/*
==================================================================================

        Copyright (c) 2018-2019 AT&T Intellectual Property.

   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.
==================================================================================
 */


#include "xapp_rmr.hpp"

XappRmr::XappRmr(std::string port, int rmrattempts){

	_proto_port = port;
	_nattempts = rmrattempts;
	_xapp_rmr_ctx = NULL;
	_xapp_received_buff = NULL;
	_xapp_send_buff =NULL;
	_rmr_is_ready = false;
	_listen = false;

};

XappRmr::~XappRmr(void){

	// free memory
	if(_xapp_received_buff)
		rmr_free_msg(_xapp_received_buff);

	if(_xapp_send_buff)
		rmr_free_msg(_xapp_send_buff);

	if (_xapp_rmr_ctx){
		rmr_close(_xapp_rmr_ctx);
	}
};

//Get RMR Context.
void XappRmr::xapp_rmr_init(){

	// Initialize the RMR context
	_xapp_rmr_ctx = rmr_init(const_cast<char*>(_proto_port.c_str()), RMR_MAX_RCV_BYTES, RMRFL_NONE);

	if ( _xapp_rmr_ctx == NULL){
		mdclog_write(MDCLOG_ERR,"Error Initializing RMR, file= %s, line=%d",__FILE__,__LINE__);
	}
	while( ! rmr_ready(_xapp_rmr_ctx) ) {
		mdclog_write(MDCLOG_INFO,">>> waiting for RMR, file= %s, line=%d",__FILE__,__LINE__);
		sleep(1);
	}
	_rmr_is_ready = true;
	mdclog_write(MDCLOG_INFO,"RMR Context is Ready, file= %s, line=%d",__FILE__,__LINE__);

	return;

}
//RMR Returning to the sender.
bool XappRmr::xapp_rmr_rts()
{
	mdclog_write(MDCLOG_INFO,"RMR Return to sender, file= %s, line=%d",__FILE__,__LINE__);
	if ( _xapp_rmr_ctx == NULL){
			mdclog_write(MDCLOG_ERR,"Error Initializing RMR, file= %s, line=%d",__FILE__,__LINE__);
	}
	while( ! rmr_ready(_xapp_rmr_ctx) ) {
			mdclog_write(MDCLOG_INFO,">>> waiting for RMR, file= %s, line=%d",__FILE__,__LINE__);
			sleep(1);
	}
	rmr_rts_msg(_xapp_rmr_ctx, _xapp_received_buff );
	sleep(1);
	return true;
}

//RMR Send with payload and header.
bool XappRmr::xapp_rmr_send(xapp_rmr_header *hdr, void *payload){

	int rmr_attempts = _nattempts;

	if( _xapp_send_buff == NULL ) {
		_xapp_send_buff = rmr_alloc_msg(_xapp_rmr_ctx, RMR_DEF_SIZE);
	}
	_xapp_send_buff->mtype  = hdr->message_type;
	memcpy(_xapp_send_buff->payload, payload, hdr->payload_length);
	_xapp_send_buff->len = hdr->payload_length;

	if(!_rmr_is_ready) {
		mdclog_write(MDCLOG_ERR,"RMR Context is Not Ready in SENDER, file= %s, line=%d",__FILE__,__LINE__);
		return false;
	}

	while(rmr_attempts > 0){
		_xapp_send_buff = rmr_send_msg(_xapp_rmr_ctx,_xapp_send_buff);

		if(!_xapp_send_buff) {
			mdclog_write(MDCLOG_ERR,"Error In Sending Message , file= %s, line=%d, attempt=%d",__FILE__,__LINE__,rmr_attempts);
			rmr_attempts--;
		}
		else if (_xapp_send_buff->state == RMR_OK){
			mdclog_write(MDCLOG_INFO,"Message Sent: RMR State = RMR_OK");
			rmr_attempts = 0;
			_xapp_send_buff = NULL;
			return true;
		}
		else
		{
			mdclog_write(MDCLOG_INFO,"Need to retry RMR: state=%d, attempt=%d, file=%s, line=%d",_xapp_send_buff->state, rmr_attempts,__FILE__,__LINE__);
			rmr_attempts--;
		}
		sleep(1);
	}
	return false;
}

//----------------------------------------
// Some get/set methods
//---------------------------------------
bool XappRmr::get_listen(void){
  return _listen;
}


void XappRmr::set_listen(bool listen){
  _listen = listen;
}

int XappRmr::get_is_ready(void){
  return _rmr_is_ready;
}

bool XappRmr::get_isRunning(void){
  return _listen;
}


void * XappRmr::get_rmr_context(void){
  return _xapp_rmr_ctx;
}


void init_logger(const char  *AppName, mdclog_severity_t log_level)
{
    mdclog_attr_t *attr;
    mdclog_attr_init(&attr);
    mdclog_attr_set_ident(attr, AppName);
    mdclog_init(attr);
    mdclog_level_set(log_level);
    mdclog_attr_destroy(attr);
}