#pragma once

#include "Platform/Win32/EditorWindowManager.h"
#include "Platform/Win32/WindowManager/EditorWindowWorkspaceStore.h"

namespace XCEngine::UI::Editor::App::Internal {

class EditorWindowHostRuntime final {
public:
    using CreateParams = EditorWindowManager::CreateParams;

    EditorWindowHostRuntime(
        EditorWindowHostConfig hostConfig,
        std::filesystem::path repoRoot,
        EditorContext& editorContext);
    ~EditorWindowHostRuntime();

    EditorWindow* CreateEditorWindow(
        UIEditorWorkspaceController workspaceController,
        const CreateParams& params);
    void HandlePendingNativeWindowCreated(HWND hwnd);
    void Shutdown();

    EditorWindow* FindWindow(HWND hwnd);
    const EditorWindow* FindWindow(HWND hwnd) const;
    EditorWindow* FindWindow(std::string_view windowId);
    const EditorWindow* FindWindow(std::string_view windowId) const;
    EditorWindow* FindPrimaryWindow();
    const EditorWindow* FindPrimaryWindow() const;

    bool HasWindows() const;
    void DestroyClosedWindows();
    void RenderAllWindows(
        bool globalTabDragActive,
        EditorWindowWorkspaceCoordinator& workspaceCoordinator);
    void HandleDestroyedWindow(HWND hwnd);

    EditorContext& GetEditorContext() {
        return m_editorContext;
    }

    const EditorContext& GetEditorContext() const {
        return m_editorContext;
    }

    const EditorWindowHostConfig& GetHostConfig() const {
        return m_hostConfig;
    }

    const std::filesystem::path& GetRepoRoot() const {
        return m_repoRoot;
    }

    std::vector<std::unique_ptr<EditorWindow>>& GetWindows() {
        return m_windows;
    }

    const std::vector<std::unique_ptr<EditorWindow>>& GetWindows() const {
        return m_windows;
    }

    void LogRuntimeTrace(std::string_view channel, std::string_view message) const;

private:
    void DestroyEditorWindow(EditorWindow& window);

    EditorWindowHostConfig m_hostConfig = {};
    std::filesystem::path m_repoRoot = {};
    EditorContext& m_editorContext;
    std::vector<std::unique_ptr<EditorWindow>> m_windows = {};
    EditorWindow* m_pendingCreateWindow = nullptr;
};

class EditorWindowWorkspaceCoordinator final {
public:
    explicit EditorWindowWorkspaceCoordinator(EditorWindowHostRuntime& hostRuntime);
    ~EditorWindowWorkspaceCoordinator();

    void RegisterExistingWindow(EditorWindow& window);
    void CommitWindowProjection(EditorWindow& window);
    void HandleWindowDestroyed(const EditorWindow& window);

    bool IsGlobalTabDragActive() const;
    bool OwnsActiveGlobalTabDrag(std::string_view windowId) const;
    void EndGlobalTabDragSession();
    bool HandleGlobalTabDragPointerMove(HWND hwnd);
    bool HandleGlobalTabDragPointerButtonUp(HWND hwnd);
    void HandleWindowFrameTransferRequests(
        EditorWindow& sourceWindow,
        EditorWindowFrameTransferRequests&& transferRequests);

private:
    struct GlobalTabDragSession {
        bool active = false;
        std::string panelWindowId = {};
        std::string sourceNodeId = {};
        std::string panelId = {};
        std::string previewWindowId = {};
        POINT screenPoint = {};
        POINT dragHotspot = {};
    };

    UIEditorWindowWorkspaceController BuildWorkspaceMutationController() const;
    bool SynchronizeWindowsFromWindowSet(
        const UIEditorWindowWorkspaceSet& windowSet,
        std::string_view preferredNewWindowId,
        const POINT& preferredScreenPoint);
    bool CommitWindowWorkspaceMutation(
        const UIEditorWindowWorkspaceController& windowWorkspaceController,
        std::string_view preferredNewWindowId,
        const POINT& preferredScreenPoint);
    UIEditorWorkspaceController BuildWorkspaceControllerForWindow(
        const UIEditorWindowWorkspaceState& windowState) const;
    std::wstring BuildWindowTitle(
        const UIEditorWorkspaceController& workspaceController) const;
    void RefreshWindowTitle(EditorWindow& window) const;
    RECT BuildDetachedWindowRect(const POINT& screenPoint) const;
    void BeginGlobalTabDragSession(
        std::string_view panelWindowId,
        std::string_view sourceNodeId,
        std::string_view panelId,
        const POINT& screenPoint,
        const POINT& dragHotspot);
    bool TryResolveGlobalTabDragHotspot(
        const EditorWindow& sourceWindow,
        std::string_view nodeId,
        std::string_view panelId,
        const POINT& screenPoint,
        POINT& outDragHotspot) const;
    void ClearGlobalTabDragDropPreview();
    void UpdateGlobalTabDragDropPreview();
    void UpdateGlobalTabDragOwnerWindowPosition();
    EditorWindow* FindTopmostWindowAtScreenPoint(
        const POINT& screenPoint,
        std::string_view excludedWindowId = {});
    const EditorWindow* FindTopmostWindowAtScreenPoint(
        const POINT& screenPoint,
        std::string_view excludedWindowId = {}) const;
    bool TryStartGlobalTabDrag(
        EditorWindow& sourceWindow,
        const EditorWindowPanelTransferRequest& request);
    bool TryProcessDetachRequest(
        EditorWindow& sourceWindow,
        const EditorWindowPanelTransferRequest& request);
    void LogRuntimeTrace(std::string_view channel, std::string_view message) const;

    EditorWindowHostRuntime& m_hostRuntime;
    EditorWindowWorkspaceStore m_workspaceStore;
    GlobalTabDragSession m_globalTabDragSession = {};
};

} // namespace XCEngine::UI::Editor::App::Internal