#include <iostream>
#include <cstdlib>
#include <getopt.h>

#include <glibmm.h>

#include "common.h"

using namespace std;
using namespace ARDOUR;
using namespace SessionUtils;


static void usage (int status)
{
	// help2man compatible format (standard GNU help-text)
	printf (UTILNAME " - create a new empty session from the commandline.\n\n");
	printf ("Usage: " UTILNAME " [ OPTIONS ] <session-dir> [session-name]\n\n");
	printf ("Options:\n\
  -h, --help                 display this help and exit\n\
  -s, --samplerate <rate>    samplerate to use (default 48000)\n\
  -V, --version              print version information and exit\n\
\n");

	printf ("\n\
This tool creates a new empty Ardour session.\n\
\n\
If the session-name is unspecified, the sesion-dir-name is used.\n\
If specified, the tool expects a session-name without .ardour\n\
file-name extension.\n\
\n");

	printf ("\n\
Examples:\n\
" UTILNAME " -s 44100 /tmp/TestSession TestSession\n\
\n");

	printf ("Report bugs to <http://tracker.ardour.org/>\n"
	        "Website: <http://ardour.org/>\n");
	::exit (status);
}

int main (int argc, char* argv[])
{
	int sample_rate = 48000;

	const char *optstring = "hs:V";

	const struct option longopts[] = {
		{ "help",       0, 0, 'h' },
		{ "samplerate", 1, 0, 's' },
		{ "version",    0, 0, 'V' },
	};

	int c = 0;
	while (EOF != (c = getopt_long (argc, argv,
					optstring, longopts, (int *) 0))) {
		switch (c) {
			case 's':
				{
					const int sr = atoi (optarg);
					if (sr >= 8000 && sr <= 192000) {
						sample_rate = sr;
					} else {
						fprintf(stderr, "Invalid Samplerate\n");
					}
				}
				break;

			case 'V':
				printf ("ardour-utils version %s\n\n", VERSIONSTRING);
				printf ("Copyright (C) GPL 2017 Robin Gareus <robin@gareus.org>\n");
				exit (0);
				break;

			case 'h':
				usage (0);
				break;

			default:
				usage (EXIT_FAILURE);
				break;
		}
	}

	std::string snapshot_name;

	if (optind + 2 == argc) {
		snapshot_name = argv[optind+1];
	} else if (optind + 1 == argc) {
		snapshot_name = Glib::path_get_basename (argv[optind]);
	} else  {
		usage (EXIT_FAILURE);
	}

	if (snapshot_name.empty ()) {
		fprintf(stderr, "Error: Invalid empty session/snapshot name.\n");
		::exit (EXIT_FAILURE);
	}

	/* all systems go */

	SessionUtils::init();
	Session* s = 0;

	s = SessionUtils::create_session (argv[optind], snapshot_name, sample_rate);

	/* save is implicit when creating a new session */

	if (s) {
		std::cout << "Created session in '" << s->path () <<"'" << std::endl;
	}

	SessionUtils::unload_session (s);
	SessionUtils::cleanup();

	return 0;
}