/**
 *  @file  operator-unsubscribe.cc
 *  @brief Implementation of the UNSUBSCRIBE command.
 *  @author Andreas Aardal Hanssen
 *  @date 2002-2005
 */

#include "convert.h"
#include "depot.h"
#include "operators.h"
#include "recursivedescent.h"
#include "session.h"

#include <iostream>
#include <string>
#include <vector>

#include <sys/stat.h>

using namespace Binc;
using std::string;

UnsubscribeOperator::UnsubscribeOperator(void) {}

UnsubscribeOperator::~UnsubscribeOperator(void) {}

const string UnsubscribeOperator::getName(void) const
{
  return "UNSUBSCRIBE";
}

int UnsubscribeOperator::getState(void) const
{
  return Session::AUTHENTICATED | Session::SELECTED;
}

Operator::ProcessResult UnsubscribeOperator::process(Depot &depot, Request &command)
{
  const string &mailbox = command.getMailbox();
  const string &canonmailbox = toCanonMailbox(mailbox);

  depot.loadSubscribes();
  if (!depot.unsubscribeTo(canonmailbox)) {
    Session &session = Session::getInstance();
    session.setLastError("Not subscribed to " + toImapString(mailbox));
    return NO;
  }

  depot.saveSubscribes();

  return OK;
}

Operator::ParseResult UnsubscribeOperator::parse(Request &c_in) const
{
  Session &session = Session::getInstance();

  if (c_in.getUidMode()) return REJECT;

  Operator::ParseResult res;
  if ((res = expectSPACE()) != ACCEPT) {
    session.setLastError("Expected SPACE");
    return res;
  }

  string mailbox;
  if ((res = expectMailbox(mailbox)) != ACCEPT) {
    session.setLastError("Expected mailbox");
    return res;
  }

  if ((res = expectCRLF()) != ACCEPT) {
    session.setLastError("Expected CRLF");
    return res;
  }

  c_in.setMailbox(mailbox);

  return ACCEPT;
}