/* 18.8.21 fills CT_Fills */
function parse_fills(t, opts) {
  styles.Fills = [];
  var fill = {};
  t[0].match(tagregex).forEach(function (x) {
    var y = parsexmltag(x);
    switch (y[0]) {
      case '<fills':
      case '<fills>':
      case '</fills>':
        break;

      /* 18.8.20 fill CT_Fill */
      case '<fill>':
        break;
      case '</fill>':
        styles.Fills.push(fill);
        fill = {};
        break;

      /* 18.8.32 patternFill CT_PatternFill */
      case '<patternFill':
        if (y.patternType) fill.patternType = y.patternType;
        break;
      case '<patternFill/>':
      case '</patternFill>':
        break;

      /* 18.8.3 bgColor CT_Color */
      case '<bgColor':
        if (!fill.bgColor) fill.bgColor = {};
        if (y.indexed) fill.bgColor.indexed = parseInt(y.indexed, 10);
        if (y.theme) fill.bgColor.theme = parseInt(y.theme, 10);
        if (y.tint) fill.bgColor.tint = parseFloat(y.tint);


        if (y.theme && themes.themeElements && themes.themeElements.clrScheme) {
          fill.bgColor.rgb = rgb_tint(themes.themeElements.clrScheme[fill.bgColor.theme].rgb, fill.bgColor.tint || 0);
          if (opts.WTF) fill.bgColor.raw_rgb = rgb_tint(themes.themeElements.clrScheme[fill.bgColor.theme].rgb,0);
        }
        /* Excel uses ARGB strings */
        if (y.rgb) fill.bgColor.rgb = y.rgb;//.substring(y.rgb.length - 6);
        break;
      case '<bgColor/>':
      case '</bgColor>':
        break;

      /* 18.8.19 fgColor CT_Color */
      case '<fgColor':
        if (!fill.fgColor) fill.fgColor = {};
        if (y.theme) fill.fgColor.theme = parseInt(y.theme, 10);
        if (y.tint) fill.fgColor.tint = parseFloat(y.tint);

        if (y.theme && themes.themeElements && themes.themeElements.clrScheme) {
          fill.fgColor.rgb = rgb_tint(themes.themeElements.clrScheme[fill.fgColor.theme].rgb, fill.fgColor.tint || 0);
          if (opts.WTF) fill.fgColor.raw_rgb = rgb_tint(themes.themeElements.clrScheme[fill.fgColor.theme].rgb,0);
        }

        /* Excel uses ARGB strings */
        if (y.rgb) fill.fgColor.rgb = y.rgb;//.substring(y.rgb.length - 6);
        break;
      case '<fgColor/>':
      case '</fgColor>':
        break;

      default:
        if (opts.WTF) throw 'unrecognized ' + y[0] + ' in fills';
    }
  });
}

function parse_fonts(t, opts) {
  styles.Fonts = [];
  var font = {};
  t[0].match(tagregex).forEach(function (x) {
    var y = parsexmltag(x);
    switch (y[0]) {

      case '<fonts':
      case  '<fonts>':
      case '</fonts>':
        break;
      case '<font':
        break;
      case '</font>':
        styles.Fonts.push(font);
        ;
        font = {};
        break;

      case '<name':
        if (y.val) font.name = y.val;
        break;
      case '<name/>':
      case '</name>':
        break;


      case '<b/>':
        font.bold = true;
        break;
      case '<u/>':
        font.underline = true;
        break;
      case '<i/>':
        font.italic = true;
        break;
      case '<strike/>':
        font.strike = true;
        break;
      case '<outline/>':
        font.outline = true;
        break;
      case '<shadow/>':
        font.shadow = true;
        break;


      case '<sz':
        if (y.val) font.sz = y.val;
        break;
      case '<sz/>':
      case '</sz>':
        break;

      case '<vertAlign':
        if (y.val) font.vertAlign = y.val;
        break;
      case '<vertAlign/>':
      case '</vertAlign>':
        break;


      case '<color':
        if (!font.color) font.color = {};
        if (y.theme) font.color.theme = y.theme;
        if (y.tint) font.color.tint = y.tint;
        if (y.theme && themes.themeElements && themes.themeElements.clrScheme) {
          font.color.rgb = rgb_tint(themes.themeElements.clrScheme[font.color.theme].rgb, font.color.tint || 0);
        }
        if (y.rgb) font.color.rgb = y.rgb;
        break;
      case '<color/>':
      case '</color>':
        break;
    }
  });
}

