//=============================================================================
//  MuseScore
//  Linux Music Score Editor
//
//  Copyright (C) 2002-2007 Werner Schweer and others
//
//  This program is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License version 2.
//
//  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, write to the Free Software
//  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//=============================================================================

#include <stdio.h>
#include <unistd.h>
#include <QFile>

#include "xmlwriter.h"
#include "midifile.h"

static const char versionString[] = "0.1";

bool debugMode = false;

//---------------------------------------------------------
//   printVersion
//---------------------------------------------------------

static void printVersion()
      {
      printf("This is smf2xml version %s\n", versionString);
      }

//---------------------------------------------------------
//   usage
//---------------------------------------------------------

static void usage()
      {
      printVersion();
      printf("Usage: smf2xml [args] [infile] [outfile]\n");
      printf("   args:\n"
             "      -v      print version\n"
             "      -d      debug mode\n"
            );
      }

//---------------------------------------------------------
//   main
//---------------------------------------------------------

int main(int argc, char* argv[])
      {
      int c;
      while ((c = getopt(argc, argv, "vd")) != EOF) {
            switch (c) {
                  case 'v':
                        printVersion();
                        return 0;
                  case 'd':
                        debugMode = true;
                        break;
                  default:
                        usage();
                        return -1;
                  }
            }
      QIODevice* in = 0;
      QIODevice* out = 0;

      switch (argc - optind) {
            case 2:
                  out = new QFile(argv[1 + optind]);
                  if (!out->open(QIODevice::WriteOnly)) {
                        fprintf(stderr, "Cannot open output file <%s>: %s\n", argv[2], strerror(errno));
                        return -3;
                        }
            case 1:
                  in = new QFile(argv[0 + optind]);
                  if (!in->open(QIODevice::ReadOnly)) {
                        fprintf(stderr, "Cannot open input file <%s>: %s\n", argv[1], strerror(errno));
                        return -4;
                        }
                  break;
            case 0:
                  break;
            default:
                  usage();
                  return -2;
                  break;
            }
      if (in == 0) {
            in = new QFile;
            ((QFile*)in)->open(stdin, QIODevice::ReadOnly);
            }
      if (out == 0) {
            out = new QFile;
            ((QFile*)out)->open(stdout, QIODevice::WriteOnly);
            }

      MidiFile mf;
      mf.read(in);

      XmlWriter xml(out);
      xml.header();
      xml.stag("SMF");
      xml.tag("division", mf.division());
      xml.tag("format", mf.format());

      for (MidiTrack* t : mf.tracks()) {
            xml.stag("Track");
            for (auto i = t->events().begin(); i != t->events().end(); ++i) {
                  switch (i->second.type()) {
                        case MidiEventType::NOTEOFF:
                              xml.tagE(QString("NoteOff tick=\"%1\" c=\"%2\" a=\"%3\" b=\"%4\"")
                                 .arg(i->first)
                                 .arg(int(i->second.channel()), 0, 10)
                                 .arg(int(i->second.dataA()), 2, 16)
                                 .arg(int(i->second.dataB()), 2, 16)
                                 );
                              break;
                        case MidiEventType::NOTEON:
                              xml.tagE(QString("NoteOn  tick=\"%1\" c=\"%2\" a=\"%3\" b=\"%4\"")
                                 .arg(i->first)
                                 .arg(int(i->second.channel()), 0, 10)
                                 .arg(int(i->second.dataA()), 2, 16)
                                 .arg(int(i->second.dataB()), 2, 16)
                                 );
                              break;
                        case MidiEventType::CONTROLLER:
                              xml.tagE(QString("Ctrl    tick=\"%1\" c=\"%2\" a=\"%3\" b=\"%4\"")
                                 .arg(i->first)
                                 .arg(int(i->second.channel()), 0, 10)
                                 .arg(int(i->second.dataA()), 2, 16)
                                 .arg(int(i->second.dataB()), 2, 16)
                                 );
                              break;
                        case MidiEventType::PROGRAM:
                              xml.tagE(QString("Program tick=\"%1\" c=\"%2\" a=\"%3\"")
                                 .arg(i->first)
                                 .arg(int(i->second.channel()), 0, 10)
                                 .arg(int(i->second.dataA()), 2, 16)
                                 );
                              break;
                        default:
                              printf("unknown event\n");
                              xml.tagE(QString("Event   tick=\"%1\" t=\"%2\" c=\"%3\" a=\"%4\" b=\"%5\"")
                                 .arg(i->first)
                                 .arg(int(i->second.type()), 2, 16)
                                 .arg(int(i->second.channel()), 0, 10)
                                 .arg(int(i->second.dataA()), 2, 16)
                                 .arg(int(i->second.dataB()), 2, 16)
                                 );
                              break;
                        }
                  }
            xml.etag();
            }

      xml.etag();
      delete in;
      delete out;

      return 0;
      }