/*
** Copyright 2017-present Open Networking Foundation
**
** 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 <signal.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/time.h>
#include "bal_msg_type.grpc-c.h"
#include "bal_osmsg.grpc-c.h"
#include "bal_model_ids.grpc-c.h"
#include "bal_obj.grpc-c.h"
#include "bal_model_types.grpc-c.h"
#include "bal_errno.grpc-c.h"
#include "bal.grpc-c.h"

#ifdef BAL_STUB
#include "bal_stub.h"
#else
#include "asfvolt16_driver.h"
#endif

/* Global varibles */
balCoreIpInfo coreIpPortInfo;

static grpc_c_server_t *test_server;

static void sigint_handler (int x) { 
   grpc_c_server_destroy(test_server);
   exit(0);
}

/*
 * This functions gets invoked whenever bal RPC gets called
 */
void bal__bal_cfg_get_cb(grpc_c_context_t *context)
{
   BalCfg *get_cfg;

   /*
    * Read incoming message into get_cfg
    */
   if (context->gcc_payload) {
      context->gcc_stream->read(context, (void **)&get_cfg, 0);
   }

#ifndef BAL_STUB
   //asfvolt16_bal_cfg_get(key, get_cfg);
#endif
}

/*
 * This functions gets invoked whenever bal RPC gets called
 */
void bal__bal_cfg_set_cb(grpc_c_context_t *context)
{
   BalCfg *set_cfg;
   BalErr bal_err;
   int ret_val = 0;

   /*
    * Read incoming message into set_cfg
    */
   if (context->gcc_payload) {
      context->gcc_stream->read(context, (void **)&set_cfg, 0);
   }

   /*
    * send it to BAL
    */

   bal_err__init(&bal_err);

   bal_err.err= 0;

   /*
    * Write reply back to the client
    */
 
   ret_val = context->gcc_stream->write(context, &bal_err, 0);
   if (ret_val != GRPC_C_WRITE_OK) {
      if(ret_val == GRPC_C_WRITE_PENDING) {
         printf("write is pending, sleep for 10 sec\n", ret_val);
         sleep(10);
      }
      else {
         printf("Failed to write\n", ret_val);
         exit(1);
      }
   }

   grpc_c_status_t status;
   status.gcs_code = 0;

   /*
    * Finish response for RPC
    */
   if (context->gcc_stream->finish(context, &status)) {
      printf("Failed to write status\n");
      exit(1);
   }

#ifdef BAL_STUB
   pthread_mutex_lock(&lock);

   struct QNode *temp = newNode(set_cfg->hdr->obj_type, 
         BAL_ERRNO__BAL_ERR_OK, 
         set_cfg->device_id);

/*   if(set_cfg->hdr->has_obj_type)
   { */

      switch(set_cfg->hdr->obj_type)
      {
         case BAL_OBJ_ID__BAL_OBJ_ID_ACCESS_TERMINAL:
            {
               printf("\n***************************************************\n");  
               printf("Received Access Terminal Configuration msg\n");
               printf("***************************************************\n");  
            }
            break;
         case BAL_OBJ_ID__BAL_OBJ_ID_INTERFACE:
            {
               printf("\n***************************************************\n");  
               printf("Received PON Interface Configuration msg\n");
               printf("***************************************************\n");  
               temp->intf_id = set_cfg->interface->key->intf_id;
               printf("Pon ID = %d\n", temp->intf_id);
            }
            break;
         case BAL_OBJ_ID__BAL_OBJ_ID_SUBSCRIBER_TERMINAL:
            {
          printf("\n*****************************************************\n");  
          printf("Received ONU Activation msg\n");
          printf("*****************************************************\n");  
          temp->intf_id = set_cfg->terminal->key->intf_id;
          temp->onu_id = set_cfg->terminal->key->sub_term_id;
          memset(temp->vendor_id, 0, BAL_DEVICE_STR_LEN);
          memcpy(temp->vendor_id, 
                set_cfg->terminal->data->serial_number->vendor_id, 
                strlen(set_cfg->terminal->data->serial_number->vendor_id));
          memset(temp->vendor_specific, 0, BAL_DEVICE_STR_LEN);
          memcpy(temp->vendor_specific, 
                set_cfg->terminal->data->serial_number->vendor_specific, 
                strlen(set_cfg->terminal->data->serial_number->vendor_specific));

