49 lines
1.5 KiB
TypeScript
49 lines
1.5 KiB
TypeScript
"use client";
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import { useEffect, useState } from "react";
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import { Moon, Sun } from "lucide-react";
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type Theme = "light" | "dark";
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export default function ThemeToggle() {
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const [theme, setTheme] = useState<Theme>("light");
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useEffect(() => {
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const saved = localStorage.getItem("write-theme");
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const nextTheme: Theme = saved === "dark" ? "dark" : "light";
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setTheme(nextTheme);
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if (nextTheme === "dark") {
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document.documentElement.dataset.theme = "dark";
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} else {
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delete document.documentElement.dataset.theme;
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}
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}, []);
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const toggleTheme = () => {
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const nextTheme: Theme = theme === "dark" ? "light" : "dark";
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setTheme(nextTheme);
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localStorage.setItem("write-theme", nextTheme);
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if (nextTheme === "dark") {
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document.documentElement.dataset.theme = "dark";
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} else {
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delete document.documentElement.dataset.theme;
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}
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};
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const isDark = theme === "dark";
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const Icon = isDark ? Sun : Moon;
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return (
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<button
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type="button"
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onClick={toggleTheme}
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className="mb-3 flex w-full items-center justify-between rounded-md border border-line px-3 py-2 text-[12px] text-muted transition-colors hover:bg-bg hover:text-accent"
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title={isDark ? "切换到浅色模式" : "切换到夜间模式"}
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aria-label={isDark ? "切换到浅色模式" : "切换到夜间模式"}
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>
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<span>{isDark ? "浅色模式" : "夜间模式"}</span>
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<Icon size={14} />
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</button>
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);
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}
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