#include "Identity_Server.h"
#include "Identity_i.h"
#include "tao/debug.h"
#include "ace/Get_Opt.h"
#include "ace/OS_NS_stdio.h"

Identity_Server::Identity_Server ()
  : group_factory_ior_ (0),
    random_objects_ (5),
    rr_objects_ (5)
{
}

int
Identity_Server::parse_args (int argc, ACE_TCHAR *argv[])
{
  ACE_Get_Opt get_opts (argc, argv, ACE_TEXT("di:a:o:"));
  int c;

  while ((c = get_opts ()) != -1)
    switch (c)
      {
      case 'd':  // debug flag.
        TAO_debug_level++;
        break;
      case 'i': // ior of the <Object_Group_Factory> object.
        this->group_factory_ior_ = get_opts.opt_arg ();
        break;
      case 'a': // number of objects to create/register with the random group.
        random_objects_ = ACE_OS::atoi (get_opts.opt_arg ());
        break;
      case 'o': // number of objects to create/register with round
                //robin group.
        rr_objects_ = ACE_OS::atoi (get_opts.opt_arg ());
        break;
      case '?':
      default:
        ACE_ERROR_RETURN ((LM_ERROR,
                           "usage:  %s"
                           " [-d]"
                           " [-i] <Object_Group_Factory_ior>"
                           " [-a] <number_of_objects_for_random_group>"
                           " [-o] <number_of_objects_for_rr_group>"
                           "\n",
                           argv [0]),
                          -1);
      }

  // Indicates successful parsing of command line.
  return 0;
}

int
Identity_Server::init (int argc,
                       ACE_TCHAR* argv[])
{
  int result;

  try
    {
      result = this->orb_manager_.init (argc,
                                        argv);
      if (result == -1)
        return result;

      CORBA::PolicyList policies (2);
      policies.length (2);

      // Lifespan policy
      policies[0] =
        this->orb_manager_.root_poa()->create_lifespan_policy (PortableServer::PERSISTENT);

      policies[1] =
        this->orb_manager_.root_poa()->create_implicit_activation_policy (PortableServer::IMPLICIT_ACTIVATION);

      this->persistent_POA_  =
        this->orb_manager_.root_poa()->create_POA ("persistent_server",
                                                   this->orb_manager_.poa_manager (),
                                                   policies);


      // Destroy policy objects
      for (CORBA::ULong i = 0;
           i < policies.length ();
           ++i)
        {
          policies[i]->destroy ();
        }


    }
  catch (const CORBA::Exception& ex)
    {
      ex._tao_print_exception ("Identity_Server::init");
      return -1;
    }

  return 0;
}

int
Identity_Server::register_groups ()
{
  // Contact the <Object_Group_Factory> to create 2
  // <Object_Group>s, one random and one rr.
  CORBA::ORB_var orb = orb_manager_.orb ();
  CORBA::Object_var obj =
    orb->string_to_object (this->group_factory_ior_);

  Load_Balancer::Object_Group_Factory_var factory =
    Load_Balancer::Object_Group_Factory::_narrow (obj.in ());

  if (CORBA::is_nil (factory.in ()))
    ACE_ERROR_RETURN ((LM_ERROR,
                       "Identity_Server::init: "
                       "problems using the factory ior\n"),
                      -1);


  // Unbind the previously registered random group.
  try
    {
      factory->unbind_random ("Random group");
    }
  catch (const CORBA::Exception&)
    {
      ACE_DEBUG ((LM_DEBUG,
                  "(%N | %l) <Unbind> harmless here\n"));
    }

  // Unbind the previously registered round robin group
  try
    {
      factory->unbind_round_robin ("Round Robin group");
    }
  catch (const CORBA::Exception&)
    {
      ACE_DEBUG ((LM_DEBUG,
                  "(%N | %l) <Unbind> harmless here\n"));
    }


  // We want to make two groups Random & Round Robin.
  Load_Balancer::Object_Group_var random_group =
    factory->make_random ("Random group");

  if (CORBA::is_nil (random_group.in ()))
    {
      ACE_ERROR ((LM_ERROR, "Got nil random group from load balancer\n"));
      return -1;
    }

  Load_Balancer::Object_Group_var rr_group =
    factory->make_round_robin ("Round Robin group");

  if (CORBA::is_nil (rr_group.in ()))
    {
      ACE_ERROR ((LM_ERROR, "Got nil round robin group from load balancer\n"));
      return -1;
    }

  // Create the requested number of <Identity> objects, and
  // register them with the random and round robin
  // <Object_Group>s.
  this->create_objects (random_objects_,
                        random_group.in ());


  this->create_objects (rr_objects_,
                        rr_group.in ());

  return 0;
}

void
Identity_Server::create_objects (size_t number_of_objects,
                                 Load_Balancer::Object_Group_ptr group)
{
  // Create the specified number of servants, and register each one
  // with the provided <Object_Group>.
  for (size_t i = 0; i < number_of_objects; ++i)
    {
      // Create an id for this servant.
      ACE_TCHAR id[BUFSIZ];
      ACE_OS::sprintf (id,
                       ACE_TEXT("Identity object ") ACE_SIZE_T_FORMAT_SPECIFIER,
                       i);

      // Create and activate a servant.
      Identity_i * identity_servant;
      ACE_NEW_THROW_EX (identity_servant,
                        Identity_i (ACE_TEXT_ALWAYS_CHAR(id), this->persistent_POA_.in ()),
                        CORBA::NO_MEMORY ());

      PortableServer::ServantBase_var s = identity_servant;
      this->orb_manager_.activate_poa_manager ();

      CORBA::Object_var obj = identity_servant->_this ();

      Load_Balancer::Member member;
      member.id = CORBA::string_dup (ACE_TEXT_ALWAYS_CHAR(id));
      member.obj = this->orb_manager_.orb ()->object_to_string (obj.in ());

      // Do an unbind and then bind
      try
        {
          group->unbind (ACE_TEXT_ALWAYS_CHAR(id));
        }
      catch (const CORBA::Exception&)
        {
          ACE_DEBUG ((LM_DEBUG,
                      "(%N | %l) Harmless here\n"));
        }

      // Bind the servant in the random <Object_Group>.
      group->bind (member);
    }
}

int
 Identity_Server::run ()
{
  int result;

  result = this->orb_manager_.run ();

  return result;
}

Identity_Server::~Identity_Server ()
{
}

int
ACE_TMAIN(int argc, ACE_TCHAR *argv[])
{
  int result = 0;
  Identity_Server server;

  if (server.init (argc, argv) == -1)
    return 1;

  // Check the non-ORB arguments.
  if (server.parse_args (argc, argv) == -1)
    return -1;

  try
    {
      result = server.register_groups ();

      if (result != 0)
        return 1;

      result = server.run ();
    }
  catch (const CORBA::Exception& ex)
    {
      ex._tao_print_exception ("Identity_Server");
      return 1;
    }

  if (result == -1)
    return 1;
  else
    return 0;
}