#include "../../YoggieEngine/src/EntryPoint.h"
#include <mini/ini.h>
#include <glm/glm.hpp>
#include <glm/gtc/type_ptr.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include "AssetManagement/SceneSerializer.h"
#include "AssetManagement/AssetManager.h"
#include "Views/Viewport.h"
#include "PropertyPanels/SceneExplorer.h"
#include "AssetManagement/AssetFinder.h"
#include "MainMenuBar.h"
#include "PropertyPanels/Inspector.h"
#include "Project/ProjectInfo.h"
#include "Runtime/RuntimeControls.h"
#include "Project/Settings.h"
#include "Console.h"

using namespace YoggieEngine;

class Editor : public Application {
public:
    Editor() : Application("Editor"){}

    void Run() override
    {
        std::string path = (std::filesystem::current_path()).string();
        project.setProjectDirectory(path);

        AssetManager::Init();
        AssetManager::setAssetPath(project.GetProjectDirectory());
        AssetManager::BuildAssetView();

        LoadLastOrEmptyProject();

        ProjectInfo projectInfo(project);
        Viewport sceneview = Viewport(scene);
        RuntimeControls rc = RuntimeControls();
        SceneExplorer explorer(Selected, scene);
        Inspector inspector = Inspector(Selected);
        Settings settings = Settings();
       // AssetFinder assetsView = AssetFinder();
        Console console = Console();

        Selected = YoggieEngine::Entity((entt::entity) -1, &scene);

        double previous = glfwGetTime();
        double lag = 0.0;
        while (!appWindow->WindowShouldClose())
        {
            PollEvents();
            double now = glfwGetTime();
            double elapsed = now - previous ;
            previous = now;
            lag += elapsed;

            scene.Update();

            if (sceneview.isFocused) {
                UpdateSceneCamera(sceneview);

                std::cout << "Scene view in Focus!\r" ;
            }

            GuiBegin();
            
            
            {
                MainMenuBar menuBar = MainMenuBar();

                // Show a menu bar
                menuBar.ApplicationMenu(project);
                menuBar.SceneMenu(project, scene);
                menuBar.SelectMenu();
                menuBar.WindowMenu();
                menuBar.DebugMenu();
                menuBar.Help();

            }
          
            projectInfo.Update();
            sceneview.Update();
            rc.Update();
            explorer.Update();
            settings.Update();
            inspector.Update();
            console.Update();
            
            ImGui::ShowDemoWindow();
            ImGui::ShowMetricsWindow();

            
            GuiEnd();
            SwapBuffers();
        }
    }


    void LoadLastOrEmptyProject() {
        // Check if there is a last known loaded project and 
       // load that one .

       // Otherwise load no project..
       // OR 
       // Load an empty project.
        mINI::INIStructure ini;

        if (std::filesystem::exists("build\\Debug\\Editor.ini")) 
        {
            mINI::INIFile file("build\\Debug\\Editor.ini");   
            file.read(ini);
        }
        else 
        {
            spdlog::debug("Could not find an `Editor.ini` file.");
        }

        if (ini["editor"]["openlastproject"] == "TRUE") 
        {
            Project::LoadProject(ini["cache"]["project"], project);
            LoadScene(ini["cache"]["scene"], scene);

        }
        else
        {
            spdlog::debug("Starting without a project. Please create one.");
        }
    }

private:
    bool SimulatePhysics = true;
    YoggieEngine::Entity  Selected;
    Project project;
    Scene scene;


    void UpdateSceneCamera(Viewport& sceneview) {
        const float movement_speed = 0.1f;
        static float lastX = 400, lastY = 300;
        const float sensitivity = 0.1;
        static bool firstMouse = true;

        if (MouseButtonPressed(YOGGIE_MOUSE_BUTTON_RIGHT)) {

            glfwSetInputMode((GLFWwindow*)appWindow->GetHandle(), GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
            auto newX = getCursorPosX(appWindow);
            auto newY = getCursorPosY(appWindow);

            if (firstMouse)
            {
                lastX = newX;
                lastY = newY;
                firstMouse = false;
            }


            float xoffset = newX - lastX;
            float yoffset = newY - lastY;

            lastX = newX;
            lastY = newY;

            xoffset *= sensitivity;
            yoffset *= sensitivity;

            sceneview.cam.yaw += xoffset;
            sceneview.cam.pitch += yoffset;

            if (sceneview.cam.pitch > 89.0f)
                sceneview.cam.pitch = 89.0f;
            if (sceneview.cam.pitch < -89.0f)
                sceneview.cam.pitch = -89.0f;

        }
        else if (firstMouse == false)
        {
            glfwSetInputMode((GLFWwindow*)appWindow->GetHandle(), GLFW_CURSOR, GLFW_CURSOR_NORMAL);
            firstMouse = true;
        }

        // Check for Camara movement input here!
        if (keyIsPressed(YOGGIE_KEY_W)) {
            sceneview.cam.Position += sceneview.cam.Front * movement_speed;
            std::cout << "Pressed W !" << std::endl;
        }

        if (keyIsPressed(YOGGIE_KEY_A))
            sceneview.cam.Position -= sceneview.cam.Right * movement_speed;

        if (keyIsPressed(YOGGIE_KEY_S))
            sceneview.cam.Position -= sceneview.cam.Front * movement_speed;

        if (keyIsPressed(YOGGIE_KEY_D))
            sceneview.cam.Position += sceneview.cam.Right * movement_speed;
    }

};

YoggieEngine::Application* CreateApplication() {
   
    return new Editor();

}