#pragma once

#include <string>
#include <utils.hpp>
#include <object/transform.hpp>
#include <SDL3/SDL.h>
#include <SDL3_image/SDL_image.h>
#include <utility>
#include <memory>
#include <renderer/renderer.hpp>
#include <vector>
#include <object/components/component.hpp>

namespace Game::Renderer {
    class Renderer;
    class Texture;
}

namespace Game::Object {
    class Entity {
        public:
            Entity(std::string name, std::shared_ptr<Game::Renderer::Texture> tex, Transform transform) : mName(name), mTex(tex), mTransform(transform), mIsActive(true) { LOG("Created Entity: " << mName); }
            // I will define the copy and move constructors later - just deleted for now
            Entity(const Entity&);
            Entity& operator=(const Entity&);
            Entity(Entity&&) noexcept;
            Entity& operator=(Entity&&) noexcept;
            virtual ~Entity() = 0; // Destructor

            // Start is called when the entity is spawned
            virtual void start() = 0;
            // Update is called every update cycle; deltaTime is the time (in seconds) since the last update call
            virtual void update(float deltaTime) = 0;
            virtual void onWindowResized(int newWidth, int newHeight) {} // Called when the window is resized, with the new width and height in pixels
            virtual void destroyed() {}; // Pre-destruction call
            void render(Game::Renderer::Renderer* renderer, Game::Renderer::RendererConfig config);

            // Collision calls
            // Called once when a collision begins
            virtual void onCollisionEnter(Entity* other) {}
            // Called every update while a collision continues
            virtual void onCollisionStay(Entity* other) {}
            // Called once when a collision ends
            virtual void onCollisionExit(Entity* other) {}

            // Setters and getters
            void setTexture(std::shared_ptr<Game::Renderer::Texture> tex) { mTex = tex; }
            void setName(const std::string& name) { mName = name; }
            void setTransform(const Transform& transform) { mTransform = transform; }
            void setActive(bool active) { mIsActive = active; }
            std::shared_ptr<Game::Renderer::Texture> getTexture() { return mTex; }
            std::string getName() { return mName; }
            Transform* getTransform() { return &mTransform; }
            bool isActive() { return mIsActive; }
            int getZIndex() const { return mZIndex; }

            // Component management
            template<typename T, typename... Args>
            T* addComponent(Args&&... args);
            template<typename T>
            T* getComponent();
            template<typename T>
            bool removeComponent();
            void updateComponents(float deltaTime);

        protected:
            std::string mName;
            std::shared_ptr<Game::Renderer::Texture> mTex;
            Transform mTransform;
            bool mIsFlipped = false; // Whether the texture should be rendered flipped horizontally or not
            bool mIsActive = true;
            bool mIsVisible = true;
            int mZIndex = 0; // For rendering order; higher zIndex renders on top of lower zIndex
            float mTiledScale = 1.f; // Only used if the texture is tiled, to determine how much to scale the texture when rendering (since the entire texture is rendered as a single tile, this is necessary to be able to have different sized tiles)
            std::vector<std::unique_ptr<Object::Components::Component>> mComponents; // Components attached to this entity; TODO
        private:
    };

    template<typename T, typename... Args>
    T* Entity::addComponent(Args&&... args) {
        static_assert(std::is_base_of_v<Object::Components::Component, T>, "T must derive from Component");
        auto component = std::make_unique<T>(std::forward<Args>(args)...);
        T* componentPtr = component.get();
        mComponents.push_back(std::move(component));
        return componentPtr;
    }

    template<typename T>
    T* Entity::getComponent() {
        static_assert(std::is_base_of_v<Object::Components::Component, T>, "T must derive from Component");
        for (const auto& component : mComponents) {
            if (auto casted = dynamic_cast<T*>(component.get())) {
                return casted;
            }
        }
        return nullptr;
    }

    template<typename T>
    bool Entity::removeComponent() {
        static_assert(std::is_base_of_v<Object::Components::Component, T>, "T must derive from Component");
        for (auto it = mComponents.begin(); it != mComponents.end(); it++) {
            if (dynamic_cast<T*>(it->get())) {
                mComponents.erase(it);
                return true;
            }
        }
        return false;
    }
}