function parse_borders(t, opts) {
  styles.Borders = [];
  var border = {}, sub_border = {};
  t[0].match(tagregex).forEach(function (x) {
    var y = parsexmltag(x);
    switch (y[0]) {
      case '<borders':
      case  '<borders>':
      case '</borders>':
        break;
      case '<border':
      case '<border>':
        border = {};
        if (y.diagonalUp) { border.diagonalUp = y.diagonalUp; }
        if (y.diagonalDown) { border.diagonalDown = y.diagonalDown; }
        styles.Borders.push(border);

        break;
        break;
      case '</border>':
        break;

      case '<left':
        sub_border = border.left = {};
        if (y.style) {
          sub_border.style = y.style;
        }
        break;
      case '<right':
        sub_border = border.right = {};
        if (y.style) {
          sub_border.style = y.style;
        }
        break;
      case '<top':
        sub_border = border.top = {};
        if (y.style) {
          sub_border.style = y.style;
        }
        break;
      case '<bottom':
        sub_border = border.bottom = {};
        if (y.style) {
          sub_border.style = y.style;
        }
        break;
      case '<diagonal':
        sub_border = border.diagonal = {};
        if (y.style) {
          sub_border.style = y.style;
        }
        break;

      case '<color':
        sub_border.color = {};
        if (y.theme) sub_border.color.theme = y.theme;
        if (y.theme && themes.themeElements && themes.themeElements.clrScheme) {
          sub_border.color.rgb = rgb_tint(themes.themeElements.clrScheme[sub_border.color.theme].rgb, sub_border.color.tint || 0);
        }

        if (y.tint) sub_border.color.tint = y.tint;
        if (y.rgb) sub_border.color.rgb = y.rgb;
        if (y.auto) sub_border.color.auto = y.auto;
        break;
      case '<name/>':
      case '</name>':
        break;
      default:
        break;
    }
  });

}

/* 18.8.31 numFmts CT_NumFmts */
function parse_numFmts(t, opts) {
  styles.NumberFmt = [];
  var k = keys(SSF._table);
  for (var i = 0; i < k.length; ++i) styles.NumberFmt[k[i]] = SSF._table[k[i]];
  var m = t[0].match(tagregex);
  for (i = 0; i < m.length; ++i) {
    var y = parsexmltag(m[i]);
    switch (y[0]) {
      case '<numFmts':
      case '</numFmts>':
      case '<numFmts/>':
      case '<numFmts>':
        break;
      case '<numFmt':
      {
        var f = unescapexml(utf8read(y.formatCode)), j = parseInt(y.numFmtId, 10);
        styles.NumberFmt[j] = f;
        if (j > 0) SSF.load(f, j);
      }
        break;
      default:
        if (opts.WTF) throw 'unrecognized ' + y[0] + ' in numFmts';
    }
  }
}

function write_numFmts(NF, opts) {
  var o = ["<numFmts>"];
  [
    [5, 8],
    [23, 26],
    [41, 44],
    [63, 66],
    [164, 392]
  ].forEach(function (r) {
    for (var i = r[0]; i <= r[1]; ++i) if (NF[i] !== undefined) o[o.length] = (writextag('numFmt', null, {numFmtId: i, formatCode: escapexml(NF[i])}));
  });
  if (o.length === 1) return "";
  o[o.length] = ("</numFmts>");
  o[0] = writextag('numFmts', null, { count: o.length - 2 }).replace("/>", ">");
  return o.join("");
}

/* 18.8.10 cellXfs CT_CellXfs */
function parse_cellXfs(t, opts) {
  styles.CellXf = [];
  var xf;
  t[0].match(tagregex).forEach(function (x) {
    var y = parsexmltag(x);
    switch (y[0]) {
      case '<cellXfs':
      case '<cellXfs>':
      case '<cellXfs/>':
      case '</cellXfs>':
        break;

      /* 18.8.45 xf CT_Xf */
      case '<xf':
          xf = y;
          delete xf[0];
        delete y[0];
        if (xf.numFmtId) xf.numFmtId = parseInt(xf.numFmtId, 10);
        if (xf.fillId) xf.fillId = parseInt(xf.fillId, 10);
        styles.CellXf.push(xf);
        break;
      case '</xf>':
        break;

