/*
 * Copyright (C) 2006, 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. 
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 "DumpRenderTree.h"
#include "LayoutTestController.h"

#include "EditingDelegate.h"
#include "PolicyDelegate.h"
#include "WorkQueue.h"
#include "WorkQueueItem.h"
#include <WebCore/COMPtr.h>
#include <wtf/Platform.h>
#include <wtf/RetainPtr.h>
#include <wtf/Vector.h>
#include <JavaScriptCore/Assertions.h>
#include <JavaScriptCore/JavaScriptCore.h>
#include <JavaScriptCore/JSRetainPtr.h>
#include <WebKit/IWebHistory.h>
#include <WebKit/IWebPreferencesPrivate.h>
#include <WebKit/IWebViewPrivate.h>
#include <WebKit/WebKit.h>
#include <string>
#include <CoreFoundation/CoreFoundation.h>
#include <shlwapi.h>
#include <shlguid.h>
#include <shobjidl.h>

using std::string;
using std::wstring;

LayoutTestController::~LayoutTestController()
{
    COMPtr<IWebView> webView;
    if (FAILED(frame->webView(&webView)))
        return;

    // reset webview-related states back to default values in preparation for next test

    COMPtr<IWebViewPrivate> viewPrivate;
    if (SUCCEEDED(webView->QueryInterface(&viewPrivate)))
        viewPrivate->setTabKeyCyclesThroughElements(TRUE);

    COMPtr<IWebViewEditing> viewEditing;
    if (FAILED(webView->QueryInterface(&viewEditing)))
        return;
    COMPtr<IWebEditingDelegate> delegate;
    if (FAILED(viewEditing->editingDelegate(&delegate)))
        return;
    COMPtr<EditingDelegate> editingDelegate(Query, viewEditing.get());
    if (editingDelegate)
        editingDelegate->setAcceptsEditing(TRUE);
}

void LayoutTestController::addDisallowedURL(JSStringRef url)
{
    // FIXME: Implement!
}

void LayoutTestController::clearBackForwardList()
{
    COMPtr<IWebView> webView;
    if (FAILED(frame->webView(&webView)))
        return;

    COMPtr<IWebBackForwardList> backForwardList;
    if (FAILED(webView->backForwardList(&backForwardList)))
        return;

    COMPtr<IWebHistoryItem> item;
    if (FAILED(backForwardList->currentItem(&item)))
        return;

    // We clear the history by setting the back/forward list's capacity to 0
    // then restoring it back and adding back the current item.
    int capacity;
    if (FAILED(backForwardList->capacity(&capacity)))
        return;

    backForwardList->setCapacity(0);
    backForwardList->setCapacity(capacity);
    backForwardList->addItem(item.get());
    backForwardList->goToItem(item.get());
}

JSStringRef LayoutTestController::copyDecodedHostName(JSStringRef name)
{
    // FIXME: Implement!
    return 0;
}

JSStringRef LayoutTestController::copyEncodedHostName(JSStringRef name)
{
    // FIXME: Implement!
    return 0;
}

void LayoutTestController::display()
{
    displayWebView();
}

void LayoutTestController::keepWebHistory()
{
    COMPtr<IWebHistory> history(Create, CLSID_WebHistory);
    if (!history)
        return;

    COMPtr<IWebHistory> sharedHistory(Create, CLSID_WebHistory);
    if (!sharedHistory)
        return;

    history->setOptionalSharedHistory(sharedHistory.get());
}

void LayoutTestController::notifyDone()
{
    // Same as on mac.  This can be shared.
    if (m_waitToDump && !topLoadingFrame && !WorkQueue::shared()->count())
        dump();
    m_waitToDump = false;
}

void LayoutTestController::queueBackNavigation(int howFarBack)
{
    // Same as on mac.  This can be shared.
    WorkQueue::shared()->queue(new BackItem(howFarBack));
}

void LayoutTestController::queueForwardNavigation(int howFarForward)
{
    // Same as on mac.  This can be shared.
    WorkQueue::shared()->queue(new ForwardItem(howFarForward));
}

static wstring jsStringRefToWString(JSStringRef jsStr)
{
    size_t length = JSStringGetLength(jsStr);
    Vector<WCHAR> buffer(length + 1);
    memcpy(buffer.data(), JSStringGetCharactersPtr(jsStr), length * sizeof(WCHAR));
    buffer[length] = '\0';

    return buffer.data();
}

void LayoutTestController::queueLoad(JSStringRef url, JSStringRef target)
{
    COMPtr<IWebDataSource> dataSource;
    if (FAILED(frame->dataSource(&dataSource)))
        return;

    COMPtr<IWebURLResponse> response;
    if (FAILED(dataSource->response(&response)) || !response)
        return;

    BSTR responseURLBSTR;
    if (FAILED(response->URL(&responseURLBSTR)))
        return;
    wstring responseURL(responseURLBSTR, SysStringLen(responseURLBSTR));
    SysFreeString(responseURLBSTR);

