObjectIds = selectionJson["SelectedObjectIds"].get<std::vector<MetaCoreId>>();
                        } else if (selField.Name == "ActiveObjectId" && selectionJson.contains("ActiveObjectId")) {
                            sceneDocument.Selection.ActiveObjectId = selectionJson["ActiveObjectId"].get<MetaCoreId>();
                        } else if (selField.Name == "SelectionAnchorId" && selectionJson.contains("SelectionAnchorId")) {
                            sceneDocument.Selection.SelectionAnchorId = selectionJson["SelectionAnchorId"].get<MetaCoreId>();
                        }
                    }
                }
            } else if (field.Name == "GameObjects" && sceneJson.contains("GameObjects") && sceneJson["GameObjects"].is_array()) {
                for (const auto& objJson : sceneJson["GameObjects"]) {
                    sceneDocument.GameObjects.push_back(JsonToGameObjectData(objJson, registry));
                }
            }
        }

        return sceneDocument;
    } catch (const std::exception& e) {
        std::cerr << "LoadSceneFromJson: 发生异常 - " << e.what() << std::endl;
        return std::nullopt;
    }
}

// Prefab
bool MetaCoreSceneSerializer::SavePrefabToJson(
    const std::filesystem::path& absolutePath,
    const MetaCorePrefabDocument& prefabDocument,
    const MetaCoreTypeRegistry& registry
) {
    try {
        json prefabJson;
        prefabJson["PrefabName"] = prefabDocument.Name;
        json gameObjectsArray = json::array();
        for (const auto& obj : prefabDocument.GameObjects) {
            gameObjectsArray.push_back(GameObjectDataToJson(obj, registry));
        }
        prefabJson["GameObjects"] = gameObjectsArray;

        std::ofstream file(absolutePath);
        if (!file.is_open()) {
            return false;
        }
        file << prefabJson.dump(4);
        return true;
    } catch (...) {
        return false;
    }
}

std::optional<MetaCorePrefabDocument> MetaCoreSceneSerializer::LoadPrefabFromJson(
    const std::filesystem::path& absolutePath,
    const MetaCoreTypeRegistry& registry
) {
    try {
        std::ifstream file(absolutePath);
        if (!file.is_open()) {
            return std::nullopt;
        }
        json prefabJson;
        file >> prefabJson;

        MetaCorePrefabDocument doc;
        if (prefabJson.contains("PrefabName")) {
            doc.Name = prefabJson["PrefabName"].get<std::string>();
        }
        if (prefabJson.contains("GameObjects") && prefabJson["GameObjects"].is_array()) {
            for (const auto& objJson : prefabJson["GameObjects"]) {
                doc.GameObjects.push_back(JsonToGameObjectData(objJson, registry));
            }
        }
        return doc;
    } catch (...) {
        return std::nullopt;
    }
}

// Material
bool MetaCoreSceneSerializer::SaveMaterialToJson(
    const std::filesystem::path& absolutePath,
    const MetaCoreMaterialAssetDocument& doc,
    const MetaCoreTypeRegistry& registry
) {
    (void)registry;
    try {
        json matJson;
        matJson["AssetGuid"] = GuidToString(doc.AssetGuid);
        matJson["Name"] = doc.Name;
        matJson["StableImportKey"] = doc.StableImportKey;
        matJson["ShaderModel"] = static_cast<int>(doc.ShaderModel);
        matJson["BaseColor"] = Vec3ToJson(doc.BaseColor);
        matJson["BaseColorTexture"] = GuidToString(doc.BaseColorTexture);
        matJson["NormalTexture"] = GuidToString(doc.NormalTexture);
        matJson["Metallic"] = doc.Metallic;
        matJson["Roughness"] = doc.Roughness;
        matJson["MetallicRoughnessTexture"] = GuidToString(doc.MetallicRoughnessTexture);
        matJson["AoTexture"] = GuidToString(doc.AoTexture);
        matJson["EmissiveColor"] = Vec3ToJson(doc.EmissiveColor);
        matJson["EmissiveTexture"] = GuidToString(doc.EmissiveTexture);
        matJson["AlphaMode"] = static_cast<int>(doc.AlphaMode);
        matJson["AlphaCutoff"] = doc.AlphaCutoff;
        matJson["DoubleSided"] = doc.DoubleSided;

        std::ofstream file(absolutePath);
        if (!file.is_open()) {
            return false;
        }
        file << matJson.dump(4);
        return true;
    } catch (...) {
        return false;
    }
}

std::optional<MetaCoreMaterialAssetDocument> MetaCoreSceneSerializer::LoadMaterialFromJson(
    const std::filesystem::path& absolutePath,
    const MetaCoreTypeRegistry& registry
) {
    (void)registry;
    try {
        std::ifstream file(absolutePath);
        if (!file.is_open()) {
            return std::nullopt;
        }
        json matJson;
        file >> matJson;

