78 lines
1.8 KiB
TypeScript
78 lines
1.8 KiB
TypeScript
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import { createContext, useEffect, useMemo, useState } from "react";
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import secureLocalStorageImport from "react-secure-storage";
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type Theme = "dark" | "light" | "system";
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type ThemeProviderProps = {
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children: React.ReactNode;
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defaultTheme?: Theme;
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storageKey?: string;
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};
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type ThemeProviderState = {
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theme: Theme;
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setTheme: (theme: Theme) => void;
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};
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const secureLocalStorage = (secureLocalStorageImport as any)?.default ?? secureLocalStorageImport;
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const initialState: ThemeProviderState = {
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theme: "system",
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setTheme: () => null,
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};
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export const ThemeProviderContext = createContext<ThemeProviderState>(initialState);
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export const ThemeProvider = ({
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children,
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defaultTheme = "system",
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storageKey = "vite-ui-theme",
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...props
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}: ThemeProviderProps) => {
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const [theme, setThemeState] = useState<Theme>(() => {
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try {
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const stored = secureLocalStorage?.getItem?.(storageKey);
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return (stored as Theme) || defaultTheme;
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} catch {
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return defaultTheme;
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}
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});
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useEffect(() => {
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const root = window.document.documentElement;
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root.classList.remove("light", "dark");
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if (theme === "system") {
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const systemTheme = window.matchMedia("(prefers-color-scheme: dark)").matches
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? "dark"
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: "light";
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root.classList.add(systemTheme);
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return;
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}
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root.classList.add(theme);
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}, [theme]);
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const value = useMemo(
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() => ({
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theme,
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setTheme: (nextTheme: Theme) => {
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try {
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secureLocalStorage?.setItem?.(storageKey, nextTheme);
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} catch {
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// fallback silencioso
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}
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setThemeState(nextTheme);
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},
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}),
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[theme, storageKey]
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);
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return (
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<ThemeProviderContext.Provider {...props} value={value}>
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{children}
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</ThemeProviderContext.Provider>
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);
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};
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