Files
wtr/components/ui/theme-toggle.tsx

51 lines
1.6 KiB
TypeScript

"use client";
import { useEffect, useState } from "react";
import { Moon, Sun, SunMoon } from "lucide-react";
import { Button } from "@/components/ui/button";
import { useI18n } from "@/lib/i18n";
export function ThemeToggle() {
const [mounted, setMounted] = useState(false);
const [isDark, setIsDark] = useState(false);
const { t } = useI18n();
useEffect(() => {
const root = document.documentElement;
const media = window.matchMedia("(prefers-color-scheme: dark)");
const syncSystemTheme = () => {
if (!window.localStorage.getItem("wtr:theme")) {
root.classList.toggle("dark", media.matches);
setIsDark(media.matches);
}
};
const animationFrame = window.requestAnimationFrame(() => {
setIsDark(root.classList.contains("dark"));
setMounted(true);
});
media.addEventListener("change", syncSystemTheme);
return () => {
window.cancelAnimationFrame(animationFrame);
media.removeEventListener("change", syncSystemTheme);
};
}, []);
const toggleTheme = () => {
const nextIsDark = !isDark;
document.documentElement.classList.toggle("dark", nextIsDark);
window.localStorage.setItem("wtr:theme", nextIsDark ? "dark" : "light");
setIsDark(nextIsDark);
};
return (
<Button
variant="icon"
type="button"
aria-label={!mounted ? t("theme.change") : isDark ? t("theme.light") : t("theme.dark")}
onClick={toggleTheme}
>
{!mounted ? <SunMoon className="size-4" /> : isDark ? <Sun className="size-4" /> : <Moon className="size-4" />}
</Button>
);
}