/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
 *            drumgizmoc.cc
 *
 *  Thu Sep 16 10:23:22 CEST 2010
 *  Copyright 2010 Bent Bisballe Nyeng
 *  deva@aasimon.org
 ****************************************************************************/

/*
 *  This file is part of DrumGizmo.
 *
 *  DrumGizmo 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; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  DrumGizmo 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 DrumGizmo; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
 */
#include <iostream>

#include <config.h>
#include <getopt.h>

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

#include <hugin.hpp>

#include "drumgizmo.h"
#include "drumgizmoc.h"
#include "enginefactory.h"

#include "event.h"

static const char version_str[] = "DrumGizmo v" VERSION "\n";

static const char copyright_str[] =
    "Copyright (C) 2008-2011 Bent Bisballe Nyeng - Aasimon.org.\n"
    "This is free software.  You may redistribute copies of it under the terms "
    "of\n"
    "the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.\n"
    "There is NO WARRANTY, to the extent permitted by law.\n"
    "\n"
    "Written by Bent Bisballe Nyeng (deva@aasimon.org)\n";

static const char usage_str[] =
    "Usage: %s [options] drumkitfile\n"
    "Options:\n"
    "  -a, --async-load       Load drumkit in the background and start the "
    "engine immediately.\n"
    "  -i, --inputengine      dummy|test|jackmidi|midifile  Use said event "
    "input engine.\n"
    "  -I, --inputparms       parmlist  Set input engine parameters.\n"
    "  -o, --outputengine     dummy|alsa|jackaudio|wavfile  Use said audio "
    "output engine.\n"
    "  -O, --outputparms      parmlist  Set output engine parameters.\n"
    "  -e, --endpos           Number of samples to process, -1: infinite.\n"
#ifndef DISABLE_HUGIN
    "  -D, --debug ddd        Enable debug messages on 'ddd'; see hugin "
    "documentation for details\n"
#endif /*DISABLE_HUGIN*/
    "  -v, --version          Print version information and exit.\n"
    "  -h, --help             Print this message and exit.\n"
    "\n"
    "Input engine parameters:\n"
    "  jackmidi:  midimap=<midimapfile>\n"
    "  midifile:  file=<midifile>, speed=<tempo> (default 1.0),\n"
    "             track=<miditrack> (default -1, all tracks)\n"
    "             midimap=<midimapfile>, loop=<true|false>\n"
    "  test:      p=<hit_propability> (default 0.1)\n"
    "             instr=<instrument> (default -1, random instrument)\n"
    "             len=<seconds> (default -1, forever)\n"
    "  dummy:\n"
    "\n"
    "Output engine parameters:\n"
    "  alsa:      dev=<device> (default 'default'), frames=<frames> (default "
    "32)\n"
    "             srate=<samplerate> (default 441000)\n"
    "  wavfile:   file=<filename> (default 'output'), srate=<samplerate> "
    "(default 44100)\n"
    "  jackaudio:\n"
    "  dummy:\n"
    "\n";

CliMain::CliMain()
	: MessageReceiver(MSGRCV_UI)
{
	loading = true; // Block by default
}

CliMain::~CliMain()
{
	hug_close();
}

void CliMain::handleMessage(Message* msg)
{
	switch(msg->type())
	{
	case Message::LoadStatus:
		{
			auto ls = static_cast<LoadStatusMessage*>(msg);
			if(ls->numer_of_files_loaded == ls->number_of_files)
			{
				loading = false;
			}
		}
		break;
	default:
		break;
	}
}

int CliMain::run(int argc, char* argv[])
{
	int c;

	std::string hugin_filter;
	unsigned int hugin_flags = 0;
#ifndef DISABLE_HUGIN
	hugin_flags = HUG_FLAG_DEFAULT;
#endif /*DISABLE_HUGIN*/

	std::string outputengine;
	std::string inputengine;
	std::string iparms;
	std::string oparms;
	bool async = false;
	int endpos = -1;

	EngineFactory factory;

	int option_index = 0;
	while(1)
	{
		static struct option long_options[] = {
		    {"async-load", no_argument, 0, 'a'},
		    {"inputengine", required_argument, 0, 'i'},
		    {"inputparms", required_argument, 0, 'I'},
		    {"outputengine", required_argument, 0, 'o'},
		    {"outputparms", required_argument, 0, 'O'},
		    {"endpos", required_argument, 0, 'e'},
#ifndef DISABLE_HUGIN
		    {"debug", required_argument, 0, 'D'},
#endif /*DISABLE_HUGIN*/
		    {"version", no_argument, 0, 'v'},
		    {"help", no_argument, 0, 'h'},
		    {0, 0, 0, 0}};

		c = getopt_long(argc, argv, "hvpo:O:i:I:e:a"
#ifndef DISABLE_HUGIN
		                "D:"
#endif /*DISABLE_HUGIN*/
		                , long_options, &option_index);

		if(c == -1)
		{
			break;
		}

		switch(c)
		{
		case 'i':
			inputengine = optarg;
			if(inputengine == "help")
			{
				std::cout << "Available Input Engines = { ";
				for(auto const& name : factory.getInputEngines())
				{
					std::cout << name << " ";
				}
				std::cout << "}\n";
				return 0;
			}
			break;

