/*
 * (C) Copyright 2005- 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.
 */

/**************************************
 *  This pertains to GRIB edition 2
 **************************************/

#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=const char*    productDefinitionTemplateNumberInternal
   MEMBERS=const char* grib2LocalSectionNumber
   MEMBERS=const char* type
   MEMBERS=const char* stream
   MEMBERS=const char* the_class
   MEMBERS=const char* eps
   MEMBERS=const char* stepType
   MEMBERS=const char* derivedForecast
   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_local_definition
{
    grib_accessor att;
    /* Members defined in gen */
    /* Members defined in long */
    /* Members defined in unsigned */
    long nbytes;
    grib_arguments* arg;
    /* Members defined in local_definition */
    const char* productDefinitionTemplateNumber;
    const char* productDefinitionTemplateNumberInternal;
    const char* grib2LocalSectionNumber;
    const char* type;
    const char* stream;
    const char* the_class;
    const char* eps;
    const char* stepType;
    const char* derivedForecast;
} grib_accessor_local_definition;

extern grib_accessor_class* grib_accessor_class_unsigned;

static grib_accessor_class _grib_accessor_class_local_definition = {
    &grib_accessor_class_unsigned,          /* super                     */
    "local_definition",                     /* name                      */
    sizeof(grib_accessor_local_definition), /* 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 array procedures string    */
    0,                                      /* grib_unpack array 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          */
    0,                                      /* clone accessor          */
};


grib_accessor_class* grib_accessor_class_local_definition = &_grib_accessor_class_local_definition;


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_string_array      = (*(c->super))->pack_string_array;
    c->unpack_string_array    = (*(c->super))->unpack_string_array;
    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;
    c->make_clone             = (*(c->super))->make_clone;
}

/* END_CLASS_IMP */

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

    self->grib2LocalSectionNumber                 = grib_arguments_get_name(hand, c, n++);
    self->productDefinitionTemplateNumber         = grib_arguments_get_name(hand, c, n++);
    self->productDefinitionTemplateNumberInternal = grib_arguments_get_name(hand, c, n++);
    self->type                                    = grib_arguments_get_name(hand, c, n++);
    self->stream                                  = grib_arguments_get_name(hand, c, n++);
    self->the_class                               = grib_arguments_get_name(hand, c, n++);
    self->eps                                     = grib_arguments_get_name(hand, c, n++);
    self->stepType                                = grib_arguments_get_name(hand, c, n++);
    self->derivedForecast                         = grib_arguments_get_name(hand, c, n++);
}

static int unpack_long(grib_accessor* a, long* val, size_t* len)
{
    grib_accessor_local_definition* self = (grib_accessor_local_definition*)a;

    return grib_get_long(grib_handle_of_accessor(a), self->grib2LocalSectionNumber, val);
}

static int pack_long(grib_accessor* a, const long* val, size_t* len)
{
    grib_accessor_local_definition* self         = (grib_accessor_local_definition*)a;
    grib_handle* hand                            = grib_handle_of_accessor(a);
    long productDefinitionTemplateNumber         = -1;
    long productDefinitionTemplateNumberInternal = -1;
    long productDefinitionTemplateNumberNew      = -1;
    long grib2LocalSectionNumber                 = -1;
    long type                                    = -1;
    long stream                                  = -1;
    long the_class                               = -1;
    long eps                                     = -1;
    long chemical                                = -1;
    long aerosol                                 = -1;
    long chemical_distfn                         = -1;
    long chemical_srcsink                        = -1;
    long aerosol_optical                         = -1;
    char stepType[15]                            = {0,};
    size_t slen               = 15;
    int localDefinitionNumber = *val;
    int isInstant             = 0;
    int tooEarly              = 0;
    long derivedForecast      = -1;
    long editionNumber        = 0;

    if (grib_get_long(hand, "editionNumber", &editionNumber) == GRIB_SUCCESS) {
        Assert(editionNumber != 1);
    }

