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#ifdef XP_MAC
#include <stat.h>
#else
#include <sys/stat.h>
#endif

#include "msgCore.h"
#include "nsImapMailDatabase.h"
#include "nsDBFolderInfo.h"
#include "nsLocalFolderSummarySpec.h"
#include "nsIFileSpec.h"

const char *kPendingHdrsScope = "ns:msg:db:row:scope:pending:all";	// scope for all offine ops table
const char *kPendingHdrsTableKind = "ns:msg:db:table:kind:pending";
struct mdbOid gAllPendingHdrsTableOID;

nsImapMailDatabase::nsImapMailDatabase()
{
  m_mdbAllPendingHdrsTable = nsnull;
}

nsImapMailDatabase::~nsImapMailDatabase()
{
}

NS_IMETHODIMP	nsImapMailDatabase::GetSummaryValid(PRBool *aResult)
{
  NS_ENSURE_ARG_POINTER(aResult);
  if (m_dbFolderInfo)
  {
    PRUint32 version;
    m_dbFolderInfo->GetVersion(&version);
    *aResult = (GetCurVersion() == version);
  }
  else
      *aResult = PR_FALSE;

  return NS_OK;
}

NS_IMETHODIMP	nsImapMailDatabase::SetSummaryValid(PRBool valid)
{
  if (m_dbFolderInfo)
  {
    m_dbFolderInfo->SetVersion(valid ? GetCurVersion() : 0);
    Commit(nsMsgDBCommitType::kLargeCommit);
  }
  return NS_OK;
}

// IMAP does not set local file flags, override does nothing
void	nsImapMailDatabase::UpdateFolderFlag(nsIMsgDBHdr * /* msgHdr */, PRBool /* bSet */, 
                                              MsgFlags /* flag */, nsIOFileStream ** /* ppFileStream */)
{
}

PRBool nsImapMailDatabase::SetHdrFlag(nsIMsgDBHdr *msgHdr, PRBool bSet, MsgFlags flag)
{
  return nsMsgDatabase::SetHdrFlag(msgHdr, bSet, flag);
}

// override so nsMailDatabase methods that deal with m_folderStream are *not* called
NS_IMETHODIMP nsImapMailDatabase::StartBatch()
{
  return NS_OK;
}

NS_IMETHODIMP nsImapMailDatabase::EndBatch()
{
  return NS_OK;
}

NS_IMETHODIMP nsImapMailDatabase::DeleteMessages(nsMsgKeyArray* nsMsgKeys, nsIDBChangeListener *instigator)
{
  return nsMsgDatabase::DeleteMessages(nsMsgKeys, instigator);
}

nsresult nsImapMailDatabase::AdjustExpungedBytesOnDelete(nsIMsgDBHdr *msgHdr)
{
  PRUint32 msgFlags;
  msgHdr->GetFlags(&msgFlags);
  if (msgFlags & MSG_FLAG_OFFLINE && m_dbFolderInfo)
  {
    PRUint32 size = 0;
    (void)msgHdr->GetOfflineMessageSize(&size);
    return m_dbFolderInfo->ChangeExpungedBytes (size);
  }
  return NS_OK;
}

NS_IMETHODIMP nsImapMailDatabase::ForceClosed()
{
  m_mdbAllPendingHdrsTable = nsnull;
  return nsMailDatabase::ForceClosed();
}

NS_IMETHODIMP nsImapMailDatabase::GetFolderStream(nsIOFileStream **aFileStream)
{
  return NS_ERROR_NOT_IMPLEMENTED;
}

NS_IMETHODIMP nsImapMailDatabase::SetFolderStream(nsIOFileStream *aFileStream)
{
  NS_ASSERTION(0, "Trying to set folderStream, not implemented");
  return NS_ERROR_NOT_IMPLEMENTED;
}

nsresult nsImapMailDatabase::GetAllPendingHdrsTable()
{
  nsresult rv = NS_OK;
  if (!m_mdbAllPendingHdrsTable)
    rv = GetTableCreateIfMissing(kPendingHdrsScope, kPendingHdrsTableKind, getter_AddRefs(m_mdbAllPendingHdrsTable),
                                                m_pendingHdrsRowScopeToken, m_pendingHdrsTableKindToken) ;
  return rv;
}

static const char *kFlagsName = "flags";

