/* -*- 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
 * Rajiv Dayal <rdayal@netscape.com>
 * Portions created by the Initial Developer are Copyright (C) 2002
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Dan Mosedale <dmose@netscape.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either 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
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */


#include "nsCOMPtr.h"
#include "nsAbLDAPReplicationQuery.h"
#include "nsAbLDAPReplicationService.h"
#include "nsAbLDAPReplicationData.h"
#include "nsILDAPURL.h"
#include "nsAbBaseCID.h"
#include "nsProxiedService.h"
#include "nsLDAP.h"
#include "nsAbUtils.h"
#include "nsDirPrefs.h"


NS_IMPL_ISUPPORTS1(nsAbLDAPReplicationQuery, nsIAbLDAPReplicationQuery)

nsAbLDAPReplicationQuery::nsAbLDAPReplicationQuery()
    :  mInitialized(PR_FALSE),
       mDirServer(nsnull)
{
}

nsAbLDAPReplicationQuery::~nsAbLDAPReplicationQuery()
{
    DIR_DeleteServer(mDirServer);
}

nsresult nsAbLDAPReplicationQuery::InitLDAPData()
{
    mDirServer = (DIR_Server *) PR_Calloc(1, sizeof(DIR_Server));
    if (!mDirServer) return NS_ERROR_NULL_POINTER;

    DIR_InitServerWithType(mDirServer, LDAPDirectory);
    // since DeleteServer frees the prefName make a copy of prefName string
    mDirServer->prefName = nsCRT::strdup(mDirPrefName.get());
    DIR_GetPrefsForOneServer(mDirServer, PR_FALSE, PR_FALSE);

    // this is done here to take care of the problem related to bug # 99124.
    // earlier versions of Mozilla could have the fileName associated with the directory
    // to be abook.mab which is the profile's personal addressbook. If the pref points to
    // it, calls nsDirPrefs to generate a new server filename.
    if (!nsCRT::strcasecmp(mDirServer->fileName,kPersonalAddressbook) 
        || !mDirServer->fileName || !(*mDirServer->fileName)) {
        // initialize mDirServer->filename is null or else DIR_SetServerFileName doesnot work
        // and no point in passing the 2nd param (leafName) to it as it doesnot use that.
        PR_FREEIF(mDirServer->fileName);
        mDirServer->fileName=nsnull;
        DIR_SetServerFileName (mDirServer, nsnull);
    }
    // use the dir server filename for replication
    PR_FREEIF(mDirServer->replInfo->fileName);
    // since DeleteServer frees the replInfo->fileName make a copy of string
    // if we donot do this the DeleteServer functions crashes.
    mDirServer->replInfo->fileName = nsCRT::strdup(mDirServer->fileName);

    nsresult rv = NS_OK;

    mURL = do_CreateInstance(NS_LDAPURL_CONTRACTID, &rv);
    if (NS_FAILED(rv)) 
        return rv;

    rv = mURL->SetSpec(nsDependentCString(mDirServer->uri));
    if (NS_FAILED(rv)) 
        return rv;

    mConnection = do_CreateInstance(NS_LDAPCONNECTION_CONTRACTID, &rv);
    if (NS_FAILED(rv)) 
        return rv;

    mOperation = do_CreateInstance(NS_LDAPOPERATION_CONTRACTID, &rv);

    return rv;
}

nsresult nsAbLDAPReplicationQuery::CreateNewLDAPOperation()
{
  nsresult rv;
  nsCOMPtr <nsILDAPMessageListener> oldListener;
  mOperation->GetMessageListener(getter_AddRefs(oldListener));
  // release old and create a new instance
  mOperation = do_CreateInstance(NS_LDAPOPERATION_CONTRACTID, &rv);
  NS_ENSURE_SUCCESS(rv, rv);
  return mOperation->Init(mConnection, oldListener, nsnull);
}


NS_IMETHODIMP nsAbLDAPReplicationQuery::ConnectToLDAPServer(nsILDAPURL *aURL, const nsACString & aAuthDN)
{
    NS_ENSURE_ARG_POINTER(aURL);
    if (!mInitialized) 
        return NS_ERROR_NOT_INITIALIZED;

    nsCAutoString host;
    nsresult rv = aURL->GetHost(host);
    if (NS_FAILED(rv)) 
        return rv;
    if (host.IsEmpty())
        return NS_ERROR_UNEXPECTED;

    PRInt32 port;
    rv = aURL->GetPort(&port);
    if (NS_FAILED(rv)) 
        return rv;
    if (!port)
        return NS_ERROR_UNEXPECTED;

    PRUint32 options;
    rv = aURL->GetOptions(&options);
    if (NS_FAILED(rv))
      return NS_ERROR_UNEXPECTED;

