/**

GDevelop - LinkedObjects Extension
Copyright (c) 2011-2016 Florian Rival (Florian.Rival@gmail.com)
This project is released under the MIT License.
*/

#include "ObjectsLinksManager.h"

#include "LinkedObjectsTools.h"
#include <iostream>
#include <string>

#include <memory>
#include "GDCpp/Runtime/RuntimeObject.h"
#include "GDCpp/Runtime/RuntimeScene.h"

using namespace std;

namespace GDpriv
{
namespace LinkedObjects
{

void ObjectsLinksManager::LinkObjects(RuntimeObject * a, RuntimeObject * b)
{
    {
        std::set< RuntimeObject * > & objectLinks = links[a];
        objectLinks.insert(b);
    }
    {
        std::set< RuntimeObject * > & objectLinks = links[b];
        objectLinks.insert(a);
    }
}

void ObjectsLinksManager::RemoveLinkBetween(RuntimeObject * a, RuntimeObject * b)
{
    {
        std::set< RuntimeObject * > & objectLinks = links[a];
        objectLinks.erase(b);
    }
    {
        std::set< RuntimeObject * > & objectLinks = links[b];
        objectLinks.erase(a);
    }
}

void ObjectsLinksManager::RemoveAllLinksOf(RuntimeObject * object)
{
    std::set< RuntimeObject * > & objectLinks = links[object];
    for (std::set< RuntimeObject * >::iterator linkedObj = objectLinks.begin();linkedObj != objectLinks.end();++linkedObj)
    {
        std::set< RuntimeObject * > & linkedObjectLinks = links[*linkedObj];
        linkedObjectLinks.erase(object);
    }

    links.erase(object); //Remove all links of object
}

std::vector< RuntimeObject* > ObjectsLinksManager::GetObjectsLinkedWith(RuntimeObject * object)
{
    //Get links of object
    const std::set< RuntimeObject * > & objectLinks = links[object];
    std::vector< RuntimeObject* > list; list.reserve(objectLinks.size());

    //Create the list, avoiding dead links or links to just deleted objects
    for (std::set< RuntimeObject * >::iterator linkedObj = objectLinks.begin();linkedObj != objectLinks.end();++linkedObj)
    {
        if ( !(*linkedObj)->GetName().empty() )
            list.push_back((*linkedObj));
    }

    return list;
}

void ObjectsLinksManager::ClearAll()
{
    links.clear();
}


}
}