import { getSessionData } from '$lib/utils/services/auth/session';
import { getHasCioCookies } from '$lib/utils/functions/cookies';
import { applyCspExtensions } from '$lib/utils/csp';
import { type Handle, redirect } from '@sveltejs/kit';
import { isPublicApiRoute, isPublicRoute } from '$lib/utils/functions/routes/isPublicRoute';
import { ROUTE } from '$lib/utils/constants/routes';

export const handle: Handle = async (args) => {
  const { event } = args;
  const sessionData = await getSessionData(event.cookies);

  if (sessionData) {
    event.locals = sessionData;
  }

  let response: Response;

  if (event.url.pathname.includes('/api')) {
    response = await handleAPIRoutes(args);
  } else {
    response = await handlePagesRoutes(args);
  }

  return applyCspExtensions(response);
};

const handlePagesRoutes: Handle = async ({ event, resolve }) => {
  const { pathname } = event.url;
  const hasCioCookie = getHasCioCookies(event.cookies);

  if (isPublicRoute(pathname)) {
    return resolve(event);
  }

  if (!event?.locals?.user && !hasCioCookie) {
    console.log('no user and no cio cookie, redirecting to login');
    const shouldAddRedirectParam = !pathname.includes(ROUTE.LOGOUT);
    const fullPath = pathname + event.url.search;
    const redirectPath = shouldAddRedirectParam
      ? `${ROUTE.LOGIN}?redirect=${encodeURIComponent(fullPath)}`
      : ROUTE.LOGIN;

    return redirect(303, redirectPath);
  }

  return resolve(event);
};

const handleAPIRoutes: Handle = async ({ event, resolve }) => {
  const { pathname } = event.url;

  if (isPublicApiRoute(pathname)) {
    return resolve(event);
  }

  if (!event.locals.user) {
    redirect(303, '/login');
  }

  return resolve(event);
};