/*
 * Copyright (c) 2006 Sandia Corporation. Under the terms of Contract
 * DE-AC04-94AL85000 with Sandia Corporation, the U.S. Governement
 * 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 Sandia Corporation 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.
 * 
 */
/*****************************************************************************
*
* expvar - ex_put_var
*
* entry conditions - 
*   input parameters:
*       int     exoid                   exodus file id
*       int     time_step               time step number
*       int     var_type                type (edge block, face block, edge set, ... )
*       int     var_index               element variable index
*       int     obj_id                  element block id
*       int     num_entries_this_obj    number of entries in this block/set
*
* exit conditions -
*
*
* exit conditions - 
*
* revision history - 
*
*  Id
*
*****************************************************************************/

#include <stdlib.h>
#include "exodusII.h"
#include "exodusII_int.h"

/*!
 * writes the values of a single variable for one block at one time
 * step to the database; assume the first time step and variable index
 * are 1
 * \param      exoid                   exodus file id
 * \param      time_step               time step number
 * \param      var_type                type (edge block, face block, edge set, ... )
 * \param      var_index               element variable index
 * \param      obj_id                  element block id
 * \param      num_entries_this_obj    number of entries in this block/set
 * \param      var_vals                the values to be written
 */

int ex_put_var (int   exoid,
                int   time_step,
                ex_entity_type var_type,
                int   var_index,
                int   obj_id,
                int   num_entries_this_obj,
                const void *var_vals)
{
  int varid, dimid,time_dim, numobjdim, dims[2], obj_id_ndx;
  size_t num_obj;
  size_t num_obj_var;
  size_t num_entity;
  size_t start[2], count[2];
  int *obj_var_truth_tab;
  int status;
  char errmsg[MAX_ERR_LENGTH];

