/*
 * Copyright 2010 Jacek Caban for CodeWeavers
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include "config.h"

#include <stdarg.h>

#define COBJMACROS

#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "ole2.h"
#include "shlobj.h"

#include "mshtml_private.h"
#include "pluginhost.h"

#include "wine/debug.h"
#include "wine/unicode.h"

WINE_DEFAULT_DEBUG_CHANNEL(mshtml);

static void activate_plugin(PluginHost *host)
{
    IClientSecurity *client_security;
    IQuickActivate *quick_activate;
    HRESULT hres;

    if(!host->plugin_unk)
        return;

    /* Note native calls QI on plugin for an undocumented IID and CLSID_HTMLDocument */

    /* FIXME: call FreezeEvents(TRUE) */

    hres = IUnknown_QueryInterface(host->plugin_unk, &IID_IClientSecurity, (void**)&client_security);
    if(SUCCEEDED(hres)) {
        FIXME("Handle IClientSecurity\n");
        IClientSecurity_Release(client_security);
        return;
    }

    hres = IUnknown_QueryInterface(host->plugin_unk, &IID_IQuickActivate, (void**)&quick_activate);
    if(SUCCEEDED(hres)) {
        QACONTAINER container = {sizeof(container)};
        QACONTROL control = {sizeof(control)};

        container.pClientSite = &host->IOleClientSite_iface;
        container.dwAmbientFlags = QACONTAINER_SUPPORTSMNEMONICS|QACONTAINER_MESSAGEREFLECT|QACONTAINER_USERMODE;
        container.pAdviseSink = &host->IAdviseSinkEx_iface;
        container.pPropertyNotifySink = NULL; /* FIXME */

        hres = IQuickActivate_QuickActivate(quick_activate, &container, &control);
        if(FAILED(hres))
            FIXME("QuickActivate failed: %08x\n", hres);
    }else {
        FIXME("No IQuickActivate\n");
    }
}

void update_plugin_window(PluginHost *host, HWND hwnd, const RECT *rect)
{
    if(!hwnd || (host->hwnd && host->hwnd != hwnd)) {
        FIXME("unhandled hwnd\n");
        return;
    }

    if(!host->hwnd) {
        host->hwnd = hwnd;
        activate_plugin(host);
    }
}

static inline PluginHost *impl_from_IOleClientSite(IOleClientSite *iface)
{
    return CONTAINING_RECORD(iface, PluginHost, IOleClientSite_iface);
}

static HRESULT WINAPI PHClientSite_QueryInterface(IOleClientSite *iface, REFIID riid, void **ppv)
{
    PluginHost *This = impl_from_IOleClientSite(iface);

    if(IsEqualGUID(&IID_IUnknown, riid)) {
        TRACE("(%p)->(IID_IUnknown %p)\n", This, ppv);
        *ppv = &This->IOleClientSite_iface;
    }else if(IsEqualGUID(&IID_IOleClientSite, riid)) {
        TRACE("(%p)->(IID_IOleClientSite %p)\n", This, ppv);
        *ppv = &This->IOleClientSite_iface;
    }else if(IsEqualGUID(&IID_IAdviseSink, riid)) {
        TRACE("(%p)->(IID_IAdviseSink %p)\n", This, ppv);
        *ppv = &This->IAdviseSinkEx_iface;
    }else if(IsEqualGUID(&IID_IAdviseSinkEx, riid)) {
        TRACE("(%p)->(IID_IAdviseSinkEx %p)\n", This, ppv);
        *ppv = &This->IAdviseSinkEx_iface;
    }else {
        WARN("Unsupported interface %s\n", debugstr_guid(riid));
        *ppv = NULL;
        return E_NOINTERFACE;
    }

    IOleClientSite_AddRef((IUnknown*)*ppv);
    return S_OK;
}

static ULONG WINAPI PHClientSite_AddRef(IOleClientSite *iface)
{
    PluginHost *This = impl_from_IOleClientSite(iface);
    LONG ref = InterlockedIncrement(&This->ref);

    TRACE("(%p) ref=%d\n", This, ref);

    return ref;
}

static ULONG WINAPI PHClientSite_Release(IOleClientSite *iface)
{
    PluginHost *This = impl_from_IOleClientSite(iface);
    LONG ref = InterlockedDecrement(&This->ref);

    TRACE("(%p) ref=%d\n", This, ref);

    if(!ref) {
        if(This->plugin_unk)
            IUnknown_Release(This->plugin_unk);
        heap_free(This);
    }

    return ref;
}

static HRESULT WINAPI PHClientSite_SaveObject(IOleClientSite *iface)
{
    PluginHost *This = impl_from_IOleClientSite(iface);
    FIXME("(%p)\n", This);
    return E_NOTIMPL;
}

static HRESULT WINAPI PHClientSite_GetMoniker(IOleClientSite *iface, DWORD dwAssign,
                                            DWORD dwWhichMoniker, IMoniker **ppmk)
{
    PluginHost *This = impl_from_IOleClientSite(iface);
    FIXME("(%p)->(%d %d %p)\n", This, dwAssign, dwWhichMoniker, ppmk);
    return E_NOTIMPL;
}

