/*
 * Copyright 2005-2015 ECMWF.
 *
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
 *
 * In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
 * virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
 */

/**************************************
 *  Enrico Fucile
 **************************************/


#include "grib_api_internal.h"
/*
   This is used by make_class.pl

   START_CLASS_DEF
   CLASS      = accessor
   SUPER      = grib_accessor_class_unsigned
   IMPLEMENTS = unpack_long;pack_long; value_count
   IMPLEMENTS = init
   MEMBERS=const char*    productDefinitionTemplateNumber
   MEMBERS=int            instant
   END_CLASS_DEF

 */

/* START_CLASS_IMP */

/*

Don't edit anything between START_CLASS_IMP and END_CLASS_IMP
Instead edit values between START_CLASS_DEF and END_CLASS_DEF
or edit "accessor.class" and rerun ./make_class.pl

*/

static int pack_long(grib_accessor*, const long* val,size_t *len);
static int unpack_long(grib_accessor*, long* val,size_t *len);
static int value_count(grib_accessor*,long*);
static void init(grib_accessor*,const long, grib_arguments* );
static void init_class(grib_accessor_class*);

typedef struct grib_accessor_select_step_template {
    grib_accessor          att;
/* Members defined in gen */
/* Members defined in long */
/* Members defined in unsigned */
	long nbytes;
	grib_arguments* arg;
/* Members defined in select_step_template */
	const char*    productDefinitionTemplateNumber;
	int            instant;
} grib_accessor_select_step_template;

extern grib_accessor_class* grib_accessor_class_unsigned;

static grib_accessor_class _grib_accessor_class_select_step_template = {
    &grib_accessor_class_unsigned,                      /* super                     */
    "select_step_template",                      /* name                      */
    sizeof(grib_accessor_select_step_template),  /* size                      */
    0,                           /* inited */
    &init_class,                 /* init_class */
    &init,                       /* init                      */
    0,                  /* post_init                      */
    0,                    /* free mem                       */
    0,                       /* describes himself         */
    0,                /* get length of section     */
    0,              /* get length of string      */
    &value_count,                /* get number of values      */
    0,                 /* get number of bytes      */
    0,                /* get offset to bytes           */
    0,            /* get native type               */
    0,                /* get sub_section                */
    0,               /* grib_pack procedures long      */
    0,               /* grib_pack procedures long      */
    &pack_long,                  /* grib_pack procedures long      */
    &unpack_long,                /* grib_unpack procedures long    */
    0,                /* grib_pack procedures double    */
    0,              /* grib_unpack procedures double  */
    0,                /* grib_pack procedures string    */
    0,              /* grib_unpack procedures string  */
    0,                 /* grib_pack procedures bytes     */
    0,               /* grib_unpack procedures bytes   */
    0,            /* pack_expression */
    0,              /* notify_change   */
    0,                /* update_size   */
    0,            /* preferred_size   */
    0,                    /* resize   */
    0,      /* nearest_smaller_value */
    0,                       /* next accessor    */
    0,                    /* compare vs. another accessor   */
    0,     /* unpack only ith value          */
    0,     /* unpack a subarray         */
    0,             		/* clear          */
};


grib_accessor_class* grib_accessor_class_select_step_template = &_grib_accessor_class_select_step_template;


static void init_class(grib_accessor_class* c)
{
	c->dump	=	(*(c->super))->dump;
	c->next_offset	=	(*(c->super))->next_offset;
	c->string_length	=	(*(c->super))->string_length;
	c->byte_count	=	(*(c->super))->byte_count;
	c->byte_offset	=	(*(c->super))->byte_offset;
	c->get_native_type	=	(*(c->super))->get_native_type;
	c->sub_section	=	(*(c->super))->sub_section;
	c->pack_missing	=	(*(c->super))->pack_missing;
	c->is_missing	=	(*(c->super))->is_missing;
	c->pack_double	=	(*(c->super))->pack_double;
	c->unpack_double	=	(*(c->super))->unpack_double;
	c->pack_string	=	(*(c->super))->pack_string;
	c->unpack_string	=	(*(c->super))->unpack_string;
	c->pack_bytes	=	(*(c->super))->pack_bytes;
	c->unpack_bytes	=	(*(c->super))->unpack_bytes;
	c->pack_expression	=	(*(c->super))->pack_expression;
	c->notify_change	=	(*(c->super))->notify_change;
	c->update_size	=	(*(c->super))->update_size;
	c->preferred_size	=	(*(c->super))->preferred_size;
	c->resize	=	(*(c->super))->resize;
	c->nearest_smaller_value	=	(*(c->super))->nearest_smaller_value;
	c->next	=	(*(c->super))->next;
	c->compare	=	(*(c->super))->compare;
	c->unpack_double_element	=	(*(c->super))->unpack_double_element;
	c->unpack_double_subarray	=	(*(c->super))->unpack_double_subarray;
	c->clear	=	(*(c->super))->clear;
}