  exerrval = 0; /* clear error code */

#define EX_LOOK_UP_VAR(VOBJID,VVAR,VOBJTAB,DNUMOBJ,DNUMOBJVAR)		\
  /* Determine index of obj_id in VOBJID array */			\
    obj_id_ndx = ex_id_lkup(exoid,var_type,obj_id);			\
    if (exerrval != 0)							\
      {									\
	if (exerrval == EX_NULLENTITY)					\
	  {								\
	    sprintf(errmsg,						\
		    "Warning: no variables allowed for NULL block %d in file id %d", \
		    obj_id,exoid);					\
	    ex_err("ex_put_var",errmsg,EX_MSG);				\
	    return (EX_WARN);						\
	  }								\
	else								\
	  {								\
	    sprintf(errmsg,						\
		    "Error: failed to locate %s id %d in %s array in file id %d", \
		    ex_name_of_object(var_type), obj_id, VOBJID, exoid); \
	    ex_err("ex_put_var",errmsg,exerrval);			\
	    return (EX_FATAL);						\
	  }								\
      }									\
									\
    if ((status = nc_inq_varid (exoid, VVAR(var_index,obj_id_ndx), &varid)) != NC_NOERR) \
      {									\
	if (status == NC_ENOTVAR) /* variable doesn't exist, create it! */ \
	  {								\
	    /* check for the existance of an TNAME variable truth table */ \
	    if (nc_inq_varid(exoid, VOBJTAB, &varid) == NC_NOERR) {	\
	      /* find out number of TNAMEs and TNAME variables */	\
	      status = ex_get_dimension(exoid, DNUMOBJ, ex_name_of_object(var_type), &num_obj, &dimid, "ex_put_var"); \
	      if (status != NC_NOERR) return status;			\
									\
	      status = ex_get_dimension(exoid, DNUMOBJVAR, ex_name_of_object(var_type), &num_obj_var, &dimid, "ex_put_var"); \
	      if (status != NC_NOERR) return status;			\
									\
	      if (!(obj_var_truth_tab = malloc(num_obj*num_obj_var*sizeof(int)))) \
		{							\
		  exerrval = EX_MEMFAIL;				\
		  sprintf(errmsg,					\
			  "Error: failed to allocate memory for %s variable truth table in file id %d", \
			  ex_name_of_object(var_type), exoid);		\
		  ex_err("ex_put_var",errmsg,exerrval);			\
		  return (EX_FATAL);					\
		}							\
									\
	      /*   read in the TNAME variable truth table */		\
	      if ((status = nc_get_var_int (exoid, varid, obj_var_truth_tab)) != NC_NOERR) \
		{							\
		  exerrval = status;					\
		  sprintf(errmsg,					\
			  "Error: failed to get truth table from file id %d", exoid); \
		  ex_err("ex_put_var",errmsg,exerrval);			\
		  return (EX_FATAL);					\
		}							\
									\
	      if(obj_var_truth_tab[num_obj_var*(obj_id_ndx-1)+var_index-1] \
		 == 0L)							\
		{							\
		  free(obj_var_truth_tab);				\
		  exerrval = EX_BADPARAM;				\
		  sprintf(errmsg,					\
			  "Error: Invalid %s variable %d, %s %d in file id %d", \
			  ex_name_of_object(var_type), var_index, ex_name_of_object(var_type), obj_id, exoid); \
		  ex_err("ex_put_var",errmsg,exerrval);			\
		  return (EX_FATAL);					\
		}							\
	      free(obj_var_truth_tab);					\
	    }								\
									\
	    if ((status = nc_inq_dimid(exoid, DIM_TIME, &time_dim)) != NC_NOERR) { \
	      exerrval = status;					\
	      sprintf(errmsg,						\
		      "Error: failed to locate time dimension in file id %d", exoid); \
	      ex_err("ex_put_var",errmsg,exerrval);			\
	      goto error_ret;         /* exit define mode and return */ \
	    }								\
									\
	    ex_get_dimension(exoid, ex_dim_num_entries_in_object(var_type, obj_id_ndx), \
			     ex_name_of_object(var_type), &num_entity, &numobjdim,  "ex_put_var"); \
									\
	    /*    variable doesn't exist so put file into define mode  */ \
	    if ((status = nc_redef (exoid)) != NC_NOERR) {		\
	      exerrval = status;					\
	      sprintf(errmsg,						\
		      "Error: failed to put file id %d into define mode", exoid); \
	      ex_err("ex_put_var",errmsg,exerrval);			\
	      return (EX_FATAL);					\
	    }								\
									\
	    /* define netCDF variable to store TNAME variable values */	\
	    dims[0] = time_dim;						\
	    dims[1] = numobjdim;					\
	    if ((status = nc_def_var(exoid, VVAR(var_index,obj_id_ndx), \
				     nc_flt_code(exoid), 2, dims, &varid)) != NC_NOERR)	\
	      {								\
		exerrval = status;					\
		sprintf(errmsg,						\
			"Error: failed to define %s variable %d in file id %d", \
			ex_name_of_object(var_type), var_index,exoid);	\
		ex_err("ex_put_var",errmsg,exerrval);			\
		goto error_ret;						\
	      }								\
									\
	    /*    leave define mode  */					\
									\
	    if ((status = nc_enddef (exoid)) != NC_NOERR)		\
	      {								\
		exerrval = status;					\
		sprintf(errmsg,						\
			"Error: failed to complete %s variable %s definition to file id %d", \
			ex_name_of_object(var_type), VVAR(var_index,obj_id_ndx), exoid); \
		ex_err("ex_put_var",errmsg,exerrval);			\
		return (EX_FATAL);					\
	      }								\
	  }								\
	else								\
	  {								\
	    exerrval = status;						\
	    sprintf(errmsg,						\
		    "Error: failed to locate %s variable %s in file id %d", \
		    ex_name_of_object(var_type), VVAR(var_index,obj_id_ndx),exoid); \
	    ex_err("ex_put_var",errmsg,exerrval);			\
	    return (EX_FATAL);						\
	  }								\
      }

  switch (var_type) {
  case EX_GLOBAL:
    if ( num_entries_this_obj <= 0 ) {
      exerrval = EX_MSG;
      sprintf(errmsg,
	      "Warning: no global variables specified for file id %d",
	      exoid);
      ex_err("ex_put_glob_vars",errmsg,exerrval);

