---
import config from "@/config/config.json";

const {
  theme_switcher,
  default_theme,
}: { theme_switcher: boolean; default_theme: string } = config.settings;
const { className }: { className?: string } = Astro.props;
---

{
  theme_switcher && (
    <div class={`theme-switcher ${className}`}>
      <input id="theme-switcher" data-theme-switcher type="checkbox" />
      <label for="theme-switcher">
        <span class="sr-only">theme switcher</span>
        <span>
          <svg
            class="absolute left-[4px] top-[4px] z-10 opacity-100 dark:opacity-0"
            viewBox="0 0 56 56"
            fill="#fff"
            height="16"
            width="16"
          >
            <path d="M30 4.6c0-1-.9-2-2-2a2 2 0 0 0-2 2v5c0 1 .9 2 2 2s2-1 2-2Zm9.6 9a2 2 0 0 0 0 2.8c.8.8 2 .8 2.9 0L46 13a2 2 0 0 0 0-2.9 2 2 0 0 0-3 0Zm-26 2.8c.7.8 2 .8 2.8 0 .8-.7.8-2 0-2.9L13 10c-.7-.7-2-.8-2.9 0-.7.8-.7 2.1 0 3ZM28 16a12 12 0 0 0-12 12 12 12 0 0 0 12 12 12 12 0 0 0 12-12 12 12 0 0 0-12-12Zm23.3 14c1.1 0 2-.9 2-2s-.9-2-2-2h-4.9a2 2 0 0 0-2 2c0 1.1 1 2 2 2ZM4.7 26a2 2 0 0 0-2 2c0 1.1.9 2 2 2h4.9c1 0 2-.9 2-2s-1-2-2-2Zm37.8 13.6a2 2 0 0 0-3 0 2 2 0 0 0 0 2.9l3.6 3.5a2 2 0 0 0 2.9 0c.8-.8.8-2.1 0-3ZM10 43.1a2 2 0 0 0 0 2.9c.8.7 2.1.8 3 0l3.4-3.5c.8-.8.8-2.1 0-2.9-.8-.8-2-.8-2.9 0Zm20 3.4c0-1.1-.9-2-2-2a2 2 0 0 0-2 2v4.9c0 1 .9 2 2 2s2-1 2-2Z" />
          </svg>
          <svg
            class="absolute left-[4px] top-[4px] z-10 opacity-0 dark:opacity-100"
            viewBox="0 0 24 24"
            fill="none"
            height="16"
            width="16"
          >
            <path
              fill="#000"
              fill-rule="evenodd"
              clip-rule="evenodd"
              d="M8.2 2.2c1-.4 2 .6 1.6 1.5-1 3-.4 6.4 1.8 8.7a8.4 8.4 0 0 0 8.7 1.8c1-.3 2 .5 1.5 1.5v.1a10.3 10.3 0 0 1-9.4 6.2A10.3 10.3 0 0 1 3.2 6.7c1-2 2.9-3.5 4.9-4.4Z"
            />
          </svg>
        </span>
      </label>
    </div>
  )
}

<script>
  import { settings } from "@/config/config.json";
  const matchMedia = window.matchMedia("(prefers-color-scheme: dark)");
  
  matchMedia.addEventListener('change', () => toggleTheme(document.querySelectorAll("[data-theme-switcher]")));

  function toggleTheme(themeSwitch: NodeListOf<Element>) {
    const defaulTheme =  settings.default_theme ==="system" ? matchMedia.matches ? "dark" : "light" : settings.default_theme;
    const currentTheme = localStorage.getItem("theme") || defaulTheme;
    const isDarkTheme = currentTheme === "dark";
    themeSwitch.forEach((sw: any) => (sw.checked = isDarkTheme));
    document.documentElement.classList.toggle("dark", isDarkTheme);
  }

  const setDarkMode = () => {
    const themeSwitch = document.querySelectorAll("[data-theme-switcher]");
    toggleTheme(themeSwitch);
    themeSwitch.forEach((sw) => {
      sw.addEventListener("click", function () {
        const defaulTheme =  settings.default_theme ==="system" ? matchMedia.matches ? "dark" : "light" : settings.default_theme;
        const currentTheme = localStorage.getItem("theme") || defaulTheme;
        const newTheme = currentTheme === "light" ? "dark" : "light";
        localStorage.setItem("theme", newTheme);
        toggleTheme(themeSwitch);
      });
    });
  };

  // Runs on initial navigation
  setDarkMode();
  // Runs on view transitions navigation
  document.addEventListener("astro:after-swap", setDarkMode);
</script>