clippingkk / web / #1085

import { NextResponse } from 'next/server'

import type { NextRequest } from 'next/server'

import { COOKIE_TOKEN_KEY, USER_ID_KEY } from './constants/storage'

export function middleware(request: NextRequest) {

  const url = new URL(request.url)

  if (!url.pathname.startsWith('/auth')) {

    return NextResponse.next()

  }

  if (!request.cookies.has(COOKIE_TOKEN_KEY)) {

    return NextResponse.next()

  }

  // If going to the authentication page but already having a token and UID, just redirect to my home page.

  const uid = request.cookies.get(USER_ID_KEY)?.value

  if (!uid) {

    return NextResponse.next()

  }

  if (uid && !url.pathname.includes('callback') && url.searchParams.has('clean')) {

    request.cookies.delete(COOKIE_TOKEN_KEY)

    request.cookies.delete(USER_ID_KEY)

    return NextResponse.next()

  }

  const nextUrl = new URL(`/dash/${uid}/home`, request.url)

  nextUrl.protocol = url.protocol

  nextUrl.host = url.host

  nextUrl.port = url.port

  return NextResponse.redirect(nextUrl)

}