/* edit_config.c  --  eurephiadm command:
 *                    Sets, deletes or prints a config setting in the database
 *
 *  GPLv2 - Copyright (C) 2008  David Sommerseth <dazo@users.sourceforge.net>
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; version 2
 *  of the License.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 */

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

#include <eurephia_nullsafe.h>
#include <eurephia_context.h>
#include <eurephia_log.h>
#include <eurephia_values_struct.h>
#include <eurephia_values.h>
#include <eurephiadb_session_struct.h>
#include <eurephiadb_driver.h>

#define MODULE "eurephiadm::config"
#include "../argparser.h"

void help_EditConfig() {
        printf("%s - Edit eurephia configuration\n\n", MODULE);
        printf("  The config command let you add, change or delete\n"
               "  configuration parameters in the eurephia database\n"
               "  in an easy way.  To be allowed to do so, you must\n"
               "  have been granted 'config' access.\n\n");

        printf("  The following arguments are accepted:\n"
               "        -l | --list                   List all parameters in db\n"
               "        -s | --set <key> <value>      Add/change a parameter.\n"
               "        -D | --delete <key>           Remove the parameter.\n"
               "\n"
               "  If no arguments is given, you can give a key name, and the\n"
               "  associated value will be printed.\n\n"
               "        eurephiadm config <key>\n\n");

        printf("  The command will exit with exit code 0 on success.\n\n");
}

// Reusing this function for the --list argument
int cmd_ShowCfg(eurephiaCTX *ctx, eurephiaSESSION *sess, eurephiaVALUES *cfg, int argc, char **argv);

int cmd_EditConfig(eurephiaCTX *ctx, eurephiaSESSION *sess, eurephiaVALUES *cfg, int argc, char **argv) {
        int rc = 0, i = 0;
        e_options editargs[] = {
                {"--set", "-s", 2},
                {"--delete", "-D", 1},
                {"--list", "-l", 0},
                {"--help", "-h", 0},
                {NULL, NULL, 0}
        };

        assert((ctx != NULL) && (ctx->dbc != NULL) && (ctx->dbc->config != NULL));

        for( i = 1; i < argc; i++ ) {
                if( *argv[i] != '-' ) {
                        break;
                }
                switch( eurephia_getopt(&i, argc, argv, editargs) ) {
                case 's':
                        fprintf(stderr, "Setting config parameter '%s' to '%s'\n", optargs[0], optargs[1]);
                        rc = eDBadminConfigSet(ctx, optargs[0], optargs[1]);
                        break;

                case 'D':
                        fprintf(stderr, "Deleting config parameter '%s'\n", optargs[0]);
                        rc = eDBadminConfigDelete(ctx, optargs[0]);
                        break;

                case 'l':
                        cmd_ShowCfg(ctx, NULL, NULL, 0, NULL);
                        return 0;

                case 'h':
                        help_EditConfig();

                default:
                        return 1;
                }
        }

        if( argc == 2 ) {
                char *val = eGet_value(ctx->dbc->config, argv[1]);
                fprintf(stdout, "%s\n", (val != NULL ? val : ""));
                rc = 1;
        } else if( argc == 1 ){
                fprintf(stderr, "No config action performed\n");
                rc = 1;
        }

        if( rc != 1 ) {
                fprintf(stderr, "Failed to update the configuration\n");
        }
        return (rc != 1);
}