/**
 * kmacctimap.cpp
 *
 * Copyright (c) 2000-2001 Michael Haeckel <Michael@Haeckel.Net>
 *
 * This file is based on kmacctexppop.cpp by Don Sanders
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; version 2 of the License
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "kmacctimap.moc"

#include "kmbroadcaststatus.h"
#include "kmfoldertree.h"
#include "kmfoldermgr.h"
#include "kmfiltermgr.h"

#include <kmfolderimap.h>
#include <kio/passdlg.h>
#include <kio/scheduler.h>
#include <kio/slave.h>
#include <kmessagebox.h>
#include <kdebug.h>

#include <qregexp.h>

#include <netdb.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <netinet/in.h>


//-----------------------------------------------------------------------------
KMAcctImap::KMAcctImap(KMAcctMgr* aOwner, const QString& aAccountName):
  KMAcctImapInherited(aOwner, aAccountName)
{
  init();
  mSlave = NULL;
  mTotal = 0;
  mFolder = 0;
  connect(KMBroadcastStatus::instance(), SIGNAL(signalAbortRequested()),
          this, SLOT(slotAbortRequested()));
  connect(&mIdleTimer, SIGNAL(timeout()), SLOT(slotIdleTimeout()));
  KIO::Scheduler::connect(
    SIGNAL(slaveError(KIO::Slave *, int, const QString &)),
    this, SLOT(slotSlaveError(KIO::Slave *, int, const QString &)));
}


//-----------------------------------------------------------------------------
KMAcctImap::~KMAcctImap()
{
  killAllJobs();
  if (mSlave) KIO::Scheduler::disconnectSlave(mSlave);
  emit deleted(this);
}


//-----------------------------------------------------------------------------
QString KMAcctImap::type(void) const
{
  return "imap";
}

//-----------------------------------------------------------------------------
void KMAcctImap::init(void)
{
  mHost   = "";
  struct servent *serv = getservbyname("imap-4", "tcp");
  if (serv) {
    mPort = ntohs(serv->s_port);
  } else {
    mPort = 143;
  }
  mLogin  = "";
  mPasswd = "";
  mAuth = "*";
  mStorePasswd = FALSE;
  mAskAgain = FALSE;
  mProgressEnabled = FALSE;
  mPrefix = "/";
  mAutoExpunge = TRUE;
  mHiddenFolders = FALSE;
  mOnlySubscribedFolders = FALSE;
  mUseSSL = FALSE;
  mUseTLS = FALSE;
  mIdle = TRUE;
}

//-----------------------------------------------------------------------------
void KMAcctImap::pseudoAssign(KMAccount* account)
{
  mIdleTimer.stop();
  killAllJobs();
  if (mSlave) KIO::Scheduler::disconnectSlave(mSlave);
  mSlave = NULL;
  if (mFolder)
  {
    mFolder->setContentState(KMFolderImap::imapNoInformation);
    mFolder->setSubfolderState(KMFolderImap::imapNoInformation);
  }
  assert(account->type() == "imap");
  KMAcctImap *acct = static_cast<KMAcctImap*>(account);
  setName(acct->name());
  setCheckInterval(acct->checkInterval());
  setCheckExclude(acct->checkExclude());
  setFolder(acct->folder());
  setHost(acct->host());
  setPort(acct->port());
  setPrefix(acct->prefix());
  setLogin(acct->login());
  setTrash(acct->trash());
  setAuth(acct->auth());
  setAutoExpunge(acct->autoExpunge());
  setHiddenFolders(acct->hiddenFolders());
  setOnlySubscribedFolders(acct->onlySubscribedFolders());
  setStorePasswd(acct->storePasswd());
  setPasswd(acct->passwd(), acct->storePasswd());
  setUseSSL(acct->useSSL());
  setUseTLS(acct->useTLS());
}

