Added Themes

src/components/theme-provider.tsx

@@ -0,0 +1,86 @@
+import { createContext, useContext, useEffect, useState } from "react";
+
+type Theme =
+	| "radius"
+	| "cyberpunk"
+	| "bluelight"
+	| "midnight"
+	| "system";
+const themes: Theme[] = [
+	"radius",
+	"cyberpunk",
+	"bluelight",
+	"midnight",
+	"system",
+];
+type ThemeProviderProps = {
+	children: React.ReactNode;
+	defaultTheme?: Theme;
+	storageKey?: string;
+};
+type ThemeProviderState = {
+	themes: Theme[];
+	theme: Theme;
+	setTheme: (theme: Theme) => void;
+};
+
+const initialState: ThemeProviderState = {
+	themes: themes,
+	theme: "system",
+	setTheme: () => null,
+};
+
+const ThemeProviderContext = createContext<ThemeProviderState>(initialState);
+
+export function ThemeProvider({
+	children,
+	defaultTheme = "system",
+	storageKey = "theme",
+	...props
+}: ThemeProviderProps) {
+	const [theme, setTheme] = useState<Theme>(
+		() => (localStorage.getItem(storageKey) as Theme) || defaultTheme,
+	);
+
+	useEffect(() => {
+		const root = window.document.documentElement;
+
+		themes.forEach((theme) => root.classList.remove(theme));
+
+		if (theme === "system") {
+			const systemTheme = window.matchMedia("(prefers-color-scheme: dark)")
+				.matches
+				? "default"
+				: "bluelight";
+
+			root.classList.add(systemTheme);
+			return;
+		}
+
+		root.classList.add(theme);
+	}, [theme]);
+
+	const value = {
+		theme,
+		themes,
+		setTheme: (theme: Theme) => {
+			localStorage.setItem(storageKey, theme);
+			setTheme(theme);
+		},
+	};
+
+	return (
+		<ThemeProviderContext.Provider {...props} value={value}>
+			{children}
+		</ThemeProviderContext.Provider>
+	);
+}
+// eslint-disable-next-line
+export const useTheme = () => {
+	const context = useContext(ThemeProviderContext);
+
+	if (context === undefined)
+		throw new Error("useTheme must be used within a ThemeProvider");
+
+	return context;
+};