    if (grib_get_long(hand, self->productDefinitionTemplateNumber, &productDefinitionTemplateNumber) != GRIB_SUCCESS)
        tooEarly = 1;
    grib_get_long(hand, self->productDefinitionTemplateNumberInternal, &productDefinitionTemplateNumberInternal);
    grib_get_long(hand, self->type, &type);
    grib_get_long(hand, self->stream, &stream);
    grib_get_long(hand, self->the_class, &the_class);
    grib_get_long(hand, self->eps, &eps);
    grib_get_string(hand, self->stepType, stepType, &slen);
    if (!strcmp(stepType, "instant"))
        isInstant = 1;
    grib_get_long(hand, self->grib2LocalSectionNumber, &grib2LocalSectionNumber);
    grib_get_long(hand, "is_chemical", &chemical);
    grib_get_long(hand, "is_chemical_distfn", &chemical_distfn);
    grib_get_long(hand, "is_chemical_srcsink", &chemical_srcsink);
    grib_get_long(hand, "is_aerosol", &aerosol);
    grib_get_long(hand, "is_aerosol_optical", &aerosol_optical);
    if (chemical == 1 && aerosol == 1) {
        grib_context_log(a->context, GRIB_LOG_ERROR, "Parameter cannot be both chemical and aerosol!");
        return GRIB_ENCODING_ERROR;
    }

    if (grib2_is_PDTN_EPS(productDefinitionTemplateNumber))
        eps = 1;

    switch (localDefinitionNumber) {
        case 0:
        case 300:
            productDefinitionTemplateNumberNew = productDefinitionTemplateNumber;
            break;

        case 500:
            productDefinitionTemplateNumberNew = 0;
            break;

        case 1:  /* MARS labelling */
        case 36: /* MARS labelling for long window 4Dvar system */
        case 40: /* MARS labeling with domain and model (for LAM) */
        case 42: /* LC-WFV: Wave forecast verification */
            if (isInstant) {
                /* type=em || type=es  */
                if (type == 17) {
                    productDefinitionTemplateNumberNew = 2;
                    derivedForecast                    = 0;
                }
                else if (type == 18) {
                    productDefinitionTemplateNumberNew = 2;
                    derivedForecast                    = 4;
                    /* eps or enda or elda or ewla */
                }
                else if (eps == 1 || stream == 1030 || stream == 1249 || stream == 1250) {
                    productDefinitionTemplateNumberNew = 1;
                }
                else {
                    productDefinitionTemplateNumberNew = 0;
                }
            }
            else {
                /* type=em || type=es */
                if (type == 17) {
                    productDefinitionTemplateNumberNew = 12;
                    derivedForecast                    = 0;
                }
                else if (type == 18) {
                    productDefinitionTemplateNumberNew = 12;
                    derivedForecast                    = 4;
                    /* eps or enda or elda or ewla */
                }
                else if (eps == 1 || stream == 1030 || stream == 1249 || stream == 1250) {
                    productDefinitionTemplateNumberNew = 11;
                }
                else {
                    productDefinitionTemplateNumberNew = 8;
                }
            }
            break;
        case 41: /* EFAS: uses post-processing templates */
            if (isInstant) {
                if (eps == 1)
                    productDefinitionTemplateNumberNew = 71;
                else
                    productDefinitionTemplateNumberNew = 70;
            }
            else {
                /* non-instantaneous: accum etc */
                if (eps == 1)
                    productDefinitionTemplateNumberNew = 73;
                else
                    productDefinitionTemplateNumberNew = 72;
            }
            break;

        case 15: /* Seasonal forecast data */
        case 16: /* Seasonal forecast monthly mean data */
        case 12: /* Seasonal forecast monthly mean data for lagged systems */
        case 18: /* Multianalysis ensemble data */
        case 26: /* MARS labelling or ensemble forecast data */
        case 30: /* Forecasting Systems with Variable Resolution */
            if (isInstant) {
                productDefinitionTemplateNumberNew = 1;
            }
            else {
                productDefinitionTemplateNumberNew = 11;
            }
            break;