    // Initiate LDAP message listener to the current thread
    nsCOMPtr<nsILDAPMessageListener> listener;
    rv = NS_GetProxyForObject(NS_CURRENT_EVENTQ,
                  NS_GET_IID(nsILDAPMessageListener), 
                  NS_STATIC_CAST(nsILDAPMessageListener*, mDataProcessor),
                  PROXY_SYNC | PROXY_ALWAYS, 
                  getter_AddRefs(listener));
    if (!listener) 
        return NS_ERROR_FAILURE;

    // this could be a rebind call
    PRInt32 replicationState = nsIAbLDAPProcessReplicationData::kIdle;
    rv = mDataProcessor->GetReplicationState(&replicationState);
    if(NS_FAILED(rv)) 
        return rv;
    if((replicationState != nsIAbLDAPProcessReplicationData::kIdle))
    {
        // release old and create a new instance
        mConnection = do_CreateInstance(NS_LDAPCONNECTION_CONTRACTID, &rv);
        if(NS_FAILED(rv)) 
            return rv;

        // release old and create a new instance
        mOperation = do_CreateInstance(NS_LDAPOPERATION_CONTRACTID, &rv);
        if(NS_FAILED(rv)) 
            return rv;
    }

    PRUint32 protocolVersion;
    if (DIR_TestFlag(mDirServer, DIR_LDAP_VERSION3)) {
        protocolVersion = nsILDAPConnection::VERSION3;
    } else {
        protocolVersion = nsILDAPConnection::VERSION2;
    }

    // initialize the LDAP connection
    return mConnection->Init(host.get(), port, 
                             (options & nsILDAPURL::OPT_SECURE) ? PR_TRUE : PR_FALSE,
                             aAuthDN, listener, nsnull, protocolVersion);
}

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

    mDirPrefName = aPrefName;

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

    mDataProcessor =  do_CreateInstance(NS_ABLDAP_PROCESSREPLICATIONDATA_CONTRACTID, &rv);
    if (NS_FAILED(rv)) 
        return rv;

    // 'this' initialized
    mInitialized = PR_TRUE;

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

NS_IMETHODIMP nsAbLDAPReplicationQuery::DoReplicationQuery()
{
    return ConnectToLDAPServer(mURL, EmptyCString());
}

NS_IMETHODIMP nsAbLDAPReplicationQuery::QueryAllEntries()
{
    if (!mInitialized) 
        return NS_ERROR_NOT_INITIALIZED;

    // get the search filter associated with the directory server url; 
    //
    nsCAutoString urlFilter;
    nsresult rv = mURL->GetFilter(urlFilter);
    if (NS_FAILED(rv)) 
        return rv;

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

    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(dn, scope, urlFilter, 
                               attributes.GetSize(), attributes.GetArray(),
                               0, 0);
}

NS_IMETHODIMP nsAbLDAPReplicationQuery::CancelQuery()
{
    if (!mInitialized) 
        return NS_ERROR_NOT_INITIALIZED;

    return mDataProcessor->Abort();
}

NS_IMETHODIMP nsAbLDAPReplicationQuery::Done(PRBool aSuccess)
{
   if (!mInitialized) 
       return NS_ERROR_NOT_INITIALIZED;
   
   nsresult rv = NS_OK;
   nsCOMPtr<nsIAbLDAPReplicationService> replicationService = 
                            do_GetService(NS_ABLDAP_REPLICATIONSERVICE_CONTRACTID, &rv);
   if (NS_SUCCEEDED(rv))
      replicationService->Done(aSuccess);

   if (aSuccess)
       DIR_SavePrefsForOneServer(mDirServer);

   return rv;
}


NS_IMETHODIMP nsAbLDAPReplicationQuery::GetOperation(nsILDAPOperation * *aOperation)
{
   NS_ENSURE_ARG_POINTER(aOperation);
   if (!mInitialized) 
       return NS_ERROR_NOT_INITIALIZED;
   
   NS_IF_ADDREF(*aOperation = mOperation);

   return NS_OK;
}

NS_IMETHODIMP nsAbLDAPReplicationQuery::GetConnection(nsILDAPConnection * *aConnection)
{
   NS_ENSURE_ARG_POINTER(aConnection);
   if (!mInitialized) 
       return NS_ERROR_NOT_INITIALIZED;

   NS_IF_ADDREF(*aConnection = mConnection); 

   return NS_OK;
}

NS_IMETHODIMP nsAbLDAPReplicationQuery::GetReplicationURL(nsILDAPURL * *aReplicationURL)
{
   NS_ENSURE_ARG_POINTER(aReplicationURL);
   if (!mInitialized) 
       return NS_ERROR_NOT_INITIALIZED;

   NS_IF_ADDREF(*aReplicationURL = mURL); 

   return NS_OK;
}

NS_IMETHODIMP nsAbLDAPReplicationQuery::GetReplicationServerInfo(DIR_Server * *aReplicationServerInfo)
{
   NS_ENSURE_ARG_POINTER(aReplicationServerInfo);
   if (!mInitialized) 
       return NS_ERROR_NOT_INITIALIZED;

   *aReplicationServerInfo = mDirServer;

   return NS_OK;
}