/*
 * Copyright 2005-2019 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.
 */

/*
 * C Implementation: grib_dump
 *
 */

#include "grib_tools.h"

grib_option grib_options[]={
        /*  {id, args, help}, on, command_line, value*/
        {"S",0,0,1,0,0},
        {"O",0,"Octet mode. WMO documentation style dump.\n",0,1,0},
        {"D",0,0,0,1,0},
        {"d",0,"Print all data values.\n",0,1,0},
        {"j",0,0,0,1,0},
        /*  {"C",0,0,0,1,0}, */   /* See ECC-234 */
        {"t",0,0,0,1,0},
        {"H",0,0,0,1,0},
        {"a",0,0,0,1,0},
        {"w:",0,0,0,1,0},
        {"s:",0,0,0,1,0},
        {"M",0,0,0,1,0},
        {"T:",0,0,0,1,0},
        {"7",0,0,0,1,0},
        {"V",0,0,0,1,0},
        {"q",0,0,1,0,0},
        {"p:","key1,key2,...",
           "\n\t\tDeclaration of keys to dump. Only those keys are dumped (not the whole message).\n",0,1,0},
        {"X:",0,0,0,1,0},
        {"x",0,0,0,1,0}
};

const char* grib_tool_description="Dump the content of a GRIB file in different formats.";
const char* grib_tool_name="grib_dump";
const char* grib_tool_usage="[options] grib_file grib_file ...";
static int json=0;
static int first_handle=1;
static int dump_keys=0;

int grib_options_count=sizeof(grib_options)/sizeof(grib_option);

/**
 * grib_dump
 * Dump the contents of a GRIB file
 */
int main(int argc, char *argv[])
{
    return grib_tool(argc,argv);
}

int grib_tool_before_getopt(grib_runtime_options* options)
{
    return 0;
}

int grib_tool_init(grib_runtime_options* options)
{
    int opt=grib_options_on("C")+grib_options_on("O")+grib_options_on("D")+grib_options_on("j");

    options->dump_mode = "default";

    if (opt > 1) {
        printf("%s: simultaneous j/O/D options not allowed\n",grib_tool_name);
        exit(1);
    }

    if (grib_options_on("j")) {
        options->dump_mode = "json";
        json=1;
    }

    /* See ECC-234
    if (grib_options_on("C")) {
        options->dump_mode = "grib_encode_C";
        if (grib_options_on("d"))
            options->dump_flags = 0;
        else
            options->dump_flags = GRIB_DUMP_FLAG_NO_DATA;
    }
     */

    if  (grib_options_on("O")) {
        options->dump_mode = "wmo";
        options->dump_flags = GRIB_DUMP_FLAG_CODED
                | GRIB_DUMP_FLAG_OCTECT
                | GRIB_DUMP_FLAG_VALUES
                | GRIB_DUMP_FLAG_READ_ONLY;
    }

    if (grib_options_on("D")) {
        options->dump_mode = "debug";
        options->dump_flags = GRIB_DUMP_FLAG_VALUES
                |  GRIB_DUMP_FLAG_READ_ONLY;
    }

    if (grib_options_on("a"))
        options->dump_flags |= GRIB_DUMP_FLAG_ALIASES;

    if (grib_options_on("t"))
        options->dump_flags |= GRIB_DUMP_FLAG_TYPE;

    if (grib_options_on("H"))
        options->dump_flags |= GRIB_DUMP_FLAG_HEXADECIMAL;

    /* In JSON mode we want to print all data values */
    if ( grib_options_on("d") || grib_options_on("j") )
        options->dump_flags |= GRIB_DUMP_FLAG_ALL_DATA;

    dump_keys=grib_options_on("p:");

    return 0;
}

int grib_tool_new_filename_action(grib_runtime_options* options,const char* file)
{
    return 0;
}

int grib_tool_new_file_action(grib_runtime_options* options,grib_tools_file* file)
{
    char tmp[1024];
    if (!options->current_infile->name) return 0;
    if (json) return 0;

    exit_if_input_is_directory(grib_tool_name, file->name);

    sprintf(tmp,"FILE: %s ",options->current_infile->name);
    if (!grib_options_on("C"))
        fprintf(stdout,"***** %s\n",tmp);

