// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASOURCE_MEDIA_SOURCE_HANDLE_IMPL_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASOURCE_MEDIA_SOURCE_HANDLE_IMPL_H_

#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/core/html/media/media_source_attachment.h"
#include "third_party/blink/renderer/core/html/media/media_source_handle.h"
#include "third_party/blink/renderer/modules/mediasource/handle_attachment_provider.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"

namespace blink {

class MediaSourceHandleImpl final : public ScriptWrappable,
                                    public MediaSourceHandle {
  DEFINE_WRAPPERTYPEINFO();

 public:
  explicit MediaSourceHandleImpl(
      scoped_refptr<HandleAttachmentProvider> attachment_provider,
      String internal_blob_url);
  ~MediaSourceHandleImpl() override;

  scoped_refptr<HandleAttachmentProvider> TakeAttachmentProvider();

  scoped_refptr<MediaSourceAttachment> TakeAttachment() override;
  String GetInternalBlobURL() override;

  // Occurs during serialization, and prevents further serialization success.
  void mark_serialized();

  // Occurs during transfer finalization, and prevents further transfer attempt.
  // Note, this is needed because an app may transfer without serialization,
  // e.g. postMessage(null, [handle]), and this must prevent successful transfer
  // again of the same handle instance, even though the way the message was
  // posted prevents successful serialization and deserialization of the handle.
  // This also prevents successful use of the handle instance for attachment.
  void mark_detached();
  bool is_detached() const { return detached_; }

  void Trace(Visitor*) const override;

 private:
  scoped_refptr<HandleAttachmentProvider> attachment_provider_;
  String internal_blob_url_;
  bool detached_ = false;
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASOURCE_MEDIA_SOURCE_HANDLE_IMPL_H_