/* -*- 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
 * Paul Sandoz <paul.sandoz@sun.com> Sun Microsystems, Inc.
 * Portions created by the Initial Developer are Copyright (C) 2001
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Seth Spitzer <sspitzer@netscape.com>
 *   Dan Mosedale <dmose@netscape.com>
 *   Paul Sandoz <paul.sandoz@sun.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
 * 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 "nsAbLDAPDirectory.h"

#include "nsAbQueryStringToExpression.h"

#include "nsAbBaseCID.h"
#include "nsIAddrBookSession.h"
#include "nsIRDFService.h"

#include "nsString.h"
#include "nsXPIDLString.h"
#include "nsAutoLock.h"
#include "nsNetCID.h"
#include "nsIIOService.h"
#include "nsXPCOM.h"
#include "nsISupportsPrimitives.h"
#include "nsIPrefService.h"
#include "nsIPrefBranch.h"
#include "nsCOMArray.h"
#include "nsArrayEnumerator.h"
#include "nsLDAP.h"
#include "nsIAbLDAPAttributeMap.h"

nsAbLDAPDirectory::nsAbLDAPDirectory() :
    nsAbDirectoryRDFResource(),
    nsAbLDAPDirectoryQuery (),
    mInitialized(PR_FALSE),
    mInitializedConnection(PR_FALSE),
    mPerformingQuery(PR_FALSE),
    mContext(0),
    mLock(0)
{
}

nsAbLDAPDirectory::~nsAbLDAPDirectory()
{
    if (mLock)
        PR_DestroyLock (mLock);
}

NS_IMPL_ISUPPORTS_INHERITED4(nsAbLDAPDirectory, nsAbDirectoryRDFResource, nsIAbDirectory, nsIAbDirectoryQuery, nsIAbDirectorySearch, nsIAbLDAPDirectory)

NS_IMETHODIMP nsAbLDAPDirectory::Init(const char* aURI)
{
  mInitialized = PR_FALSE;
  return nsAbDirectoryRDFResource::Init(aURI);
}

nsresult nsAbLDAPDirectory::Initiate ()
{
    if (!mIsQueryURI)
        return NS_ERROR_FAILURE;

    if (mInitialized)
        return NS_OK;

    nsresult rv;

    mLock = PR_NewLock ();
    if(!mLock)
    {
        return NS_ERROR_OUT_OF_MEMORY;
    }

    rv = nsAbQueryStringToExpression::Convert (mQueryString.get (),
        getter_AddRefs(mExpression));
    NS_ENSURE_SUCCESS(rv, rv);

    rv = InitiateConnection ();

    mInitialized = PR_TRUE;
    return rv;
}

nsresult nsAbLDAPDirectory::InitiateConnection ()
{
    if (mInitializedConnection)
        return NS_OK;

    nsresult rv;

    mURL = do_CreateInstance(NS_LDAPURL_CONTRACTID, &rv);
    NS_ENSURE_SUCCESS(rv, rv);

    nsCOMPtr<nsIPrefBranch> prefs(do_GetService(NS_PREFSERVICE_CONTRACTID, &rv));
    NS_ENSURE_SUCCESS(rv, rv);

    // use mURINoQuery to get a prefName
    nsCAutoString prefName;
    prefName = nsDependentCString(mURINoQuery.get() + kLDAPDirectoryRootLen) + NS_LITERAL_CSTRING(".uri");

    // turn moz-abldapdirectory://ldap_2.servers.nscpphonebook into -> "ldap_2.servers.nscpphonebook.uri"
    nsXPIDLCString URI;
    rv = prefs->GetCharPref(prefName.get(), getter_Copies(URI));
    if (NS_FAILED(rv))
    {
        /*
         * A recent change in Mozilla now means that the LDAP Address Book
         * RDF Resource URI is based on the unique preference name value i.e.  
         * [moz-abldapdirectory://prefName]
         * Prior to this valid change it was based on the actual uri i.e. 
         * [moz-abldapdirectory://host:port/basedn]
         * Basing the resource on the prefName allows these attributes to 
         * change. 
         *
         * But the uri value was also the means by which third-party
         * products could integrate with Mozilla's LDAP Address Books
         * without necessarily having an entry in the preferences file
         * or more importantly needing to be able to change the
         * preferences entries. Thus to set the URI Spec now, it is
         * only necessary to read the uri pref entry, while in the
         * case where it is not a preference, we need to replace the
         * "moz-abldapdirectory".
         */
        nsCAutoString tempLDAPURL(mURINoQuery);
        tempLDAPURL.ReplaceSubstring("moz-abldapdirectory:", "ldap:");
        rv = mURL->SetSpec(tempLDAPURL);
    }
    else
    {
        rv = mURL->SetSpec(URI);
    }
    NS_ENSURE_SUCCESS(rv,rv);

