/*
 * Copyright (c) 2005-2017 National Technology & Engineering Solutions
 * of Sandia, LLC (NTESS).  Under the terms of Contract DE-NA0003525 with
 * NTESS, the U.S. Government retains certain rights in this software.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
 *
 *     * Neither the name of NTESS nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
/*****************************************************************************/
/*****************************************************************************/
/*****************************************************************************/
/* Function(s) contained in this file:
 *     ex_put_cmap_params()
 *****************************************************************************
 * This function outputs the communication map parameters.
 *****************************************************************************
 *  Variable Index:
 *      exoid                - The NetCDF ID of an already open NemesisI file.
 *      node_cmap_ids       - Pointer to vector of nodal communication
 *                            set IDs.
 *      node_cmap_node_cnts - Pointer to a vector which contains a count of
 *                            the number of FEM nodes for each nodal
 *                            communication map.
 *      elem_cmap_ids       - Pointer to vector for retrieval of elemental
 *                            communication set IDs.
 *      elem_cmap_elem_cnts - Pointer to a vector which contains a count of
 *                            the number of FEM elements for each elemental
 *                            communication map.
 *      processor           - The processor the file being read was written
 *                            for.
 */
/*****************************************************************************/
/*****************************************************************************/
/*****************************************************************************/

#include <exodusII.h>     // for ex_err, etc
#include <exodusII_int.h> // for EX_FATAL, ex_leavedef, etc
#include <vtk_netcdf.h>       // for NC_NOERR, nc_def_var, etc
#include <stddef.h>       // for size_t
#include <stdint.h>       // for int64_t
#include <stdio.h>

int ex_put_cmap_params(int exoid, void_int *node_cmap_ids, void_int *node_cmap_node_cnts,
                       void_int *elem_cmap_ids, void_int *elem_cmap_elem_cnts, int64_t processor)
{
  size_t  num_n_comm_maps, num_e_comm_maps;
  size_t  ncnt_cmap, ecnt_cmap;
  size_t  icm;
  int     varid, dimid[1], n_varid, e_varid, status;
  int     n_varid_idx, e_varid_idx;
  size_t  start[1];
  char    ftype[2];
  int64_t nl_ncnt_cmap, nl_ecnt_cmap;
  int     nmstat;

  char errmsg[MAX_ERR_LENGTH];

  int index_type = NC_INT;
  int id_type    = NC_INT;
  int format;

  EX_FUNC_ENTER();
  ex_check_valid_file_id(exoid, __func__);

  nc_inq_format(exoid, &format);
  if ((ex_int64_status(exoid) & EX_BULK_INT64_DB) || (format == NC_FORMAT_NETCDF4)) {
    index_type = NC_INT64;
  }
  if (ex_int64_status(exoid) & EX_IDS_INT64_DB) {
    id_type = NC_INT64;
  }
  /*-----------------------------Execution begins-----------------------------*/

  /*
  ** with the new database format, this function should only
  ** be used for writing a parallel file
  */
  /* Get the file type */
  if (ex_get_file_type(exoid, ftype) != EX_NOERR) {
    snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to get file type from file ID %d\n", exoid);
    ex_err(__func__, errmsg, EX_MSG);
    EX_FUNC_LEAVE(EX_FATAL);
  }

  /* make sure that this is a parallel file */
  if (ftype[0] != 'p') {
    snprintf(errmsg, MAX_ERR_LENGTH,
             "ERROR: function for use with parallel files only, file ID %d\n", exoid);
    ex_err(__func__, errmsg, EX_MSG);
    EX_FUNC_LEAVE(EX_FATAL);
  }

  /* Put NetCDF file into define mode */
  if ((status = nc_redef(exoid)) != NC_NOERR) {
    snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to file ID %d into define mode", exoid);
    ex_err(__func__, errmsg, status);
    EX_FUNC_LEAVE(EX_FATAL);
  }

