#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifdef _WIN32
#define rindex(X,Y) strrchr(X,Y)
#define index(X,Y) strchr(X,Y)
#endif

#include "protos.h"
#include "registry.h"
#include "data.h"

int contains_str( char *s1, char *s2 )
{
  int i ;
  char *p, *q, *r ;
  if ( s2 == NULL || s1 == NULL ) return ( 0 ) ;
  if ( *s2 == '\0' || *s1 == '\0' ) return ( 0 ) ;
  p = s1 ;
  while ( *p ) {
    if ((r = (char *)index( p , *s2 )) == NULL ) { return( 0 ) ; }
    for ( q = s2 ; *q && *r == *q ; r++ , q++ )  ;
    if ( *q == '\0' ) return (1) ;
    p++ ;
  }
  return( 0 ) ;
}

int contains_tok( char *s1, char *s2, char *delims )
{
  char *p ;
  char tempstr[8092] ;

  strcpy( tempstr , s1 ) ;
  p = strtok ( tempstr, delims ) ;
  while ( p != NULL )
  {
    if ( !strcmp ( p , s2 ) ) {  return(1) ;}
    p = strtok( NULL, delims ) ;
  }
  return(0) ;
}
  

 /* Had to increase size for SOA from 4*4096 to 4*7000 */
char halo_define[4*7000], halo_use[NAMELEN], halo_id[NAMELEN], x[NAMELEN] ;

int 
gen_nest_interp ( char * dirname )
{
  char * fnlst[] = { "nest_forcedown_interp.inc" , "nest_interpdown_interp.inc" , 
                     "nest_feedbackup_interp.inc", "nest_feedbackup_smooth.inc",
                     0L } ;
  int down_path[] = { FORCE_DOWN , INTERP_DOWN , INTERP_UP, SMOOTH_UP } ;
  int ipath ;
  char ** fnp ; char * fn ;
  char fname[NAMELEN] ;
  FILE * fp ;

  for ( fnp = fnlst , ipath = 0 ; *fnp ; fnp++ , ipath++ )
  {
    fn = *fnp ;
    if ( dirname == NULL ) return(1) ;
    if ( strlen(dirname) > 0 )
     { sprintf(fname,"%s/%s",dirname,fn) ; }
    else
     { sprintf(fname,"%s",fn) ; }
    if ((fp = fopen( fname , "w" )) == NULL ) return(1) ;
    print_warning(fp,fname) ;

if      ( down_path[ipath] == INTERP_DOWN ) { sprintf(halo_id,"HALO_INTERP_DOWN") ; }
else if ( down_path[ipath] == FORCE_DOWN  ) { sprintf(halo_id,"HALO_FORCE_DOWN") ; }
else if ( down_path[ipath] == INTERP_UP   ) { sprintf(halo_id,"HALO_INTERP_UP") ; }
else if ( down_path[ipath] == SMOOTH_UP   ) { sprintf(halo_id,"HALO_INTERP_SMOOTH") ; }
sprintf(halo_define,"80:") ;
sprintf(halo_use,"") ;
      gen_nest_interp1 ( fp , Domain.fields, NULL, down_path[ipath], (down_path[ipath]==FORCE_DOWN)?2:2 ) ;
{
  node_t * comm_struct ;
  comm_struct = new_node( HALO ) ;
  strcpy( comm_struct->name        , halo_id     ) ;
  strcpy( comm_struct->use         , halo_use    ) ;
  strcpy( comm_struct->comm_define , halo_define ) ;
  add_node_to_end( comm_struct , &Halos ) ;
}


    close_the_file(fp) ;
  }
  return(0) ; 
}


int
gen_nest_interp1 ( FILE * fp , node_t * node, char * fourdname, int down_path , int use_nest_time_level )
{
  int i, ii ;
  char * fn = "nest_interp.inc" ;
  char fname[NAMELEN] ;
  node_t *p, *p1, *dim ;
  int d2, d3, xdex, ydex, zdex, nest_mask ;
  char ddim[3][2][NAMELEN] ;
  char mdim[3][2][NAMELEN] ;
  char pdim[3][2][NAMELEN] ;
  char ddim2[3][2][NAMELEN] ;
  char mdim2[3][2][NAMELEN] ;
  char pdim2[3][2][NAMELEN] ;
  char nddim[3][2][NAMELEN] ;
  char nmdim[3][2][NAMELEN] ;
  char npdim[3][2][NAMELEN] ;
  char nddim2[3][2][NAMELEN] ;
  char nmdim2[3][2][NAMELEN] ;
  char npdim2[3][2][NAMELEN] ;
  char vname[NAMELEN], vname2[NAMELEN] ; 
  char tag[NAMELEN], tag2[NAMELEN] ; 
  char fcn_name[NAMELEN] ;
  char xstag[NAMELEN], ystag[NAMELEN] ;
  char dexes[NAMELEN] ;
  char ndexes[NAMELEN] ;
  char *maskstr ;
  char *grid ;
  char *colon, r[10],tx[80],temp[80],moredims[80] ; 
  int d ; 


