gdq-archive/frontend/util/session.ts

import { withIronSession } from 'next-iron-session';
import type { Session } from 'next-iron-session';
import { IncomingMessage, ServerResponse } from 'http';
import { NextApiResponse, NextPageContext } from 'next';
import { DocumentContext } from 'next/document';

export interface IncomingMessageWithSession extends IncomingMessage {
  body: any;
  session: Session
}

export type HandlerWithDocumentContextAndSession<T> = (
  ctx: DocumentContext & {
    req: IncomingMessageWithSession
  },
) => Promise<T>;

export type HandlerWithPageContextAndSession<T> = (
  ctx: NextPageContext & {
    req: IncomingMessageWithSession
  },
) => Promise<T>;

export type HandlerWithReqResAndSession<T> = (
  req: IncomingMessageWithSession,
  res: NextApiResponse
) => Promise<T>;

export type HandlerWithSession<T, U> =
  T extends IncomingMessageWithSession
    ? HandlerWithReqResAndSession<U>
    : T extends NextPageContext
      ? HandlerWithPageContextAndSession<U>
      : HandlerWithDocumentContextAndSession<U>;

export type SessionHandler<R = any, A = any, O = any> = (req: IncomingMessageWithSession, res: NextApiResponse<O>, ...args: Array<A>) => R;

export default function withSession<R = any, A = any, O = any>(handler: SessionHandler<R, A, O>) {
  return withIronSession(handler, {
    cookieName: 'gdq-archive',
    cookieOptions: {
      // the next line allows to use the session in non-https environements like
      // Next.js dev mode (http://localhost:3000)
      secure: process.env.NODE_ENV === 'production',
      httpOnly: true,
    },
    password: process.env.SECRET_PASSWORD || '0'.repeat(32),
  });
}