/* vim: set noet nosta sw=4 ts=4 ft=c : */

/*

Copyright (c) 2011-2012, Mahlon E. Smith <mahlon@martini.nu>

All rights reserved.

Redistribution and use in source and binary forms, with or without

modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright

      notice, this list of conditions and the following disclaimer.

    * Redistributions in binary form must reproduce the above copyright

      notice, this list of conditions and the following disclaimer in the

      documentation and/or other materials provided with the distribution.

    * Neither the name of Mahlon E. Smith nor the names of his

      contributors may be used to endorse or promote products derived

      from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY

EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY

DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

#include "volta.h"

#include "db.h"

#include "lua.h"

struct v_globals v;

/*

 * Parse command line options, perform actions, and enter accept loop.

 *

 */

int

main( int argc, char *argv[] )

{

#ifdef DEBUG

	/* debugmode set at compile time?  default to crankin' up the level */

	v.debugmode = 99;

#else

	v.debugmode = 0;

#endif

	/* defaults and global initalizations */

	strcpy( v.dbname, "volta.db" );

	char create_db[30]   = "";

	v.timer.db_lastcheck = 0;

	v.timer.start        = time( NULL );

	v.timer.lines        = 0;

	v.lua                = luaV_setup();

	/* get_opt vars */

	int opt = 0;

	extern char *optarg;

	extern int opterr, optind, optopt;

	/* parse options */

	opterr = 0;

	while ( (opt = getopt( argc, argv, "c:d:f:hv" )) != -1 ) {

		switch ( opt ) {

			/* create a new cdb file from ascii input */

			case 'c':

				strncpy( create_db, optarg, sizeof(create_db) );

				break;

			/* debug */

			case 'd':

				if ( optarg[2] == '-' ) {

					argc++; argv -= 1;

					v.debugmode = 1;

				}

				sscanf( optarg, "%hu", &v.debugmode );

				break;

			/* database filename */

			case 'f':

				strncpy( v.dbname, optarg, sizeof(v.dbname) );

				break;

			/* help */

			case 'h':

				usage( argv[0] );

				return( 0 );

			/* version */

			case 'v':

				printf( "%s %s\n", PROG, VERSION );

				return( 0 );

			/* unknown option or option argument missing */

			case '?':

				switch( optopt ) {

					case 'd': /* no debug argument, default to level 1 */

						v.debugmode = 1;

						break;

					default:

						usage( argv[0] );

						return( 1 );

				}

			default:

				break;

		}

	}

	argc -= optind;

	argv += optind;

	/* create a new database if requested */

	if ( (int)strlen(create_db) > 0 ) {

		return( db_create_new( create_db ) );

	}

	/* enter stdin parsing loop */

	(void)signal( SIGINT, shutdown_handler );

	unsigned char exitval = accept_loop();

	shutdown_actions();

	return( exitval );

}

/*

 * Perform actions in preparation for a graceful shutdown.

 *

 */

void

shutdown_actions( void )

{

	lua_close( v.lua );

	cdb_free( &v.db );

	close( v.db_fd );

	report_speed();

}

/*

 * Signal handler for shutting things down.

 *

 */

void

shutdown_handler( int sig )

{

	debug( 1, LOC, "Exiting via signal %d.\n", sig );

	shutdown_actions();

	exit( 0 );

}