teddit/views/includes/head.pug

if(user_preferences.theme === 'auto')
  link(rel="stylesheet", type="text/css", href="/css/dark.css", media="(prefers-color-scheme: dark)")
if(user_preferences.theme === 'dark')
  link(rel="stylesheet", type="text/css", href="/css/dark.css")
if(user_preferences.theme === 'sepia')
  link(rel="stylesheet", type="text/css", href="/css/sepia.css")
link(rel="stylesheet", type="text/css", href="/css/styles.css")
link(rel="icon", type="image/png", sizes="32x32", href="/favicon.png")
meta(name="viewport", content="width=device-width, initial-scale=1.0")
-
  if(!user_preferences)
    user_preferences = {}
  
  function kFormatter(num) {
      return Math.abs(num) > 999 ? Math.sign(num)*((Math.abs(num)/1000).toFixed(1)) + 'k' : Math.sign(num)*Math.abs(num)
  }
  
  function toDateString(time) {
    let d = new Date();
    d.setTime(time*1000);
    return d.toDateString();
  }
  
  function toUTCString(time) {
    let d = new Date();
    d.setTime(time*1000);
    return d.toUTCString();
  }
  
  function secondsToMMSS(time) {
    return new Date(time * 1000).toISOString().substr(14,5)
  }
  
  function getFileExtension(url) {
    try {
      url = new URL(url)
      let pathname = url.pathname
      let file_ext = pathname.substring(pathname.lastIndexOf('.') + 1)
      if(file_ext) {
        return file_ext
      } else {
        return ''
      }
    } catch (error) {
      console.error(`Invalid url supplied to getFileExtension(). URL: ${url}`, error)
      return ''
    }
  }
  
  function cleanTitle(s) {
    if(s) {
      var re = /&(?:amp|#38|lt|#60|gt|#62|apos|#39|quot|#34);/g;
      var unescaped = {
        '&': '&',
        '&': '&',
        '&lt;': '<',
        '&#60;': '<',
        '&gt;': '>',
        '&#62;': '>',
        '&apos;': "'",
        '&#39;': "'",
        '&quot;': '"',
        '&#34;': '"'
      }
      return s.replace(re, (m) => {
        return unescaped[m]
      })
    } else {
      return ''
    }
  }