            }
            break;
    case BAL_OBJ_ID__BAL_OBJ_ID_PACKET:
       {
          switch(set_cfg->packet->key->packet_send_dest->type)
          {
             case BAL_DEST_TYPE__BAL_DEST_TYPE_ITU_OMCI_CHANNEL:
                {
                   printf("\n*****************************************************\n");  
                   printf("Received OMCI msg\n");
                   printf("*****************************************************\n");  
                   temp->intf_id = set_cfg->terminal->key->intf_id;
                   temp->onu_id = set_cfg->terminal->key->sub_term_id;
                }
                break;
             default:
                {
                   ("\n*****************************************************\n");  
                   printf("Dest type invalid\n");
                   printf("*****************************************************\n");  
                }
                break;
          }
       }
       break;
    default:
       {
          ("\n*****************************************************\n");  
          printf("Received Invalid msg\n");
          printf("*****************************************************\n");  
                    pthread_mutex_unlock(&lock);
                    return;
       }
       break;
      }
      enQueue(set_cfg->hdr->obj_type, temp);
/*
   }
   else
   {
      printf("BALSTUB:Cfg Set recevied without object type");
   } */
   pthread_mutex_unlock(&lock);
   sleep(2);   
   pthread_cond_signal(&cv);
/*
   if(BAL_OBJ_ID__BAL_OBJ_ID_INTERFACE == set_cfg->hdr->obj_type)
   {
      sleep(5); 
      struct QNode *temp1 = newNode(BAL_OBJ_ID__BAL_OBJ_ID_SUBSCRIBER_TERMINAL, 
            BAL_ERRNO__BAL_ERR_OK, 
            set_cfg->device_id);
      temp1->intf_id = set_cfg->interface->key->intf_id;
      temp1->onu_id = 65535;
      printf("sending _onu_discovery_indiaction\n");
      enQueue(BAL_OBJ_ID__BAL_OBJ_ID_SUBSCRIBER_TERMINAL, temp1); 
      pthread_cond_signal(&cv);
   }
*/
#else
   if(BAL_OBJ_ID__BAL_OBJ_ID_ACCESS_TERMINAL == set_cfg->hdr->obj_type)
   {
      sleep(5);//enable this if running with gdb
   }
   asfvolt16_bal_cfg_set(set_cfg);
#endif
}


/*
 * This functions gets invoked whenever bal clear RPC gets called
 */
void bal__bal_cfg_clear_cb(grpc_c_context_t *context)
{
   BalKey *clear_key;

   /*
    * Read incoming message into clear_key 
    */
   if (context->gcc_payload) {
      context->gcc_stream->read(context, (void **)&clear_key, 0);
   }

#ifndef BAL_STUB
   asfvolt16_bal_cfg_clear(clear_key);
#endif
}


/*
 * This functions gets invoked whenever bal Init RPC gets called
 */
void bal__bal_api_init_cb(grpc_c_context_t *context)
{
   BalInit *bal_init;
   BalErr bal_err;
   int ret_val;

   /*
    * Read incoming message into set_cfg
    */
   if (context->gcc_payload) {
      context->gcc_stream->read(context, (void **)&bal_init, 0);
   }

   /*
    * send it to BAL
    */


   ("\n*****************************************************\n");  
   printf("Received API Init msg\n");
   printf("*****************************************************\n");  

   bal_err__init(&bal_err);

   bal_err.err= 0;

   /*
    * Write reply back to the client
    */
   ret_val = context->gcc_stream->write(context, &bal_err, 0);
   if (ret_val != GRPC_C_WRITE_OK) {
      if(ret_val == GRPC_C_WRITE_PENDING) {
         printf("write is pending, sleep for 10 sec\n", ret_val);
         sleep(10);
      }
      else {
         printf("Failed to write\n", ret_val);
         exit(1);
      }
   }

   grpc_c_status_t status;
   status.gcs_code = 0;

   /*
    * Finish response for RPC
    */
   if (context->gcc_stream->finish(context, &status)) {
      printf("Failed to write status\n");
      exit(1);
   }

#ifndef BAL_STUB
   asfvolt16_bal_init(bal_init, &coreIpPortInfo);
#else
   printf("\nRecevied IP Address == %s \n", bal_init->voltha_adapter_ip_port);
   stub_bal_init(bal_init);
#endif