//-----------------------------------------------------------------------------
void KMAcctImap::readConfig(KConfig& config)
{
  KMAcctImapInherited::readConfig(config);

  mLogin = config.readEntry("login", "");
  mStorePasswd = config.readNumEntry("store-passwd", FALSE);
  if (mStorePasswd) mPasswd = config.readEntry("pass");
  else mPasswd = "";
  mHost = config.readEntry("host");
  mPort = config.readNumEntry("port");
  mAuth = config.readEntry("auth", "*");
  mPrefix = config.readEntry("prefix", "/");
  mTrash = config.readEntry("trash");
  if (mFolder) mFolder->setImapPath(mPrefix);
  mAutoExpunge = config.readBoolEntry("auto-expunge", TRUE);
  mHiddenFolders = config.readBoolEntry("hidden-folders", FALSE);
  mOnlySubscribedFolders = config.readBoolEntry("subscribed-folders", FALSE);
  mUseSSL = config.readBoolEntry("use-ssl", FALSE);
  mUseTLS = config.readBoolEntry("use-tls", FALSE);
}


//-----------------------------------------------------------------------------
void KMAcctImap::writeConfig(KConfig& config)
{
  KMAcctImapInherited::writeConfig(config);

  config.writeEntry("login", mLogin);
  config.writeEntry("store-passwd", mStorePasswd);
  if (mStorePasswd) config.writeEntry("pass", mPasswd);
  else config.writeEntry("passwd", "");

  config.writeEntry("host", mHost);
  config.writeEntry("port", static_cast<int>(mPort));
  config.writeEntry("auth", mAuth);
  config.writeEntry("prefix", mPrefix);
  config.writeEntry("trash", mTrash);
  config.writeEntry("auto-expunge", mAutoExpunge);
  config.writeEntry("hidden-folders", mHiddenFolders);
  config.writeEntry("subscribed-folders", mOnlySubscribedFolders);
  config.writeEntry("use-ssl", mUseSSL);
  config.writeEntry("use-tls", mUseTLS);
}


//-----------------------------------------------------------------------------
void KMAcctImap::setStorePasswd(bool b)
{
  mStorePasswd = b;
}


//-----------------------------------------------------------------------------
void KMAcctImap::setUseSSL(bool b)
{
  mUseSSL = b;
}


//-----------------------------------------------------------------------------
void KMAcctImap::setUseTLS(bool b)
{
  mUseTLS = b;
}


//-----------------------------------------------------------------------------
void KMAcctImap::setLogin(const QString& aLogin)
{
  mLogin = aLogin;
}


//-----------------------------------------------------------------------------
QString KMAcctImap::passwd(void) const
{
  return decryptStr(mPasswd);
}


//-----------------------------------------------------------------------------
void KMAcctImap::setPasswd(const QString& aPasswd, bool aStoreInConfig)
{
  mPasswd = encryptStr(aPasswd);
  mStorePasswd = aStoreInConfig;
}


//-----------------------------------------------------------------------------
void KMAcctImap::setHost(const QString& aHost)
{
  mHost = aHost;
}


//-----------------------------------------------------------------------------
void KMAcctImap::setPort(unsigned short int aPort)
{
  mPort = aPort;
}


//-----------------------------------------------------------------------------
void KMAcctImap::setPrefix(const QString& aPrefix)
{
  mPrefix = aPrefix;
  mPrefix.replace(QRegExp("[%*\"]"), "");
  if (mPrefix.isEmpty() || mPrefix.at(0) != '/') mPrefix = '/' + mPrefix;
  if (mPrefix.at(mPrefix.length() - 1) != '/') mPrefix += '/';
  if (mFolder) mFolder->setImapPath(mPrefix);
}

//-----------------------------------------------------------------------------
void KMAcctImap::setTrash(const QString& aTrash)
{
  mTrash = aTrash;
}


//-----------------------------------------------------------------------------
void KMAcctImap::setImapFolder(KMFolderImap *aFolder)
{
  mFolder = aFolder;
  mFolder->setImapPath(mPrefix);
}


