/***************************************************************************
                          mailheader.cc  -  description
                             -------------------
    begin                : Tue Oct 24 2000
    copyright            : (C) 2000 by Sven Carstens
    email                : s.carstens@gmx.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#include "mailheader.h"
#include <QList>

mailHeader::mailHeader ()
{
  setType( "text/plain" );
  gmt_offset = 0;
}

mailHeader::~mailHeader ()
{
}

void
mailHeader::addHdrLine (mimeHdrLine * inLine)
{
  mimeHdrLine *addLine = new mimeHdrLine( inLine );

  const QByteArray label( addLine->getLabel() );
  const QByteArray value( addLine->getValue() );

  if ( !qstricmp( label, "Return-Path" ) ) {
    returnpathAdr.parseAddress( value.data() );
    goto out;
  }
  if ( !qstricmp( label, "Sender" ) ) {
    senderAdr.parseAddress( value.data() );
    goto out;
  }
  if ( !qstricmp( label, "From" ) ) {
    fromAdr.parseAddress( value.data() );
    goto out;
  }
  if ( !qstricmp( label, "Reply-To" ) ) {
    replytoAdr.parseAddress( value.data() );
    goto out;
  }
  if ( !qstricmp( label, "To" ) ) {
    mailHeader::parseAddressList( value, toAdr );
    goto out;
  }
  if ( !qstricmp( label, "CC" ) ) {
    mailHeader::parseAddressList( value, ccAdr );
    goto out;
  }
  if ( !qstricmp( label, "BCC" ) ) {
    mailHeader::parseAddressList( value, bccAdr );
    goto out;
  }
  if ( !qstricmp( label, "Subject" ) ) {
    _subject = value.simplified();
    goto out;
  }
  if ( !qstricmp( label.data(), "Date" ) ) {
    mDate = value;
    goto out;
  }
  if ( !qstricmp( label.data(), "Message-ID" ) ) {
      int start = value.lastIndexOf( '<' );
      int end = value.lastIndexOf( '>' );
      if ( start < end ) {
        messageID = value.mid( start, end - start + 1 );
      } else {
        qWarning( "bad Message-ID" );
          /* messageID = value; */
      }
      goto out;
  }
  if ( !qstricmp( label.data(), "In-Reply-To" ) ) {
      int start = value.lastIndexOf( '<' );
      int end = value.lastIndexOf( '>' );
      if ( start < end ) {
        inReplyTo = value.mid( start, end - start + 1 );
      }
      goto out;
  }

  // everything else is handled by mimeHeader
  mimeHeader::addHdrLine( inLine );
  delete addLine;
  return;

 out:
//  cout << label.data() << ": '" << value.data() << "'" << endl;

  //need only to add this line if not handled by mimeHeader
  originalHdrLines.append( addLine );
}

void
mailHeader::outputHeader (mimeIO & useIO)
{
  static const QByteArray __returnPath( "Return-Path: " );
  static const QByteArray __from      ( "From: " );
  static const QByteArray __sender    ( "Sender: " );
  static const QByteArray __replyTo   ( "Reply-To: " );
  static const QByteArray __to        ( "To: " );
  static const QByteArray __cc        ( "CC: " );
  static const QByteArray __bcc       ( "BCC: " );
  static const QByteArray __subject   ( "Subject: " );
  static const QByteArray __messageId ( "Message-ID: " );
  static const QByteArray __inReplyTo ( "In-Reply-To: " );
  static const QByteArray __references( "References: " );
  static const QByteArray __date      ( "Date: " );

  if ( !returnpathAdr.isEmpty() ) {
    useIO.outputMimeLine( __returnPath + returnpathAdr.getStr() );
  }
  if ( !fromAdr.isEmpty() ) {
    useIO.outputMimeLine( __from + fromAdr.getStr() );
  }
  if ( !senderAdr.isEmpty() ) {
    useIO.outputMimeLine( __sender + senderAdr.getStr() );
  }
  if ( !replytoAdr.isEmpty() ) {
    useIO.outputMimeLine( __replyTo + replytoAdr.getStr() );
  }

  if ( toAdr.count() ) {
    useIO.outputMimeLine( mimeHdrLine::truncateLine( __to +
                                    mailHeader::getAddressStr( toAdr ) ) );
  }
  if ( ccAdr.count() ) {
    useIO.outputMimeLine( mimeHdrLine::truncateLine( __cc +
                                    mailHeader::getAddressStr( ccAdr ) ) );
  }
  if ( bccAdr.count() ) {
    useIO.outputMimeLine( mimeHdrLine::truncateLine( __bcc +
                                    mailHeader::getAddressStr( bccAdr ) ) );
  }
  if ( !_subject.isEmpty() ) {
    useIO.outputMimeLine( mimeHdrLine::truncateLine( __subject + _subject ) );
  }
  if ( !messageID.isEmpty() ) {
    useIO.outputMimeLine( mimeHdrLine::truncateLine( __messageId + messageID ) );
  }
  if ( !inReplyTo.isEmpty() ) {
    useIO.outputMimeLine( mimeHdrLine::truncateLine( __inReplyTo + inReplyTo ) );
  }
  if ( !references.isEmpty() ) {
    useIO.outputMimeLine( mimeHdrLine::truncateLine( __references + references ) );
  }

  if ( !mDate.isEmpty() ) {
    useIO.outputMimeLine( __date + mDate );
  }
  mimeHeader::outputHeader( useIO );
}

int
mailHeader::parseAddressList (const char *inCStr,
                              QList < mailAddress *> &aList)
{
  int advance = 0;
  int skip = 1;
  char *aCStr = (char *) inCStr;

  if ( !aCStr ) {
    return 0;
  }
  while ( skip > 0 ) {
    mailAddress *aAddress = new mailAddress;
    skip = aAddress->parseAddress( aCStr );
    if ( skip ) {
      aCStr += skip;
      if ( skip < 0 ) {
        advance -= skip;
      } else {
        advance += skip;
      }
      aList.append( aAddress );
    } else {
      delete aAddress;
      break;
    }
  }
  return advance;
}

QByteArray
mailHeader::getAddressStr (QList < mailAddress *> &aList)
{
  QByteArray retVal;

  QListIterator < mailAddress *> it = QListIterator < mailAddress *>( aList );
  mailAddress *addr;
  while ( it.hasNext() ) {
    addr = it.next();
    retVal += addr->getStr();
    if ( it.hasNext() ) {
      retVal += ", ";
    }
  }
  return retVal;
}