76 lines
1.6 KiB
TypeScript
76 lines
1.6 KiB
TypeScript
import {
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createContext,
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type ReactNode,
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useContext,
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useEffect,
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useMemo,
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useState,
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} from "react";
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import type { Theme } from "@/back/types/global";
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interface ThemeProviderProps {
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children: ReactNode;
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defaultTheme?: Theme;
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storageKey?: string;
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}
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interface ThemeProviderState {
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theme: Theme;
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setTheme: (theme: Theme) => void;
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}
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const initialState: ThemeProviderState = {
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theme: "light",
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setTheme: () => {
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/* empty */
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},
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};
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const ThemeProviderContext = createContext<ThemeProviderState>(initialState);
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export function ThemeProvider({
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children,
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defaultTheme = "light",
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storageKey = "vite-ui-theme",
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}: ThemeProviderProps) {
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const [theme, setTheme] = useState<Theme>(() => {
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if (typeof localStorage === "undefined") return defaultTheme;
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const storedTheme = localStorage.getItem(storageKey) as Theme | null;
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return storedTheme ?? defaultTheme;
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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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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: (newTheme: Theme) => {
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localStorage.setItem(storageKey, newTheme);
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setTheme(newTheme);
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},
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}),
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[theme, setTheme, storageKey],
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);
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return (
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<ThemeProviderContext.Provider 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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export const useTheme = () => {
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const context = useContext(ThemeProviderContext) as
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ThemeProviderState | undefined;
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if (context === undefined) {
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throw new Error("useTheme must be used within a ThemeProvider");
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}
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return context;
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};
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