'use strict';

var _vttparser = require('./vttparser');

var Cues = {

  newCue: function newCue(track, startTime, endTime, captionScreen) {
    var row;
    var cue;
    var indenting;
    var indent;
    var text;
    var VTTCue = window.VTTCue || window.TextTrackCue;

    for (var r = 0; r < captionScreen.rows.length; r++) {
      row = captionScreen.rows[r];
      indenting = true;
      indent = 0;
      text = '';

      if (!row.isEmpty()) {
        for (var c = 0; c < row.chars.length; c++) {
          if (row.chars[c].uchar.match(/\s/) && indenting) {
            indent++;
          } else {
            text += row.chars[c].uchar;
            indenting = false;
          }
        }
        //To be used for cleaning-up orphaned roll-up captions
        row.cueStartTime = startTime;

        // Give a slight bump to the endTime if it's equal to startTime to avoid a SyntaxError in IE
        if (startTime === endTime) {
          endTime += 0.0001;
        }

        cue = new VTTCue(startTime, endTime, (0, _vttparser.fixLineBreaks)(text.trim()));

        if (indent >= 16) {
          indent--;
        } else {
          indent++;
        }

        // VTTCue.line get's flakey when using controls, so let's now include line 13&14
        // also, drop line 1 since it's to close to the top
        if (navigator.userAgent.match(/Firefox\//)) {
          cue.line = r + 1;
        } else {
          cue.line = r > 7 ? r - 2 : r + 1;
        }
        cue.align = 'left';
        // Clamp the position between 0 and 100 - if out of these bounds, Firefox throws an exception and captions break
        cue.position = Math.max(0, Math.min(100, 100 * (indent / 32) + (navigator.userAgent.match(/Firefox\//) ? 50 : 0)));
        track.addCue(cue);
      }
    }
  }

};

module.exports = Cues;