/*******************************************************************************
 (c) 2005-2014 Copyright, Real-Time Innovations, Inc.  All rights reserved.
 RTI grants Licensee a license to use, modify, compile, and create derivative
 works of the Software.  Licensee has the right to distribute object form only
 for use with RTI products.  The Software is provided "as is", with no warranty
 of any type, including any warranty for fitness for any purpose. RTI is under
 no obligation to maintain or support the Software.  RTI shall not be liable for
 any incidental or consequential damages arising out of the use or inability to
 use the software.
 ******************************************************************************/
/* numbers_subscriber.c

   A subscription example

   This file is derived from code automatically generated by the rtiddsgen 
   command:

   rtiddsgen -language C -example <arch> numbers.idl

   Example subscription of type numbers automatically generated by 
   'rtiddsgen'. To test them follow these steps:

   (1) Compile this file and the example publication.

   (2) Start the subscription on the same domain used for RTI Data Distribution
       Service  with the command
       objs/<arch>/numbers_subscriber <domain_id> <sample_count>

   (3) Start the publication on the same domain used for RTI Data Distribution
       Service with the command
       objs/<arch>/numbers_publisher <domain_id> <sample_count>

   (4) [Optional] Specify the list of discovery initial peers and 
       multicast receive addresses via an environment variable or a file 
       (in the current working directory) called NDDS_DISCOVERY_PEERS. 
       
   You can run any number of publishers and subscribers programs, and can 
   add and remove them dynamically from the domain.
              
                                   
   Example:
        
       To run the example application on domain <domain_id>:
                          
       On Unix: 
       
       objs/<arch>/numbers_publisher <domain_id> 
       objs/<arch>/numbers_subscriber <domain_id> 
                            
       On Windows:
       
       objs\<arch>\numbers_publisher <domain_id>  
       objs\<arch>\numbers_subscriber <domain_id>   
       
       
modification history
------------ -------       
*/

#include <stdio.h>
#include <stdlib.h>
#include "ndds/ndds_c.h"
#include "numbers.h"
#include "numbersSupport.h"

#include "numbers_common.c"

void numbersListener_on_requested_deadline_missed(
    void* listener_data,
    DDS_DataReader* reader,
    const struct DDS_RequestedDeadlineMissedStatus *status)
{
}

void numbersListener_on_requested_incompatible_qos(
    void* listener_data,
    DDS_DataReader* reader,
    const struct DDS_RequestedIncompatibleQosStatus *status)
{
}

void numbersListener_on_sample_rejected(
    void* listener_data,
    DDS_DataReader* reader,
    const struct DDS_SampleRejectedStatus *status)
{
}

void numbersListener_on_liveliness_changed(
    void* listener_data,
    DDS_DataReader* reader,
    const struct DDS_LivelinessChangedStatus *status)
{
}

void numbersListener_on_sample_lost(
    void* listener_data,
    DDS_DataReader* reader,
    const struct DDS_SampleLostStatus *status)
{
}

void numbersListener_on_subscription_matched(
    void* listener_data,
    DDS_DataReader* reader,
    const struct DDS_SubscriptionMatchedStatus *status)
{
}

void numbersListener_on_data_available(
    void* listener_data,
    DDS_DataReader* reader)
{
    numbersDataReader *numbers_reader = NULL;
    struct numbersSeq data_seq = DDS_SEQUENCE_INITIALIZER;
    struct DDS_SampleInfoSeq info_seq = DDS_SEQUENCE_INITIALIZER;
    DDS_ReturnCode_t retcode;
    int i;

    numbers_reader = numbersDataReader_narrow(reader);
    if (numbers_reader == NULL) {
        printf("DataReader narrow error\n");
        return;
    }