        case 5:  /* Forecast probability data */
        case 7:  /* Sensitivity data */
        case 9:  /* Singular vectors and ensemble perturbations */
        case 11: /* Supplementary data used by the analysis */
        case 14: /* Brightness temperature */
        case 20: /* 4D variational increments */
        case 21: /* Sensitive area predictions */
        case 23: /* Coupled atmospheric, wave and ocean means */
        case 24: /* Satellite Channel Number Data */
        case 25:
        case 28:  /* COSMO local area EPS */
        case 38:  /* 4D variational increments for long window 4Dvar system */
        case 39:  /* 4DVar model errors for long window 4Dvar system */
        case 192: /* Multiple ECMWF local definitions */
            if (isInstant) {
                productDefinitionTemplateNumberNew = 0;
            }
            else {
                productDefinitionTemplateNumberNew = 8;
            }
            break;

        default:
#ifdef DEBUG
            /* In test & development mode, fail so we remember to adjust PDTN */
            grib_context_log(a->context, GRIB_LOG_ERROR,
                             "grib_accessor_local_definition: Invalid localDefinitionNumber %d", localDefinitionNumber);
            return GRIB_ENCODING_ERROR;
#endif
            /* ECC-1253: Do not fail in operations. Leave PDTN as is */
            productDefinitionTemplateNumberNew = productDefinitionTemplateNumber;
            break;
    }

    /* Adjust for atmospheric chemical constituents */
    if (chemical == 1) {
        if (eps == 1) {
            if (isInstant) {
                productDefinitionTemplateNumberNew = 41;
            }
            else {
                productDefinitionTemplateNumberNew = 43;
            }
        }
        else {
            if (isInstant) {
                productDefinitionTemplateNumberNew = 40;
            }
            else {
                productDefinitionTemplateNumberNew = 42;
            }
        }
    }
    /* Adjust for atmospheric chemical constituents based on a distribution function */
    if (chemical_distfn == 1) {
        if (eps == 1) {
            if (isInstant) {
                productDefinitionTemplateNumberNew = 58;
            }
            else {
                productDefinitionTemplateNumberNew = 68;
            }
        }
        else {
            if (isInstant) {
                productDefinitionTemplateNumberNew = 57;
            }
            else {
                productDefinitionTemplateNumberNew = 67;
            }
        }
    }

    /* Adjust for atmospheric chemical constituents with source or sink */
    if (chemical_srcsink == 1) {
        if (eps == 1) {
            if (isInstant) {
                productDefinitionTemplateNumberNew = 77;
            }
            else {
                productDefinitionTemplateNumberNew = 79;
            }
        }
        else {
            if (isInstant) {
                productDefinitionTemplateNumberNew = 76;
            }
            else {
                productDefinitionTemplateNumberNew = 78;
            }
        }
    }

    /* Adjust for aerosols */
    if (aerosol == 1) {
        if (eps == 1) {
            if (isInstant) {
                productDefinitionTemplateNumberNew = 45;
            }
            else {
                /*productDefinitionTemplateNumberNew = 47;  This PDT is deprecated */
                productDefinitionTemplateNumberNew = 85;
            }
        }
        else {
            if (isInstant) {
                productDefinitionTemplateNumberNew = 48; /*44 is deprecated*/
            }
            else {
                productDefinitionTemplateNumberNew = 46;
            }
        }
    }
    /* Adjust for optical properties of aerosol */
    if (aerosol_optical == 1) {
        if (eps == 1) {
            if (isInstant) {
                productDefinitionTemplateNumberNew = 49;
            }
        }
        else {
            if (isInstant) {
                productDefinitionTemplateNumberNew = 48;
            }
        }
    }

    if (productDefinitionTemplateNumber != productDefinitionTemplateNumberNew) {
        if (a->context->debug) {
            fprintf(stderr, "ECCODES DEBUG grib_accessor_local_definition: ldNumber=%d, newPDTN=%ld\n",
                   localDefinitionNumber, productDefinitionTemplateNumberNew);
        }
        if (tooEarly)
            grib_set_long(hand, self->productDefinitionTemplateNumberInternal, productDefinitionTemplateNumberNew);
        else
            grib_set_long(hand, self->productDefinitionTemplateNumber, productDefinitionTemplateNumberNew);
    }
    if (derivedForecast >= 0)
        grib_set_long(hand, self->derivedForecast, derivedForecast);

    grib_set_long(hand, self->grib2LocalSectionNumber, *val);

    return 0;
}

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