    // get the login information, if there is any 
    //
    rv = prefs->GetCharPref(
        PromiseFlatCString(
            Substring(mURINoQuery, kLDAPDirectoryRootLen,
                      mURINoQuery.Length() - kLDAPDirectoryRootLen)
            + NS_LITERAL_CSTRING(".auth.dn")).get(),
        getter_Copies(mLogin));
    if (NS_FAILED(rv)) {
        mLogin.Truncate();  // zero out mLogin
    }

    // get the protocol version, if there is any.  using a string pref
    // here instead of an int, as protocol versions sometimes have names like
    // "4bis".
    //
    nsXPIDLCString protocolVersion;
    rv = prefs->GetCharPref(
        PromiseFlatCString(
            Substring(mURINoQuery, kLDAPDirectoryRootLen,
                      mURINoQuery.Length() - kLDAPDirectoryRootLen)
            + NS_LITERAL_CSTRING(".protocolVersion")).get(),
        getter_Copies(protocolVersion));

    if (NS_SUCCEEDED(rv) && protocolVersion.Equals("2")) {
        mProtocolVersion = nsILDAPConnection::VERSION2;
    }
    // otherwise we leave mProtocolVersion as the default (see the initializers
    // for the nsAbLDAPDirectoryQuery class).

    mConnection = do_CreateInstance(NS_LDAPCONNECTION_CONTRACTID, &rv);
    NS_ENSURE_SUCCESS(rv, rv);

    mInitializedConnection = PR_TRUE;
    return rv;
}


/* 
 *
 * nsIAbDirectory methods
 *
 */

NS_IMETHODIMP nsAbLDAPDirectory::GetOperations(PRInt32 *aOperations)
{
    *aOperations = nsIAbDirectory::opSearch;
    return NS_OK;
}

NS_IMETHODIMP nsAbLDAPDirectory::GetChildNodes(nsISimpleEnumerator* *aResult)
{
    nsCOMArray<nsIAbDirectory> children;
    return NS_NewArrayEnumerator(aResult, children);
}

NS_IMETHODIMP nsAbLDAPDirectory::GetChildCards(nsIEnumerator** result)
{
    nsresult rv;
    
    // when offline, we need to get the child cards for the local, replicated mdb directory 
    PRBool offline;
    nsCOMPtr <nsIIOService> ioService = do_GetService(NS_IOSERVICE_CONTRACTID, &rv);
    NS_ENSURE_SUCCESS(rv,rv);
    rv = ioService->GetOffline(&offline);
    NS_ENSURE_SUCCESS(rv,rv);
    
    if (offline) {
      nsCOMPtr <nsIRDFService> rdfService = do_GetService("@mozilla.org/rdf/rdf-service;1",&rv);
      NS_ENSURE_SUCCESS(rv, rv);

      nsCOMPtr<nsIPrefBranch> prefs(do_GetService(NS_PREFSERVICE_CONTRACTID, &rv));
      NS_ENSURE_SUCCESS(rv, rv);

      // use mURINoQuery to get a prefName
      nsCAutoString prefName;
      prefName = nsDependentCString(mURINoQuery.get() + kLDAPDirectoryRootLen) + NS_LITERAL_CSTRING(".filename");

      nsXPIDLCString fileName;
      rv = prefs->GetCharPref(prefName.get(), getter_Copies(fileName));
      NS_ENSURE_SUCCESS(rv,rv);
      
      // if there is no fileName, bail out now.
      if (fileName.IsEmpty())
        return NS_OK;

      // perform the same query, but on the local directory
      nsCAutoString localDirectoryURI;
      localDirectoryURI = NS_LITERAL_CSTRING("moz-abmdbdirectory://") + fileName;
      if (mIsQueryURI)
        localDirectoryURI = localDirectoryURI + NS_LITERAL_CSTRING("?") + mQueryString;
      
      nsCOMPtr <nsIRDFResource> resource;
      rv = rdfService->GetResource(localDirectoryURI, getter_AddRefs(resource));
      NS_ENSURE_SUCCESS(rv, rv);
      
      nsCOMPtr <nsIAbDirectory> directory = do_QueryInterface(resource, &rv);
      NS_ENSURE_SUCCESS(rv, rv);

      rv = directory->GetChildCards(result);
    }
    else {
      // Start the search
      rv = StartSearch();
      NS_ENSURE_SUCCESS(rv, rv);
      
      nsCOMPtr<nsISupportsArray> array;
      NS_NewISupportsArray(getter_AddRefs(array));
      if (!array)
        return NS_ERROR_OUT_OF_MEMORY;
      
      rv = array->Enumerate(result);
    }

    NS_ENSURE_SUCCESS(rv,rv);
    return rv;
}

NS_IMETHODIMP nsAbLDAPDirectory::HasCard(nsIAbCard* card, PRBool* hasCard)
{
    nsresult rv;

    rv = Initiate ();
    NS_ENSURE_SUCCESS(rv, rv);

    nsVoidKey key (NS_STATIC_CAST(void* ,card));