    retcode = numbersDataReader_take(
        numbers_reader,
        &data_seq, &info_seq, DDS_LENGTH_UNLIMITED,
        DDS_ANY_SAMPLE_STATE, DDS_ANY_VIEW_STATE, DDS_ANY_INSTANCE_STATE);
    if (retcode == DDS_RETCODE_NO_DATA) {
        return;
    } else if (retcode != DDS_RETCODE_OK) {
        printf("take error %d\n", retcode);
        return;
    }

    for (i = 0; i < numbersSeq_get_length(&data_seq); ++i) {
        if (DDS_SampleInfoSeq_get_reference(&info_seq, i)->valid_data) {
            numbersTypeSupport_print_data(
                numbersSeq_get_reference(&data_seq, i));
        }
    }

    retcode = numbersDataReader_return_loan(
        numbers_reader,
        &data_seq, &info_seq);
    if (retcode != DDS_RETCODE_OK) {
        printf("return loan error %d\n", retcode);
    }
}

/* Delete all entities */
static int subscriber_shutdown(
    DDS_DomainParticipant *participant)
{
    DDS_ReturnCode_t retcode;
    int status = 0;

    if (participant != NULL) {
        retcode = DDS_DomainParticipant_delete_contained_entities(participant);
        if (retcode != DDS_RETCODE_OK) {
            printf("delete_contained_entities error %d\n", retcode);
            status = -1;
        }

        retcode = DDS_DomainParticipantFactory_delete_participant(
            DDS_TheParticipantFactory, participant);
        if (retcode != DDS_RETCODE_OK) {
            printf("delete_participant error %d\n", retcode);
            status = -1;
        }
    }

    /* RTI Data Distribution Service provides finalize_instance() method on
       domain participant factory and finalize() method on type support for
       people who want to release memory used by the participant factory and
       type support singletons. Uncomment the following block of code for
       clean destruction of the singletons. */
/*
    numbersTypeSupport_finalize();

    retcode = DDS_DomainParticipantFactory_finalize_instance();
    if (retcode != DDS_RETCODE_OK) {
        printf("finalize_instance error %d\n", retcode);
        status = -1;
    }
*/

    return status;
}

static int subscriber_main(int domainId, int sample_count)
{
    DDS_DomainParticipant *participant = NULL;
    DDS_Subscriber *subscriber = NULL;
    DDS_Topic *topic = NULL;
    struct DDS_DataReaderListener reader_listener =
        DDS_DataReaderListener_INITIALIZER;
    DDS_DataReader *reader = NULL;
    DDS_ReturnCode_t retcode;
    const char *type_name = NULL;
    int count = 0;
    struct DDS_Duration_t poll_period = {4,0};

    /* To customize participant QoS, use 
       the configuration file USER_QOS_PROFILES.xml */
    participant = DDS_DomainParticipantFactory_create_participant(
        DDS_TheParticipantFactory, domainId, &DDS_PARTICIPANT_QOS_DEFAULT,
        NULL /* listener */, DDS_STATUS_MASK_NONE);
    if (participant == NULL) {
        printf("create_participant error\n");
        subscriber_shutdown(participant);
        return -1;
    }

    /* If you want to change the DomainParticipant's QoS programmatically  
     * rather than using the XML file, you will need to add the following lines 
     * to your code and comment out the create_participant call above.
     *
     * In this case, we set the transport settings in the XML by default, but
	 * in the numbers_common_create_participant call, we set up the transport
	 * properties either using the Properties QoS or with the transport 
	 * property objects.
     */
    /*participant = numbers_common_create_participant(domainId);
    if (participant == NULL) {
        subscriber_shutdown(participant);
        return -1; }
    */

    if (numbers_common_verify_qos(participant) != 0) {
        subscriber_shutdown(participant);
        return -1;
    }


    /* To customize subscriber QoS, use
       DDS_DomainParticipant_get_default_subscriber_qos() */
    subscriber = DDS_DomainParticipant_create_subscriber(
        participant, &DDS_SUBSCRIBER_QOS_DEFAULT, NULL /* listener */,
        DDS_STATUS_MASK_NONE);
    if (subscriber == NULL) {
        printf("create_subscriber error\n");
        subscriber_shutdown(participant);
        return -1;
    }