static HRESULT WINAPI PHClientSite_GetContainer(IOleClientSite *iface, IOleContainer **ppContainer)
{
    PluginHost *This = impl_from_IOleClientSite(iface);
    FIXME("(%p)->(%p)\n", This, ppContainer);
    return E_NOTIMPL;
}

static HRESULT WINAPI PHClientSite_ShowObject(IOleClientSite *iface)
{
    PluginHost *This = impl_from_IOleClientSite(iface);
    FIXME("(%p)\n", This);
    return E_NOTIMPL;
}

static HRESULT WINAPI PHClientSite_OnShowWindow(IOleClientSite *iface, BOOL fShow)
{
    PluginHost *This = impl_from_IOleClientSite(iface);
    FIXME("(%p)->(%x)\n", This, fShow);
    return E_NOTIMPL;
}

static HRESULT WINAPI PHClientSite_RequestNewObjectLayout(IOleClientSite *iface)
{
    PluginHost *This = impl_from_IOleClientSite(iface);
    FIXME("(%p)\n", This);
    return E_NOTIMPL;
}

static const IOleClientSiteVtbl OleClientSiteVtbl = {
    PHClientSite_QueryInterface,
    PHClientSite_AddRef,
    PHClientSite_Release,
    PHClientSite_SaveObject,
    PHClientSite_GetMoniker,
    PHClientSite_GetContainer,
    PHClientSite_ShowObject,
    PHClientSite_OnShowWindow,
    PHClientSite_RequestNewObjectLayout
};

static inline PluginHost *impl_from_IAdviseSinkEx(IAdviseSinkEx *iface)
{
    return CONTAINING_RECORD(iface, PluginHost, IAdviseSinkEx_iface);
}

static HRESULT WINAPI PHAdviseSinkEx_QueryInterface(IAdviseSinkEx *iface, REFIID riid, void **ppv)
{
    PluginHost *This = impl_from_IAdviseSinkEx(iface);
    return IOleClientSite_QueryInterface(&This->IOleClientSite_iface, riid, ppv);
}

static ULONG WINAPI PHAdviseSinkEx_AddRef(IAdviseSinkEx *iface)
{
    PluginHost *This = impl_from_IAdviseSinkEx(iface);
    return IOleClientSite_AddRef(&This->IOleClientSite_iface);
}

static ULONG WINAPI PHAdviseSinkEx_Release(IAdviseSinkEx *iface)
{
    PluginHost *This = impl_from_IAdviseSinkEx(iface);
    return IOleClientSite_Release(&This->IOleClientSite_iface);
}

static void WINAPI PHAdviseSinkEx_OnDataChange(IAdviseSinkEx *iface, FORMATETC *pFormatetc, STGMEDIUM *pStgMedium)
{
    PluginHost *This = impl_from_IAdviseSinkEx(iface);
    FIXME("(%p)->(%p %p)\n", This, pFormatetc, pStgMedium);
}

static void WINAPI PHAdviseSinkEx_OnViewChange(IAdviseSinkEx *iface, DWORD dwAspect, LONG lindex)
{
    PluginHost *This = impl_from_IAdviseSinkEx(iface);
    FIXME("(%p)->(%d %d)\n", This, dwAspect, lindex);
}

static void WINAPI PHAdviseSinkEx_OnRename(IAdviseSinkEx *iface, IMoniker *pmk)
{
    PluginHost *This = impl_from_IAdviseSinkEx(iface);
    FIXME("(%p)->(%p)\n", This, pmk);
}

static void WINAPI PHAdviseSinkEx_OnSave(IAdviseSinkEx *iface)
{
    PluginHost *This = impl_from_IAdviseSinkEx(iface);
    FIXME("(%p)\n", This);
}

static void WINAPI PHAdviseSinkEx_OnClose(IAdviseSinkEx *iface)
{
    PluginHost *This = impl_from_IAdviseSinkEx(iface);
    FIXME("(%p)\n", This);
}

static void WINAPI PHAdviseSinkEx_OnViewStatusChange(IAdviseSinkEx *iface, DWORD dwViewStatus)
{
    PluginHost *This = impl_from_IAdviseSinkEx(iface);
    FIXME("(%p)->(%d)\n", This, dwViewStatus);
}

static const IAdviseSinkExVtbl AdviseSinkExVtbl = {
    PHAdviseSinkEx_QueryInterface,
    PHAdviseSinkEx_AddRef,
    PHAdviseSinkEx_Release,
    PHAdviseSinkEx_OnDataChange,
    PHAdviseSinkEx_OnViewChange,
    PHAdviseSinkEx_OnRename,
    PHAdviseSinkEx_OnSave,
    PHAdviseSinkEx_OnClose,
    PHAdviseSinkEx_OnViewStatusChange
};

HRESULT create_plugin_host(IUnknown *unk, PluginHost **ret)
{
    PluginHost *host;

    host = heap_alloc_zero(sizeof(*host));
    if(!host)
        return E_OUTOFMEMORY;

    host->IOleClientSite_iface.lpVtbl = &OleClientSiteVtbl;
    host->IAdviseSinkEx_iface.lpVtbl  = &AdviseSinkExVtbl;

    host->ref = 1;

    IUnknown_AddRef(unk);
    host->plugin_unk = unk;

    *ret = host;
    return S_OK;
}