  /* Check to see if there are nodal communications maps in the file */
  if ((status = nc_inq_dimid(exoid, DIM_NUM_N_CMAPS, &dimid[0])) != NC_NOERR) {
    num_n_comm_maps = 0;
  }
  else {
    if ((status = nc_inq_dimlen(exoid, dimid[0], &num_n_comm_maps)) != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH,
               "ERROR: failed to find length of dimension \"%s\" in file ID %d", DIM_NUM_N_CMAPS,
               exoid);
      ex_err(__func__, errmsg, status);
      EX_FUNC_LEAVE(EX_FATAL);
    }
  }

  /*
   * Add dimensions for the size of the number of nodal
   * communication maps.
   */
  if (num_n_comm_maps > 0) {

    /* add the communications data index variable */
    if ((status = nc_def_var(exoid, VAR_N_COMM_DATA_IDX, index_type, 1, dimid, &n_varid_idx)) !=
        NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to add variable \"%s\" in file ID %d",
               VAR_N_COMM_DATA_IDX, exoid);
      ex_err(__func__, errmsg, status);
      /* Leave define mode before returning */
      ex_leavedef(exoid, __func__);

      EX_FUNC_LEAVE(EX_FATAL);
    }

    /* Add dimensions for all of the nodal communication maps */
    ncnt_cmap = 0;
    if (ex_int64_status(exoid) & EX_BULK_INT64_API) {
      for (icm = 0; icm < num_n_comm_maps; icm++) {
        ncnt_cmap += ((int64_t *)node_cmap_node_cnts)[icm];
      }
    }
    else {
      for (icm = 0; icm < num_n_comm_maps; icm++) {
        ncnt_cmap += ((int *)node_cmap_node_cnts)[icm];
      }
    }

    if ((status = nc_def_dim(exoid, DIM_NCNT_CMAP, ncnt_cmap, &dimid[0])) != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to add dimension for \"%s\" in file ID %d",
               DIM_NCNT_CMAP, exoid);
      ex_err(__func__, errmsg, status);
      /* Leave define mode before returning */
      ex_leavedef(exoid, __func__);

      EX_FUNC_LEAVE(EX_FATAL);
    }

    /* Define variables for the nodal IDS and processor vectors */
    if ((status = nc_def_var(exoid, VAR_N_COMM_NIDS, id_type, 1, dimid, &varid)) != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to add variable \"%s\" in file ID %d",
               VAR_N_COMM_NIDS, exoid);
      ex_err(__func__, errmsg, status);
      /* Leave define mode before returning */
      ex_leavedef(exoid, __func__);

      EX_FUNC_LEAVE(EX_FATAL);
    }
    ex_compress_variable(exoid, varid, 1);

    if ((status = nc_def_var(exoid, VAR_N_COMM_PROC, NC_INT, 1, dimid, &varid)) != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to add variable \"%s\" in file ID %d",
               VAR_N_COMM_PROC, exoid);
      ex_err(__func__, errmsg, status);
      /* Leave define mode before returning */
      ex_leavedef(exoid, __func__);

      EX_FUNC_LEAVE(EX_FATAL);
    }
    ex_compress_variable(exoid, varid, 1);

  } /* End "if (num_n_comm_maps > 0)" */

  /* Check to see if there are elemental communications maps in the file */
  if ((status = nc_inq_dimid(exoid, DIM_NUM_E_CMAPS, &dimid[0])) != NC_NOERR) {
    num_e_comm_maps = 0;
  }
  else {
    if ((status = nc_inq_dimlen(exoid, dimid[0], &num_e_comm_maps)) != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH,
               "ERROR: failed to find length of dimension \"%s\" in file ID %d", DIM_NUM_E_CMAPS,
               exoid);
      ex_err(__func__, errmsg, status);
      EX_FUNC_LEAVE(EX_FATAL);
    }
  }

  /*
   * Add dimensions for the size of the number of elemental
   * communication maps.
   */
  if (num_e_comm_maps > 0) {

    /* add the communications data index variable */
    if ((status = nc_def_var(exoid, VAR_E_COMM_DATA_IDX, index_type, 1, dimid, &e_varid_idx)) !=
        NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to add variable \"%s\" in file ID %d",
               VAR_E_COMM_DATA_IDX, exoid);
      ex_err(__func__, errmsg, status);
      /* Leave define mode before returning */
      ex_leavedef(exoid, __func__);