NS_IMETHODIMP nsImapMailDatabase::AddNewHdrToDB(nsIMsgDBHdr *newHdr, PRBool notify)
{
  nsresult rv = nsMsgDatabase::AddNewHdrToDB(newHdr, notify);
  if (NS_SUCCEEDED(rv))
  {
    rv = GetAllPendingHdrsTable();
    NS_ENSURE_SUCCESS(rv, rv);
    mdb_count numPendingHdrs = 0;
    m_mdbAllPendingHdrsTable->GetCount(GetEnv(), &numPendingHdrs);
    if (numPendingHdrs > 0)
    {
      mdbYarn messageIdYarn;
      nsCOMPtr <nsIMdbRow> pendingRow;
      mdbOid  outRowId;
  
      nsXPIDLCString messageId;
      newHdr->GetMessageId(getter_Copies(messageId));
      messageIdYarn.mYarn_Buf = (void*)messageId.get();
      messageIdYarn.mYarn_Fill = messageId.Length();
      messageIdYarn.mYarn_Form = 0;
      messageIdYarn.mYarn_Size = messageIdYarn.mYarn_Fill;
  
      m_mdbStore->FindRow(GetEnv(), m_pendingHdrsRowScopeToken, 
                m_messageIdColumnToken, &messageIdYarn, &outRowId, getter_AddRefs(pendingRow));
      if (pendingRow)
      {
        mdb_count numCells;
        mdbYarn cellYarn;
        mdb_column cellColumn;

        pendingRow->GetCount(GetEnv(), &numCells);
        // iterate over the cells in the pending hdr setting properties on the newHdr.
        // we skip cell 0, which is the messageId;
        for (mdb_count cellIndex = 1; cellIndex < numCells; cellIndex++)
        {
          mdb_err err = pendingRow->SeekCellYarn(GetEnv(), cellIndex, &cellColumn, nsnull);
          if (err == 0)
          {
            err = pendingRow->AliasCellYarn(GetEnv(), cellColumn, &cellYarn);
            if (err == 0)
            {
              nsMsgHdr* msgHdr = NS_STATIC_CAST(nsMsgHdr*, newHdr);      // closed system, cast ok
              nsIMdbRow *row = msgHdr->GetMDBRow();
              if (row)
                row->AddColumn(GetEnv(), cellColumn, &cellYarn);
            }
          }
        }
        m_mdbAllPendingHdrsTable->CutRow(GetEnv(), pendingRow);
        pendingRow->CutAllColumns(GetEnv());
      }
    }
  }
  return rv;
}

NS_IMETHODIMP nsImapMailDatabase::SetAttributesOnPendingHdr(nsIMsgDBHdr *pendingHdr, const char *property, 
                                  const char *propertyVal, PRInt32 flags)
{
  NS_ENSURE_ARG_POINTER(pendingHdr);
  nsresult rv = GetAllPendingHdrsTable();
  NS_ENSURE_SUCCESS(rv, rv);

  mdbYarn messageIdYarn;
  nsCOMPtr <nsIMdbRow> pendingRow;
  nsIMdbRow *newHdrRow;
  mdbOid  outRowId;
  mdb_err err;
  nsXPIDLCString messageId;
  pendingHdr->GetMessageId(getter_Copies(messageId));
  messageIdYarn.mYarn_Buf = (void*)messageId.get();
  messageIdYarn.mYarn_Fill = messageId.Length();
  messageIdYarn.mYarn_Form = 0;
  messageIdYarn.mYarn_Size = messageIdYarn.mYarn_Fill;

  err = m_mdbStore->FindRow(GetEnv(), m_pendingHdrsRowScopeToken, 
            m_messageIdColumnToken, &messageIdYarn, &outRowId, getter_AddRefs(pendingRow));

  if (!pendingRow)
  {
    err  = m_mdbStore->NewRow(GetEnv(), m_pendingHdrsRowScopeToken, &newHdrRow);
    pendingRow = do_QueryInterface(newHdrRow);
  }
  NS_ENSURE_SUCCESS(err, err);
  if (pendingRow)
  {
    // now we need to add cells to the row to remember the messageid, property and property value, and flags. 
    // Then, when hdrs are added to the db, we'll check if they have a matching message-id, and if so,
    // set the property and flags
    nsXPIDLCString messageId;
    pendingHdr->GetMessageId(getter_Copies(messageId));
    // we're just going to ignore messages without a message-id. They should be rare. If SPAM messages often
    // didn't have message-id's, they'd be filtered on the server, most likely, and spammers would then
    // start putting in message-id's.
    if (!messageId.IsEmpty())
    {
       extern const char *kMessageIdColumnName;
       m_mdbAllPendingHdrsTable->AddRow(GetEnv(), pendingRow);
       // make sure this is the first cell so that when we ignore the first
       // cell in nsImapMailDatabase::AddNewHdrToDB, we're ignoring the right one
      (void) SetProperty(pendingRow, kMessageIdColumnName, messageId.get());
      (void) SetProperty(pendingRow, property, propertyVal);
      (void) SetUint32Property(pendingRow, kFlagsName, (PRUint32) flags);
    }
    else 
      return NS_ERROR_FAILURE; 
  }
  return rv;
}

