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// KMail Account Manager

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "accountmanager.h"

#include "kmaccount.h"
#include "kmacctfolder.h"
#include "kmacctmaildir.h"
#include "kmacctlocal.h"
#include "popaccount.h"
#include "kmacctimap.h"
#include "networkaccount.h"
#include "kmacctcachedimap.h"
#include "broadcaststatus.h"
#include "kmfiltermgr.h"
#include "globalsettings.h"

#include <dcopclient.h>
#include <klocale.h>
#include <kmessagebox.h>
#include <kdebug.h>
#include <kconfig.h>
#include <kapplication.h>

#include <tqregexp.h>
#include <tqvaluelist.h>

using namespace KMail;

//-----------------------------------------------------------------------------
AccountManager::AccountManager()
    :TQObject(), mNewMailArrived( false ), mInteractive( false ),
     mTotalNewMailsArrived( 0 ), mDisplaySummary( false )
{
  mAcctChecking.clear();
  mAcctTodo.clear();
}

//-----------------------------------------------------------------------------
AccountManager::~AccountManager()
{
  writeConfig( false );
}


//-----------------------------------------------------------------------------
void AccountManager::writeConfig( bool withSync )
{
  KConfig* config = KMKernel::config();
  TQString groupName;

  KConfigGroupSaver saver(config, "General");
  config->writeEntry("accounts", mAcctList.count());

  // first delete all account groups in the config file:
  TQStringList accountGroups =
    config->groupList().grep( TQRegExp( "Account \\d+" ) );
  for ( TQStringList::Iterator it = accountGroups.begin() ;
	it != accountGroups.end() ; ++it )
    config->deleteGroup( *it );

  // now write new account groups:
  int i = 1;
  for ( AccountList::ConstIterator it( mAcctList.begin() ), end( mAcctList.end() ); it != end; ++it, ++i ) {
    groupName.sprintf("Account %d", i);
    KConfigGroupSaver saver(config, groupName);
    (*it)->writeConfig(*config);
  }
  if (withSync) config->sync();
}


//-----------------------------------------------------------------------------
void AccountManager::readConfig(void)
{
  KConfig* config = KMKernel::config();
  KMAccount* acct;
  TQString acctType, acctName;
  TQCString groupName;
  int i, num;
  uint id;

  for ( AccountList::Iterator it( mAcctList.begin() ), end( mAcctList.end() ); it != end; ++it )
      delete *it;
  mAcctList.clear();

  KConfigGroup general(config, "General");
  num = general.readNumEntry("accounts", 0);

  for (i=1; i<=num; i++)
  {
    groupName.sprintf("Account %d", i);
    KConfigGroupSaver saver(config, groupName);
    acctType = config->readEntry("Type");
    // Provide backwards compatibility
    if (acctType == "advanced pop" || acctType == "experimental pop")
      acctType = "pop";
    acctName = config->readEntry("Name");
    id = config->readUnsignedNumEntry("Id", 0);
    if (acctName.isEmpty()) acctName = i18n("Account %1").arg(i);
    acct = create(acctType, acctName, id);
    if (!acct) continue;
    add(acct);
    acct->readConfig(*config);
  }
}


//-----------------------------------------------------------------------------
void AccountManager::singleCheckMail(KMAccount *account, bool interactive)
{
  mNewMailArrived = false;
  mInteractive = interactive;

 // if sync has been requested by the user then check if check-interval was disabled by user, if yes, then 
 // de-install the timer
 // Safe guard against an infinite sync loop (kolab/issue2607)
  if ( mInteractive ) 
      account->readTimerConfig();

  // queue the account
  mAcctTodo.append(account);

  if (account->checkingMail())
  {
    kdDebug(5006) << "account " << account->name() << " busy, queuing" << endl;
    return;
  }

  processNextCheck(false);
}

//-----------------------------------------------------------------------------
void AccountManager::processNextCheck( bool _newMail )
{
  kdDebug(5006) << "processNextCheck, remaining " << mAcctTodo.count() << endl;
  if ( _newMail )
    mNewMailArrived = true;

  for ( AccountList::Iterator it( mAcctChecking.begin() ), end( mAcctChecking.end() ); it != end;  ) {
    KMAccount* acct = *it;
    ++it;
    if ( acct->checkingMail() )
      continue;
    // check done
    kdDebug(5006) << "account " << acct->name() << " finished check" << endl;
    mAcctChecking.remove( acct );
    kmkernel->filterMgr()->deref();
    disconnect( acct, TQT_SIGNAL( finishedCheck( bool, CheckStatus ) ),
                      this, TQT_SLOT( processNextCheck( bool ) ) );
  }
  if ( mAcctChecking.isEmpty() ) {
    // all checks finished, display summary
    if ( mDisplaySummary )
      KPIM::BroadcastStatus::instance()->seStatusMsgTransmissionCompleted(
          mTotalNewMailsArrived );
    emit checkedMail( mNewMailArrived, mInteractive, mTotalNewInFolder );
    mTotalNewMailsArrived = 0;
    mTotalNewInFolder.clear();
    mDisplaySummary = false;
  }
  if ( mAcctTodo.isEmpty() ) return;

