import { NextRequest, NextResponse } from "next/server";
import { getUser } from "./utils/api";

export async function middleware(req: NextRequest) {
  const cookie = req.cookies.get("session")?.value;
  const pathname = req.nextUrl.pathname;
  const response = NextResponse.next();

  if (pathname === "/login" || pathname === "/register") {
    console.log(`Route is login`);
    if (cookie) {
      console.log(`Request includes a cookie`);
      const data = await getUser(cookie);
      if (data.status === 401) {
        console.log(`Request cookie is invalid`);
        response.cookies.delete("session");
      } else if (data.status === 200) {
        console.log(`Request cookie is valid`);
        return NextResponse.redirect(new URL("/admin", req.nextUrl));
      }
    }
  }

  if (
    pathname === "/admin" ||
    pathname === "/me" ||
    pathname === "/me/profile"
  ) {
    console.log("Route is admin");
    if (!cookie) {
      console.log("No cookie found... Redirecting");
      return NextResponse.redirect(new URL("/login", req.nextUrl));
    } else {
      console.log("Cookie found... Authenticating");
      const data = await getUser(cookie);
      const res = await data.json();

      if (data.status === 401) {
        console.log("User has an invalid cookie");
        response.cookies.delete("session");
        return NextResponse.redirect(new URL("/login", req.nextUrl));
      } else if (data.status === 200) {
        console.log(
          `Request cookie is valid and the user is a valid user. (username: ${res.user.displayName})`,
        );
        response.cookies.set({
          name: "session",
          value: cookie,
          path: "/",
        });
        return response;
      }
    }
  }
}

export const config = {
  match: ["/:path*"],
};