#pragma once

#include "Platform/D3D12WindowRenderer.h"
#include "UI/ImGuiBackendBridge.h"
#include "UI/ImGuiSession.h"
#include "Viewport/ViewportHostService.h"

#include <XCEngine/Rendering/RenderContext.h>
#include <memory>
#include <string>
#include <windows.h>

#include <XCEngine/Core/LayerStack.h>

namespace XCEngine {
namespace RHI {
class RHIDevice;
class RHISwapChain;
} // namespace RHI

namespace Editor {

class EditorLayer;
class IEditorContext;

class Application {
public:
    static Application& Get();
    
    bool Initialize(HWND hwnd);
    void Shutdown();
    void Render();
    void OnResize(int width, int height);
    bool SwitchProject(const std::string& projectPath);
    void SaveProjectState();
    Rendering::RenderContext GetMainRenderContext() const { return m_windowRenderer.GetRenderContext(); }
    RHI::RHIDevice* GetMainRHIDevice() const { return m_windowRenderer.GetRHIDevice(); }
    RHI::RHISwapChain* GetMainSwapChain() const { return m_windowRenderer.GetSwapChain(); }
    IViewportHostService& GetViewportHostService() { return m_viewportHostService; }
    bool IsRenderReady() const { return m_renderReady; }
    HWND GetWindowHandle() const { return m_hwnd; }
    
    IEditorContext& GetEditorContext() const { return *m_editorContext; }
    
private:
    Application() = default;
    ~Application() = default;
    bool InitializeWindowRenderer(HWND hwnd);
    void InitializeEditorContext(const std::string& projectPath);
    void InitializeImGui(HWND hwnd);
    void AttachEditorLayer();
    void DetachEditorLayer();
    void ShutdownEditorContext();
    void RenderEditorFrame();
    void UpdateWindowTitle();
    
    HWND m_hwnd = nullptr;
    
    Core::LayerStack m_layerStack;
    EditorLayer* m_editorLayer = nullptr;
    std::shared_ptr<IEditorContext> m_editorContext;
    Platform::D3D12WindowRenderer m_windowRenderer;
    UI::ImGuiBackendBridge m_imguiBackend;
    UI::ImGuiSession m_imguiSession;
    ViewportHostService m_viewportHostService;
    uint64_t m_exitRequestedHandlerId = 0;
    std::wstring m_lastWindowTitle;
    bool m_renderReady = false;
};

}
}