//
// C++ Implementation: filterlog
//
// Description:
//
//
// Author: Ulrich Weigelt <ulrich.weigelt@gmx.de>, (C) 2007
//
// Copyright: See COPYING file that comes with this distribution
//
//
#include "filterlog.h"

FilterLog::FilterLog()
{
  //get the application config object
  config = TDEApplication::kApplication()->config();

  //load the setup
  loadSetup();

  //load stored entries
  load();
}


FilterLog::~FilterLog()
{
}

void FilterLog::addDeletedMail(const TQDateTime & dateTime, const TQString & sender, const TQString & account, const TQString & subject)
{
  if( logDeletedMails )
    addEntry( FActDelete, dateTime, sender, account, subject, "" );
}

void FilterLog::addMovedMail(const TQDateTime & dateTime, const TQString & sender, const TQString & account, const TQString & subject, const TQString & mailbox)
{
  if( logMovedMails )
    addEntry( FActMove, dateTime, sender, account, subject, mailbox );
}

void FilterLog::addEntry(FilterAction_Type action, const TQDateTime & dateTime, const TQString & sender, const TQString & account, const TQString & subject, const TQString & mailbox)
{
  //create entry
  FilterLogEntry entry = FilterLogEntry( action, dateTime, sender, account, subject, mailbox );

  //add entry to the appropriate list
  switch( action )
  {
    case FActDelete   : listDeletedMails.append( entry ); break;
    case FActMove     : listMovedMails.append( entry ); break;
    default           : kdError( "FilterLog::addEntry: Could not relate the following mail:" );
                        entry.print();
                        break;
  }
}

void FilterLog::print()
{
  kdDebug() << "Log state:" << endl;
  kdDebug() << "----------" << endl;

  //print all entries about deleted mails
  kdDebug() << "Deleted mails:" << endl;
  LogEntryList::iterator it;
  for ( it = listDeletedMails.begin(); it != listDeletedMails.end(); ++it )
    (*it).print();

  kdDebug() << endl;

  //print all entries about moved mails
  kdDebug() << "Moved mails:" << endl;
  for ( it = listMovedMails.begin(); it != listMovedMails.end(); ++it )
    (*it).print();
}

void FilterLog::clearDeletedMailsLog()
{
  listDeletedMails.clear();
}

void FilterLog::clearMovedMailsLog()
{
  listMovedMails.clear();
}

void FilterLog::save()
{
  //maybe we have to remove old entries, calculate minimum date
  TQDateTime minTime = TQDateTime::currentDateTime();
  minTime = minTime.addDays( daysStoreDeletedMails * -1 );

  //we need a XML document
  TQDomDocument doc( LOG_DOCTYPE );

  //and a root element
  TQDomElement rootElem = doc.createElement( LOG_ROOT_ELEMENT );
  doc.appendChild( rootElem );

  //store the entries of the deleted mails list into the document
  //if the user want it
  if( deletedMailsStorageMode != exit )
  {
    LogEntryList::iterator it;
    for ( it = listDeletedMails.begin(); it != listDeletedMails.end(); ++it )
    {
      if( (*it).getDate() >= minTime )
        (*it).save( doc, rootElem );
    }
  }


  //get the name of the file to save
  TQString filename = locateLocal( "appdata", LOG_FILE );

  //and save
  TQFile file( filename );

  if ( file.open( IO_WriteOnly ) ) //open file
  {
    TQTextStream stream( &file );
    doc.save( stream, 2 );
    file.close();
  }
  else
  {
    KMessageBox::error( NULL, i18n( "Could not save the filter log." ) );
  }
}

void FilterLog::load()
{
  //maybe we have to remove old entries, calculate minimum date
  TQDateTime minTime = TQDateTime::currentDateTime();
  minTime = minTime.addDays( daysStoreDeletedMails * -1 );

  //we need a XML document
  TQDomDocument doc( LOG_DOCTYPE );

  //get the name of the file
  TQString filename = locateLocal( "appdata", LOG_FILE );

  //load the log from file into the DOM document
  TQFile file( filename );

  if ( !file.open( IO_ReadOnly ) )
    return;         //return, if the file can't opened

  if ( !doc.setContent( &file ) ) {
    file.close();   //return, if the content of the file is invalid
    return;
  }

  //the content was loaded, close the file
  file.close();

  //iterate over all DOM elements and generate the log entries
  TQDomElement docElem = doc.documentElement();  //get root element

  //return, if the root element is not LOG_ROOT_ELEMENT
  if( docElem.tagName() != LOG_ROOT_ELEMENT ) return;

  TQDomNode n = docElem.firstChild();  //get first child (this is the first log entry)
  while( !n.isNull() )
  {
    TQDomElement e = n.toElement();   //try to convert the node to an element.
    if( !e.isNull() )
    {
      if( e.tagName() == LOG_ENTRY_ELEMENT )
      {
        //add the read entry to the list of deleted mails
        TQDateTime mailTime = TQDateTime::fromString( e.attribute( LOG_ENTRY_ATTRIBUTE_DATETIME ), TQt::ISODate );
        if( mailTime >= minTime )
          addDeletedMail( mailTime,
                          e.attribute( LOG_ENTRY_ATTRIBUTE_SENDER ),
                          e.attribute( LOG_ENTRY_ATTRIBUTE_ACCOUNT ),
                          e.attribute( LOG_ENTRY_ATTRIBUTE_SUBJECT ) );
      }
    }
    n = n.nextSibling();            //get next child
  }
}

LogEntryList FilterLog::getDeletedMails( )
{
  return listDeletedMails;
}

LogEntryList FilterLog::getMovedMails( )
{
  return listMovedMails;
}

void FilterLog::loadSetup( )
{
  config->setGroup( CONFIG_GROUP_LOG );

  logDeletedMails = config->readBoolEntry( CONFIG_ENTRY_LOG_LOG_DELETED_MAILS, DEFAULT_LOG_LOG_DELETED_MAILS );
  logMovedMails = config->readBoolEntry( CONFIG_ENTRY_LOG_LOG_MOVED_MAILS, DEFAULT_LOG_LOG_MOVED_MAILS );

  if( logDeletedMails )
  {
    TQString storageMode = config->readEntry(CONFIG_ENTRY_LOG_REMOVE_DELETED_MAILS, DEFAULT_LOG_REMOVE_DELETED_MAILS );
    if( storageMode == CONFIG_VALUE_LOG_REMOVE_MAILS_AT_EXIT )
      deletedMailsStorageMode = exit;
    else if( storageMode == CONFIG_VALUE_LOG_REMOVE_MAILS_AFTER_DAYS )
      deletedMailsStorageMode = days;
    else
      deletedMailsStorageMode = days;

    if( deletedMailsStorageMode == days )
      daysStoreDeletedMails = config->readNumEntry( CONFIG_ENTRY_LOG_HOLDDAYS_DELETED_MAILS, DEFAULT_LOG_HOLDDAYS_DELETED_MAILS );
    else
      daysStoreDeletedMails = 7;
  }
  else
  {
    deletedMailsStorageMode = days;
    daysStoreDeletedMails = 7;
  }
}

int FilterLog::numberDeletedMails( )
{
  return listDeletedMails.count();
}

int FilterLog::numberMovedMails( )
{
  return listMovedMails.count();
}