/*

 * Copyright (C) 2007 Apple Inc.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

 */

#include "config.h"

#include "WebKitDLL.h"

#include "DefaultDownloadDelegate.h"

#include "MarshallingHelpers.h"

#include "WebKit.h"

#include "WebKitLogging.h"

#include "WebMutableURLRequest.h"

#include <shlobj.h>

#include <tchar.h>

#pragma warning(push, 0)

#include <WebCore/BString.h>

#pragma warning(pop)

using namespace WebCore;

// DefaultDownloadDelegate ----------------------------------------------------------------

DefaultDownloadDelegate::DefaultDownloadDelegate()

    : m_refCount(0)

{

    gClassCount++;

}

DefaultDownloadDelegate::~DefaultDownloadDelegate()

{

    gClassCount--;

    HashSet<IWebDownload*>::iterator i = m_downloads.begin();

    for (;i != m_downloads.end(); ++i)

        (*i)->Release();

}

DefaultDownloadDelegate* DefaultDownloadDelegate::sharedInstance()

{

    static COMPtr<DefaultDownloadDelegate> shared;

    if (!shared)

        shared.adoptRef(DefaultDownloadDelegate::createInstance());

    return shared.get();

}

DefaultDownloadDelegate* DefaultDownloadDelegate::createInstance()

{

    DefaultDownloadDelegate* instance = new DefaultDownloadDelegate();

    instance->AddRef();

    return instance;

}

// IUnknown -------------------------------------------------------------------

HRESULT STDMETHODCALLTYPE DefaultDownloadDelegate::QueryInterface(REFIID riid, void** ppvObject)

{

    *ppvObject = 0;

    if (IsEqualGUID(riid, IID_IUnknown))

        *ppvObject = static_cast<IUnknown*>(this);

    else if (IsEqualGUID(riid, IID_IWebDownloadDelegate))

        *ppvObject = static_cast<IWebDownloadDelegate*>(this);

    else

        return E_NOINTERFACE;

    AddRef();

    return S_OK;

}

ULONG STDMETHODCALLTYPE DefaultDownloadDelegate::AddRef()

{

    return ++m_refCount;

}

ULONG STDMETHODCALLTYPE DefaultDownloadDelegate::Release()

{

    ULONG newRef = --m_refCount;

    if (!newRef)

        delete(this);

    return newRef;

}

HRESULT STDMETHODCALLTYPE DefaultDownloadDelegate::decideDestinationWithSuggestedFilename(IWebDownload *download, BSTR filename)

{

    LOG(Download, "DefaultDownloadDelegate %p - decideDestinationWithSuggestedFilename %s", download, String(filename, SysStringLen(filename)).ascii().data());

    TCHAR pathChars[MAX_PATH];

    if (FAILED(SHGetFolderPath(0, CSIDL_DESKTOPDIRECTORY  | CSIDL_FLAG_CREATE, 0, 0, pathChars))) {

        if (FAILED(download->setDestination(filename, true))) {

            LOG_ERROR("Failed to set destination on file");

            return E_FAIL;

        }  

        return S_OK;

    }

    size_t fullLength = _tcslen(pathChars) + SysStringLen(filename) + 2;

    BSTR full = SysAllocStringLen(0, (UINT)fullLength);

    if (!full)

        return E_OUTOFMEMORY;

    _tcscpy_s(full, fullLength, pathChars);

    _tcscat_s(full, fullLength, _T("\\"));

    _tcscat_s(full, fullLength, filename);

    BString fullPath;

    fullPath.adoptBSTR(full);

#ifndef NDEBUG

    String debug((BSTR)fullPath, SysStringLen(BSTR(fullPath)));

    LOG(Download, "Setting path to %s", debug.ascii().data());

#endif

    if (FAILED(download->setDestination(fullPath, true))) {

        LOG_ERROR("Failed to set destination on file");

        return E_FAIL;

    }

    return S_OK;

}

HRESULT STDMETHODCALLTYPE DefaultDownloadDelegate::didCancelAuthenticationChallenge(IWebDownload* download, IWebURLAuthenticationChallenge* challenge)

