/*
# ==================================================================================
# Copyright (c) 2020 HCL Technologies Limited.
#
# Licensed 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.
# ==================================================================================
*/


/* Classes to handle E2 service model based on e2sm-Bouncer-v001.asn */
#include "e2sm_control.hpp"

 //initialize
 e2sm_control::e2sm_control(void){

	memset(&head_fmt1, 0, sizeof(E2SM_Bouncer_ControlHeader_Format1_t));

	memset(&msg_fmt1, 0, sizeof(E2SM_Bouncer_ControlMessage_Format1_t));



    control_head = 0;
    control_head = ( E2SM_Bouncer_ControlHeader_t *)calloc(1, sizeof( E2SM_Bouncer_ControlHeader_t));
    assert(control_head != 0);

    control_msg = 0;
    control_msg = (E2SM_Bouncer_ControlMessage_t*)calloc(1, sizeof(E2SM_Bouncer_ControlMessage_t));
    assert(control_msg !=0);

    errbuf_len = 128;
  };

 e2sm_control::~e2sm_control(void){

  mdclog_write(MDCLOG_DEBUG, "Freeing event trigger object memory");

  control_head->choice.controlHeader_Format1 = 0;

  control_msg->choice.controlMessage_Format1 = 0;

  ASN_STRUCT_FREE(asn_DEF_E2SM_Bouncer_ControlHeader, control_head);
  ASN_STRUCT_FREE(asn_DEF_E2SM_Bouncer_ControlMessage, control_msg);


};

bool e2sm_control::encode_control_header(unsigned char *buf, size_t *size, e2sm_control_helper &helper){

  ASN_STRUCT_RESET(asn_DEF_E2SM_Bouncer_ControlHeader, control_head);

  bool res;
  res = set_fields(control_head, helper);
  if (!res){

    return false;
  }

  int ret_constr = asn_check_constraints(&asn_DEF_E2SM_Bouncer_ControlHeader, control_head, errbuf, &errbuf_len);
  if(ret_constr){
    error_string.assign(&errbuf[0], errbuf_len);
    return false;
  }

  xer_fprint(stdout, &asn_DEF_E2SM_Bouncer_ControlHeader, control_head);

  asn_enc_rval_t retval = asn_encode_to_buffer(0, ATS_ALIGNED_BASIC_PER, &asn_DEF_E2SM_Bouncer_ControlHeader, control_head, buf, *size);

  if(retval.encoded == -1){
    error_string.assign(strerror(errno));
    return false;
  }
  else if (retval.encoded > *size){
    std::stringstream ss;
    ss  <<"Error encoding event trigger definition. Reason =  encoded pdu size " << retval.encoded << " exceeds buffer size " << *size << std::endl;
    error_string = ss.str();
    return false;
  }
  else{
    *size = retval.encoded;
  }

  return true;
}

bool e2sm_control::encode_control_message(unsigned char *buf, size_t *size, e2sm_control_helper &helper){

  bool res;
  res = set_fields(control_msg, helper);
  if (!res){
    return false;
  }


  int ret_constr = asn_check_constraints(&asn_DEF_E2SM_Bouncer_ControlMessage, control_msg, errbuf, &errbuf_len);
  if(ret_constr){
    error_string.assign(&errbuf[0], errbuf_len);
    return false;
  }

  xer_fprint(stdout, &asn_DEF_E2SM_Bouncer_ControlMessage, control_msg);

  asn_enc_rval_t retval = asn_encode_to_buffer(0, ATS_ALIGNED_BASIC_PER, &asn_DEF_E2SM_Bouncer_ControlMessage, control_msg, buf, *size);

  if(retval.encoded == -1){
    error_string.assign(strerror(errno));
    return false;
  }
  else if (retval.encoded > *size){
    std::stringstream ss;
    ss  <<"Error encoding action definition. Reason =  encoded pdu size " << retval.encoded << " exceeds buffer size " << *size << std::endl;
    error_string = ss.str();
    return false;
  }
  else{
    *size = retval.encoded;
  }

  return true;
}

bool e2sm_control::set_fields(E2SM_Bouncer_ControlHeader_t * ref_control_head, e2sm_control_helper & helper){

 if(ref_control_head == 0){
    error_string = "Invalid reference for Event Trigger Definition set fields";
    return false;
  }

  ref_control_head->present = E2SM_Bouncer_ControlHeader_PR_controlHeader_Format1;

  head_fmt1.controlHeaderParam = helper.header;

  ref_control_head->choice.controlHeader_Format1 = &head_fmt1;

  return true;
};

bool e2sm_control::set_fields(E2SM_Bouncer_ControlMessage_t * ref_control_msg, e2sm_control_helper & helper){

 if(ref_control_msg == 0){
    error_string = "Invalid reference for Event Action Definition set fields";
    return false;
  }
  ref_control_msg->present = E2SM_Bouncer_ControlMessage_PR_controlMessage_Format1;

  msg_fmt1.controlMsgParam.buf = helper.message;
  msg_fmt1.controlMsgParam.size = helper.message_len;


  ref_control_msg->choice.controlMessage_Format1 = &msg_fmt1;


  return true;
};

bool e2sm_control::get_fields(E2SM_Bouncer_ControlHeader_t * ref_indictaion_header, e2sm_control_helper & helper){

	if (ref_indictaion_header == 0){
	    error_string = "Invalid reference for Control Header get fields";
	    return false;
	  }

	helper.header = ref_indictaion_header->choice.controlHeader_Format1->controlHeaderParam;
	return true;
}

bool e2sm_control::get_fields(E2SM_Bouncer_ControlMessage_t * ref_control_message, e2sm_control_helper & helper){

	  if (ref_control_message == 0){
	  	    error_string = "Invalid reference for Control Message get fields";
	  	    return false;
	  	  }
	  helper.message = ref_control_message->choice.controlMessage_Format1->controlMsgParam.buf;
	  helper.message_len = ref_control_message->choice.controlMessage_Format1->controlMsgParam.size;

	  return true;
  }