#include "Actions/EditorActions.h"
#include "Commands/EntityCommands.h"
#include "Commands/SceneCommands.h"
#include "MenuBar.h"
#include "Core/EditorEvents.h"
#include "Core/EventBus.h"
#include "Core/IEditorContext.h"
#include "Core/ISceneManager.h"
#include "Core/IUndoManager.h"
#include "Core/ISelectionManager.h"
#include "UI/UI.h"
#include <filesystem>
#include <imgui.h>

namespace XCEngine {
namespace Editor {

MenuBar::MenuBar() : Panel("MenuBar") {}

void MenuBar::Render() {
    HandleShortcuts();

    if (ImGui::BeginMainMenuBar()) {
        ShowFileMenu();
        ShowEditMenu();
        ShowViewMenu();
        ShowHelpMenu();
        RenderSceneStatus();
        ImGui::EndMainMenuBar();
    }

    RenderAboutPopup();
}

void MenuBar::HandleShortcuts() {
    if (!m_context) {
        return;
    }

    Actions::HandleShortcut(Actions::MakeNewSceneAction(), [&]() { Commands::NewScene(*m_context); });
    Actions::HandleShortcut(Actions::MakeOpenSceneAction(), [&]() { Commands::OpenSceneWithDialog(*m_context); });
    Actions::HandleShortcut(Actions::MakeSaveSceneAction(), [&]() { Commands::SaveCurrentScene(*m_context); });
    Actions::HandleShortcut(Actions::MakeSaveSceneAsAction(), [&]() { Commands::SaveSceneAsWithDialog(*m_context); });
    Actions::HandleShortcut(Actions::MakeUndoAction(*m_context), [&]() { m_context->GetUndoManager().Undo(); });
    Actions::HandleShortcut(Actions::MakeRedoAction(*m_context), [&]() { m_context->GetUndoManager().Redo(); });
}

void MenuBar::ShowFileMenu() {
    UI::DrawMenuScope("File", [&]() {
        Actions::DrawMenuAction(Actions::MakeNewSceneAction(), [&]() { Commands::NewScene(*m_context); });
        Actions::DrawMenuAction(Actions::MakeOpenSceneAction(), [&]() { Commands::OpenSceneWithDialog(*m_context); });
        Actions::DrawMenuAction(Actions::MakeSaveSceneAction(), [&]() { Commands::SaveCurrentScene(*m_context); });
        Actions::DrawMenuAction(Actions::MakeSaveSceneAsAction(), [&]() { Commands::SaveSceneAsWithDialog(*m_context); });
        Actions::DrawMenuSeparator();
        Actions::DrawMenuAction(Actions::MakeExitAction(), [&]() {
            m_context->GetEventBus().Publish(EditorExitRequestedEvent{});
        });
    });
}

void MenuBar::ShowEditMenu() {
    ::XCEngine::Components::GameObject* selectedGameObject = Actions::GetSelectedGameObject(*m_context);

    UI::DrawMenuScope("Edit", [&]() {
        Actions::DrawMenuAction(Actions::MakeUndoAction(*m_context), [&]() { m_context->GetUndoManager().Undo(); });
        Actions::DrawMenuAction(Actions::MakeRedoAction(*m_context), [&]() { m_context->GetUndoManager().Redo(); });
        Actions::DrawMenuSeparator();
        Actions::DrawMenuAction(Actions::MakeCutAction(false), []() {});
        Actions::DrawMenuAction(Actions::MakeCopyEntityAction(selectedGameObject), [&]() {
            Commands::CopyEntity(*m_context, selectedGameObject->GetID());
        });
        Actions::DrawMenuAction(Actions::MakePasteEntityAction(*m_context), [&]() {
            Commands::PasteEntity(*m_context, selectedGameObject ? selectedGameObject->GetID() : 0);
        });
    });
}

void MenuBar::ShowViewMenu() {
    UI::DrawMenuScope("View", [&]() {
        Actions::DrawMenuAction(Actions::MakeResetLayoutAction(), [&]() {
            m_context->GetEventBus().Publish(DockLayoutResetRequestedEvent{});
        });
    });
}

void MenuBar::ShowHelpMenu() {
    UI::DrawMenuScope("Help", [&]() {
        Actions::DrawMenuAction(Actions::MakeAboutAction(), [&]() {
            m_aboutPopup.RequestOpen();
        });
    });
}

void MenuBar::RenderAboutPopup() {
    m_aboutPopup.ConsumeOpenRequest("About XCEngine Editor");

    if (!UI::BeginModalPopup("About XCEngine Editor")) {
        return;
    }

    ImGui::TextUnformatted("XCEngine Editor");
    ImGui::Separator();
    UI::DrawHintText("Unity-like editor shell built on Dear ImGui.");
    ImGui::Spacing();
    ImGui::Text("Date: 2026-03-26");
    ImGui::Text("UI Refactor: Actions / Commands / Layout in progress");
    if (m_context) {
        ImGui::Text("Project: %s", m_context->GetProjectPath().c_str());
    }
    ImGui::Spacing();

    if (Actions::DrawButtonAction(Actions::MakeAction("Close"), UI::DialogActionButtonSize())) {
        ImGui::CloseCurrentPopup();
    }

    UI::EndPopup();
}

void MenuBar::RenderSceneStatus() {
    if (!m_context) {
        return;
    }

    auto& sceneManager = m_context->GetSceneManager();
    std::string sceneLabel = sceneManager.HasActiveScene() ? sceneManager.GetCurrentSceneName() : "No Scene";
    if (sceneLabel.empty()) {
        sceneLabel = "Untitled Scene";
    }

    std::string fileLabel = sceneManager.GetCurrentScenePath().empty()
        ? "Unsaved.xc"
        : std::filesystem::path(sceneManager.GetCurrentScenePath()).filename().string();

    const bool dirty = sceneManager.IsSceneDirty();
    const std::string statusText = dirty ? (std::string("* ") + fileLabel) : fileLabel;
    UI::DrawRightAlignedText(
        statusText.c_str(),
        dirty ? UI::MenuBarStatusDirtyColor() : UI::MenuBarStatusIdleColor());

    if (ImGui::IsItemHovered()) {
        UI::BeginTitledTooltip("Scene");
        ImGui::Text("Name: %s", sceneLabel.c_str());
        ImGui::Text("File: %s", fileLabel.c_str());
        ImGui::Text("State: %s", dirty ? "Modified" : "Saved");
        ImGui::Text("Path: %s", sceneManager.GetCurrentScenePath().empty() ? "(not saved yet)" : sceneManager.GetCurrentScenePath().c_str());
        UI::EndTitledTooltip();
    }
}

}
}