#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "netcdf.h"
#include "ncpathmgr.h"
#include "nclist.h"

#ifdef NETCDF_ENABLE_NCZARR
#include "zincludes.h"
#endif

#include "test_utils.h"

static unsigned chunkprod;
static unsigned dimprod;
static int* data = NULL;
static size_t datasize = 0;

static int
writedata(void)
{
    int ret = NC_NOERR;
    size_t i;

    for(i=0;i<dimprod;i++) data[i] = i;
 
    if(options->debug >= 1) {
        fprintf(stderr,"write: dimlens=%s chunklens=%s\n",
            printvector(options->rank,options->dimlens),printvector(options->rank,options->chunks));
    }
    if(options->wholechunk) {
        fprintf(stderr,"write var: wholechunk\n");
        if((ret = nc_put_vars(meta->ncid,meta->varid,options->start,options->edges,(ptrdiff_t*)options->stride,data)))
	    ERR(ret);
    } else {
        fprintf(stderr,"write vars: start=%s count=%s stride=%s\n",
            printvector(options->rank,options->start),printvector(options->rank,options->edges),printvector(options->rank,options->stride));
        if((ret = nc_put_vars(meta->ncid,meta->varid,options->start,options->edges,(ptrdiff_t*)options->stride,data)))
	    ERR(ret);
    }

    return 0;
}

static int
readdata(void)
{
    int ret = NC_NOERR;
    size_t i;
    
    memset(data,0,datasize);

    if(options->debug >= 1)
        fprintf(stderr,"read: dimlens=%s chunklens=%s\n",
            printvector(options->rank,options->dimlens),printvector(options->rank,options->chunks));
    fprintf(stderr,"read vars: start=%s count=%s stride=%s",
                printvector(options->rank,options->start),
		printvector(options->rank,options->edges),
		printvector(options->rank,options->stride));
    if(options->wholechunk)
        fprintf(stderr," wholechunk");
    fprintf(stderr,"\n");
    if((ret = nc_get_vars(meta->ncid,meta->varid,options->start,options->edges,(ptrdiff_t*)options->stride,data)))
        ERR(ret);

    for(i=0;i<dimprod;i++) {
        printf("[%u] %d\n",(unsigned)i,data[i]);
    }

    return 0;
}

static int
genodom(void)
{
    int i,ret = NC_NOERR;
    Odometer* odom = odom_new(options->rank, options->start, options->stop, options->stride, options->max);
    if(odom == NULL) {ret = NC_ENOMEM; goto done;}
    if(options->debug > 1)
        fprintf(stderr,"genodom: odom = %s\n",odom_print(odom));
    /* Iterate the odometer */
    for(i=0;odom_more(odom);odom_next(odom),i++) {
	printf("[%02d] %s\n",i,(i==0?odom_print(odom):odom_printshort(odom)));
    }        
done:
    odom_free(odom);
    return ret;
}

int
main(int argc, char** argv)
{
    int stat = NC_NOERR;
    int i;

    if((stat=getoptions(&argc,&argv))) goto done;
    if((stat=verifyoptions(options))) goto done;
    
    if((stat = getmetadata(0)))
	ERR(stat);

    dimprod = 1;
    chunkprod = 1;
    for(i=0;i<options->rank;i++) {dimprod *= options->dimlens[i]; chunkprod *= options->chunks[i];}

    datasize = dimprod*sizeof(int);
    if((data = calloc(1,datasize)) == NULL)
        {fprintf(stderr,"out of memory\n"); exit(1);}

    switch (options->op) {
    case Read: readdata(); break;
    case Write: writedata(); break;
    case Odom: genodom(); break;
    default:
	fprintf(stderr,"Unknown operation\n");
	exit(1);
    }
done:
    if(data) free(data);
    cleanup();
    return 0;
}