/**

 * SysEx to SMF convertor

 * Copyright © 2020 František Kučera (Frantovo.cz, GlobalCode.info)

 *

 * 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 3 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, see <http://www.gnu.org/licenses/>.

 */

#include <iostream>

#include <sstream>

#include <smf.h>

/**

 * Translates System Exclusive (SysEx) message (binary not HEX) from standard input to a Standard MIDI file (SMF).

 * The file path must be passed as a CLI argument.

 * 

 * Usage examples:

 *     cat test.syx | ./sysex2smf test.mid

 * 

 * Dependencies:

 *     libsmf (in Debian-based distributions do: apt install libsmf-dev)

 * 

 * @param argc

 * @param argv

 * @return 

 */

int main(int argc, char**argv) {

	int exitCode = 0;

	if (argc == 2) {

		smf_t* smf = smf_new();

		smf_track_t* track = smf_track_new();

		smf_add_track(smf, track);

		std::stringstream data;

		for (char ch; std::cin.read(&ch, 1).good();) {

			data.put(ch);

		}

		// TODO: review the (void*) – it works but…

		smf_event_t* event = smf_event_new_from_pointer((void*) data.str().c_str(), data.tellp());

		smf_track_add_event_pulses(track, event, 0);

		// TODO: check whether file exists?

		int res = smf_save(smf, argv[1]);

		if (res) {

			std::cerr << "Error: Unable to save MIDI file: " << argv[1] << " Error code: " << res << std::endl;

			exitCode = 1;

		}

		smf_delete(smf);

	} else {

		std::cerr << "Usage: " << argv[0] << " 'output-file.mid'" << std::endl;

		exitCode = 1;

	}

	return exitCode;

}