        MetaCoreMaterialAssetDocument doc;
        if (matJson.contains("AssetGuid")) doc.AssetGuid = StringToGuid(matJson["AssetGuid"].get<std::string>());
        if (matJson.contains("Name")) doc.Name = matJson["Name"].get<std::string>();
        if (matJson.contains("StableImportKey")) doc.StableImportKey = matJson["StableImportKey"].get<std::string>();
        if (matJson.contains("ShaderModel")) doc.ShaderModel = static_cast<MetaCoreMaterialShaderModel>(matJson["ShaderModel"].get<int>());
        if (matJson.contains("BaseColor")) doc.BaseColor = JsonToVec3(matJson["BaseColor"]);
        if (matJson.contains("BaseColorTexture")) doc.BaseColorTexture = StringToGuid(matJson["BaseColorTexture"].get<std::string>());
        if (matJson.contains("NormalTexture")) doc.NormalTexture = StringToGuid(matJson["NormalTexture"].get<std::string>());
        if (matJson.contains("Metallic")) doc.Metallic = matJson["Metallic"].get<float>();
        if (matJson.contains("Roughness")) doc.Roughness = matJson["Roughness"].get<float>();
        if (matJson.contains("MetallicRoughnessTexture")) doc.MetallicRoughnessTexture = StringToGuid(matJson["MetallicRoughnessTexture"].get<std::string>());
        if (matJson.contains("AoTexture")) doc.AoTexture = StringToGuid(matJson["AoTexture"].get<std::string>());
        if (matJson.contains("EmissiveColor")) doc.EmissiveColor = JsonToVec3(matJson["EmissiveColor"]);
        if (matJson.contains("EmissiveTexture")) doc.EmissiveTexture = StringToGuid(matJson["EmissiveTexture"].get<std::string>());
        if (matJson.contains("AlphaMode")) doc.AlphaMode = static_cast<MetaCoreMaterialAlphaMode>(matJson["AlphaMode"].get<int>());
        if (matJson.contains("AlphaCutoff")) doc.AlphaCutoff = matJson["AlphaCutoff"].get<float>();
        if (matJson.contains("DoubleSided")) doc.DoubleSided = matJson["DoubleSided"].get<bool>();

        return doc;
    } catch (...) {
        return std::nullopt;
    }
}

// UI 序列化辅助方法
static json RectTransformToJson(const MetaCoreUiRectTransformDocument& trans) {
    json j = json::object();
    j["AnchorMin"] = Vec3ToJson(trans.AnchorMin);
    j["AnchorMax"] = Vec3ToJson(trans.AnchorMax);
    j["Pivot"] = Vec3ToJson(trans.Pivot);
    j["Position"] = Vec3ToJson(trans.Position);
    j["Size"] = Vec3ToJson(trans.Size);
    return j;
}

static MetaCoreUiRectTransformDocument JsonToRectTransform(const json& j) {
    MetaCoreUiRectTransformDocument trans;
    if (j.contains("AnchorMin")) trans.AnchorMin = JsonToVec3(j["AnchorMin"]);
    if (j.contains("AnchorMax")) trans.AnchorMax = JsonToVec3(j["AnchorMax"]);
    if (j.contains("Pivot")) trans.Pivot = JsonToVec3(j["Pivot"]);
    if (j.contains("Position")) trans.Position = JsonToVec3(j["Position"]);
    if (j.contains("Size")) trans.Size = JsonToVec3(j["Size"]);
    return trans;
}

static json UiStyleToJson(const MetaCoreUiStyleDocument& style) {
    json j = json::object();
    j["BackgroundColor"] = Vec3ToJson(style.BackgroundColor);
    j["TextColor"] = Vec3ToJson(style.TextColor);
    j["TintColor"] = Vec3ToJson(style.TintColor);
    j["FontSize"] = style.FontSize;
    j["Padding"] = Vec3ToJson(style.Padding);
    j["HorizontalAlignment"] = static_cast<int>(style.HorizontalAlignment);
    j["VerticalAlignment"] = static_cast<int>(style.VerticalAlignment);
    j["ImageAssetGuid"] = GuidToString(style.ImageAssetGuid);
    j["PreserveAspect"] = style.PreserveAspect;
    return j;
}