  TQString accountHostName;

  KMAccount *curAccount = 0;
  for ( AccountList::Iterator it ( mAcctTodo.begin() ), last ( mAcctTodo.end() ); it != last; ) {
    KMAccount *acct = *it;
    ++it;
    if ( !acct->checkingMail() && acct->mailCheckCanProceed() ) {
      curAccount = acct;
      mAcctTodo.remove( acct );
      break;
    }
  }
  if ( !curAccount ) return; // no account or all of them are already checking

  if ( curAccount->type() != "imap" && curAccount->type() != "cachedimap" &&
       curAccount->folder() == 0 ) {
    TQString tmp = i18n("Account %1 has no mailbox defined:\n"
        "mail checking aborted;\n"
        "check your account settings.")
      .arg(curAccount->name());
    KMessageBox::information(0,tmp);
    emit checkedMail( false, mInteractive, mTotalNewInFolder );
    mTotalNewMailsArrived = 0;
    mTotalNewInFolder.clear();
    return;
  }

  if ( curAccount->type() == "imap" || curAccount->type() == "cachedimap" || curAccount->type() == "pop" )
  {
    // Check with the network status daemon whether the network is available
    const int NetWorkStatusUnknown = 1;
    const int NetWorkStatusOnline = 8;
    TQCString replyType;
    TQByteArray params;
    TQByteArray reply;

    TQDataStream stream( params, IO_WriteOnly );
    stream << static_cast<NetworkAccount*>( curAccount )->host();

    if ( kapp->dcopClient()->call( "kded", "networkstatus", "status(TQString)",
                            params, replyType, reply ) && ( replyType == "int" ) )
    {
      int result;
      TQDataStream stream2(  reply, IO_ReadOnly );
      stream2 >> result;
      kdDebug() << k_funcinfo << "networkstatus status = " << result << endl;
      // if it's not unknown (no networks announced by network control apps), and not offline, give up now
      if ( ( result != NetWorkStatusUnknown ) && ( result != NetWorkStatusOnline ) )
      {
        emit checkedMail( false, mInteractive, mTotalNewInFolder );
        return;
     }
    }
  }

  connect( curAccount, TQT_SIGNAL( finishedCheck( bool, CheckStatus ) ),
                this, TQT_SLOT( processNextCheck( bool ) ) );

  KPIM::BroadcastStatus::instance()->seStatusMsg(
      i18n("Checking account %1 for new mail").arg(curAccount->name()));

  kdDebug(5006) << "processing next mail check for " << curAccount->name() << endl;

  curAccount->setCheckingMail( true );
  mAcctChecking.append( curAccount );
  kmkernel->filterMgr()->ref();
  curAccount->processNewMail( mInteractive );
}

//-----------------------------------------------------------------------------
KMAccount* AccountManager::create( const TQString &aType, const TQString &aName, uint id )
{
  KMAccount* act = 0;
  if ( id == 0 )
    id = createId();

  if ( aType == "local" ) {
    act = new KMAcctLocal(this, aName.isEmpty() ? i18n("Local Account") : aName, id);
    act->setFolder( kmkernel->inboxFolder() );
  } else if ( aType == "maildir" ) {
    act = new KMAcctMaildir(this, aName.isEmpty() ? i18n("Local Account") : aName, id);
    act->setFolder( kmkernel->inboxFolder() );
  } else if ( aType == "pop" ) {
    act = new KMail::PopAccount(this, aName.isEmpty() ? i18n("POP Account") : aName, id);
    act->setFolder( kmkernel->inboxFolder() );
  } else if ( aType == "imap" ) {
    act = new KMAcctImap(this, aName.isEmpty() ? i18n("IMAP Account") : aName, id);
  } else if (aType == "cachedimap") {
    act = new KMAcctCachedImap(this, aName.isEmpty() ? i18n("IMAP Account") : aName, id);
  }
  if ( !act ) {
      kdWarning(5006) << "Attempt to instantiate a non-existing account type!" << endl;
      return 0;
  }
  connect( act, TQT_SIGNAL( newMailsProcessed( const TQMap<TQString, int> & ) ),
                this, TQT_SLOT( addToTotalNewMailCount( const TQMap<TQString, int> & ) ) );
  return act;
}


//-----------------------------------------------------------------------------
void AccountManager::add( KMAccount *account )
{
  if ( account ) {
    mAcctList.append( account );
    // init folder's account list
    KMAcctFolder *folder = static_cast<KMAcctFolder*>( account->folder() );
    if ( folder && !folder->hasAccounts() ) {
      folder->addAccount( account );
    }
    emit accountAdded( account );
    account->installTimer();
  }
}


