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 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Netscape 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/NPL/
 *
 * 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) 1999
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * 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
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#include "nsStatusBarBiffManager.h"
#include "nsMsgBiffManager.h"
#include "nsCRT.h"
#include "nsIMsgMailSession.h"
#include "nsIMsgAccountManager.h"
#include "nsMsgBaseCID.h"
#include "nsIObserverService.h"
#include "nsIWindowMediator.h"
#include "nsIDOMDocument.h"
#include "nsIDOMWindowInternal.h"
#include "nsIDOMElement.h"
#include "nsIMsgMailSession.h"
#include "nsMsgFolderDataSource.h"
#include "MailNewsTypes.h"
#include "nsIMsgFolder.h" // TO include biffState enum. Change to bool later...
#include "nsIFileChannel.h"
#include "nsISound.h"
#include "nsIPref.h"
#include "nsXPIDLString.h"
#include "nsIURL.h"
#include "nsNetUtil.h"

static NS_DEFINE_CID(kMsgAccountManagerCID, NS_MSGACCOUNTMANAGER_CID);
static NS_DEFINE_CID(kMsgMailSessionCID,    NS_MSGMAILSESSION_CID);

// QueryInterface, AddRef, and Release
//
NS_IMPL_ISUPPORTS1(nsStatusBarBiffManager, nsIFolderListener)

nsIAtom * nsStatusBarBiffManager::kBiffStateAtom = nsnull;

nsStatusBarBiffManager::nsStatusBarBiffManager()
: mInitialized(PR_FALSE), mCurrentBiffState(nsIMsgFolder::nsMsgBiffState_NoMail)
{
	NS_INIT_ISUPPORTS();
}

nsStatusBarBiffManager::~nsStatusBarBiffManager()
{
    NS_RELEASE(kBiffStateAtom);
}

#define PREF_PLAY_SOUND_ON_NEW_MAIL      "mail.biff.play_sound"

nsresult nsStatusBarBiffManager::Init()
{
  if (mInitialized)
    return NS_ERROR_ALREADY_INITIALIZED;

  nsresult rv;

  kBiffStateAtom = NS_NewAtom("BiffState");

  nsCOMPtr<nsIMsgMailSession> mailSession = 
    do_GetService(kMsgMailSessionCID, &rv); 
  if(NS_SUCCEEDED(rv))
    mailSession->AddFolderListener(this, nsIFolderListener::propertyFlagChanged);

  mInitialized = PR_TRUE;
  return NS_OK;
}

nsresult nsStatusBarBiffManager::Shutdown()
{
	return NS_OK;
}


nsresult nsStatusBarBiffManager::PerformStatusBarBiff(PRUint32 newBiffFlag)
{
    // See nsMsgStatusFeedback
    nsresult rv;

    // if we got new mail, attempt to play a sound.
    // if we fail along the way, don't return.
    // we still need to update the UI.    
    if (newBiffFlag == nsIMsgFolder::nsMsgBiffState_NewMail) {
      nsCOMPtr<nsIPref> pref = do_GetService(NS_PREF_CONTRACTID);
      if (pref) {
        PRBool playSoundOnBiff = PR_FALSE;
        rv = pref->GetBoolPref(PREF_PLAY_SOUND_ON_NEW_MAIL, &playSoundOnBiff);
        if (NS_SUCCEEDED(rv) && playSoundOnBiff) {
          nsCOMPtr<nsISound> sound = do_CreateInstance("@mozilla.org/sound;1");
          if (sound) {
            rv = sound->PlaySystemSound("_moz_mailbeep");
          } 
        }
      }
    }
    
    nsCOMPtr<nsIWindowMediator> windowMediator = 
      do_GetService(NS_WINDOWMEDIATOR_CONTRACTID, &rv);
    NS_ENSURE_SUCCESS(rv,rv);

    nsCOMPtr<nsISimpleEnumerator> windowEnumerator;

	// why use DOM window enumerator instead of XUL window...????
	if (NS_SUCCEEDED(windowMediator->GetEnumerator(nsnull, getter_AddRefs(windowEnumerator))))
	{ 
		PRBool more;
	
		windowEnumerator->HasMoreElements(&more);

		while(more)
		{
			nsCOMPtr<nsISupports> nextWindow = nsnull;
			windowEnumerator->GetNext(getter_AddRefs(nextWindow));
			nsCOMPtr<nsIDOMWindowInternal> domWindow(do_QueryInterface(nextWindow));
			NS_ENSURE_TRUE(domWindow, NS_ERROR_FAILURE);

			nsCOMPtr<nsIDOMDocument> domDocument;
			domWindow->GetDocument(getter_AddRefs(domDocument));

			if(domDocument)
			{
				nsCOMPtr<nsIDOMElement> domElement;
				domDocument->GetElementById(NS_LITERAL_STRING("mini-mail"), getter_AddRefs(domElement));

				if (domElement) {
					if (newBiffFlag == nsIMsgFolder::nsMsgBiffState_NewMail) {
						domElement->SetAttribute(NS_LITERAL_STRING("BiffState"), NS_LITERAL_STRING("NewMail"));
					}
					else if (newBiffFlag == nsIMsgFolder::nsMsgBiffState_NoMail){
						domElement->RemoveAttribute(NS_LITERAL_STRING("BiffState"));
					}
				}
			}
			
			windowEnumerator->HasMoreElements(&more);
		}

	}

	return NS_OK;
}

// nsIFolderListener methods....
NS_IMETHODIMP 
nsStatusBarBiffManager::OnItemAdded(nsISupports *parentItem, nsISupports *item, const char *viewString)
{
	return NS_OK;
}

NS_IMETHODIMP 
nsStatusBarBiffManager::OnItemRemoved(nsISupports *parentItem, nsISupports *item, const char *viewString)
{
	return NS_OK;
}

NS_IMETHODIMP 
nsStatusBarBiffManager::OnItemPropertyChanged(nsISupports *item, nsIAtom *property, const char *oldValue, const char *newValue)
{
	return NS_OK;
}

NS_IMETHODIMP
nsStatusBarBiffManager::OnItemIntPropertyChanged(nsISupports *item, nsIAtom *property, PRInt32 oldValue, PRInt32 newValue)
{
	return NS_OK;
}

NS_IMETHODIMP 
nsStatusBarBiffManager::OnItemBoolPropertyChanged(nsISupports *item, nsIAtom *property, PRBool oldValue, PRBool newValue)
{
	return NS_OK;
}

NS_IMETHODIMP 
nsStatusBarBiffManager::OnItemUnicharPropertyChanged(nsISupports *item, nsIAtom *property, const PRUnichar *oldValue, const PRUnichar *newValue)
{
	return NS_OK;
}

NS_IMETHODIMP 
nsStatusBarBiffManager::OnItemPropertyFlagChanged(nsISupports *item, nsIAtom *property, PRUint32 oldFlag, PRUint32 newFlag)
{
	if (kBiffStateAtom == property)
	{
		if (mCurrentBiffState != newFlag) {
			PerformStatusBarBiff(newFlag);
			mCurrentBiffState = newFlag;
		}
	}

	return NS_OK;
}

NS_IMETHODIMP 
nsStatusBarBiffManager::OnItemEvent(nsIFolder *item, nsIAtom *event)
{
	return NS_OK;
}