// Copyright (c) 2011 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.

#ifndef WEBKIT_PLUGINS_PPAPI_PPB_TRANSPORT_IMPL_H_
#define WEBKIT_PLUGINS_PPAPI_PPB_TRANSPORT_IMPL_H_

#include <list>
#include <string>

#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "net/base/completion_callback.h"
#include "ppapi/c/dev/ppb_transport_dev.h"
#include "webkit/glue/p2p_transport.h"
#include "webkit/plugins/ppapi/callbacks.h"
#include "webkit/plugins/ppapi/resource.h"

namespace webkit {
namespace ppapi {

class PPB_Transport_Impl : public Resource,
                           public webkit_glue::P2PTransport::EventHandler {
 public:
  static const PPB_Transport_Dev* GetInterface();

  explicit PPB_Transport_Impl(PluginInstance* instance);
  virtual ~PPB_Transport_Impl();

  bool Init(const char* name, const char* proto);

  // Resource override.
  virtual PPB_Transport_Impl* AsPPB_Transport_Impl() OVERRIDE;

  bool IsWritable() const;
  int32_t Connect(PP_CompletionCallback cb);
  int32_t GetNextAddress(PP_Var* address, PP_CompletionCallback cb);
  int32_t ReceiveRemoteAddress(PP_Var address);
  int32_t Recv(void* data, uint32_t len, PP_CompletionCallback cb);
  int32_t Send(const void* data, uint32_t len, PP_CompletionCallback cb);
  int32_t Close();

  // webkit_glue::P2PTransport::EventHandler implementation.
  virtual void OnCandidateReady(const std::string& address) OVERRIDE;
  virtual void OnStateChange(webkit_glue::P2PTransport::State state) OVERRIDE;

 private:
  void OnRead(int result);
  void OnWritten(int result);

  std::string name_;
  std::string proto_;
  bool started_;
  scoped_ptr<webkit_glue::P2PTransport> p2p_transport_;
  bool writable_;
  std::list<std::string> local_candidates_;

  scoped_refptr<TrackedCompletionCallback> connect_callback_;
  scoped_refptr<TrackedCompletionCallback> next_address_callback_;

  scoped_refptr<TrackedCompletionCallback> recv_callback_;
  scoped_refptr<TrackedCompletionCallback> send_callback_;

  net::CompletionCallbackImpl<PPB_Transport_Impl> channel_write_callback_;
  net::CompletionCallbackImpl<PPB_Transport_Impl> channel_read_callback_;

  DISALLOW_COPY_AND_ASSIGN(PPB_Transport_Impl);
};

}  // namespace ppapi
}  // namespace webkit

#endif  // WEBKIT_PLUGINS_PPAPI_PPB_TRANSPORT_IMPL_H_