#pragma once

#include "SceneSnapshot.h"

#include <string>
#include <vector>
#include <cstdint>
#include <XCEngine/Components/GameObject.h>

namespace XCEngine {
namespace Components {
class Scene;
}

namespace Editor {

struct SceneLoadProgressSnapshot {
    std::uint64_t revision = 0;
    bool inProgress = false;
    bool success = false;
    bool firstFramePresented = false;
    bool streamingCompleted = false;
    bool interactive = false;
    bool startupScene = false;
    std::string operation;
    std::string scenePath;
    std::string message;
    std::uint64_t startedAtMs = 0;
    std::uint64_t structureReadyAtMs = 0;
    std::uint64_t firstFrameAtMs = 0;
    std::uint64_t streamingCompletedAtMs = 0;
    std::uint64_t interactiveAtMs = 0;
    std::uint32_t currentPendingAsyncLoads = 0;
    std::uint32_t peakPendingAsyncLoads = 0;

    bool HasValue() const {
        return revision != 0;
    }
};

class ISceneManager {
public:
    virtual ~ISceneManager() = default;
    
    virtual ::XCEngine::Components::GameObject* CreateEntity(const std::string& name, ::XCEngine::Components::GameObject* parent = nullptr) = 0;
    virtual void DeleteEntity(::XCEngine::Components::GameObject::ID id) = 0;
    virtual void RenameEntity(::XCEngine::Components::GameObject::ID id, const std::string& newName) = 0;
    virtual ::XCEngine::Components::GameObject* GetEntity(::XCEngine::Components::GameObject::ID id) = 0;
    virtual const std::vector<::XCEngine::Components::GameObject*>& GetRootEntities() const = 0;
    virtual void CopyEntity(::XCEngine::Components::GameObject::ID id) = 0;
    virtual ::XCEngine::Components::GameObject::ID PasteEntity(::XCEngine::Components::GameObject::ID parent = 0) = 0;
    virtual ::XCEngine::Components::GameObject::ID DuplicateEntity(::XCEngine::Components::GameObject::ID id) = 0;
    virtual void MoveEntity(::XCEngine::Components::GameObject::ID id, ::XCEngine::Components::GameObject::ID newParent) = 0;
    virtual bool HasClipboardData() const = 0;
    virtual void NewScene(const std::string& name = "Untitled Scene") = 0;
    virtual bool LoadScene(const std::string& filePath) = 0;
    virtual bool SaveScene() = 0;
    virtual bool SaveSceneAs(const std::string& filePath) = 0;
    virtual bool LoadStartupScene(const std::string& projectPath) = 0;
    virtual bool HasActiveScene() const = 0;
    virtual bool IsSceneDirty() const = 0;
    virtual void MarkSceneDirty() = 0;
    virtual void SetSceneDocumentDirtyTrackingEnabled(bool enabled) = 0;
    virtual bool IsSceneDocumentDirtyTrackingEnabled() const = 0;
    virtual const std::string& GetCurrentScenePath() const = 0;
    virtual const std::string& GetCurrentSceneName() const = 0;
    virtual ::XCEngine::Components::Scene* GetScene() = 0;
    virtual const ::XCEngine::Components::Scene* GetScene() const = 0;
    virtual SceneLoadProgressSnapshot GetSceneLoadProgress() const = 0;
    virtual void NotifySceneViewportFramePresented(std::uint32_t pendingAsyncLoads) = 0;
    virtual void NotifyExternalSceneMutation(::XCEngine::Components::GameObject::ID primaryEntityId = 0) {}
    virtual SceneSnapshot CaptureSceneSnapshot() const = 0;
    virtual bool RestoreSceneSnapshot(const SceneSnapshot& snapshot) = 0;
    virtual void CreateDemoScene() = 0;
};

}
}