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// Copyright 2015 The Weave 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 <weave/device.h>
#include <weave/error.h>

#include <base/bind.h>

#include "examples/provider/avahi_client.h"
#include "examples/provider/bluez_client.h"
#include "examples/provider/curl_http_client.h"
#include "examples/provider/event_http_server.h"
#include "examples/provider/event_network.h"
#include "examples/provider/event_task_runner.h"
#include "examples/provider/file_config_store.h"
#include "examples/provider/wifi_manager.h"

class Daemon {
 public:
  struct Options {
    bool force_bootstrapping_{false};
    bool disable_security_{false};
    bool disable_privet_{false};
    std::string registration_ticket_;
    std::string model_id_{"AAAAA"};

    static void ShowUsage(const std::string& name) {
      LOG(ERROR) << "\nUsage: " << name << " <option(s)>"
                 << "\nOptions:\n"
                 << "\t-h,--help                    Show this help message\n"
                 << "\t--v=LEVEL                    Logging level\n"
                 << "\t-b,--bootstrapping           Force WiFi bootstrapping\n"
                 << "\t-d,--disable_security        Disable privet security\n"
                 << "\t--registration_ticket=TICKET Register device with the "
                    "given ticket\n"
                 << "\t--disable_privet             Disable local privet\n";
    }

    bool Parse(int argc, char** argv) {
      for (int i = 1; i < argc; ++i) {
        std::string arg = argv[i];
        if (arg == "-h" || arg == "--help") {
          return false;
        } else if (arg == "-b" || arg == "--bootstrapping") {
          force_bootstrapping_ = true;
        } else if (arg == "-d" || arg == "--disable_security") {
          disable_security_ = true;
        } else if (arg == "--disable_privet") {
          disable_privet_ = true;
        } else if (arg.find("--registration_ticket") != std::string::npos) {
          auto pos = arg.find("=");
          if (pos == std::string::npos) {
            return false;
          }
          registration_ticket_ = arg.substr(pos + 1);
        } else if (arg.find("--v") != std::string::npos) {
          auto pos = arg.find("=");
          if (pos == std::string::npos) {
            return false;
          }
          logging::SetMinLogLevel(-std::stoi(arg.substr(pos + 1)));
        } else {
          return false;
        }
      }
      return true;
    }
  };

  Daemon(const Options& opts)
      : task_runner_{new weave::examples::EventTaskRunner},
        config_store_{
            new weave::examples::FileConfigStore(opts.disable_security_,
                                                 opts.model_id_,
                                                 task_runner_.get())},
        http_client_{new weave::examples::CurlHttpClient(task_runner_.get())},
        network_{new weave::examples::EventNetworkImpl(task_runner_.get())},
        bluetooth_{new weave::examples::BluetoothImpl} {
    if (!opts.disable_privet_) {
      network_->SetSimulateOffline(opts.force_bootstrapping_);

      dns_sd_.reset(new weave::examples::AvahiClient);
      http_server_.reset(
          new weave::examples::HttpServerImpl{task_runner_.get()});
      if (weave::examples::WifiImpl::HasWifiCapability())
        wifi_.reset(
            new weave::examples::WifiImpl{task_runner_.get(), network_.get()});
    }
    device_ = weave::Device::Create(config_store_.get(), task_runner_.get(),
                                    http_client_.get(), network_.get(),
                                    dns_sd_.get(), http_server_.get(),
                                    wifi_.get(), bluetooth_.get());

    if (!opts.registration_ticket_.empty()) {
      device_->Register(opts.registration_ticket_,
                        base::Bind(&OnRegisterDeviceDone, device_.get()));
    }
  }

  void Run() { task_runner_->Run(); }

  weave::Device* GetDevice() const { return device_.get(); }

  weave::examples::EventTaskRunner* GetTaskRunner() const {
    return task_runner_.get();
  }

 private:
  static void OnRegisterDeviceDone(weave::Device* device,
                                   weave::ErrorPtr error) {
    if (error)
      LOG(ERROR) << "Fail to register device: " << error->GetMessage();
    else
      LOG(INFO) << "Device registered: " << device->GetSettings().cloud_id;
  }

  std::unique_ptr<weave::examples::EventTaskRunner> task_runner_;
  std::unique_ptr<weave::examples::FileConfigStore> config_store_;
  std::unique_ptr<weave::examples::CurlHttpClient> http_client_;
  std::unique_ptr<weave::examples::EventNetworkImpl> network_;
  std::unique_ptr<weave::examples::BluetoothImpl> bluetooth_;
  std::unique_ptr<weave::examples::AvahiClient> dns_sd_;
  std::unique_ptr<weave::examples::HttpServerImpl> http_server_;
  std::unique_ptr<weave::examples::WifiImpl> wifi_;
  std::unique_ptr<weave::Device> device_;
};