    // Enter lock
    nsAutoLock lock (mLock);

    *hasCard = mCache.Exists (&key);
    if (!*hasCard && mPerformingQuery)
            return NS_ERROR_NOT_AVAILABLE;

    return NS_OK;
}

/* 
 *
 * nsAbLDAPDirectoryQuery methods
 *
 */

nsresult nsAbLDAPDirectory::GetLDAPConnection (nsILDAPConnection** connection)
{
    nsresult rv;

    rv = InitiateConnection ();
    NS_ENSURE_SUCCESS(rv, rv);

    NS_IF_ADDREF(*connection = mConnection);
    return rv;
}

nsresult nsAbLDAPDirectory::GetLDAPURL (nsILDAPURL** url)
{
    nsresult rv;

    rv = InitiateConnection ();
    NS_ENSURE_SUCCESS(rv, rv);

    NS_IF_ADDREF(*url = mURL);
    return rv;
}

nsresult nsAbLDAPDirectory::CreateCard (nsILDAPURL* uri, const char* dn, nsIAbCard** result)
{
    nsresult rv;

    nsCOMPtr <nsIAbCard> card = do_CreateInstance(NS_ABLDAPCARD_CONTRACTID, &rv);
    NS_ENSURE_SUCCESS(rv, rv);

    NS_IF_ADDREF(*result = card);
    return NS_OK;
}

/* 
 *
 * nsIAbDirectorySearch methods
 *
 */

NS_IMETHODIMP nsAbLDAPDirectory::StartSearch ()
{
    nsresult rv;
    
    if (!mIsQueryURI || mQueryString.IsEmpty())
        return NS_OK;

    rv = Initiate ();
    NS_ENSURE_SUCCESS(rv, rv);

    rv = StopSearch ();
    NS_ENSURE_SUCCESS(rv, rv);

    nsCOMPtr<nsIAbDirectoryQueryArguments> arguments = do_CreateInstance(NS_ABDIRECTORYQUERYARGUMENTS_CONTRACTID,&rv);
    NS_ENSURE_SUCCESS(rv, rv);

    rv = arguments->SetExpression (mExpression);
    NS_ENSURE_SUCCESS(rv, rv);

    // Set the return properties to
    // return nsIAbCard interfaces
    const char *arr = "card:nsIAbCard";
    rv = arguments->SetReturnProperties (1, &arr);
    NS_ENSURE_SUCCESS(rv, rv);

    rv = arguments->SetQuerySubDirectories (PR_TRUE);
    NS_ENSURE_SUCCESS(rv, rv);

    // Set the the query listener
    nsCOMPtr<nsIAbDirectoryQueryResultListener> queryListener;
    nsAbDirSearchListener* _queryListener =
        new nsAbDirSearchListener (this);
    queryListener = _queryListener;

    nsCOMPtr<nsIPrefBranch> prefs(do_GetService(NS_PREFSERVICE_CONTRACTID, &rv));
    NS_ENSURE_SUCCESS(rv, rv);

    // use mURINoQuery to get a prefName
    nsCAutoString prefName;
    prefName = nsDependentCString(mURINoQuery.get() + kLDAPDirectoryRootLen) + NS_LITERAL_CSTRING(".maxHits");

    // turn moz-abldapdirectory://ldap_2.servers.nscpphonebook into -> "ldap_2.servers.nscpphonebook.maxHits"
    PRInt32 maxHits;
    rv = prefs->GetIntPref(prefName.get(), &maxHits);
    if (NS_FAILED(rv))
      maxHits = 100;

    // get the appropriate ldap attribute map, and pass it in via the
    // TypeSpecificArgument
    nsCOMPtr<nsIAbLDAPAttributeMapService> mapSvc = 
        do_GetService("@mozilla.org/addressbook/ldap-attribute-map-service;1", &rv);
    NS_ENSURE_SUCCESS(rv, rv);

    nsCOMPtr<nsIAbLDAPAttributeMap> attrMap;
    rv = mapSvc->GetMapForPrefBranch(m_DirPrefId, getter_AddRefs(attrMap));
    NS_ENSURE_SUCCESS(rv, rv);

    nsCOMPtr<nsISupports> typeSpecificArg = do_QueryInterface(attrMap, &rv);
    NS_ENSURE_SUCCESS(rv, rv);

    rv = arguments->SetTypeSpecificArg(attrMap);
    NS_ENSURE_SUCCESS(rv, rv);