      EX_FUNC_LEAVE(EX_FATAL);
    }

    /* Add dimensions for each of the nodal communication maps */
    ecnt_cmap = 0;
    if (ex_int64_status(exoid) & EX_BULK_INT64_API) {
      for (icm = 0; icm < num_e_comm_maps; icm++) {
        ecnt_cmap += ((int64_t *)elem_cmap_elem_cnts)[icm];
      }
    }
    else {
      for (icm = 0; icm < num_e_comm_maps; icm++) {
        ecnt_cmap += ((int *)elem_cmap_elem_cnts)[icm];
      }
    }
    if ((status = nc_def_dim(exoid, DIM_ECNT_CMAP, ecnt_cmap, &dimid[0])) != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to add dimension for \"%s\" in file ID %d",
               DIM_ECNT_CMAP, exoid);
      ex_err(__func__, errmsg, status);
      /* Leave define mode before returning */
      ex_leavedef(exoid, __func__);

      EX_FUNC_LEAVE(EX_FATAL);
    }

    /* Define variables for the element IDS and processor vectors */
    if ((status = nc_def_var(exoid, VAR_E_COMM_EIDS, id_type, 1, dimid, &varid)) != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to add variable \"%s\" in file ID %d",
               VAR_E_COMM_EIDS, exoid);
      ex_err(__func__, errmsg, status);
      /* Leave define mode before returning */
      ex_leavedef(exoid, __func__);

      EX_FUNC_LEAVE(EX_FATAL);
    }
    ex_compress_variable(exoid, varid, 1);

    if ((status = nc_def_var(exoid, VAR_E_COMM_PROC, NC_INT, 1, dimid, &varid)) != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to add variable \"%s\" in file ID %d",
               VAR_E_COMM_PROC, exoid);
      ex_err(__func__, errmsg, status);
      /* Leave define mode before returning */
      ex_leavedef(exoid, __func__);

      EX_FUNC_LEAVE(EX_FATAL);
    }
    ex_compress_variable(exoid, varid, 1);

    if ((status = nc_def_var(exoid, VAR_E_COMM_SIDS, NC_INT, 1, dimid, &varid)) != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to add variable \"%s\" in file ID %d",
               VAR_E_COMM_SIDS, exoid);
      ex_err(__func__, errmsg, status);
      /* Leave define mode before returning */
      ex_leavedef(exoid, __func__);

      EX_FUNC_LEAVE(EX_FATAL);
    }
    ex_compress_variable(exoid, varid, 1);

  } /* End "if (num_e_comm_maps > 0)" */

  /* Exit define mode */
  ex_leavedef(exoid, __func__);

  /* Set the status of the nodal communication maps */
  if (num_n_comm_maps > 0) {

    if ((status = nc_inq_varid(exoid, VAR_N_COMM_STAT, &n_varid)) != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to find variable ID for \"%s\" in file ID %d",
               VAR_N_COMM_STAT, exoid);
      ex_err(__func__, errmsg, status);
      EX_FUNC_LEAVE(EX_FATAL);
    }

    nl_ncnt_cmap = 0; /* reset this for index */
    for (icm = 0; icm < num_n_comm_maps; icm++) {

      size_t ncnc;
      if (ex_int64_status(exoid) & EX_BULK_INT64_API) {
        ncnc = ((int64_t *)node_cmap_node_cnts)[icm];
      }
      else {
        ncnc = ((int *)node_cmap_node_cnts)[icm];
      }

      start[0] = icm;
      if (ncnc > 0) {
        nmstat = 1;
      }
      else {
        nmstat = 0;
      }

      if ((status = nc_put_var1_int(exoid, n_varid, start, &nmstat)) != NC_NOERR) {
        snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: unable to output variable in file ID %d", exoid);
        ex_err(__func__, errmsg, status);
        EX_FUNC_LEAVE(EX_FATAL);
      }

      /* increment to the next starting position */
      nl_ncnt_cmap += ncnc;