#ifndef DISABLE_HUGIN
		case 'D':
			hugin_flags |= HUG_FLAG_USE_FILTER;
			hugin_filter = optarg;
			break;
#endif /*DISABLE_HUGIN*/

		case 'I':
			iparms = optarg;
			break;

		case 'o':
			outputengine = optarg;
			if(outputengine == "help")
			{
				std::cout << "Available Output Engines = { ";
				for(auto const& name : factory.getOutputEngines())
				{
					std::cout << name << " ";
				}
				std::cout << "}\n";
				return 0;
			}
			break;

		case 'O':
			oparms = optarg;
			break;

		case 'a':
			async = true;
			break;

		case 'e':
			endpos = atoi(optarg);
			break;

		case '?':
		case 'h':
			printf("%s", version_str);
			printf(usage_str, argv[0]);
			return 0;

		case 'v':
			printf("%s", version_str);
			printf("%s", copyright_str);
			return 0;

		default:
			break;
		}
	}

	hug_status_t status = hug_init(hugin_flags, HUG_OPTION_FILTER,
	                               hugin_filter.c_str(), HUG_OPTION_END);
	if(status != HUG_STATUS_OK)
	{
		printf("Error: %d\n", status);
		return 1;
	}

	DEBUG(drumgizmo, "Debug enabled.");

	if(inputengine == "")
	{
		printf("Missing input engine\n");
		return 1;
	}

	auto ie = factory.createInput(inputengine);

	if(ie == NULL)
	{
		printf("Invalid input engine: %s\n", inputengine.c_str());
		return 1;
	}

	{
		std::string parm;
		std::string val;
		bool inval = false;
		for(size_t i = 0; i < iparms.size(); i++)
		{
			if(iparms[i] == ',')
			{
				ie->setParm(parm, val);
				parm = "";
				val = "";
				inval = false;
				continue;
			}

			if(iparms[i] == '=')
			{
				inval = true;
				continue;
			}

			if(inval)
			{
				val += iparms[i];
			}
			else
			{
				parm += iparms[i];
			}
		}
		if(parm != "")
		{
			ie->setParm(parm, val);
		}
	}

	if(outputengine == "")
	{
		printf("Missing output engine\n");
		return 1;
	}

	auto oe = factory.createOutput(outputengine);

	if(oe == NULL)
	{
		printf("Invalid output engine: %s\n", outputengine.c_str());
		return 1;
	}

	{
		std::string parm;
		std::string val;
		bool inval = false;
		for(size_t i = 0; i < oparms.size(); i++)
		{
			if(oparms[i] == ',')
			{
				oe->setParm(parm, val);
				parm = "";
				val = "";
				inval = false;
				continue;
			}

			if(oparms[i] == '=')
			{
				inval = true;
				continue;
			}

			if(inval)
			{
				val += oparms[i];
			}
			else
			{
				parm += oparms[i];
			}
		}
		if(parm != "")
		{
			oe->setParm(parm, val);
		}
	}

	std::string kitfile;

	if(option_index < argc)
	{
		while(optind < argc)
		{
			if(kitfile != "")
			{
				printf("Can only handle a single kitfile.\n");
				printf(usage_str, argv[0]);
				return 1;
			}
			kitfile = argv[optind++];
		}
		printf("\n");
	}
	else
	{
		printf("Missing kitfile.\n");
		printf(usage_str, argv[0]);
		return 1;
	}

	printf("Using kitfile: %s\n", kitfile.c_str());

	DrumGizmo gizmo(oe.get(), ie.get());

	gizmo.setFrameSize(oe->getBufferSize());

	if(kitfile == "" || !gizmo.loadkit(kitfile))
	{
		printf("Failed to load \"%s\".\n", kitfile.c_str());
		return 1;
	}

	printf("Loading drumkit, this may take a while...");
	fflush(stdout);
	loading = true;
	while(async == false && loading)
	{
#ifdef WIN32
		SleepEx(500, FALSE);
#else
		usleep(500000);
#endif /*WIN32*/
		handleMessages();
		printf(".");
		fflush(stdout);
	}
	printf("done.\n");

	gizmo.setSamplerate(oe->samplerate());

	if(!gizmo.init())
	{
		printf("Failed init engine.\n");
		return 1;
	}

	gizmo.run(endpos);

	printf("Quit.\n");
	fflush(stdout);

	return 0;
}

int main(int argc, char* argv[])
{
	CliMain cli;

	cli.run(argc, argv);

	return 0;
}