/* END_CLASS_IMP */

static void init(grib_accessor* a,const long l, grib_arguments* c)
{
    grib_accessor_select_step_template* self = (grib_accessor_select_step_template*)a;
    int n = 0;

    self->productDefinitionTemplateNumber = grib_arguments_get_name(a->parent->h,c,n++);
    self->instant = grib_arguments_get_long(a->parent->h,c,n++);
}

static int    unpack_long   (grib_accessor* a, long* val, size_t *len)
{
    *val=1;
    return GRIB_SUCCESS;
}

static int pack_long(grib_accessor* a, const long* val, size_t *len)
{
    grib_accessor_select_step_template* self = (grib_accessor_select_step_template*)a;
    long productDefinitionTemplateNumber=0;
    long productDefinitionTemplateNumberNew=0;
    /*TODO chemicals*/
    grib_get_long(a->parent->h, self->productDefinitionTemplateNumber,&productDefinitionTemplateNumber);

    if (self->instant) {
        /* Going from continuous or non-continuous interval to a point-in-time (instantaneous) */
        switch (productDefinitionTemplateNumber) {
        case 8:
            productDefinitionTemplateNumberNew=0;
            break;
        case 9:
            productDefinitionTemplateNumberNew=5;
            break;
        case 10:
            productDefinitionTemplateNumberNew=6;
            break;
        case 11:
            productDefinitionTemplateNumberNew=1;
            break;
        case 12:
            productDefinitionTemplateNumberNew=2;
            break;
        case 13:
            productDefinitionTemplateNumberNew=3;
            break;
        case 14:
            productDefinitionTemplateNumberNew=4;
            break;
        case 42: /* non-EPS chemical */
            productDefinitionTemplateNumberNew=40;
            break;
        case 43: /* EPS chemical */
            productDefinitionTemplateNumberNew=41;
            break;
        case 46: /* non-EPS aerosol */
            productDefinitionTemplateNumberNew=44;
            break;
        case 47: /* EPS aerosol */
            productDefinitionTemplateNumberNew=45;
            break;
        case 0:
        case 1:
        case 2:
        case 3:
        case 4:
        case 5:
        case 6:
        case 7:
        case 15:
            productDefinitionTemplateNumberNew=productDefinitionTemplateNumber;
            break;
        default:
            productDefinitionTemplateNumberNew=productDefinitionTemplateNumber;
            break;
        }
    } else {
        /* Going from point-in-time (instantaneous) to continuous or non-continuous interval */
        switch (productDefinitionTemplateNumber) {
        case 0:
            productDefinitionTemplateNumberNew=8;
            break;
        case 1:
            productDefinitionTemplateNumberNew=11;
            break;
        case 2:
            productDefinitionTemplateNumberNew=12;
            break;
        case 3:
            productDefinitionTemplateNumberNew=13;
            break;
        case 4:
            productDefinitionTemplateNumberNew=14;
            break;
        case 5:
            productDefinitionTemplateNumberNew=9;
            break;
        case 6:
            productDefinitionTemplateNumberNew=10;
            break;
        case 40: /* non-EPS chemical */
            productDefinitionTemplateNumberNew=42;
            break;
        case 41: /* EPS chemical */
            productDefinitionTemplateNumberNew=43;
            break;
        case 44: /* non-EPS aerosol */
            productDefinitionTemplateNumberNew=46;
            break;
        case 45: /* EPS aerosol */
            productDefinitionTemplateNumberNew=47;
            break;
        case 7:
        case 8:
        case 9:
        case 10:
        case 11:
        case 12:
        case 13:
        case 14:
            productDefinitionTemplateNumberNew=productDefinitionTemplateNumber;
            break;
        default:
            productDefinitionTemplateNumberNew=productDefinitionTemplateNumber;
            break;
        }
    }

    if (productDefinitionTemplateNumber != productDefinitionTemplateNumberNew)
        grib_set_long(a->parent->h, self->productDefinitionTemplateNumber,productDefinitionTemplateNumberNew);

    return 0;
}

static int value_count(grib_accessor* a,long* c)
{
    *c=1;
    return 0;
}