      /* fill the cmap data index */
      if ((status = nc_put_var1_longlong(exoid, n_varid_idx, start, (long long *)&nl_ncnt_cmap)) !=
          NC_NOERR) {
        snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to output int elem map index in file ID %d",
                 exoid);
        ex_err(__func__, errmsg, status);
        EX_FUNC_LEAVE(EX_FATAL);
      }
    } /* End "for(icm=0; icm < num_n_comm_maps; icm++)" */

    /* Get the variable ID for the comm map IDs vector */
    if ((status = nc_inq_varid(exoid, VAR_N_COMM_IDS, &n_varid)) != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to find variable ID for \"%s\" in file ID %d",
               VAR_N_COMM_IDS, exoid);
      ex_err(__func__, errmsg, status);
      EX_FUNC_LEAVE(EX_FATAL);
    }

    /* Output the nodal comm map IDs */
    if (ex_int64_status(exoid) & EX_IDS_INT64_API) {
      status = nc_put_var_longlong(exoid, n_varid, node_cmap_ids);
    }
    else {
      status = nc_put_var_int(exoid, n_varid, node_cmap_ids);
    }
    if (status != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to output variable in file ID %d", exoid);
      ex_err(__func__, errmsg, status);
      EX_FUNC_LEAVE(EX_FATAL);
    }

  } /* End "if (num_n_comm_maps > 0)" */

  /* Set the status of the elemental communication maps */
  if (num_e_comm_maps > 0) {

    /* Get variable ID for elemental status vector */
    if ((status = nc_inq_varid(exoid, VAR_E_COMM_STAT, &e_varid)) != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to find variable ID for \"%s\" in file ID %d",
               VAR_E_COMM_STAT, exoid);
      ex_err(__func__, errmsg, status);
      EX_FUNC_LEAVE(EX_FATAL);
    }

    nl_ecnt_cmap = 0; /* reset this for index */
    for (icm = 0; icm < num_e_comm_maps; icm++) {
      size_t ecec;
      if (ex_int64_status(exoid) & EX_BULK_INT64_API) {
        ecec = ((int64_t *)elem_cmap_elem_cnts)[icm];
      }
      else {
        ecec = ((int *)elem_cmap_elem_cnts)[icm];
      }
      start[0] = icm;
      if (ecec > 0) {
        nmstat = 1;
      }
      else {
        nmstat = 0;
      }

      if ((status = nc_put_var1_int(exoid, e_varid, start, &nmstat)) != NC_NOERR) {
        snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: unable to output variable in file ID %d", exoid);
        ex_err(__func__, errmsg, status);
        EX_FUNC_LEAVE(EX_FATAL);
      }

      /* increment to the next starting position */
      nl_ecnt_cmap += ecec;

      /* fill the cmap data index */
      if ((status = nc_put_var1_longlong(exoid, e_varid_idx, start, (long long *)&nl_ecnt_cmap)) !=
          NC_NOERR) {
        snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to output int elem map index in file ID %d",
                 exoid);
        ex_err(__func__, errmsg, status);
        EX_FUNC_LEAVE(EX_FATAL);
      }
    } /* End "for(icm=0; icm < num_e_comm_maps; icm++)" */

    /* Get the variable ID for the elemental comm map IDs vector */
    if ((status = nc_inq_varid(exoid, VAR_E_COMM_IDS, &e_varid)) != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to find variable ID for \"%s\" in file ID %d",
               VAR_E_COMM_IDS, exoid);
      ex_err(__func__, errmsg, status);
      EX_FUNC_LEAVE(EX_FATAL);
    }

    /* Output the elemental comm map IDs */
    if (ex_int64_status(exoid) & EX_IDS_INT64_API) {
      status = nc_put_var_longlong(exoid, e_varid, elem_cmap_ids);
    }
    else {
      status = nc_put_var_int(exoid, e_varid, elem_cmap_ids);
    }
    if (status != NC_NOERR) {
      snprintf(errmsg, MAX_ERR_LENGTH, "ERROR: failed to output variable in file ID %d", exoid);
      ex_err(__func__, errmsg, status);

      EX_FUNC_LEAVE(EX_FATAL);
    }

  } /* End "if (num_e_comm_maps > 0)" */

  EX_FUNC_LEAVE(EX_NOERR);
}
