/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.0  (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.openairinterface.org/?page_id=698
 *
 * 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.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */ 

/*! \file flexran_agent_pdcp.c
 * \brief FlexRAN agent Control Module PDCP 
 * \author shahab SHARIAT BAGHERI
 * \date 2017
 * \version 0.1
 */

#include "flexran_agent_pdcp.h"


/*Trigger boolean for PDCP measurement*/
bool triggered_pdcp = false;
/*Flags showing if a pdcp agent has already been registered*/
unsigned int pdcp_agent_registered[NUM_MAX_ENB];

/*Array containing the Agent-PDCP interfaces*/
AGENT_PDCP_xface *agent_pdcp_xface[NUM_MAX_ENB];

// NUMBER_OF_UE_MAX

void flexran_agent_pdcp_aggregate_stats(const mid_t mod_id,
					const mid_t ue_id,
					Protocol__FlexPdcpStats *pdcp_aggr_stats){

  int lcid=0;
  /* only calculate the DRBs */ 
  //LOG_I(FLEXRAN_AGENT, "enb %d ue %d \n", mod_id, ue_id);
  
  for (lcid=NUM_MAX_SRB ; lcid < NUM_MAX_SRB + NUM_MAX_DRB; lcid++){
    
    pdcp_aggr_stats->pkt_tx += flexran_get_pdcp_tx(mod_id,ue_id,lcid);
    pdcp_aggr_stats->pkt_tx_bytes += flexran_get_pdcp_tx_bytes(mod_id,ue_id,lcid);
    pdcp_aggr_stats->pkt_tx_rate_s += flexran_get_pdcp_tx_rate_s(mod_id,ue_id,lcid);
    pdcp_aggr_stats->pkt_tx_throughput_s += flexran_get_pdcp_tx_throughput_s(mod_id,ue_id,lcid);
    pdcp_aggr_stats->pkt_tx_aiat += flexran_get_pdcp_tx_aiat(mod_id,ue_id,lcid);
    pdcp_aggr_stats->pkt_tx_aiat_s += flexran_get_pdcp_tx_aiat_s(mod_id,ue_id,lcid);
    
      
    pdcp_aggr_stats->pkt_rx += flexran_get_pdcp_rx(mod_id,ue_id,lcid);
    pdcp_aggr_stats->pkt_rx_bytes += flexran_get_pdcp_rx_bytes(mod_id,ue_id,lcid);
    pdcp_aggr_stats->pkt_rx_rate_s += flexran_get_pdcp_rx_rate_s(mod_id,ue_id,lcid);
    pdcp_aggr_stats->pkt_rx_goodput_s += flexran_get_pdcp_rx_goodput_s(mod_id,ue_id,lcid);
    pdcp_aggr_stats->pkt_rx_aiat += flexran_get_pdcp_rx_aiat(mod_id,ue_id,lcid);
    pdcp_aggr_stats->pkt_rx_aiat_s += flexran_get_pdcp_rx_aiat_s(mod_id,ue_id,lcid);
    pdcp_aggr_stats->pkt_rx_oo += flexran_get_pdcp_rx_oo(mod_id,ue_id,lcid);
    
  }
  
}


int flexran_agent_pdcp_stats_reply(mid_t mod_id,       
				   const report_config_t *report_config,
				   Protocol__FlexUeStatsReport **ue_report,
				   Protocol__FlexCellStatsReport **cell_report) {
  
  
  // Protocol__FlexHeader *header;
  int i;
  // int cc_id = 0;
 
  
  /* Allocate memory for list of UE reports */
  if (report_config->nr_ue > 0) {
    
    for (i = 0; i < report_config->nr_ue; i++) {

      /* Check flag for creation of buffer status report */
      if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__FLEX_UE_STATS_TYPE__FLUST_PDCP_STATS) {
	
	Protocol__FlexPdcpStats *pdcp_aggr_stats;
	pdcp_aggr_stats = malloc(sizeof(Protocol__FlexPdcpStats));
	if (pdcp_aggr_stats == NULL)
	  goto error;
	protocol__flex_pdcp_stats__init(pdcp_aggr_stats);
	
	flexran_agent_pdcp_aggregate_stats(mod_id, i, pdcp_aggr_stats);

	pdcp_aggr_stats->has_pkt_tx=1;
	pdcp_aggr_stats->has_pkt_tx_bytes =1;
	pdcp_aggr_stats->has_pkt_tx_rate_s=1; 
	pdcp_aggr_stats->has_pkt_tx_throughput_s =1;
	pdcp_aggr_stats->has_pkt_tx_aiat =1; 
	pdcp_aggr_stats->has_pkt_tx_aiat_s =1;

	pdcp_aggr_stats->pkt_tx_sn = flexran_get_pdcp_tx_sn(mod_id, i, DEFAULT_DRB);
	pdcp_aggr_stats->has_pkt_tx_sn =1;
	
	pdcp_aggr_stats->has_pkt_rx =1;
	pdcp_aggr_stats->has_pkt_rx_bytes =1; 
	pdcp_aggr_stats->has_pkt_rx_rate_s =1;
	pdcp_aggr_stats->has_pkt_rx_goodput_s =1;
	pdcp_aggr_stats->has_pkt_rx_aiat =1;
	pdcp_aggr_stats->has_pkt_rx_aiat_s =1;
	pdcp_aggr_stats->has_pkt_rx_oo =1;

	pdcp_aggr_stats->pkt_rx_sn = flexran_get_pdcp_rx_sn(mod_id, i, DEFAULT_DRB);
	pdcp_aggr_stats->has_pkt_rx_sn =1;

	ue_report[i]->pdcp_stats = pdcp_aggr_stats;

      }
    }
  }  else {
    LOG_D(FLEXRAN_AGENT, "no UE\n");
  }     
  
  return 0;
  
 error:
  LOG_W(FLEXRAN_AGENT, "Can't allocate PDCP stats\n");
  
  /* if (cell_report != NULL)
        free(cell_report);
  if (ue_report != NULL)
        free(ue_report);
  */
  return -1;
}



int flexran_agent_register_pdcp_xface(mid_t mod_id, AGENT_PDCP_xface *xface) {
  if (pdcp_agent_registered[mod_id]) {
    LOG_E(PDCP, "PDCP agent for eNB %d is already registered\n", mod_id);
    return -1;
  }

  //xface->flexran_pdcp_stats_measurement = NULL;

  pdcp_agent_registered[mod_id] = 1;
  agent_pdcp_xface[mod_id] = xface;

  return 0;
}

int flexran_agent_unregister_pdcp_xface(mid_t mod_id, AGENT_PDCP_xface *xface) {

  //xface->agent_ctxt = NULL;
  //xface->flexran_pdcp_stats_measurement = NULL;

  
  pdcp_agent_registered[mod_id] = 0;
  agent_pdcp_xface[mod_id] = NULL;

  return 0;
}