      /* 18.8.1 alignment CT_CellAlignment */
      case '<alignment':
      case '<alignment/>':
        var alignment = {}
          if (y.vertical) { alignment.vertical = y.vertical;}
          if (y.horizontal) { alignment.horizontal = y.horizontal;}
          if (y.textRotation != undefined) { alignment.textRotation = y.textRotation; }
          if (y.indent) { alignment.indent = y.indent; }
          if (y.wrapText) { alignment.wrapText = y.wrapText; }
          xf.alignment = alignment;

        break;

      /* 18.8.33 protection CT_CellProtection */
      case '<protection':
      case '</protection>':
      case '<protection/>':
        break;

      case '<extLst':
      case '</extLst>':
        break;
      case '<ext':
        break;
      default:
        if (opts.WTF) throw 'unrecognized ' + y[0] + ' in cellXfs';
    }
  });
}

function write_cellXfs(cellXfs) {
  var o = [];
  o[o.length] = (writextag('cellXfs', null));
  cellXfs.forEach(function (c) {
    o[o.length] = (writextag('xf', null, c));
  });
  o[o.length] = ("</cellXfs>");
  if (o.length === 2) return "";
  o[0] = writextag('cellXfs', null, {count: o.length - 2}).replace("/>", ">");
  return o.join("");
}

/* 18.8 Styles CT_Stylesheet*/
var parse_sty_xml = (function make_pstyx() {
  var numFmtRegex = /<numFmts([^>]*)>.*<\/numFmts>/;
  var cellXfRegex = /<cellXfs([^>]*)>.*<\/cellXfs>/;
  var fillsRegex = /<fills([^>]*)>.*<\/fills>/;
  var bordersRegex = /<borders([^>]*)>.*<\/borders>/;

  return function parse_sty_xml(data, opts) {
    /* 18.8.39 styleSheet CT_Stylesheet */
    var t;

    /* numFmts CT_NumFmts ? */
    if ((t = data.match(numFmtRegex))) parse_numFmts(t, opts);

    /* fonts CT_Fonts ? */
    if ((t = data.match(/<fonts([^>]*)>.*<\/fonts>/))) parse_fonts(t, opts)

    /* fills CT_Fills */
    if ((t = data.match(fillsRegex))) parse_fills(t, opts);

    /* borders CT_Borders ? */
    if ((t = data.match(bordersRegex))) parse_borders(t, opts);
    /* cellStyleXfs CT_CellStyleXfs ? */

    /* cellXfs CT_CellXfs ? */
    if ((t = data.match(cellXfRegex))) parse_cellXfs(t, opts);

    /* dxfs CT_Dxfs ? */
    /* tableStyles CT_TableStyles ? */
    /* colors CT_Colors ? */
    /* extLst CT_ExtensionList ? */

    return styles;
  };
})();

var STYLES_XML_ROOT = writextag('styleSheet', null, {
  'xmlns': XMLNS.main[0],
  'xmlns:vt': XMLNS.vt
});

RELS.STY = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles";

function write_sty_xml(wb, opts) {

  if (typeof style_builder != 'undefined' && typeof 'require' != 'undefined') {
    return style_builder.toXml();
  }

  var o = [XML_HEADER, STYLES_XML_ROOT], w;
  if ((w = write_numFmts(wb.SSF)) != null) o[o.length] = w;
  o[o.length] = ('<fonts count="1"><font><sz val="12"/><color theme="1"/><name val="Calibri"/><family val="2"/><scheme val="minor"/></font></fonts>');
  o[o.length] = ('<fills count="2"><fill><patternFill patternType="none"/></fill><fill><patternFill patternType="gray125"/></fill></fills>');
  o[o.length] = ('<borders count="1"><border><left/><right/><top/><bottom/><diagonal/></border></borders>');
  o[o.length] = ('<cellStyleXfs count="1"><xf numFmtId="0" fontId="0" fillId="0" borderId="0"/></cellStyleXfs>');
  if ((w = write_cellXfs(opts.cellXfs))) o[o.length] = (w);
  o[o.length] = ('<cellStyles count="1"><cellStyle name="Normal" xfId="0" builtinId="0"/></cellStyles>');
  o[o.length] = ('<dxfs count="0"/>');
  o[o.length] = ('<tableStyles count="0" defaultTableStyle="TableStyleMedium9" defaultPivotStyle="PivotStyleMedium4"/>');

  if (o.length > 2) {
    o[o.length] = ('</styleSheet>');
    o[1] = o[1].replace("/>", ">");
  }
  return o.join("");
}