    // FIXME: We should do real relative URL resolution here.
    int lastSlash = responseURL.rfind('/');
    if (lastSlash != -1)
        responseURL = responseURL.substr(0, lastSlash);

    wstring wURL = jsStringRefToWString(url);
    wstring wAbosuluteURL = responseURL + TEXT("/") + wURL;
    JSRetainPtr<JSStringRef> jsAbsoluteURL(Adopt, JSStringCreateWithCharacters(wAbosuluteURL.data(), wAbosuluteURL.length()));

    WorkQueue::shared()->queue(new LoadItem(jsAbsoluteURL.get(), target));
}

void LayoutTestController::queueReload()
{
    WorkQueue::shared()->queue(new ReloadItem);
}

void LayoutTestController::queueScript(JSStringRef script)
{
    WorkQueue::shared()->queue(new ScriptItem(script));
}

void LayoutTestController::setAcceptsEditing(bool acceptsEditing)
{
    COMPtr<IWebView> webView;
    if (FAILED(frame->webView(&webView)))
        return;

    COMPtr<IWebViewEditing> viewEditing;
    if (FAILED(webView->QueryInterface(&viewEditing)))
        return;

    COMPtr<IWebEditingDelegate> delegate;
    if (FAILED(viewEditing->editingDelegate(&delegate)))
        return;

    EditingDelegate* editingDelegate = (EditingDelegate*)(IWebEditingDelegate*)delegate.get();
    editingDelegate->setAcceptsEditing(acceptsEditing);
}

void LayoutTestController::setAuthorAndUserStylesEnabled(bool flag)
{
    COMPtr<IWebView> webView;
    if (FAILED(frame->webView(&webView)))
        return;

    COMPtr<IWebPreferences> preferences;
    if (FAILED(webView->preferences(&preferences)))
        return;

    COMPtr<IWebPreferencesPrivate> prefsPrivate(Query, preferences);
    if (!prefsPrivate)
        return;

    prefsPrivate->setAuthorAndUserStylesEnabled(flag);
}

void LayoutTestController::setCustomPolicyDelegate(bool setDelegate)
{
    COMPtr<IWebView> webView;
    if (FAILED(frame->webView(&webView)))
        return;

    if (setDelegate)
        webView->setPolicyDelegate(policyDelegate);
    else
        webView->setPolicyDelegate(NULL);
}

void LayoutTestController::setMainFrameIsFirstResponder(bool flag)
{
    // FIXME: Implement!
}

void LayoutTestController::setPrivateBrowsingEnabled(bool privateBrowsingEnabled)
{
    COMPtr<IWebView> webView;
    if (FAILED(frame->webView(&webView)))
        return;

    COMPtr<IWebPreferences> preferences;
    if (FAILED(webView->preferences(&preferences)))
        return;

    preferences->setPrivateBrowsingEnabled(privateBrowsingEnabled);
}

void LayoutTestController::setTabKeyCyclesThroughElements(bool shouldCycle)
{
    COMPtr<IWebView> webView;
    if (FAILED(frame->webView(&webView)))
        return;

    COMPtr<IWebViewPrivate> viewPrivate;
    if (FAILED(webView->QueryInterface(&viewPrivate)))
        return;

    viewPrivate->setTabKeyCyclesThroughElements(shouldCycle ? TRUE : FALSE);
}

void LayoutTestController::setUseDashboardCompatibilityMode(bool flag)
{
    // FIXME: Implement!
}

void LayoutTestController::setUserStyleSheetEnabled(bool flag)
{
    COMPtr<IWebView> webView;
    if (FAILED(frame->webView(&webView)))
        return;

    COMPtr<IWebPreferences> preferences;
    if (FAILED(webView->preferences(&preferences)))
        return;

   preferences->setUserStyleSheetEnabled(flag);
}

bool appendComponentToPath(wstring& path, const wstring& component)
{
    WCHAR buffer[MAX_PATH];

    if (path.size() + 1 > MAX_PATH)
        return false;

    memcpy(buffer, path.data(), path.size() * sizeof(WCHAR));
    buffer[path.size()] = '\0';

    if (!PathAppendW(buffer, component.c_str()))
        return false;

    path = wstring(buffer);
    return true;
}

static bool followShortcuts(wstring& path)
{
    if (PathFileExists(path.c_str()))
        return true;

    // Do we have a shortcut?
    path.append(TEXT(".lnk"));
    if (!PathFileExists(path.c_str()))
       return false;

    // We have a shortcut, find its target.
    COMPtr<IShellLink> shortcut(Create, CLSID_ShellLink);
    if (!shortcut)
       return false;
    COMPtr<IPersistFile> persistFile(Query, shortcut);
    if (!shortcut)
        return false;
    if (FAILED(persistFile->Load(path.c_str(), STGM_READ)))
        return false;
    if (FAILED(shortcut->Resolve(0, 0)))
        return false;
    WCHAR targetPath[MAX_PATH];
    DWORD targetPathLen = _countof(targetPath);
    if (FAILED(shortcut->GetPath(targetPath, targetPathLen, 0, 0)))
        return false;
    if (!PathFileExists(targetPath))
        return false;
    // Use the target path as the result path instead.
    path = wstring(targetPath);

    return true;
}

static bool resolveCygwinPath(const wstring& cygwinPath, wstring& windowsPath)
{
    if (cygwinPath[0] != '/')
        return false;