{

    LOG(Download, "DefaultDownloadDelegate %p - didCancelAuthenticationChallenge %p", download, challenge);

    download = 0;

    challenge = 0;

    return S_OK;

}

HRESULT STDMETHODCALLTYPE DefaultDownloadDelegate::didCreateDestination(IWebDownload* download, BSTR destination)

{

    LOG(Download, "DefaultDownloadDelegate %p - didCreateDestination %s", download, String(destination, SysStringLen(destination)).ascii().data());

    download = 0;

    destination = 0;

    return S_OK;

}

HRESULT STDMETHODCALLTYPE DefaultDownloadDelegate::didReceiveAuthenticationChallenge(IWebDownload* download, IWebURLAuthenticationChallenge* challenge)

{

    LOG(Download, "DefaultDownloadDelegate %p - didReceiveAuthenticationChallenge %p", download, challenge);

    download = 0;

    challenge = 0;

    return S_OK;

}

HRESULT STDMETHODCALLTYPE DefaultDownloadDelegate::didReceiveDataOfLength(IWebDownload* download, unsigned length)

{

    LOG(Download, "DefaultDownloadDelegate %p - didReceiveDataOfLength %i", download, length);

    download = 0;

    length = 0;

    return S_OK;

}

HRESULT STDMETHODCALLTYPE DefaultDownloadDelegate::didReceiveResponse(IWebDownload* download, IWebURLResponse* response)

{

    LOG(Download, "DefaultDownloadDelegate %p - didReceiveResponse %p", download, response);

    download = 0;

    response = 0;

    return S_OK;

}

HRESULT STDMETHODCALLTYPE DefaultDownloadDelegate::shouldDecodeSourceDataOfMIMEType(IWebDownload* download, BSTR encodingType, BOOL* shouldDecode)

{

    LOG(Download, "DefaultDownloadDelegate %p - shouldDecodeSourceDataOfMIMEType %s", download, String(encodingType, SysStringLen(encodingType)).ascii().data());

    download = 0;

    encodingType = 0;

    *shouldDecode = false;

    return S_OK;

}

HRESULT STDMETHODCALLTYPE DefaultDownloadDelegate::willResumeWithResponse(IWebDownload* download, IWebURLResponse* response, long long fromByte)

{

    LOG(Download, "DefaultDownloadDelegate %p - willResumeWithResponse %p, %q", download, response, fromByte);

    download = 0;

    response = 0;

    fromByte = 0;

    return S_OK;

}

HRESULT STDMETHODCALLTYPE DefaultDownloadDelegate::willSendRequest(IWebDownload* download, IWebMutableURLRequest* request,  

                                                                 IWebURLResponse* redirectResponse, IWebMutableURLRequest** finalRequest)

{

    LOG(Download, "DefaultDownloadDelegate %p - willSendRequest %p %p", download, request, redirectResponse);

    download = 0;

    redirectResponse = 0;

    *finalRequest = request;

    return S_OK;

}

HRESULT STDMETHODCALLTYPE DefaultDownloadDelegate::didBegin(IWebDownload* download)

{

    LOG(Download, "DefaultDownloadDelegate %p - didBegin", download);

    registerDownload(download);

    return S_OK;

}

HRESULT STDMETHODCALLTYPE DefaultDownloadDelegate::didFinish(IWebDownload* download)

{

    LOG(Download, "DefaultDownloadDelegate %p - didFinish", download);

    unregisterDownload(download);

    return S_OK;

}

HRESULT STDMETHODCALLTYPE DefaultDownloadDelegate::didFailWithError(IWebDownload* download, IWebError* error)

{

    LOG(Download, "DefaultDownloadDelegate %p - didFailWithError %p", download, error);

    unregisterDownload(download);

    error = 0;

    return S_OK;

}

void DefaultDownloadDelegate::registerDownload(IWebDownload* download)

{

    if (m_downloads.contains(download))

        return;

    download->AddRef();

    m_downloads.add(download);

}

void DefaultDownloadDelegate::unregisterDownload(IWebDownload* download)

{

    if (m_downloads.contains(download)) {

        download->Release();

        m_downloads.remove(download);

    }

}