    /*
     * In debug dump mode, allow dumping of GRIB index files
     */
    if (strcmp(options->dump_mode, "debug")==0)
    {
        if (is_index_file(options->current_infile->name))
        {
            int err = 0;
            grib_context* c = grib_context_get_default();
            const char* filename = options->current_infile->name;

            err = grib_index_dump_file(stdout, filename);
            if (err) {
                grib_context_log(c, GRIB_LOG_ERROR, "%s: Could not dump index file \"%s\".\n%s\n",
                        grib_tool_name,
                        filename,
                        grib_get_error_message(err));
                exit(1);
            }
            /* Since there are no GRIB messages, we have to stop tool exiting in case there
             * are more index files
             */
            options->fail = 0;
        }
    }
    return 0;
}

int grib_tool_new_handle_action(grib_runtime_options* options, grib_handle* h)
{
    long length=0;
    int i,err=0;
    grib_context* c = h->context;
    if (grib_get_long(h,"totalLength",&length) != GRIB_SUCCESS)
        length=-9999;

    if (!options->skip) {
        if (options->set_values_count != 0)
            err=grib_set_values(h,options->set_values,options->set_values_count);
        if( err != GRIB_SUCCESS && options->fail) exit(err);
    }

    /* ECC-961 */
    if (dump_keys && options->print_keys_count > 0) {
        int errors = 0; /* true if at least one error */
        const int key_count_total = options->print_keys_count;
        int key_count_valid = 0; /* Some requested keys may be invalid */
        const char** key_names=(const char**)grib_context_malloc_clear(c, sizeof(char*)*key_count_total);
        for (i=0;i<key_count_total;i++) {
            const char* key_name = options->print_keys[i].name;
            err = grib_set_flag(h, key_name, GRIB_ACCESSOR_FLAG_DUMP);
            if (err) {
                grib_context_log(c,GRIB_LOG_ERROR, "%s: %s", key_name, grib_get_error_message(err));
                errors = 1;
            } else {
                key_names[key_count_valid]=key_name;
                key_count_valid++;
            }
        }
        grib_dump_keys(h, stdout, options->dump_mode, options->dump_flags, 0, key_names, key_count_valid);
        grib_context_free(c, key_names);
        return errors;
    }

    if(json) {
        if (!first_handle && options->handle_count>1) {
            fprintf(stdout,",\n");
        }
        if (json && first_handle) {
            fprintf(stdout,"{ \"messages\" : [\n");
            first_handle=0;
        }
    }
    else {
        char tmp[1024];
        char identifier[100];
        size_t idlen=100;
        sprintf(tmp,"MESSAGE %d ( length=%ld )",options->handle_count,length);
        if (!grib_options_on("C"))
            fprintf(stdout,"#==============   %-38s   ==============\n",tmp);
        if (!strcmp(options->dump_mode,"default")) {
            GRIB_CHECK_NOLINE(grib_get_string(h,"identifier",identifier,&idlen),0);
            printf("%s {\n",identifier);
        }
    }

    grib_dump_content(h,stdout,options->dump_mode,options->dump_flags,0);

    if (!strcmp(options->dump_mode,"default"))
        printf("}\n");
    return 0;
}

int grib_tool_skip_handle(grib_runtime_options* options, grib_handle* h)
{
    grib_handle_delete(h);
    return 0;
}

void grib_tool_print_key_values(grib_runtime_options* options,grib_handle* h)
{
    grib_print_key_values(options,h);
}

int grib_tool_finalise_action(grib_runtime_options* options)
{
    if (json) {
        if (!dump_keys) fprintf(stdout,"\n]}\n");
        else            fprintf(stdout,"\n");
    }
    return 0;
}

int grib_no_handle_action(grib_runtime_options* options, int err)
{
    if (json ){
        if (first_handle) {
            fprintf(dump_file,"{ \"messages\" : [ \n");
            first_handle=0;
        } else {
            fprintf(dump_file,",\n");
        }
    }

    fprintf(dump_file,"\t\t\"ERROR: unreadable message\"\n");
    return 0;
}