#include "script.h"

#include <SDL3/SDL_log.h>

Script::Script(sol::state& lua, const std::string& filepath) : m_lua(lua) {
    auto result = m_lua.safe_script_file(filepath, sol::script_pass_on_error);
    if (!result.valid()) {
        sol::error err = result;
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to load script '%s': %s",
                     filepath.c_str(), err.what());
        return;
    }

    // Bind lifecycle functions
    sol::object createObj = m_lua["_create"];
    if (createObj.is<sol::protected_function>()) {
        m_create = createObj.as<sol::protected_function>();
        m_hasCreate = true;
    }

    sol::object updateObj = m_lua["_update"];
    if (updateObj.is<sol::protected_function>()) {
        m_update = updateObj.as<sol::protected_function>();
    } else {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Script '%s' missing required '_update(dt)' function",
                     filepath.c_str());
    }

    sol::object renderObj = m_lua["_render"];
    if (renderObj.is<sol::protected_function>()) {
        m_render = renderObj.as<sol::protected_function>();
    } else {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Script '%s' missing required '_render' function",
                     filepath.c_str());
    }

    sol::object destroyObj = m_lua["_destroy"];
    if (destroyObj.is<sol::protected_function>()) {
        m_destroy = destroyObj.as<sol::protected_function>();
        m_hasDestroy = true;
    }
}

Script::~Script() {
    Destroy();
}

void Script::Create() {
    if (!m_hasCreate) return;
    auto result = m_create();
    if (!result.valid()) {
        sol::error err = result;
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "_create error: %s", err.what());
    }
}

void Script::Update(float dt) {
    if (!m_update.valid()) return;
    auto result = m_update(dt);
    if (!result.valid()) {
        sol::error err = result;
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "_update error: %s", err.what());
    }
}

void Script::Render() {
    if (!m_render.valid()) return;
    auto result = m_render();
    if (!result.valid()) {
        sol::error err = result;
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "_render error: %s", err.what());
    }
}

void Script::Destroy() {
    if (!m_hasDestroy) return;
    auto result = m_destroy();
    if (!result.valid()) {
        sol::error err = result;
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "_destroy error: %s", err.what());
    }
    m_hasDestroy = false; // Prevent double-destroy
}