middleware.ts

import { NextRequest, NextResponse } from "next/server";
import authConfig from "./auth.config"
import NextAuth from "next-auth"
export const { auth: authMiddleware } = NextAuth(authConfig)

export async function middleware(req: NextRequest) {
    if ((await isAdminAuthenticated(req)) === false) {
      return new NextResponse("Unauthorized", {
        status: 401,
        headers: { "WWW-Authenticate": "Basic" },
      });
    }
  }

  async function isAdminAuthenticated(req: NextRequest) {
    const authHeader =
      req.headers.get("authorization") || req.headers.get("Authorization");
  
    if (authHeader == null) return false;
  
    const [username, password] = Buffer.from(authHeader.split(" ")[1], "base64")
      .toString()
      .split(":");
  
    if (
      username === process.env.ADMIN_USERNAME &&
      password === process.env.ADMIN_PASSWORD
    ) {
      return true;
    }
  
    return false;
  }
  
  export const config = {
    middleware: ["authMiddleware", "middleware"],
    matcher: "/admin/:path*",
  };