const getInitialTheme = () => {
     if (typeof window !== 'undefined' && window.localStorage) {
       const storedPrefs = window.localStorage.getItem('ccc-theme')
       if (typeof storedPrefs === 'string') {
         return storedPrefs
       }

       const userMedia = window.matchMedia('(prefers-color-scheme: dark)')
       if (userMedia.matches) {
         return 'dark'
       }
     }

     return 'light'
   }
   document.addEventListener('DOMContentLoaded', (event) => {
     const cookieSet = window.localStorage.getItem('theme-cookie')
     const initialTheme = getInitialTheme();
     if (typeof cookieSet !== 'string') {
       fetch('/api/v3/theme/set_theme?ccctheme=' + initialTheme)
       window.localStorage.setItem('theme-cookie', 'yes')
     }
     document.body.classList.add(initialTheme);
   })