// Copyright 2019 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_CAMERA_BIN_FACTORY_FACTORY_SERVER_H_
#define SRC_CAMERA_BIN_FACTORY_FACTORY_SERVER_H_

#include <fuchsia/camera3/cpp/fidl.h>
#include <fuchsia/factory/camera/cpp/fidl.h>
#include <lib/async-loop/cpp/loop.h>
#include <lib/async-loop/default.h>
#include <lib/fidl/cpp/binding.h>

#include "src/camera/bin/factory/streamer.h"
#include "src/camera/bin/factory/web_ui.h"

namespace camera {

// The server-side implementation for the factory API. It maintains connections to scenic,
// camera3 and other services via other classes as needed.
//
// More specifically, it acts as a stream client and serves as the middle layer between calls
// from the factory host and several layers in the camera stack.
class FactoryServer : public fuchsia::factory::camera::Controller, WebUIControl {
 public:
  FactoryServer();
  ~FactoryServer();

  // Factory method that creates a FactoryServer and connects it to the Camera Manager and ISP
  // driver.
  //
  // Returns:
  //  A FactoryServer object which provides an interface to the factory API.
  static fpromise::result<std::unique_ptr<FactoryServer>, zx_status_t> Create(
      fuchsia::sysmem::AllocatorHandle allocator, fuchsia::camera3::DeviceWatcherHandle watcher,
      fit::closure stop_callback = nullptr);

  // Returns the class request handler.
  fidl::InterfaceRequestHandler<fuchsia::factory::camera::Controller> GetHandler();

  void Capture();

 private:
  // Requests a new camera-factory Controller.
  void OnNewRequest(fidl::InterfaceRequest<fuchsia::factory::camera::Controller> request);

  // |fuchsia.camera.factory.Controller|
  void IsIspBypassModeEnabled(bool enabled) override;
  void CaptureFrames(std::string dir_path, CaptureFramesCallback cb) override;
  void DisplayToScreen(uint32_t stream_index, DisplayToScreenCallback cb) override {}

  // |WebUIControl|
  void RequestCaptureData(uint32_t stream_index, CaptureResponse callback) override;

  async::Loop loop_;
  fit::closure stop_callback_;
  fidl::Binding<fuchsia::factory::camera::Controller> controller_binding_;
  std::unique_ptr<Streamer> streamer_;
  std::unique_ptr<WebUI> webui_;
  bool bypass_ = false;
};

}  // namespace camera

#endif  // SRC_CAMERA_BIN_FACTORY_FACTORY_SERVER_H_