#pragma once

#include <optional>
#include <vector>

#include <QVector2D>

#include "EcsComponents.h"
#include "Tick.h"

#include "entt/entity/entity.hpp"

class EntityAdmin;

struct ScrapInfo
{
    entt::entity entity;
    QVector2D position;
};

class ScrapSystem
{
public:
    explicit ScrapSystem(EntityAdmin& admin);

    entt::entity spawn(QVector2D position, int amount, Tick despawnAt);
    void         tickDespawn(Tick currentTick);

    // Removes the scrap and returns its amount, or nullopt if not found.
    std::optional<int> consume(entt::entity entity);

    // Lightweight snapshot for callers that need to iterate all scrap.
    std::vector<ScrapInfo> allScrapInfo() const;

private:
    EntityAdmin& m_admin;
};