    /* Register type before creating topic */
    type_name = numbersTypeSupport_get_type_name();
    retcode = numbersTypeSupport_register_type(participant, type_name);
    if (retcode != DDS_RETCODE_OK) {
        printf("register_type error %d\n", retcode);
        subscriber_shutdown(participant);
        return -1;
    }

    /* To customize topic QoS, use
       DDS_DomainParticipant_get_default_topic_qos() */
    topic = DDS_DomainParticipant_create_topic(
        participant, "Example numbers",
        type_name, &DDS_TOPIC_QOS_DEFAULT, NULL /* listener */,
        DDS_STATUS_MASK_NONE);
    if (topic == NULL) {
        printf("create_topic error\n");
        subscriber_shutdown(participant);
        return -1;
    }

    /* Setup data reader listener */
    reader_listener.on_requested_deadline_missed  =
        numbersListener_on_requested_deadline_missed;
    reader_listener.on_requested_incompatible_qos =
        numbersListener_on_requested_incompatible_qos;
    reader_listener.on_sample_rejected =
        numbersListener_on_sample_rejected;
    reader_listener.on_liveliness_changed =
        numbersListener_on_liveliness_changed;
    reader_listener.on_sample_lost =
        numbersListener_on_sample_lost;
    reader_listener.on_subscription_matched =
        numbersListener_on_subscription_matched;
    reader_listener.on_data_available =
        numbersListener_on_data_available;

    /* To customize data reader QoS, use
       DDS_Subscriber_get_default_datareader_qos() */
    reader = DDS_Subscriber_create_datareader(
        subscriber, DDS_Topic_as_topicdescription(topic),
        &DDS_DATAREADER_QOS_DEFAULT, &reader_listener, DDS_STATUS_MASK_ALL);
    if (reader == NULL) {
        printf("create_datareader error\n");
        subscriber_shutdown(participant);
        return -1;
    }

    /* Main loop */
    for (count=0; (sample_count == 0) || (count < sample_count); ++count) {
        printf("numbers subscriber sleeping for %d sec...\n",
               poll_period.sec);
        NDDS_Utility_sleep(&poll_period);
    }

    /* Cleanup and delete delete all entities */ 
    return subscriber_shutdown(participant);
}

#if defined(RTI_WINCE)
int wmain(int argc, wchar_t** argv)
{
    int domainId = 0;
    int sample_count = 0; /* infinite loop */
    
    if (argc >= 2) {
        domainId = _wtoi(argv[1]);
    }
    if (argc >= 3) {
        sample_count = _wtoi(argv[2]);
    }

    /* Uncomment this to turn on additional logging
    NDDS_Config_Logger_set_verbosity_by_category(
        NDDS_Config_Logger_get_instance(),
        NDDS_CONFIG_LOG_CATEGORY_API, 
        NDDS_CONFIG_LOG_VERBOSITY_STATUS_ALL);
    */
    
    return subscriber_main(domainId, sample_count);
}
#elif !(defined(RTI_VXWORKS) && !defined(__RTP__)) && !defined(RTI_PSOS)
int main(int argc, char *argv[])
{
    int domainId = 0;
    int sample_count = 0; /* infinite loop */

    if (argc >= 2) {
        domainId = atoi(argv[1]);
    }
    if (argc >= 3) {
        sample_count = atoi(argv[2]);
    }

    /* Uncomment this to turn on additional logging
    NDDS_Config_Logger_set_verbosity_by_category(
        NDDS_Config_Logger_get_instance(),
        NDDS_CONFIG_LOG_CATEGORY_API, 
        NDDS_CONFIG_LOG_VERBOSITY_STATUS_ALL);
    */
    
    return subscriber_main(domainId, sample_count);
}
#endif