static MetaCoreUiStyleDocument JsonToUiStyle(const json& j) {
    MetaCoreUiStyleDocument style;
    if (j.contains("BackgroundColor")) style.BackgroundColor = JsonToVec3(j["BackgroundColor"]);
    if (j.contains("TextColor")) style.TextColor = JsonToVec3(j["TextColor"]);
    if (j.contains("TintColor")) style.TintColor = JsonToVec3(j["TintColor"]);
    if (j.contains("FontSize")) style.FontSize = j["FontSize"].get<float>();
    if (j.contains("Padding")) style.Padding = JsonToVec3(j["Padding"]);
    if (j.contains("HorizontalAlignment")) style.HorizontalAlignment = static_cast<MetaCoreUiHorizontalAlignment>(j["HorizontalAlignment"].get<int>());
    if (j.contains("VerticalAlignment")) style.VerticalAlignment = static_cast<MetaCoreUiVerticalAlignment>(j["VerticalAlignment"].get<int>());
    if (j.contains("ImageAssetGuid")) style.ImageAssetGuid = StringToGuid(j["ImageAssetGuid"].get<std::string>());
    if (j.contains("PreserveAspect")) style.PreserveAspect = j["PreserveAspect"].get<bool>();
    return style;
}

static json UiNodeToJson(const MetaCoreUiNodeDocument& node) {
    json j = json::object();
    j["Id"] = node.Id;
    j["Name"] = node.Name;
    j["Type"] = static_cast<int>(node.Type);
    j["ParentId"] = node.ParentId;
    j["Children"] = node.Children;
    j["Visible"] = node.Visible;
    j["RectTransform"] = RectTransformToJson(node.RectTransform);
    j["Style"] = UiStyleToJson(node.Style);
    j["Text"] = node.Text;
    j["Interactable"] = node.Interactable;
    return j;
}

static MetaCoreUiNodeDocument JsonToUiNode(const json& j) {
    MetaCoreUiNodeDocument node;
    if (j.contains("Id")) node.Id = j["Id"].get<std::string>();
    if (j.contains("Name")) node.Name = j["Name"].get<std::string>();
    if (j.contains("Type")) node.Type = static_cast<MetaCoreUiNodeType>(j["Type"].get<int>());
    if (j.contains("ParentId")) node.ParentId = j["ParentId"].get<std::string>();
    if (j.contains("Children")) node.Children = j["Children"].get<std::vector<std::string>>();
    if (j.contains("Visible")) node.Visible = j["Visible"].get<bool>();
    if (j.contains("RectTransform")) node.RectTransform = JsonToRectTransform(j["RectTransform"]);
    if (j.contains("Style")) node.Style = JsonToUiStyle(j["Style"]);
    if (j.contains("Text")) node.Text = j["Text"].get<std::string>();
    if (j.contains("Interactable")) node.Interactable = j["Interactable"].get<bool>();
    return node;
}

bool MetaCoreSceneSerializer::SaveUiToJson(
    const std::filesystem::path& absolutePath,
    const MetaCoreUiDocument& uiDocument,
    const MetaCoreTypeRegistry& registry
) {
    (void)registry;
    try {
        json uiJson;
        uiJson["Name"] = uiDocument.Name;
        uiJson["ReferenceWidth"] = uiDocument.ReferenceWidth;
        uiJson["ReferenceHeight"] = uiDocument.ReferenceHeight;
        uiJson["RootNodeIds"] = uiDocument.RootNodeIds;

        json nodesArray = json::array();
        for (const auto& node : uiDocument.Nodes) {
            nodesArray.push_back(UiNodeToJson(node));
        }
        uiJson["Nodes"] = nodesArray;

        std::ofstream file(absolutePath);
        if (!file.is_open()) {
            return false;
        }
        file << uiJson.dump(4);
        return true;
    } catch (...) {
        return false;
    }
}

std::optional<MetaCoreUiDocument> MetaCoreSceneSerializer::LoadUiFromJson(
    const std::filesystem::path& absolutePath,
    const MetaCoreTypeRegistry& registry
) {
    (void)registry;
    try {
        std::ifstream file(absolutePath);
        if (!file.is_open()) {
            return std::nullopt;
        }
        json uiJson;
        file >> uiJson;

        MetaCoreUiDocument doc;
        if (uiJson.contains("Name")) doc.Name = uiJson["Name"].get<std::string>();
        if (uiJson.contains("ReferenceWidth")) doc.ReferenceWidth = uiJson["ReferenceWidth"].get<std::int32_t>();
        if (uiJson.contains("ReferenceHeight")) doc.ReferenceHeight = uiJson["ReferenceHeight"].get<std::int32_t>();
        if (uiJson.contains("RootNodeIds")) doc.RootNodeIds = uiJson["RootNodeIds"].get<std::vector<std::string>>();

        if (uiJson.contains("Nodes") && uiJson["Nodes"].is_array()) {
            for (const auto& nodeJson : uiJson["Nodes"]) {
                doc.Nodes.push_back(JsonToUiNode(nodeJson));
            }
        }
        return doc;
    } catch (...) {
        return std::nullopt;
    }
}

}  // namespace MetaCore