/**
 *  @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() {}

UnsubscribeOperator::~UnsubscribeOperator() {}

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

Session::State UnsubscribeOperator::getState() const
{
  return Session::State(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 ProcessResult::NO;
  }

  depot.saveSubscribes();

  return ProcessResult::OK;
}

Parser::ParseResult UnsubscribeOperator::parse(Request &c_in, Parser &p)
{
  Session &session = Session::getInstance();

  if (c_in.getUidMode()) return Parser::ParseResult::REJECT;

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

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

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

  c_in.setMailbox(mailbox);

  return Parser::ParseResult::ACCEPT;
}