#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <vsprintf.h>
#include <command.h>
#include <gpxe/nvo.h>
#include <gpxe/dhcp.h>
#include <gpxe/settings.h>

void nvo_cmd_req() {}

extern struct nvo_block *ugly_nvo_hack;

static int show_exec ( int argc, char **argv ) {
	struct config_context dummy_context;
	char buf[256];
	int rc;

	if ( ! ugly_nvo_hack ) {
		printf ( "No non-volatile option storage available\n" );
		return 1;
	}

	if ( argc != 2 ) {
		printf ( "Syntax: %s <identifier>\n", argv[0] );
		return 1;
	}

	dummy_context.options = ugly_nvo_hack->options;
	if ( ( rc = show_setting ( &dummy_context, argv[1], buf,
				   sizeof ( buf ) ) ) != 0 ) {
		printf ( "Could not find \"%s\": %s\n",
			 argv[1], strerror ( -rc ) );
		return 1;
	}

	printf ( "%s = %s\n", argv[1], buf );
	return 0;
}

struct command show_command __command = {
	.name = "show",
	.usage = "show <identifier>\n",
	.desc = "Show stored options",
	.exec = show_exec,
};

static int set_exec ( int argc, char **argv ) {
	struct config_context dummy_context;
	int rc;

	if ( ! ugly_nvo_hack ) {
		printf ( "No non-volatile option storage available\n" );
		return 1;
	}

	if ( argc != 3 ) {
		printf ( "Syntax: %s <identifier> <value>\n",
			 argv[0] );
		return 1;
	}

	dummy_context.options = ugly_nvo_hack->options;
	if ( ( rc = set_setting ( &dummy_context, argv[1], argv[2] ) ) != 0 ) {
		printf ( "Could not set \"%s\"=\"%s\": %s\n",
			 argv[1], argv[2], strerror ( -rc ) );
		return 1;
	}
	
	if ( nvo_save ( ugly_nvo_hack ) != 0 ) {
		printf ( "Could not save options to non-volatile storage\n" );
		return 1;
	}

	return 0;
}

struct command set_command __command = {
	.name = "set",
	.usage = "set <identifier> <value>\n",
	.desc = "Set stored option",
	.exec = set_exec,
};