#include "World.hpp"

#include "Game/SaveMap/SaveMap.hpp"

World::World(GameInstance& game_instance) : game_instance_(game_instance)
{
}

World::~World()
{
    for (auto& i : actors_map)
        i.second->OnDestroy();
    actors_map.clear();
}

void World::BeginPlay()
{
    for (auto& i : actors_map)
        i.second->BeginPlay();
}

void World::Tick(double delta_time)
{
    for (auto& i : actors_map)
        i.second->Tick(delta_time);
}

std::shared_ptr<SaveMap> World::save()
{
    std::shared_ptr<SaveMap> save = std::make_shared<SaveMap>("World");
    
    std::vector<std::string> ActorsIDs;
    ActorsIDs.reserve(actors_map.size());
    std::list<std::shared_ptr<ISave>> actors;
    for (auto[it, flag] : actors_map)
    {
        ActorsIDs.push_back(it);
        actors.push_back(flag);
    }
    save->SaveVectorStrings("ActorsIDs", std::move(ActorsIDs));
    save->SaveListObject("Actors", std::move(actors));
    
    return save;
}

void World::load(std::shared_ptr<SaveMap> save)
{
    std::vector<std::string> actors_IDs = save->GetVectorString("ActorsIDs");
    std::list<std::shared_ptr<Actor>> act = std::move(reinterpret_cast<std::list<std::shared_ptr<Actor>>&>(save->GetListObject("Actors")));

    size_t i_id = 0;
    for (auto& i : act)
    {
        auto[it, flag] = actors_map.try_emplace(actors_IDs[i_id], i);
        it->second->world_ = this;
        it->second->name_ = it->first;
        i_id++;
    }
}

void World::DestroyActor(std::weak_ptr<Actor> ptr)
{
    std::shared_ptr<Actor> actor = ptr.lock();
    if (actor.get() == nullptr)
        return;
    
    std::string name = actor->GetName();
    actor->OnDestroy();
    actors_map.erase(name);
}