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/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2016 Ole Christian Eidheim
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef ICN_WEB_SERVER_WEB_SERVER_H_
#define ICN_WEB_SERVER_WEB_SERVER_H_

#include "common.h"
#include "icn_request.h"
#include "icn_response.h"
#include "socket_request.h"
#include "socket_response.h"
#include "configuration.h"

typedef std::function<void(std::shared_ptr<icn_httpserver::Response>, std::shared_ptr<icn_httpserver::Request>)>
    ResourceCallback;

#define SERVER_NAME "/webserver"
#define PACKET_SIZE 1500
#define SEND_BUFFER_SIZE 30000

#define GET "GET"
#define POST "POST"
#define PUT "PUT"
#define DELETE "DELETE"
#define PATCH "PATCH"

namespace icn_httpserver {

class HttpServer {
 public:
  explicit HttpServer(unsigned short port,
                      std::string icn_name,
                      size_t num_threads,
                      long timeout_request,
                      long timeout_send_or_receive);

  explicit HttpServer(unsigned short port,
                      std::string icn_name,
                      size_t num_threads,
                      long timeout_request,
                      long timeout_send_or_receive,
                      boost::asio::io_service &ioService);

  void start();

  void stop();

  void accept();

  void send(std::shared_ptr<Response> response, SendCallback callback = nullptr) const;

  std::unordered_map<std::string, std::unordered_map<std::string, ResourceCallback> > resource;
  std::unordered_map<std::string, ResourceCallback> default_resource;

 private:
  void onIcnRequest(std::shared_ptr<libl4::http::HTTPServerPublisher>& publisher, const uint8_t* buffer, std::size_t size);

  void spawnThreads();

  void setIcnAcceptor();

  std::shared_ptr<boost::asio::deadline_timer> set_timeout_on_socket(std::shared_ptr<socket_type> socket, long seconds);

  void read_request_and_content(std::shared_ptr<socket_type> socket);

  bool parse_request(std::shared_ptr<Request> request, std::istream &stream) const;

  void find_resource(std::shared_ptr<socket_type> socket, std::shared_ptr<Request> request);

  void write_response(std::shared_ptr<socket_type> socket,
                      std::shared_ptr<Request> request,
                      ResourceCallback &resource_function);

  Configuration config_;

  std::vector<std::pair<std::string, std::vector<std::pair<boost::regex, ResourceCallback> > > > opt_resource_;

  std::shared_ptr<boost::asio::io_service> internal_io_service_;
  boost::asio::io_service &io_service_;
  boost::asio::ip::tcp::acceptor acceptor_;
  std::vector<std::thread> socket_threads_;

  // ICN parameters
  std::string icn_name_;
  std::shared_ptr<libl4::http::HTTPServerAcceptor> icn_acceptor_;
  std::unordered_map<int, std::shared_ptr<libl4::http::HTTPServerPublisher>> icn_publishers_;
  std::mutex thread_list_mtx_;

  long timeout_request_;
  long timeout_content_;

};

} // end namespace icn_httpserver

#endif //ICN_WEB_SERVER_WEB_SERVER_H_