//-----------------------------------------------------------------------------
KMAccount* AccountManager::findByName(const TQString &aName) const
{
  if ( aName.isEmpty() ) return 0;

  for ( AccountList::ConstIterator it( mAcctList.begin() ), end( mAcctList.end() ); it != end; ++it ) {
    if ( (*it)->name() == aName ) return (*it);
  }
  return 0;
}


//-----------------------------------------------------------------------------
KMAccount* AccountManager::find( const uint id ) const
{
  if (id == 0) return 0;
  for ( AccountList::ConstIterator it( mAcctList.begin() ), end( mAcctList.end() ); it != end; ++it ) {
    if ( (*it)->id() == id ) return (*it);
  }
  return 0;
}


//-----------------------------------------------------------------------------
KMAccount* AccountManager::first()
{
  if ( !mAcctList.empty() ) {
    mPtrListInterfaceProxyIterator = mAcctList.begin();
    return *mPtrListInterfaceProxyIterator;
  } else {
    return 0;
  }
}

//-----------------------------------------------------------------------------
KMAccount* AccountManager::next()
{
    ++mPtrListInterfaceProxyIterator;
    if ( mPtrListInterfaceProxyIterator == mAcctList.end() )
        return 0;
    else
        return *mPtrListInterfaceProxyIterator;
}

//-----------------------------------------------------------------------------
bool AccountManager::remove( KMAccount* acct )
{
  if( !acct )
    return false;
  mAcctList.remove( acct );
  emit accountRemoved( acct );
  return true;
}

//-----------------------------------------------------------------------------
void AccountManager::checkMail( bool _interactive )
{
  mNewMailArrived = false;

  if ( mAcctList.isEmpty() ) {
    KMessageBox::information( 0,i18n("You need to add an account in the network "
                    "section of the settings in order to receive mail.") );
    return;
  }
  mDisplaySummary = true;

  mTotalNewMailsArrived=0;
  mTotalNewInFolder.clear();

  for ( AccountList::Iterator it( mAcctList.begin() ), end( mAcctList.end() ); it != end; ++it ) {
    if ( !(*it)->checkExclude() )
      singleCheckMail( (*it), _interactive);
  }
}


//-----------------------------------------------------------------------------
void AccountManager::singleInvalidateIMAPFolders(KMAccount *account) {
  account->invalidateIMAPFolders();
}


void AccountManager::invalidateIMAPFolders()
{
  for ( AccountList::ConstIterator it( mAcctList.begin() ), end( mAcctList.end() ); it != end; ++it )
    singleInvalidateIMAPFolders( *it );
}


//-----------------------------------------------------------------------------
TQStringList  AccountManager::getAccounts() const
{
  TQStringList strList;
  for ( AccountList::ConstIterator it( mAcctList.begin() ), end( mAcctList.end() ); it != end; ++it ) {
    strList.append( (*it)->name() );
  }
  return strList;
}

//-----------------------------------------------------------------------------
void AccountManager::intCheckMail(int item, bool _interactive)
{
  mNewMailArrived = false;
  mTotalNewMailsArrived = 0;
  mTotalNewInFolder.clear();
  if ( KMAccount *acct = mAcctList[ item ] )
    singleCheckMail( acct, _interactive );
  mDisplaySummary = false;
}


//-----------------------------------------------------------------------------
void AccountManager::addToTotalNewMailCount( const TQMap<TQString, int> & newInFolder )
{
  for ( TQMap<TQString, int>::const_iterator it = newInFolder.begin();
        it != newInFolder.end(); ++it ) {
    mTotalNewMailsArrived += it.data();
    if ( mTotalNewInFolder.find( it.key() ) == mTotalNewInFolder.end() )
      mTotalNewInFolder[it.key()] = it.data();
    else
      mTotalNewInFolder[it.key()] += it.data();
  }
}

//-----------------------------------------------------------------------------
uint AccountManager::createId()
{
  TQValueList<uint> usedIds;
  for ( AccountList::ConstIterator it( mAcctList.begin() ), end( mAcctList.end() ); it != end; ++it ) {
    usedIds << (*it)->id();
  }

  usedIds << 0; // 0 is default for unknown
  int newId;
  do
  {
    newId = kapp->random();
  } while ( usedIds.find(newId) != usedIds.end() );

  return newId;
}

//-----------------------------------------------------------------------------
void AccountManager::cancelMailCheck()
{
  for ( AccountList::ConstIterator it( mAcctList.begin() ), end( mAcctList.end() ); it != end; ++it ) {
    (*it)->cancelMailCheck();
  }
}


//-----------------------------------------------------------------------------
void AccountManager::readPasswords()
{
  for ( AccountList::ConstIterator it( mAcctList.begin() ), end( mAcctList.end() ); it != end; ++it ) {
    NetworkAccount *acct = dynamic_cast<NetworkAccount*>( (*it) );
    if ( acct )
      acct->readPassword();
  }
}

#include "accountmanager.moc"