  for ( p1 = node ;  p1 != NULL ; p1 = p1->next )
  {
    if ( p1->node_kind & FOURD )
    {
      if ( p1->members->next ) {
        nest_mask = p1->members->next->nest_mask ;
      } else {
        continue ;
      }
    }
    else
    {
      nest_mask = p1->nest_mask ;
    }
    p = p1 ;

    if ( nest_mask & down_path )
    {
        if ( p->ntl > 1 ) { sprintf(tag,"_2") ; sprintf(tag2,"_%d", use_nest_time_level) ; }
        else              { sprintf(tag,"")   ; sprintf(tag2,"")                         ; }

        /* construct variable name */
        if ( p->node_kind & FOURD ) {

sprintf(x, "%s%s", p->name, tag ) ;
if ( ! contains_tok ( halo_define , x , ":," ) ) {
 if ( halo_define[strlen(halo_define)-1] == ':' ) { strcat(halo_define,p->name) ; strcat(halo_define,tag) ; }
 else                                             { strcat(halo_define,",") ; strcat(halo_define,p->name) ; strcat(halo_define,tag) ; }
}
          strcpy(moredims,"") ;
          for ( d = 3 ; d < p->ndims ; d++ ) {
            sprintf(temp,"idim%d",d-2) ;
            strcat(moredims,",") ; strcat(moredims,temp) ;
          }
          strcat(moredims,",") ;

          strcpy(dexes,"grid%sm31,grid%sm32,grid%sm33") ;
          sprintf(vname,"%s%s(%s%sitrace)",p->name,tag,dexes,moredims) ;
          strcpy(ndexes,"ngrid%sm31,ngrid%sm32,ngrid%sm33") ;
          sprintf(vname2,"%s%s(%s%sitrace)",p->name,tag2,ndexes,moredims) ;

          if ( down_path & SMOOTH_UP ) {
            strcpy( fcn_name , p->members->next->smoothu_fcn_name ) ;
	  } else {
            strcpy( fcn_name , (down_path & INTERP_UP)?p->members->next->interpu_fcn_name:((down_path & FORCE_DOWN)?p->members->next->force_fcn_name:p->members->next->interpd_fcn_name) ) ;
          }
        }
        else
        {
          sprintf(vname,"%s%s",p->name,tag) ;

if ( ! contains_tok ( halo_define , vname  , ":," ) ) {
 if ( halo_define[strlen(halo_define)-1] == ':' ) { strcat(halo_define,vname) ; }
 else                                             { strcat(halo_define,",") ; strcat(halo_define,vname) ; }
}
          sprintf(vname2,"%s%s",p->name,tag2) ;
          if ( down_path & SMOOTH_UP ) {
            strcpy( fcn_name , p->smoothu_fcn_name ) ;
	  } else {
            strcpy( fcn_name , (down_path & INTERP_UP)?p->interpu_fcn_name:((down_path & FORCE_DOWN)?p->force_fcn_name:p->interpd_fcn_name) ) ;
	  }
        }

        if ( p1->node_kind & FOURD ) {
          grid = "" ;
          set_dim_strs2 ( p->members->next , ddim , mdim , pdim , "c", 1 ) ;
          set_dim_strs2 ( p->members->next , ddim2 , mdim2 , pdim2 , "c", 0 ) ;
          set_dim_strs2 ( p->members->next , nddim , nmdim , npdim , "n", 1 ) ;
          set_dim_strs2 ( p->members->next , nddim2 , nmdim2 , npdim2 , "n", 0 ) ;
          zdex = get_index_for_coord( p->members->next , COORD_Z ) ;
          xdex = get_index_for_coord( p->members->next , COORD_X ) ;
          ydex = get_index_for_coord( p->members->next , COORD_Y ) ;
          if ( p->members->next->stag_x ) strcpy( xstag, ".TRUE." ) ; else strcpy( xstag, ".FALSE." ) ;
          if ( p->members->next->stag_y ) strcpy( ystag, ".TRUE." ) ; else strcpy( ystag, ".FALSE." ) ;
          if ( p->members->next->stag_x && p->members->next->stag_y ) {
	    maskstr = "_xystag" ;
	  } else if ( p->stag_x ) {
	    maskstr = "_xstag" ;
	  } else if ( p->stag_y ) {
	    maskstr = "_ystag" ;
	  } else {
	    maskstr = "_nostag" ;
	  }
        } else {
          grid = "grid%" ;
          set_dim_strs2 ( p , ddim , mdim , pdim , "c", 1 ) ;
          set_dim_strs2 ( p , ddim2 , mdim2 , pdim2 , "c", 0 ) ;
          set_dim_strs2 ( p , nddim , nmdim , npdim , "n", 1 ) ;
          set_dim_strs2 ( p , nddim2 , nmdim2 , npdim2 , "n", 0 ) ;
          zdex = get_index_for_coord( p , COORD_Z ) ;
          xdex = get_index_for_coord( p , COORD_X ) ;
          ydex = get_index_for_coord( p , COORD_Y ) ;
          if ( p->stag_x ) strcpy( xstag, ".TRUE." ) ; else strcpy( xstag, ".FALSE." ) ;
          if ( p->stag_y ) strcpy( ystag, ".TRUE." ) ; else strcpy( ystag, ".FALSE." ) ;
          if ( p->stag_x && p->stag_y ) {
	    maskstr = "_xystag" ;
	  } else if ( p->stag_x ) {
	    maskstr = "_xstag" ;
	  } else if ( p->stag_y ) {
	    maskstr = "_ystag" ;
	  } else {
	    maskstr = "_nostag" ;
	  }
        }