    // Perform the query
    rv = DoQuery(arguments, queryListener, maxHits, 0, &mContext);
    NS_ENSURE_SUCCESS(rv, rv);

    // Enter lock
    nsAutoLock lock (mLock);
    mPerformingQuery = PR_TRUE;
    mCache.Reset ();

    return rv;
}  

NS_IMETHODIMP nsAbLDAPDirectory::StopSearch ()
{
    nsresult rv;

    rv = Initiate ();
    NS_ENSURE_SUCCESS(rv, rv);

    // Enter lock
    {
        nsAutoLock lockGuard (mLock);
        if (!mPerformingQuery)
            return NS_OK;
        mPerformingQuery = PR_FALSE;
    }
    // Exit lock

    rv = StopQuery (mContext);

    return rv;
}


/* 
 *
 * nsAbDirSearchListenerContext methods
 *
 */
nsresult nsAbLDAPDirectory::OnSearchFinished (PRInt32 result)
{
    nsresult rv;

    rv = Initiate ();
    NS_ENSURE_SUCCESS(rv, rv);

    nsAutoLock lock (mLock);
    mPerformingQuery = PR_FALSE;

    return NS_OK;
}

nsresult nsAbLDAPDirectory::OnSearchFoundCard (nsIAbCard* card)
{
    nsresult rv;

    rv = Initiate ();
    NS_ENSURE_SUCCESS(rv, rv);

    nsVoidKey key (NS_STATIC_CAST(void* ,card));
    // Enter lock
    {
        nsAutoLock lock (mLock);
        mCache.Put (&key, card);
    }
    // Exit lock

    nsCOMPtr<nsIAddrBookSession> abSession = do_GetService(NS_ADDRBOOKSESSION_CONTRACTID, &rv);
    if(NS_SUCCEEDED(rv))
        abSession->NotifyDirectoryItemAdded(this, card);

    return NS_OK;
}

NS_IMETHODIMP nsAbLDAPDirectory::GetSupportsMailingLists(PRBool *aSupportsMailingsLists)
{
  NS_ENSURE_ARG_POINTER(aSupportsMailingsLists);
  *aSupportsMailingsLists = PR_FALSE;
  return NS_OK;
}

NS_IMETHODIMP nsAbLDAPDirectory::GetIsRemote(PRBool *aIsRemote)
{
  NS_ENSURE_ARG_POINTER(aIsRemote);
  *aIsRemote = PR_TRUE;
  return NS_OK;
}

NS_IMETHODIMP nsAbLDAPDirectory::GetIsSecure(PRBool *aIsSecure)
{
  NS_ENSURE_ARG_POINTER(aIsSecure);

  nsresult rv;
  nsCOMPtr<nsIPrefBranch> prefBranch(do_GetService(NS_PREFSERVICE_CONTRACTID, &rv));
  NS_ENSURE_SUCCESS(rv, rv);
  
  // use mURINoQuery to get a prefName
  nsCAutoString prefName;
  prefName = nsDependentCString(mURINoQuery.get() + kLDAPDirectoryRootLen) + NS_LITERAL_CSTRING(".uri");
  
  nsXPIDLCString URI;
  rv = prefBranch->GetCharPref(prefName.get(), getter_Copies(URI));
  NS_ENSURE_SUCCESS(rv,rv);
  
  // to determine if this is a secure directory, check if the uri is ldaps:// or not
  *aIsSecure = (strncmp(URI.get(), "ldaps:", 6) == 0);
  return NS_OK;
}

NS_IMETHODIMP nsAbLDAPDirectory::GetSearchDuringLocalAutocomplete(PRBool *aSearchDuringLocalAutocomplete)
{
  NS_ENSURE_ARG_POINTER(aSearchDuringLocalAutocomplete);

  // always skip LDAP directories when doing local autocomplete.
  // we do the LDAP autocompleting
  // in nsLDAPAutoCompleteSession
  *aSearchDuringLocalAutocomplete = PR_FALSE;
  return NS_OK;
}

NS_IMETHODIMP
nsAbLDAPDirectory::GetSearchClientControls(nsIMutableArray **aControls)
{
    NS_IF_ADDREF(*aControls = mSearchClientControls);
    return NS_OK;
}

NS_IMETHODIMP
nsAbLDAPDirectory::SetSearchClientControls(nsIMutableArray *aControls)
{
    mSearchClientControls = aControls;
    return NS_OK;
}

NS_IMETHODIMP
nsAbLDAPDirectory::GetSearchServerControls(nsIMutableArray **aControls)
{
    NS_IF_ADDREF(*aControls = mSearchServerControls);
    return NS_OK;
}

NS_IMETHODIMP
nsAbLDAPDirectory::SetSearchServerControls(nsIMutableArray *aControls)
{
    mSearchServerControls = aControls;
    return NS_OK;
}