middleware.ts

import type { NextRequest } from "next/server";
import { NextResponse } from "next/server";
import { tokenConstants, verifyToken } from "@/utils/auth";

export async function middleware(request: NextRequest) {
	// Handle Auth Pages (Prevent logged-in users from accessing login/register)
	if (request.nextUrl.pathname.startsWith("/auth")) {
		const userToken = request.cookies.get(tokenConstants.user);

		if (userToken?.value) {
			try {
				const isValid = await verifyToken(userToken.value);
				if (isValid) {
					// Redirect to user dashboard if already logged in
					return NextResponse.redirect(new URL("/", request.url));
				}
			} catch (error) {
				// If token verification fails, allow access to auth pages
				return NextResponse.next();
			}
		}
	}

	// Handle User Authentication
	if (request.nextUrl.pathname.startsWith("/user")) {
		const userToken = request.cookies.get(tokenConstants.user);

		if (!userToken?.value) {
			const loginUrl = new URL("/auth/login", request.url);
			loginUrl.searchParams.set("next", request.nextUrl.pathname);
			return NextResponse.redirect(loginUrl);
		}

		try {
			const isValid = await verifyToken(userToken.value);

			if (!isValid) {
				const loginUrl = new URL("/auth/login", request.url);
				loginUrl.searchParams.set("next", request.nextUrl.pathname);
				return NextResponse.redirect(loginUrl);
			}
		} catch (error) {
			const loginUrl = new URL("/auth/login", request.url);
			loginUrl.searchParams.set("next", request.nextUrl.pathname);
			return NextResponse.redirect(loginUrl);
		}
	}

	return NextResponse.next();
}

export const config = {
	matcher: [
		"/user/:path*",
		"/auth/:path*", // Add auth paths to the matcher
	],
};