/* -*- Mode: C++; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * 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 the Mozilla browser.
 * 
 * The Initial Developer of the Original Code is Netscape
 * Communications, Inc.  Portions created by Netscape are
 * Copyright (C) 1999, Mozilla.  All Rights Reserved.
 * 
 * Contributor(s):
 *   Scott MacGregor <mscott@netscape.com>
 */

#include "nsOSHelperAppService.h"
#include "nsISupports.h"
#include "nsString.h"
#include "nsXPIDLString.h"
#include "nsIURL.h"
#include "nsILocalFile.h"
#include <stdlib.h>		// for system()


nsOSHelperAppService::nsOSHelperAppService() : nsExternalHelperAppService()
{
}

nsOSHelperAppService::~nsOSHelperAppService()
{}


NS_IMETHODIMP nsOSHelperAppService::CanHandleContent(const char *aMimeContentType, nsIURI * aURI, PRBool * aCanHandleContent)
{
  // once we have user over ride stuff working, we need to first call up to our base class
  // and ask the base class if we can handle the content. This will take care of looking for user specified 
  // apps for content types.
  
  // for now we only have defaults to worry about...
  // go look up in the windows registry to see if there is a handler for this mime type...if there is return TRUE...

  *aCanHandleContent = PR_FALSE;
  return NS_OK;
}

NS_IMETHODIMP nsOSHelperAppService::DoContent(const char *aMimeContentType, nsIURI *aURI, nsISupports *aWindowContext, 
                                                    PRBool *aAbortProcess, nsIStreamListener ** aStreamListener)
{
   nsresult rv = NS_OK;
  
  // see if we have user specified information for handling this content type by giving the base class
  // first crack at it...
  
  rv = nsExternalHelperAppService::DoContent(aMimeContentType, aURI, aWindowContext, aAbortProcess, aStreamListener);
  
  // this is important!! if do content for the base class returned any success code, then assume we are done
  // and don't even play around with 
  if (NS_SUCCEEDED(rv)) return NS_OK;
  
  // there is no registry on linux (like there is on win32)
  // so we can only make up a dummy mime type for this content....
  nsCOMPtr<nsIMIMEInfo> mimeInfo (do_CreateInstance(NS_MIMEINFO_CONTRACTID));
  nsCAutoString fileExtension;

  *aStreamListener = nsnull;
  if (aURI)
  {
    nsCOMPtr<nsIURL> url = do_QueryInterface(aURI);
    if (url) {
      nsXPIDLCString extenion;
      url->GetFileExtension(getter_Copies(extenion));
    
      fileExtension = ".";  
      fileExtension.Append(extenion);
    }
  }

  if (mimeInfo)
  {  
    if (!fileExtension.IsEmpty())
      mimeInfo->SetFileExtensions(fileExtension);
    mimeInfo->SetMIMEType(aMimeContentType);

    // this code is incomplete and just here to get things started..
    nsExternalAppHandler * handler = CreateNewExternalHandler(mimeInfo, fileExtension, aWindowContext);
    handler->QueryInterface(NS_GET_IID(nsIStreamListener), (void **) aStreamListener);
  }

  return NS_OK;
}

NS_IMETHODIMP nsOSHelperAppService::LaunchAppWithTempFile(nsIMIMEInfo * aMIMEInfo, nsIFile * aTempFile)
{
  nsresult rv = NS_OK;
  if (aMIMEInfo)
  {
    nsCOMPtr<nsIFile> application;
    nsXPIDLCString path;
    aTempFile->GetPath(getter_Copies(path));
    
    aMIMEInfo->GetPreferredApplicationHandler(getter_AddRefs(application));
    if (application)
    {
      // if we were given an application to use then use it....otherwise
      // make the registry call to launch the app
      const char * strPath = (const char *) path;
      application->Spawn(&strPath, 1);
    }    
    else
    {
      // if we had hooks into the OS we can use them here to launch the app
    }
  }

  return rv;
}

NS_IMETHODIMP nsOSHelperAppService::ExternalProtocolHandlerExists(const char * aProtocolScheme, PRBool * aHandlerExists)
{
  // look up the protocol scheme in the windows registry....if we find a match then we have a handler for it...
  *aHandlerExists = PR_FALSE;
  return NS_OK;
}

NS_IMETHODIMP nsOSHelperAppService::LoadUrl(nsIURI * aURL)
{
  return NS_ERROR_FAILURE;
}

nsresult nsOSHelperAppService::GetFileTokenForPath(const PRUnichar * platformAppPath, nsIFile ** aFile)
{
  nsCOMPtr<nsILocalFile> localFile (do_CreateInstance(NS_LOCAL_FILE_CONTRACTID));
  nsresult rv = NS_OK;

  if (localFile)
  {
    if (localFile)
      localFile->InitWithUnicodePath(platformAppPath);
    *aFile = localFile;
    NS_IF_ADDREF(*aFile);
  }
  else
    rv = NS_ERROR_FAILURE;

  return rv;
}