        if ( p->node_kind & FOURD )
	{
            fprintf(fp,"DO itrace = PARAM_FIRST_SCALAR, num_%s\n",p->name ) ;
            for ( d = p->ndims-1 ; d >= 3 ; d-- ) {
              strcpy(r,"") ;
              range_of_dimension( r, tx, d, p, "config_flags%" ) ;
              colon = index(tx,':') ; *colon = ',' ;
              sprintf(temp,"idim%d",d-2) ;
              strcat(moredims,",") ; strcat(moredims,temp) ;
              fprintf(fp,"  DO %s = %s\n",temp,tx) ;
            }
            fprintf(fp,"IF ( SIZE( %s%s, %d ) * SIZE( %s%s, %d ) .GT. 1 ) THEN \n", p->name,tag,xdex+1,p->name,tag,ydex+1 ) ;
        } else {
          if ( !strcmp( fcn_name, "interp_mask_land_field" ) ||
              !strcmp( fcn_name, "interp_mask_water_field" ) ) {
            fprintf(fp,"IF ( .TRUE. ) THEN \n") ;
          } else {
            fprintf(fp,"IF ( SIZE( %s%s, %d ) * SIZE( %s%s, %d ) .GT. 1 ) THEN \n", grid,vname2,xdex+1,grid,vname2,ydex+1 ) ;
          }
	}

fprintf(fp,"CALL %s (  &         \n", fcn_name ) ;

if ( !strcmp( fcn_name, "interp_mask_land_field" ) || !strcmp( fcn_name, "interp_mask_water_field" ) ) {
fprintf(fp,"  ( SIZE( %s%s , %d )*SIZE( %s%s , %d ) .GT. 1 ), & ! special argument needed because %s has bcasts in it\n",
                                                       grid,vname2,xdex+1,grid,vname2,ydex+1,fcn_name) ;
}
fprintf(fp,"                  %s%s,   &       ! CD field\n", grid, (p->node_kind & FOURD)?vname:vname2) ;
fprintf(fp,"                 %s, %s, %s, %s, %s, %s,   &         ! CD dims\n",
                ddim[0][0], ddim[0][1], ddim[1][0], ddim[1][1], ddim[2][0], ddim[2][1] ) ;
fprintf(fp,"                 %s, %s, %s, %s, %s, %s,   &         ! CD dims\n",
                mdim[0][0], mdim[0][1], mdim[1][0], mdim[1][1], mdim[2][0], mdim[2][1] ) ;
fprintf(fp,"                 %s, %s, %s, %s, %s, %s,   &         ! CD dims\n",
                pdim[0][0], pdim[0][1], pdim2[1][0], pdim2[1][1], pdim[2][0], pdim[2][1] ) ;
if ( ! (down_path  & SMOOTH_UP)  ) {
fprintf(fp,"                  ngrid%%%s,  &   ! ND field\n", vname2) ;
}
fprintf(fp,"                 %s, %s, %s, %s, %s, %s,   &         ! ND dims\n",
                nddim[0][0], nddim[0][1], nddim[1][0], nddim[1][1], nddim[2][0], nddim[2][1] ) ;
fprintf(fp,"                 %s, %s, %s, %s, %s, %s,   &         ! ND dims\n",
                nmdim[0][0], nmdim[0][1], nmdim[1][0], nmdim[1][1], nmdim[2][0], nmdim[2][1] ) ;
fprintf(fp,"                 %s, %s, %s, %s, %s, %s,   &         ! ND dims\n",
                npdim[0][0], npdim[0][1], npdim2[1][0], npdim2[1][1], npdim[2][0], npdim[2][1] ) ;