//-----------------------------------------------------------------------------
void KMAcctImap::initJobData(jobData &jd)
{
  jd.total = 1;
  jd.done = 0;
  jd.parent = NULL;
  jd.quiet = FALSE;
  jd.inboxOnly = FALSE;
}


//-----------------------------------------------------------------------------
void KMAcctImap::setAutoExpunge(bool aAutoExpunge)
{
  mAutoExpunge = aAutoExpunge;
}

//-----------------------------------------------------------------------------
void KMAcctImap::setHiddenFolders(bool aHiddenFolders)
{
  mHiddenFolders = aHiddenFolders;
}


//-----------------------------------------------------------------------------
void KMAcctImap::setOnlySubscribedFolders(bool aOnlySubscribedFolders)
{
  mOnlySubscribedFolders = aOnlySubscribedFolders;
}


//-----------------------------------------------------------------------------
void KMAcctImap::setAuth(const QString& aAuth)
{
  mAuth = aAuth;
}


//-----------------------------------------------------------------------------
void KMAcctImap::initSlaveConfig()
{
  mSlaveConfig.clear();
  mSlaveConfig.insert("auth", mAuth);
  mSlaveConfig.insert("tls", (mUseTLS) ? "on" : "off");
  if (mAutoExpunge) mSlaveConfig.insert("expunge", "auto");
}


//-----------------------------------------------------------------------------
KURL KMAcctImap::getUrl()
{
  KURL url;
  url.setProtocol(mUseSSL ? QString("imaps") : QString("imap"));
  url.setUser(mLogin);
  url.setPass(decryptStr(mPasswd));
  url.setHost(mHost);
  url.setPort(mPort);
  return url;
}
 
 
//-----------------------------------------------------------------------------
bool KMAcctImap::makeConnection()
{
  if (mSlave) return TRUE;

  if(mAskAgain || mPasswd.isEmpty() || mLogin.isEmpty())
  {
    QString passwd = decryptStr(mPasswd);
    bool b = FALSE;
    if (KIO::PasswordDialog::getNameAndPassword(mLogin, passwd, &b,
      i18n("You need to supply a username and a password to access this "
      "mailbox."), FALSE, QString::null, mName, i18n("Account:"))
      != QDialog::Accepted)
    {
      emit finishedCheck(false);
      return FALSE;
    } else mPasswd = encryptStr(passwd);
  }

  initSlaveConfig();
  mSlave = KIO::Scheduler::getConnectedSlave(getUrl(), mSlaveConfig);
  if (!mSlave)
  {
    KMessageBox::error(0, QString("Could not start process for %1.")
      .arg(getUrl().protocol()));
    return FALSE;
  }
  return TRUE;
}
 
 
//-----------------------------------------------------------------------------
void KMAcctImap::slotSlaveError(KIO::Slave *aSlave, int errorCode,
  const QString &errorMsg)
{
  if (aSlave != mSlave) return;
  if (errorCode == KIO::ERR_SLAVE_DIED) mSlave = NULL;
  if (errorCode == KIO::ERR_COULD_NOT_LOGIN && !mStorePasswd) mAskAgain = TRUE;
  KMessageBox::error(0, KIO::buildErrorString(errorCode, errorMsg));
  killAllJobs();
}


//-----------------------------------------------------------------------------
void KMAcctImap::displayProgress()
{
  if (mProgressEnabled == mapJobData.isEmpty())
  {
    mProgressEnabled = !mapJobData.isEmpty();
    KMBroadcastStatus::instance()->setStatusProgressEnable( mProgressEnabled );
    if (!mProgressEnabled) kernel->filterMgr()->cleanup();
  }
  mIdle = FALSE;
  if (mapJobData.isEmpty())
    mIdleTimer.start(15000);
  else
    mIdleTimer.stop();
  int total = 0, done = 0;
  for (QMap<KIO::Job*, jobData>::Iterator it = mapJobData.begin();
    it != mapJobData.end(); it++)
  {
    total += (*it).total;
    done += (*it).done;
  }
  if (total == 0)
  {
    mTotal = 0;
    return;
  }
  if (total > mTotal) mTotal = total;
  done += mTotal - total;
  KMBroadcastStatus::instance()->setStatusProgressPercent( 100*done / mTotal );
}


