nzambello.dev/src/components/ThemeIcon.astro

---
---

<button id="themeToggle" title="Toggle theme">
  <svg width="30px" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24">
    <path
      class="sun"
      fill-rule="evenodd"
      d="M12 17.5a5.5 5.5 0 1 0 0-11 5.5 5.5 0 0 0 0 11zm0 1.5a7 7 0 1 0 0-14 7 7 0 0 0 0 14zm12-7a.8.8 0 0 1-.8.8h-2.4a.8.8 0 0 1 0-1.6h2.4a.8.8 0 0 1 .8.8zM4 12a.8.8 0 0 1-.8.8H.8a.8.8 0 0 1 0-1.6h2.5a.8.8 0 0 1 .8.8zm16.5-8.5a.8.8 0 0 1 0 1l-1.8 1.8a.8.8 0 0 1-1-1l1.7-1.8a.8.8 0 0 1 1 0zM6.3 17.7a.8.8 0 0 1 0 1l-1.7 1.8a.8.8 0 1 1-1-1l1.7-1.8a.8.8 0 0 1 1 0zM12 0a.8.8 0 0 1 .8.8v2.5a.8.8 0 0 1-1.6 0V.8A.8.8 0 0 1 12 0zm0 20a.8.8 0 0 1 .8.8v2.4a.8.8 0 0 1-1.6 0v-2.4a.8.8 0 0 1 .8-.8zM3.5 3.5a.8.8 0 0 1 1 0l1.8 1.8a.8.8 0 1 1-1 1L3.5 4.6a.8.8 0 0 1 0-1zm14.2 14.2a.8.8 0 0 1 1 0l1.8 1.7a.8.8 0 0 1-1 1l-1.8-1.7a.8.8 0 0 1 0-1z"
    ></path>
    <path
      class="moon"
      fill-rule="evenodd"
      d="M16.5 6A10.5 10.5 0 0 1 4.7 16.4 8.5 8.5 0 1 0 16.4 4.7l.1 1.3zm-1.7-2a9 9 0 0 1 .2 2 9 9 0 0 1-11 8.8 9.4 9.4 0 0 1-.8-.3c-.4 0-.8.3-.7.7a10 10 0 0 0 .3.8 10 10 0 0 0 9.2 6 10 10 0 0 0 4-19.2 9.7 9.7 0 0 0-.9-.3c-.3-.1-.7.3-.6.7a9 9 0 0 1 .3.8z"
    ></path>
  </svg>
</button>

<style>
  #themeToggle {
    border: 0;
    background: none;
  }
  .sun {
    fill: #fff;
  }
  .moon {
    fill: transparent;
  }

  [data-theme='light'] .moon,
  :root:not([data-theme='dark']) .moon {
    fill: #000;
  }
  [data-theme='light'] .sun,
  :root:not([data-theme='dark']) .sun {
    fill: transparent;
  }

  @media only screen and (prefers-color-scheme: dark) {
    :root:not([data-theme]) .sun {
      fill: #fff;
    }
  }

  [data-theme='dark'] :global(.sun) {
    fill: #fff;
  }
</style>

<script>
  const theme = (() => {
    if (typeof localStorage !== 'undefined' && localStorage.getItem('theme')) {
      return localStorage.getItem('theme')
    }
    if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
      return 'dark'
    }
    return 'light'
  })()

  if (theme === 'light') {
    document.documentElement.setAttribute('data-theme', 'light')
  } else {
    document.documentElement.setAttribute('data-theme', 'dark')
  }

  window.localStorage.setItem('theme', theme || 'dark')

  const handleToggleClick = () => {
    const element = document.documentElement
    const currentTheme = element.getAttribute('data-theme')
    const themeToSet = currentTheme === 'light' ? 'dark' : 'light'
    document.documentElement.setAttribute('data-theme', themeToSet)

    localStorage.setItem('theme', themeToSet)
  }

  document.getElementById('themeToggle')?.addEventListener('click', handleToggleClick)
</script>