/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2002
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Rajiv Dayal <rdayal@netscape.com>
 *   David Bienvenu <bienvenu@nventure.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * the provisions above, a recipient may use your version of this file under
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 * ***** END LICENSE BLOCK ***** */


#include "nsCOMPtr.h"
#include "nsAbLDAPChangeLogQuery.h"
#include "nsAbLDAPReplicationService.h"
#include "nsAbLDAPChangeLogData.h"
#include "nsAutoLock.h"
#include "nsAbUtils.h"
#include "prprf.h"
#include "nsDirPrefs.h"
#include "nsAbBaseCID.h"
#include "nsPrintfCString.h"


// The tables below were originally in nsAbLDAPProperties.cpp, which has since
// gone away.
static const char * sChangeLogRootDSEAttribs[] =
{ 
  "changelog", 
  "firstChangeNumber", 
  "lastChangeNumber",
  "dataVersion"
};
static const char * sChangeLogEntryAttribs[] =
{ 
  "targetdn", 
  "changetype"
};


NS_IMPL_ISUPPORTS_INHERITED1(nsAbLDAPChangeLogQuery, nsAbLDAPReplicationQuery, nsIAbLDAPChangeLogQuery)

nsAbLDAPChangeLogQuery::nsAbLDAPChangeLogQuery()
{
}

nsAbLDAPChangeLogQuery::~nsAbLDAPChangeLogQuery()
{

}

// this is to be defined only till this is not hooked to SSL to get authDN and authPswd
#define USE_AUTHDLG

NS_IMETHODIMP nsAbLDAPChangeLogQuery::Init(const nsACString & aPrefName, nsIWebProgressListener *aProgressListener)
{
    if(aPrefName.IsEmpty()) 
        return NS_ERROR_UNEXPECTED;

    mDirPrefName = aPrefName;

    nsresult rv = InitLDAPData();
    if(NS_FAILED(rv)) 
        return rv;

    // create the ChangeLog Data Processor
    mDataProcessor =  do_CreateInstance(NS_ABLDAP_PROCESSCHANGELOGDATA_CONTRACTID, &rv);
    if(NS_FAILED(rv)) 
        return rv;

    // 'this' initialized
    mInitialized = PR_TRUE;

    return mDataProcessor->Init(this, aProgressListener);
}

NS_IMETHODIMP nsAbLDAPChangeLogQuery::DoReplicationQuery()
{
    if(!mInitialized) 
        return NS_ERROR_NOT_INITIALIZED;

#ifdef USE_AUTHDLG
    return ConnectToLDAPServer(mURL, EmptyCString());
#else
    mDataProcessor->PopulateAuthData();
    return ConnectToLDAPServer(mURL, mAuthDN);
#endif
}

NS_IMETHODIMP nsAbLDAPChangeLogQuery::QueryAuthDN(const nsACString & aValueUsedToFindDn)
{
    if(!mInitialized) 
        return NS_ERROR_NOT_INITIALIZED;

    nsresult rv = NS_OK; 

    CharPtrArrayGuard attributes;
    *attributes.GetSizeAddr() = 2;
    *attributes.GetArrayAddr() = NS_STATIC_CAST(char **, nsMemory::Alloc((*attributes.GetSizeAddr()) * sizeof(char *)));
    attributes.GetArray()[0] = ToNewCString(nsDependentCString(DIR_GetFirstAttributeString(mDirServer, cn)));
    attributes.GetArray()[1] = nsnull;
    
    nsCAutoString filter(DIR_GetFirstAttributeString(mDirServer, auth));
    filter += '=';
    filter += aValueUsedToFindDn;

    nsCAutoString dn;
    rv = mURL->GetDn(dn);
    if(NS_FAILED(rv)) 
        return rv;

    rv = CreateNewLDAPOperation();
    NS_ENSURE_SUCCESS(rv, rv);

    return mOperation->SearchExt(dn, nsILDAPURL::SCOPE_SUBTREE, filter, 
                               attributes.GetSize(), attributes.GetArray(),
                               0, 0);
}

NS_IMETHODIMP nsAbLDAPChangeLogQuery::QueryRootDSE()
{
    if(!mInitialized) 
        return NS_ERROR_NOT_INITIALIZED;

    nsresult rv = CreateNewLDAPOperation();
    NS_ENSURE_SUCCESS(rv, rv);
    return mOperation->SearchExt(EmptyCString(), nsILDAPURL::SCOPE_BASE, 
                                 NS_LITERAL_CSTRING("objectclass=*"), 
                                 sizeof(sChangeLogRootDSEAttribs),
                                 sChangeLogRootDSEAttribs, 0, 0);
}

NS_IMETHODIMP nsAbLDAPChangeLogQuery::QueryChangeLog(const nsACString & aChangeLogDN, PRInt32 aLastChangeNo)
{
    if(!mInitialized) 
        return NS_ERROR_NOT_INITIALIZED;
    if(aChangeLogDN.IsEmpty()) 
        return NS_ERROR_UNEXPECTED;

    // make sure that the filter here just have one condition 
    // and should not be enclosed in enclosing brackets.
    // also condition '>' doesnot work, it should be '>='/
    nsCAutoString filter (NS_LITERAL_CSTRING("changenumber>="));
    filter.AppendInt(mDirServer->replInfo->lastChangeNumber+1);

    nsresult rv = CreateNewLDAPOperation();
    NS_ENSURE_SUCCESS(rv, rv);

    return mOperation->SearchExt(aChangeLogDN, nsILDAPURL::SCOPE_ONELEVEL, filter, 
                                 sizeof(sChangeLogEntryAttribs),
                                 sChangeLogEntryAttribs, 0, 0);
}

NS_IMETHODIMP nsAbLDAPChangeLogQuery::QueryChangedEntries(const nsACString & aChangedEntryDN)
{
    if(!mInitialized) 
        return NS_ERROR_NOT_INITIALIZED;
    if(aChangedEntryDN.IsEmpty()) 
        return NS_ERROR_UNEXPECTED;

    nsCAutoString urlFilter;
    nsresult rv = mURL->GetFilter(urlFilter);
    if(NS_FAILED(rv)) 
        return rv;

    PRInt32 scope;
    rv = mURL->GetScope(&scope);
    if(NS_FAILED(rv)) 
        return rv;

    CharPtrArrayGuard attributes;
    rv = mURL->GetAttributes(attributes.GetSizeAddr(), attributes.GetArrayAddr());
    if(NS_FAILED(rv)) 
        return rv;

    rv = CreateNewLDAPOperation();
    NS_ENSURE_SUCCESS(rv, rv);
    return mOperation->SearchExt(aChangedEntryDN, scope, urlFilter, 
                               attributes.GetSize(), attributes.GetArray(),
                               0, 0);
}