      return (EX_WARN);
    }
    /* inquire previously defined variable */

    if ((status = nc_inq_varid (exoid, VAR_GLO_VAR, &varid)) != NC_NOERR) {
      if (status == NC_ENOTVAR) {
        exerrval = status;
        sprintf(errmsg,
		"Error: no global variables defined in file id %d",
		exoid);
        ex_err("ex_put_glob_vars",errmsg,exerrval);
      } else {
        exerrval = status;
        sprintf(errmsg,
		"Error: failed to get global variables parameters in file id %d",
		exoid);
        ex_err("ex_put_glob_vars",errmsg,exerrval);
      }
      return (EX_FATAL);
    } 
    break;
  case EX_NODAL:
    return ex_put_nodal_var(exoid, time_step, var_index, num_entries_this_obj, var_vals);
    break;
  case EX_EDGE_BLOCK:
    EX_LOOK_UP_VAR(VAR_ID_ED_BLK,VAR_EDGE_VAR,VAR_EBLK_TAB,DIM_NUM_ED_BLK,DIM_NUM_EDG_VAR);
    break;
  case EX_FACE_BLOCK:
    EX_LOOK_UP_VAR(VAR_ID_FA_BLK,VAR_FACE_VAR,VAR_FBLK_TAB,DIM_NUM_FA_BLK,DIM_NUM_FAC_VAR);
    break;
  case EX_ELEM_BLOCK:
    EX_LOOK_UP_VAR(VAR_ID_EL_BLK,VAR_ELEM_VAR,VAR_ELEM_TAB,DIM_NUM_EL_BLK,DIM_NUM_ELE_VAR);
    break;
  case EX_NODE_SET:
    EX_LOOK_UP_VAR(VAR_NS_IDS,VAR_NS_VAR,VAR_NSET_TAB,DIM_NUM_NS,DIM_NUM_NSET_VAR);
    break;
  case EX_EDGE_SET:
    EX_LOOK_UP_VAR(VAR_ES_IDS,VAR_ES_VAR,VAR_ESET_TAB,DIM_NUM_ES,DIM_NUM_ESET_VAR);
    break;
  case EX_FACE_SET:
    EX_LOOK_UP_VAR(VAR_FS_IDS,VAR_FS_VAR,VAR_FSET_TAB,DIM_NUM_FS,DIM_NUM_FSET_VAR);
    break;
  case EX_SIDE_SET:
    EX_LOOK_UP_VAR(VAR_SS_IDS,VAR_SS_VAR,VAR_SSET_TAB,DIM_NUM_SS,DIM_NUM_SSET_VAR);
    break;
  case EX_ELEM_SET:
    EX_LOOK_UP_VAR(VAR_ELS_IDS,VAR_ELS_VAR,VAR_ELSET_TAB,DIM_NUM_ELS,DIM_NUM_ELSET_VAR);
    break;
  default:
    exerrval = EX_MSG;
    sprintf( errmsg, "Error: invalid variable type (%d) specified for file id %d",
	     var_type, exoid );
    ex_err( "ex_put_var", errmsg, exerrval );
    return (EX_FATAL);
  }
  /* store element variable values */

  start[0] = --time_step;
  start[1] = 0;

  if ( var_type == EX_GLOBAL ) {
    /* global variables may be written
     * - all at once (by setting var_index to 1 and num_entries_this_obj to num_glob, or
     * - one at a time (by setting var_index to the desired index and num_entries_this_obj to 1.
     */
    count[0] = var_index;
  } else {
    count[0] = 1;
  }
  count[1] = num_entries_this_obj;

  if (ex_comp_ws(exoid) == 4) {
    status = nc_put_vara_float(exoid, varid, start, count, var_vals);
  } else {
    status = nc_put_vara_double(exoid, varid, start, count, var_vals);
  }

  if (status != NC_NOERR) {
    exerrval = status;
    sprintf(errmsg,
	    "Error: failed to store %s %d variable %d in file id %d", 
	    ex_name_of_object(var_type), obj_id, var_index,exoid);
    ex_err("ex_put_var",errmsg,exerrval);
    return (EX_FATAL);
  }

  return (EX_NOERR);

  /* Fatal error: exit definition mode and return */
 error_ret:
  if (nc_enddef (exoid) != NC_NOERR)     /* exit define mode */
    {
      sprintf(errmsg,
	      "Error: failed to complete definition for file id %d",
	      exoid);
      ex_err("ex_put_var",errmsg,exerrval);
    }
  return (EX_FATAL);
}
