#include "itemstore.h"
#include <QJsonArray>
#include <QDebug>
#include "train.h"
#include "../trainjs.h"

ItemStore::ItemStore(QObject *parent): QObject(parent)
{
}

void ItemStore::addItem(std::shared_ptr<Item> item)
{
	if(!item)
	{
		qWarning()<<"invalid item";
		return;
	}
    bool mached = false;
    for(unsigned i = 0; i < items_.size(); i++ )
        if(*items_[i] == *item) mached = true;
    if(!mached)
    {
        items_.push_back(std::shared_ptr<Item>(item));

		if(dynamic_cast<Train*>(item.get()))
		{
			std::vector<std::shared_ptr<TrainJs>> joysticks = TrainJs::getJsDevices();
			for(auto joystick: joysticks)
			{
				if(!joystick->itemIsSet())
				{
					joystick->setItem(item);
					connect(joystick.get(), &TrainJs::reqNewItem, this, &ItemStore::jsReqNewItem);
					break;
				}
			}
		}

        itemAdded(std::weak_ptr<Item>(items_.back()));
    }
    qDebug()<<"Got item: "<<item->id()<<" matched: "<<mached;
}

void ItemStore::jsReqNewItem()
{
	if(items_.empty())
		return;

	qDebug()<<__func__<<"new item requested";

	std::vector<std::shared_ptr<TrainJs>> joysticks = TrainJs::getJsDevices();
	for(auto joystick: joysticks)
	{
		if(joystick->getWantsNewItem())
		{
			std::shared_ptr<Item> oldItem = joystick->getItem().lock();
			for(size_t i = 0; i < items_.size(); ++i)
			{
				if(!oldItem || *items_[i] == *oldItem)
				{
					if(i+1 < items_.size())
						joystick->setItem(items_[i+1]);
					else
						joystick->setItem(items_[0]);
					break;
				}
			}
		}
	}
}

void ItemStore::addItems(const std::vector<std::shared_ptr<Item>>& itemIn)
{
    for(unsigned j = 0; j < itemIn.size(); j++)
        addItem(itemIn[j]);

}

void ItemStore::removeItem(const ItemData& item)
{
    for(unsigned j = 0; j < items_.size(); j++)
    {
        if(item == *items_[j])
        {
            items_.erase(items_.begin()+j);
            --j;
        }
    }
}


void ItemStore::clear()
{
    for(size_t i = 0; i < items_.size(); ++i) itemDeleted(*items_[i]);
    items_.clear();
}


void ItemStore::itemStateChanged(const ItemData& item)
{

     for(unsigned i = 0; i < items_.size(); i++ )
     {
         if(items_[i]->operator==(item))
         {

            if(items_[i]->getValue() != item.getValue())items_[i]->informValue(item.getValue());
         }

     }

}