    // Get the Root path.
    WCHAR rootPath[MAX_PATH];
    DWORD rootPathSize = _countof(rootPath);
    DWORD keyType;
    DWORD result = ::SHGetValueW(HKEY_LOCAL_MACHINE, TEXT("SOFTWARE\\Cygnus Solutions\\Cygwin\\mounts v2\\/"), TEXT("native"), &keyType, &rootPath, &rootPathSize);
    
    if (result != ERROR_SUCCESS || keyType != REG_SZ)
        return false;

    windowsPath = wstring(rootPath, rootPathSize);

    int oldPos = 1;
    while (1) {
        int newPos = cygwinPath.find('/', oldPos);

        if (newPos == -1) {
            wstring pathComponent = cygwinPath.substr(oldPos);

            if (!appendComponentToPath(windowsPath, pathComponent))
               return false;

            if (!followShortcuts(windowsPath))
                return false;

            break;
        }

        wstring pathComponent = cygwinPath.substr(oldPos, newPos - oldPos);
        if (!appendComponentToPath(windowsPath, pathComponent))
            return false;

        if (!followShortcuts(windowsPath))
            return false;

        oldPos = newPos + 1;
    }
    return true;
}

static wstring cfStringRefToWString(CFStringRef cfStr)
{
    Vector<wchar_t> v(CFStringGetLength(cfStr));
    CFStringGetCharacters(cfStr, CFRangeMake(0, CFStringGetLength(cfStr)), (UniChar *)v.data());

    return wstring(v.data(), v.size());
}

void LayoutTestController::setUserStyleSheetLocation(JSStringRef jsURL)
{
    COMPtr<IWebView> webView;
    if (FAILED(frame->webView(&webView)))
        return;

    COMPtr<IWebPreferences> preferences;
    if (FAILED(webView->preferences(&preferences)))
        return;

    RetainPtr<CFStringRef> urlString(AdoptCF, JSStringCopyCFString(0, jsURL));
    RetainPtr<CFURLRef> url(AdoptCF, CFURLCreateWithString(0, urlString.get(), 0));
    if (!url)
        return;

    // Now copy the file system path, POSIX style.
    RetainPtr<CFStringRef> pathCF(AdoptCF, CFURLCopyFileSystemPath(url.get(), kCFURLPOSIXPathStyle));
    if (!pathCF)
        return;

    wstring path = cfStringRefToWString(pathCF.get());

    wstring resultPath;
    if (!resolveCygwinPath(path, resultPath))
        return;

    // The path has been resolved, now convert it back to a CFURL.
    int result = WideCharToMultiByte(CP_UTF8, 0, resultPath.c_str(), resultPath.size() + 1, 0, 0, 0, 0);
    Vector<char> utf8Vector(result);
    result = WideCharToMultiByte(CP_UTF8, 0, resultPath.c_str(), resultPath.size() + 1, utf8Vector.data(), result, 0, 0);
    if (!result)
        return;

    url = CFURLCreateFromFileSystemRepresentation(0, (const UInt8*)utf8Vector.data(), utf8Vector.size() - 1, false);
    if (!url)
        return;

    resultPath = cfStringRefToWString(CFURLGetString(url.get()));

    BSTR resultPathBSTR = SysAllocStringLen(resultPath.data(), resultPath.size());
    preferences->setUserStyleSheetLocation(resultPathBSTR);
    SysFreeString(resultPathBSTR);
}

void LayoutTestController::setWindowIsKey(bool flag)
{
    COMPtr<IWebView> webView;
    if (FAILED(frame->webView(&webView)))
        return;

    COMPtr<IWebViewPrivate> viewPrivate;
    if (FAILED(webView->QueryInterface(&viewPrivate)))
        return;

    HWND webViewWindow;
    if (FAILED(viewPrivate->viewWindow((OLE_HANDLE*)&webViewWindow)))
        return;

    ::SendMessage(webViewWindow, flag ? WM_SETFOCUS : WM_KILLFOCUS, (WPARAM)::GetDesktopWindow(), 0);
}

static const CFTimeInterval waitToDumpWatchdogInterval = 10.0;

static void waitUntilDoneWatchdogFired(CFRunLoopTimerRef timer, void* info)
{
    const char* message = "FAIL: Timed out waiting for notifyDone to be called\n";
    fprintf(stderr, message);
    fprintf(stdout, message);
    dump();
}

void LayoutTestController::setWaitToDump(bool waitUntilDone)
{
    // Same as on mac.  This can be shared.
    m_waitToDump = waitUntilDone;
    if (m_waitToDump && !waitToDumpWatchdog)
        ::waitToDumpWatchdog = CFRunLoopTimerCreate(0, 0, waitToDumpWatchdogInterval, 0, 0, waitUntilDoneWatchdogFired, NULL);
}

int LayoutTestController::windowCount()
{
    // FIXME: Implement!
    return 1;
}