// Copyright 2022 The Fuchsia 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 SRC_EMBEDDER_FLATLAND_VIEW_PROVIDER_H_
#define SRC_EMBEDDER_FLATLAND_VIEW_PROVIDER_H_

#include <fuchsia/ui/app/cpp/fidl.h>
#include <lib/syslog/global.h>
#include <lib/ui/scenic/cpp/view_identity.h>

#include "src/embedder/flatland_connection.h"
#include "src/embedder/flatland_ids.h"
#include "src/embedder/logging.h"

namespace embedder {

/// Implements ViewProvider by using Flatland to create a view.
class FlatlandViewProvider final : public fuchsia::ui::app::ViewProvider {
 public:
  FlatlandViewProvider(FlatlandConnection* flatland_connection)
      : flatland_connection_(flatland_connection) {}
  ~FlatlandViewProvider() override {}

  FlatlandViewProvider(const FlatlandViewProvider&) = delete;
  FlatlandViewProvider& operator=(const FlatlandViewProvider&) = delete;

  void CreateView(zx::eventpair token,
                  fidl::InterfaceRequest<fuchsia::sys::ServiceProvider> incoming_services,
                  fidl::InterfaceHandle<fuchsia::sys::ServiceProvider> outgoing_services) override {
    FX_LOG(ERROR, kLogTag, "ViewProvider::CreateView not implemented.");
  }

  void CreateViewWithViewRef(zx::eventpair view_token,
                             fuchsia::ui::views::ViewRefControl control_ref,
                             fuchsia::ui::views::ViewRef view_ref) override {
    FX_LOG(ERROR, kLogTag, "ViewProvider::CreateViewWithViewRef not implemented.");
  }

  void CreateView2(fuchsia::ui::app::CreateView2Args view_args) override {
    auto* flatland = flatland_connection_->flatland();

    flatland->CreateView2(std::move(*view_args.mutable_view_creation_token()),
                          scenic::NewViewIdentityOnCreation(), {} /* protocols */,
                          parent_viewport_watcher_.NewRequest());

    flatland->CreateTransform({kRootTransformId});
    flatland->SetRootTransform({kRootTransformId});
  }

  FlatlandConnection* flatland_connection_;
  fuchsia::ui::composition::ParentViewportWatcherPtr parent_viewport_watcher_;
};

}  // namespace embedder

#endif  // SRC_EMBEDDER_FLATLAND_VIEW_PROVIDER_H_