// subtitleeditor -- a tool to create or edit subtitle
//
// https://kitone.github.io/subtitleeditor/
// https://github.com/kitone/subtitleeditor/
//
// Copyright @ 2005-2018, kitone
//
// 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; either version 3 of the License, or
// (at your option) any later version.
//
// 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 <extension/subtitleformat.h>
#include <utility.h>

/*
// SBV format :

0:00:03.490,0:00:07.430
>> FISHER: All right. So, let's begin.
This session is: Going Social

0:00:07.430,0:00:11.600
with the YouTube APIs. I am
Jeff Fisher,

0:00:11.600,0:00:14.009
and this is Johann Hartmann,
we're presenting today.

0:00:14.009,0:00:15.889
[pause]
*/

class SBV : public SubtitleFormatIO {
 public:
  void open(Reader &file) {
    Glib::RefPtr<Glib::Regex> re_time = Glib::Regex::create(
        "^(\\d):(\\d+):(\\d+)\\.(\\d+),(\\d):(\\d+):(\\d+)\\.(\\d+)");

    int start[4], end[4];
    Subtitles subtitles = document()->subtitles();

    Glib::ustring line;

    while (file.getline(line)) {
      // Read the subtitle times
      if (re_time->match(line)) {
        std::vector<Glib::ustring> group = re_time->split(line);

        start[0] = utility::string_to_int(group[1]);
        start[1] = utility::string_to_int(group[2]);
        start[2] = utility::string_to_int(group[3]);
        start[3] = utility::string_to_int(group[4]);

        end[0] = utility::string_to_int(group[5]);
        end[1] = utility::string_to_int(group[6]);
        end[2] = utility::string_to_int(group[7]);
        end[3] = utility::string_to_int(group[8]);

        Glib::ustring text;
        // Read the text lines
        while (file.getline(line) && !line.empty()) {
          if (!text.empty())
            text += '\n';
          text += line;
        }

        // Append a subtitle
        Subtitle sub = subtitles.append();

        sub.set_text(text);
        sub.set_start_and_end(
            SubtitleTime(start[0], start[1], start[2], start[3]),
            SubtitleTime(end[0], end[1], end[2], end[3]));
      } else {
        se_dbg_msg(SE_DBG_PLUGINS, "can not match time line: '%s'",
                   line.c_str());
      }
    }
  }

  void save(Writer &file) {
    for (Subtitle sub = document()->subtitles().get_first(); sub; ++sub) {
      Glib::ustring text = sub.get_text();

      file.write(Glib::ustring::compose(
          "%1,%2\n"
          "%3\n\n",
          time_to_sbv(sub.get_start()), time_to_sbv(sub.get_end()), text));
    }
  }

  Glib::ustring time_to_sbv(const SubtitleTime &t) {
    return build_message("%i:%02i:%02i.%03i", t.hours(), t.minutes(),
                         t.seconds(), t.mseconds());
  }
};

class SBVPlugin : public SubtitleFormat {
 public:
  SubtitleFormatInfo get_info() {
    SubtitleFormatInfo info;
    info.name = "SBV";
    info.extension = "sbv";
    info.pattern = "\\d:\\d{2}:\\d{2}\\.\\d{3},\\d:\\d{2}:\\d{2}\\.\\d{3}\\R";

    return info;
  }

  SubtitleFormatIO *create() {
    SBV *sf = new SBV();
    return sf;
  }
};

REGISTER_EXTENSION(SBVPlugin)