}


/*
 * This functions gets invoked whenever bal finish RPC gets called
 */
void bal__bal_api_finish_cb(grpc_c_context_t *context)
{
#if 0
   void *finish_init;

   /*
    * Read incoming message into set_cfg
    */
   if (context->gcc_payload) {
      context->gcc_stream->read(context, (void **)&finish_init);
   }
#endif
}

#if 0
/*
 * This functions gets invoked whenever bal finish RPC gets called
 */
void bal_ind__bal_ind_info_cb(grpc_c_context_t *context)
{
#if 0
   void *finish_init;

   /*
    * Read incoming message into set_cfg
    */
   if (context->gcc_payload) {
      context->gcc_stream->read(context, (void **)&finish_init);
   }
#endif
}
#endif

void bal_ind__bal_acc_term_ind_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_acc_term_oper_sts_cng_ind_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_flow_oper_sts_cng_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_flow_ind_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_group_ind_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_iface_oper_sts_cng_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_iface_los_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_iface_ind_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_iface_stat_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_subs_term_oper_sts_cng_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_subs_term_discovery_ind_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_subs_term_alarm_ind_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_subs_term_dgi_ind_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_subs_term_ind_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_tm_queue_ind_info_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_tm_sched_ind_info_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_pkt_bearer_channel_rx_ind_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_pkt_omci_channel_rx_ind_cb(grpc_c_context_t *context)
{
}
void bal_ind__bal_pkt_ieee_oam_channel_rx_ind_cb(grpc_c_context_t *context)
{
}
void bal__bal_api_heartbeat_cb(grpc_c_context_t *context)
{
   BalHeartbeat *bal_hb;
   BalErr bal_err;

   /*
    * Read incoming message into set_cfg
    */
   printf("\nRecevied HeartBeat from Adapter\n");
   if (context->gcc_payload) {
	context->gcc_stream->read(context, (void **)&bal_hb, 0);
   }

   printf("Received Heart Beat msg\n");

   bal_err__init(&bal_err);

   bal_err.err= 0;

   /*
    * Write reply back to the client
    */
    if (!context->gcc_stream->write(context, &bal_err, 0)) {
    } else {
              printf("Failed to write\n");
	      exit(1);
    }

    grpc_c_status_t status;
    status.gcs_code = 0;

    /*
     * Finish response for RPC
     */
    if (context->gcc_stream->finish(context, &status)) {
	printf("Failed to write status\n");
	exit(1);
    }
   printf("\nSent HeartBeat Response to Adapter\n");
}

/*
 * Takes socket path as argument
 */
int main (int argc, char **argv) 
{
   int i = 0;
   grpc_c_server_t *server = NULL;

   if (argc < 6) {
      fprintf(stderr, "Missing socket path argument\n");
      exit(1);
   }

   strcpy(coreIpPortInfo.bal_core_arg1, argv[2] /*, strlen(argv[2])*/);
   strcpy(coreIpPortInfo.bal_core_ip_port, argv[3]/*, strlen(argv[3])*/);
   strcpy(coreIpPortInfo.bal_core_arg2, argv[4]/*, strlen(argv[4])*/);
   strcpy(coreIpPortInfo.bal_shared_lib_ip_port, argv[5]/*, strlen(argv[5])*/);

   signal(SIGINT, sigint_handler);
   /*
    * Initialize grpc-c library to be used with vanilla gRPC
    */
   grpc_c_init(GRPC_THREADS, NULL);

   /*
    * Create server object
    */
   test_server = grpc_c_server_create(argv[1]);

   if (test_server == NULL) {
      printf("Failed to create server\n");
      exit(1);
   }

   /*
    * Initialize greeter service
    */
   printf("\nbal_voltha_app running.....\n");
   bal__service_init(test_server);

   /*
    * Start server
    */
   grpc_c_server_start(test_server);

#ifdef BAL_STUB
   printf("\nCreating a stub thread\n");
   create_stub_thread();
#endif

   /*
    * Blocks server to wait to completion
    */
   grpc_c_server_wait(test_server);

   /* code added for example Makefile to compile grpc-c along with edgecore driver */
   bal__service_init(server);

}