export const NS = {
  OPF: 'http://www.idpf.org/2007/opf',
  OPS: 'http://www.idpf.org/2007/ops',
  DC: 'http://purl.org/dc/elements/1.1/',
  DAISY: 'http://www.daisy.org/z3986/2005/ncx/',
  XHTML: 'http://www.w3.org/1999/xhtml',
  SVG: 'http://www.w3.org/2000/svg',
  XLINK: 'http://www.w3.org/1999/xlink'
}

export const tidyOptions = {
  indent: 'auto',
  'numeric-entities': 'yes',
  'output-xhtml': 'yes',
  'alt-text': 'Image',
  wrap: '0',
  quiet: 'yes',
  newline: 'LF',
  'tidy-mark': 'no',
  'show-body-only': 'auto'
}

export const containerXml = `<?xml version="1.0" encoding="UTF-8"?>
<container version="1.0" xmlns="urn:oasis:names:tc:opendocument:xmlns:container">
  <rootfiles>
    <rootfile full-path="OEBPS/content.opf" media-type="application/oebps-package+xml"/>
  </rootfiles>
</container>
`

export const unicode = {
  NO_BREAK_SPACE: '\u00a0',
  WORD_JOINER: '\u2060',
  HAIR_SPACE: '\u200a',
  ZERO_WIDTH_SPACE: '\ufeff',
  SHY_HYPHEN: '\u00ad'
}

export const youtubeKey = 'AIzaSyCF1taix0lTr7-e_XBZazIXfAr8IvxTJhA'