/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

#include <glib-object.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>

#include <thrift/c_glib/thrift.h>
#include <thrift/c_glib/processor/thrift_multiplexed_processor.h>
#include <thrift/c_glib/protocol/thrift_binary_protocol_factory.h>
#include <thrift/c_glib/protocol/thrift_compact_protocol_factory.h>
#include <thrift/c_glib/server/thrift_server.h>
#include <thrift/c_glib/server/thrift_simple_server.h>
#include <thrift/c_glib/transport/thrift_buffered_transport.h>
#include <thrift/c_glib/transport/thrift_buffered_transport_factory.h>
#include <thrift/c_glib/transport/thrift_framed_transport.h>
#include <thrift/c_glib/transport/thrift_framed_transport_factory.h>
#include <thrift/c_glib/transport/thrift_server_socket.h>
#include <thrift/c_glib/transport/thrift_server_transport.h>
#include <thrift/c_glib/transport/thrift_transport.h>
#include <thrift/c_glib/transport/thrift_transport_factory.h>

#include "../gen-c_glib/t_test_thrift_test.h"
#include "../gen-c_glib/t_test_second_service.h"

#include "thrift_test_handler.h"
#include "thrift_second_service_handler.h"

/* Our server object, declared globally so it is accessible within the SIGINT
   signal handler */
ThriftServer *server = NULL;

/* A flag that indicates whether the server was interrupted with SIGINT
   (i.e. Ctrl-C) so we can tell whether its termination was abnormal */
gboolean sigint_received = FALSE;

/* Handle SIGINT ("Ctrl-C") signals by gracefully stopping the server */
static void
sigint_handler (int signal_number)
{
  THRIFT_UNUSED_VAR (signal_number);

  /* Take note we were called */
  sigint_received = TRUE;

  /* Shut down the server gracefully */
  if (server != NULL)
    thrift_server_stop (server);
}

int
main (int argc, char **argv)
{
  static gint   port = 9090;
  static gchar *server_type_option = NULL;
  static gchar *transport_option = NULL;
  static gchar *protocol_option = NULL;
  static gint   string_limit = 0;
  static gint   container_limit = 0;

  static
    GOptionEntry option_entries[] = {
    { "port",            0, 0, G_OPTION_ARG_INT,      &port,
      "Port number to connect (=9090)", NULL },
    { "server-type",     0, 0, G_OPTION_ARG_STRING,   &server_type_option,
      "Type of server: simple (=simple)", NULL },
    { "transport",       0, 0, G_OPTION_ARG_STRING,   &transport_option,
      "Transport: buffered, framed (=buffered)", NULL },
    { "protocol",        0, 0, G_OPTION_ARG_STRING,   &protocol_option,
      "Protocol: binary, compact (=binary)", NULL },
    { "string-limit",    0, 0, G_OPTION_ARG_INT,      &string_limit,
      "Max string length (=none)", NULL },
    { "container-limit", 0, 0, G_OPTION_ARG_INT,      &container_limit,
      "Max container length (=none)", NULL },
    { NULL }
  };

  gchar *server_name            = "simple";
  gchar *transport_name         = "buffered";
  GType  transport_factory_type = THRIFT_TYPE_BUFFERED_TRANSPORT_FACTORY;
  gchar *protocol_name          = "binary";
  GType  protocol_factory_type  = THRIFT_TYPE_BINARY_PROTOCOL_FACTORY;

  TTestThriftTestHandler *handler;
  TTestThriftTestHandler *handler_second_service = NULL;
  ThriftProcessor        *processor;
  ThriftProcessor        *processor_test = NULL;
  ThriftProcessor        *processor_second_service = NULL;
  ThriftServerTransport  *server_transport;
  ThriftTransportFactory *transport_factory;
  ThriftProtocolFactory  *protocol_factory;

  struct sigaction sigint_action;

  GOptionContext *option_context;
  gboolean        options_valid = TRUE;

  GError *error = NULL;

#if (!GLIB_CHECK_VERSION (2, 36, 0))
  g_type_init ();
#endif

  /* Configure and parse our command-line options */
  option_context = g_option_context_new (NULL);
  g_option_context_add_main_entries (option_context,
                                     option_entries,
                                     NULL);
  if (g_option_context_parse (option_context,
                              &argc,
                              &argv,
                              &error) == FALSE) {
    fprintf (stderr, "%s\n", error->message);
    return 255;
  }
  g_option_context_free (option_context);

