#include "Fr_Fcfs.h"
#include "../../common/dramExtension.h"
#include "../core/configuration/Configuration.h"
#include <algorithm>

using namespace std;



void FR_FCFS::schedule(gp *payload)
{
    buffer[DramExtension::getExtension(payload).getBank()].emplace_back(payload);
}

std::pair<Command, gp*> FR_FCFS::getNextRequest(Bank bank)
{
    if(buffer[bank].empty())
    {
        return pair<Command, tlm::tlm_generic_payload*>(Command::NOP, NULL);
    }

    deque<gp*>::iterator it = FindRowHit(bank);
    if(it != buffer[bank].end())
    {
        gp* payload = *it;
        buffer[bank].erase(it);
        return pair<Command, gp*>(getReadWriteCommand(*payload), payload);
    }

    return pair<Command, gp*>(getNextCommand(buffer[bank].front()), buffer[bank].front());
}

deque<gp*>::iterator FR_FCFS::FindRowHit(Bank bank)
{
    deque<gp*> &queue = buffer[bank];

    if(!controllerCore.getRowBufferStates().rowBufferIsOpen(bank))
        return queue.end();

    for(auto it = queue.begin(); it!=queue.end(); it++)
    {
        gp* payload = *it;
        //Found row-hit
        if(DramExtension::getRow(payload) == controllerCore.getRowBufferStates().getRowInRowBuffer(bank))
        {
            return it;
        }
    }
    return queue.end();
}