if ( ! (down_path  & SMOOTH_UP)  ) {
  if ( sw_deref_kludge == 1 ) {
fprintf(fp,"                  config_flags%%shw, ngrid%%imask%s(nims,njms),         &         ! stencil half width\n",maskstr) ;
  } else {
fprintf(fp,"                  config_flags%%shw, ngrid%%imask%s,         &         ! stencil half width\n",maskstr) ;
  }
}
fprintf(fp,"                  %s, %s,                                                &         ! xstag, ystag\n", xstag, ystag ) ;
fprintf(fp,"                  ngrid%%i_parent_start, ngrid%%j_parent_start,                     &\n") ;
fprintf(fp,"                  ngrid%%parent_grid_ratio, ngrid%%parent_grid_ratio                &\n") ;
   
        {
           char tmpstr[NAMELEN], *p1 ;
           node_t * nd, * pp  ;
           pp = NULL ;
           if ( p->node_kind & FOURD ) {
             if (  p->members->next ) {
               pp = p->members->next ;
             }
           } else {
             pp = p ;
           }
           if ( pp ) {
             strcpy( tmpstr , "" ) ;
             if        ( down_path & SMOOTH_UP ) {
               strcpy( tmpstr , pp->smoothu_aux_fields ) ;
	     } else if ( down_path & INTERP_UP ) {
               strcpy( tmpstr , pp->interpu_aux_fields ) ;
	     } else if ( down_path & FORCE_DOWN ) {
               /* by default, add the boundary and boundary tendency fields to the arg list */
               if ( ! p->node_kind & FOURD ) {
                 sprintf( tmpstr , "%s_b,%s_bt,", pp->name, pp->name )  ;
               } else {
                 sprintf( tmpstr , "%s_b,%s_bt,", p->name, p->name )  ;
               }
               strcat( tmpstr , pp->force_aux_fields ) ;
	     } else if ( down_path & INTERP_DOWN ) {
               strcpy( tmpstr , pp->interpd_aux_fields ) ;
	     }

             for ( p1 = strtok(tmpstr,",") ; p1 != NULL ; p1 = strtok(NULL,",") )
             {
               if (( nd = get_entry ( p1 , Domain.fields )) != NULL )
               {
                 if ( nd->boundary_array ) {
                   if ( sw_new_bdys ) {
                     int bdy ;
                     for ( bdy = 1 ; bdy <= 4 ; bdy++ ) {
                       if ( strcmp( nd->use , "_4d_bdy_array_" ) ) {
#if 0
                         fprintf(fp,",%s%s,ngrid%%%s%s  &\n", nd->name, bdy_indicator(bdy), nd->name, bdy_indicator(bdy) ) ;
#else
                         fprintf(fp,",dummy_%s,ngrid%%%s%s  &\n", 
                                     bdy_indicator(bdy),
                                     nd->name, bdy_indicator(bdy) ) ;
#endif
                       } else {
                         char c ;
                         c = 'i' ; if ( bdy <= 2 ) c = 'j' ;
                         fprintf(fp,",%s%s(c%cms,1,1,itrace),ngrid%%%s%s(n%cms,1,1,itrace)  &\n", 
                                           nd->name, bdy_indicator(bdy), c, 
                                           nd->name, bdy_indicator(bdy), c  ) ;
                       }
                     }
                   } else {
                     if ( strcmp( nd->use , "_4d_bdy_array_" ) ) {
                       fprintf(fp,",%s,ngrid%%%s  &\n", nd->name, nd->name ) ;
                     } else {
                       fprintf(fp,",%s(1,1,1,1,itrace),ngrid%%%s(1,1,1,1,itrace)  &\n", nd->name, nd->name ) ;
                     }
                   }
                 } else {
                   fprintf(fp,",grid%%%s,ngrid%%%s  &\n",  nd->name,  nd->name ) ;
                 }
               }
               else
               {
	         fprintf(stderr,"REGISTRY WARNING: Don't know about %s in definition of %s\n",p1,vname) ;
	       }
             }
           }
        }

fprintf(fp,"                  ) \n") ;

        if ( p->node_kind & FOURD )
        {
fprintf(fp,"ENDIF\n") ;
            for ( d = p->ndims-1 ; d >= 3 ; d-- ) {
fprintf(fp,"ENDDO\n") ;
            }
fprintf(fp,"ENDDO\n") ;
        } else {
fprintf(fp,"ENDIF\n") ; /* in_use_from_config */
        }

     }
  }

  return(0) ;
}