//-----------------------------------------------------------------------------
void KMAcctImap::slotIdleTimeout()
{
  if (mIdle)
  {
    if (mSlave) KIO::Scheduler::disconnectSlave(mSlave);
    mSlave = NULL;
    mIdleTimer.stop();
  } else {
    if (mSlave)
    {
      KIO::SimpleJob *job = KIO::special(getUrl(), QCString("NOOP"), FALSE);
      KIO::Scheduler::assignJobToSlave(mSlave, job);
      connect(job, SIGNAL(result(KIO::Job *)),
        this, SLOT(slotSimpleResult(KIO::Job *)));
    }
    else mIdleTimer.stop();
  }
}


//-----------------------------------------------------------------------------
void KMAcctImap::slotAbortRequested()
{
  killAllJobs();
}


//-----------------------------------------------------------------------------
void KMAcctImap::killAllJobs()
{
  QMap<KIO::Job*, jobData>::Iterator it = mapJobData.begin();
  for (it = mapJobData.begin(); it != mapJobData.end(); it++)
    if ((*it).parent)
    {
      KMFolderImap *fld = (*it).parent;
      fld->setContentState(KMFolderImap::imapNoInformation);
      fld->setSubfolderState(KMFolderImap::imapNoInformation);
      fld->sendFolderComplete(FALSE);
      fld->quiet(FALSE);
    }
  if (mapJobData.begin() != mapJobData.end())
  {
    mSlave->kill();
    mSlave = NULL;
  }
  mapJobData.clear();
  mJobList.setAutoDelete(true);
  mJobList.clear();
  mJobList.setAutoDelete(false);
  displayProgress();
}


//-----------------------------------------------------------------------------
void KMAcctImap::killJobsForItem(KMFolderTreeItem * fti)
{
  QMap<KIO::Job *, jobData>::Iterator it = mapJobData.begin();
  while (it != mapJobData.end())
  {
    if (it.data().parent == fti->folder)
    {
      killAllJobs();
      break;
    }
    else it++;
  }
}


//-----------------------------------------------------------------------------
void KMAcctImap::slotSimpleResult(KIO::Job * job)
{
  QMap<KIO::Job *, jobData>::Iterator it = mapJobData.find(job);
  bool quiet = FALSE;
  if (it != mapJobData.end())
  {
    quiet = (*it).quiet;
    mapJobData.remove(it);
  }
  if (job->error())
  {
    if (!quiet) job->showErrorDialog();
    if (job->error() == KIO::ERR_SLAVE_DIED) mSlave = NULL;
  }
  displayProgress();
}


//-----------------------------------------------------------------------------
void KMAcctImap::processNewMail(bool interactive)
{
  if (!mFolder || !mFolder->child())
  {
    emit finishedCheck(false);
    return;
  }
  QStringList strList;
  QValueList<QGuardedPtr<KMFolder> > folderList;
  kernel->imapFolderMgr()->createFolderList(&strList, &folderList,
    mFolder->child(), QString::null, false);
  QValueList<QGuardedPtr<KMFolder> >::Iterator it;
  for (it = folderList.begin(); it != folderList.end(); it++)
  {
    KMFolder *folder = *it;
    if (folder && !folder->noContent())
    {
      KMFolderImap *imapFolder = static_cast<KMFolderImap*>(folder);
      if (imapFolder->getContentState() != KMFolderImap::imapInProgress)
      {
        if (imapFolder->isSelected())
          imapFolder->getFolder();
        else imapFolder->processNewMail(interactive);
      }
    }
  }
  emit finishedCheck(false);
}