// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ppapi/proxy/ext_crx_file_system_private_resource.h"

#include "base/bind.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/proxy/resource_message_params.h"
#include "ppapi/shared_impl/host_resource.h"
#include "ppapi/shared_impl/tracked_callback.h"
#include "ppapi/thunk/enter.h"

namespace ppapi {
namespace proxy {

ExtCrxFileSystemPrivateResource::ExtCrxFileSystemPrivateResource(
    Connection connection, PP_Instance instance)
    : PluginResource(connection, instance), called_open_(false) {
  SendCreate(BROWSER, PpapiHostMsg_Ext_CrxFileSystem_Create());
}

ExtCrxFileSystemPrivateResource::~ExtCrxFileSystemPrivateResource() {
}

thunk::PPB_Ext_CrxFileSystem_Private_API*
ExtCrxFileSystemPrivateResource::AsPPB_Ext_CrxFileSystem_Private_API() {
  return this;
}

int32_t ExtCrxFileSystemPrivateResource::Open(
    PP_Instance /* unused */,
    PP_Resource* file_system_resource,
    scoped_refptr<TrackedCallback> callback) {
  if (called_open_)
    return PP_ERROR_FAILED;
  called_open_ = true;

  if (!file_system_resource)
    return PP_ERROR_BADARGUMENT;

  Call<PpapiPluginMsg_Ext_CrxFileSystem_BrowserOpenReply>(BROWSER,
      PpapiHostMsg_Ext_CrxFileSystem_BrowserOpen(),
      base::Bind(&ExtCrxFileSystemPrivateResource::OnBrowserOpenComplete, this,
                 file_system_resource,
                 callback));
  return PP_OK_COMPLETIONPENDING;
}

void ExtCrxFileSystemPrivateResource::OnBrowserOpenComplete(
    PP_Resource* file_system_resource,
    scoped_refptr<TrackedCallback> callback,
    const ResourceMessageReplyParams& params,
    const std::string& fsid) {
  if (!TrackedCallback::IsPending(callback))
    return;

  if (params.result() != PP_OK) {
    callback->Run(params.result());
    return;
  }

  thunk::EnterResourceCreationNoLock enter(pp_instance());
  if (enter.failed()) {
    callback->Run(enter.retval());
    return;
  }

  *file_system_resource = enter.functions()->CreateIsolatedFileSystem(
      pp_instance(), fsid.c_str());
  if (*file_system_resource != 0) {
    callback->Run(PP_OK);
  } else {
    callback->Run(PP_ERROR_FAILED);
  }
}

}  // namespace proxy
}  // namespace ppapi