  /* Validate the parsed options */
  if (server_type_option != NULL &&
      strncmp (server_type_option, "simple", 7) != 0) {
    fprintf (stderr, "Unknown server type %s\n", protocol_option);
    options_valid = FALSE;
  }

  if (protocol_option != NULL) {
    if (strncmp (protocol_option, "compact", 8) == 0) {
      protocol_factory_type = THRIFT_TYPE_COMPACT_PROTOCOL_FACTORY;
      protocol_name = "compact";
    }
    else if (strncmp (protocol_option, "multi", 6) == 0) {
	protocol_name = "binary:multi";
    }
    else if (strncmp (protocol_option, "multic", 7) == 0) {
	protocol_factory_type = THRIFT_TYPE_COMPACT_PROTOCOL_FACTORY;
	protocol_name = "compact:multic";
    }
    else if (strncmp (protocol_option, "binary", 7) != 0) {
      fprintf (stderr, "Unknown protocol type %s\n", protocol_option);
      options_valid = FALSE;
    }
  }

  if (transport_option != NULL) {
    if (strncmp (transport_option, "framed", 7) == 0) {
      transport_factory_type = THRIFT_TYPE_FRAMED_TRANSPORT_FACTORY;
      transport_name = "framed";
    }
    else if (strncmp (transport_option, "buffered", 9) != 0) {
      fprintf (stderr, "Unknown transport type %s\n", transport_option);
      options_valid = FALSE;
    }
  }

  if (!options_valid)
    return 254;

  /* Establish all our connection objects */
  handler           = g_object_new (TYPE_THRIFT_TEST_HANDLER,
                                    NULL);


  if(strstr(protocol_name, ":multi")){
      /* When a multiplexed processor is involved the handler is not
         registered as usual. We create the processor and the real
         processor is registered. Multiple processors can be registered
         at once. This is why we don't have a constructor property */
      processor = g_object_new (THRIFT_TYPE_MULTIPLEXED_PROCESSOR,
					 NULL);

      handler_second_service = g_object_new (TYPE_SECOND_SERVICE_HANDLER,
     	                                    NULL);

      processor_test = g_object_new (T_TEST_TYPE_THRIFT_TEST_PROCESSOR,
				    "handler", handler,
				    NULL);
      processor_second_service =   g_object_new (T_TEST_TYPE_SECOND_SERVICE_PROCESSOR,
				    "handler", handler_second_service,
				    NULL);

      /* We register a test processor with Multiplexed name ThriftTest */
      if(!thrift_multiplexed_processor_register_processor(processor,
						      "ThriftTest", processor_test,
						      &error)){
	    g_message ("thrift_server_serve: %s",
	               error != NULL ? error->message : "(null)");
	    g_clear_error (&error);
      }
      /* We register a second test processor with Multiplexed name SecondService
       * we are responsible of freeing the processor when it's not used anymore */
      if(!thrift_multiplexed_processor_register_processor(processor,
						      "SecondService", processor_second_service,
						      &error)){
	    g_message ("thrift_server_serve: %s",
	               error != NULL ? error->message : "(null)");
	    g_clear_error (&error);
      }

  }else{
      processor = g_object_new (T_TEST_TYPE_THRIFT_TEST_PROCESSOR,
                                        "handler", handler,
                                        NULL);
  }
  server_transport  = g_object_new (THRIFT_TYPE_SERVER_SOCKET,
                                    "port", port,
                                    NULL);
  transport_factory = g_object_new (transport_factory_type,
                                    NULL);

  if (strstr (protocol_name, "compact") != NULL) {
    protocol_factory  = g_object_new (protocol_factory_type,
                                      "string_limit", string_limit,
                                      "container_limit", container_limit,
                                      NULL);
  } else {
    protocol_factory  = g_object_new (protocol_factory_type,
                                      NULL);
  }

  server = g_object_new (THRIFT_TYPE_SIMPLE_SERVER,
                         "processor",                processor,
                         "server_transport",         server_transport,
                         "input_transport_factory",  transport_factory,
                         "output_transport_factory", transport_factory,
                         "input_protocol_factory",   protocol_factory,
                         "output_protocol_factory",  protocol_factory,
                         NULL);

  /* Install our SIGINT handler, which handles Ctrl-C being pressed by stopping
     the server gracefully */
  memset (&sigint_action, 0, sizeof (sigint_action));
  sigint_action.sa_handler = sigint_handler;
  sigint_action.sa_flags = SA_RESETHAND;
  sigaction (SIGINT, &sigint_action, NULL);

  printf ("Starting \"%s\" server (%s/%s) listen on: %d\n",
          server_name,
          transport_name,
          protocol_name,
          port);
  fflush (stdout);

  /* Serve clients until SIGINT is received (Ctrl-C is pressed) */
  thrift_server_serve (server, &error);

  /* If the server stopped for any reason other than being interrupted by the
     user, report the error */
  if (!sigint_received) {
    g_message ("thrift_server_serve: %s",
               error != NULL ? error->message : "(null)");
    g_clear_error (&error);
  }

  puts ("done.");

  g_object_unref (server);
  g_object_unref (protocol_factory);
  g_object_unref (transport_factory);
  g_object_unref (server_transport);
  g_object_unref (processor);
  g_object_unref (handler);
  if(handler_second_service){
      g_object_unref (handler_second_service);
  }
  if(processor_test){
      g_object_unref (processor_test);
  }
  if(processor_second_service){
      g_object_unref (processor_second_service);
  }

  return 0;
}