#pragma once

class Action
{
public:
    virtual void run() = 0;
    virtual void undo() = 0;
    virtual size_t memory() = 0;
    virtual ~Action(){};
};

class ActionManager
{
public:
    static ActionManager I;
    std::stack<std::unique_ptr<Action>> m_actions;
    size_t m_memory = 0;
    static void add(Action* action)
    {
        I.m_actions.emplace(action);
        I.m_memory += action->memory();
        LOG("History: %.2f KB", I.m_memory / 1024.f);
    }
    static void undo()
    {
        I.m_actions.top()->undo();
        I.m_memory -= I.m_actions.top()->memory();
        I.m_actions.pop();
        LOG("History: %.2f KB", I.m_memory / 1024.f);
    }
    static bool empty()
    {
        return I.m_actions.empty();
    }
};