// @flow
import passport from "@outlinewiki/koa-passport";
import { addMonths } from "date-fns";
import Koa from "koa";
import bodyParser from "koa-body";
import Router from "koa-router";
import { AuthenticationError } from "../../errors";
import auth from "../../middlewares/authentication";
import validation from "../../middlewares/validation";
import { Collection, Team, View } from "../../models";
import providers from "./providers";

const app = new Koa();
const router = new Router();

router.use(passport.initialize());

// dynamically load available authentication provider routes
providers.forEach((provider) => {
  if (provider.enabled) {
    router.use("/", provider.router.routes());
  }
});

router.get("/redirect", auth(), async (ctx) => {
  const user = ctx.state.user;
  const jwtToken = user.getJwtToken();

  if (jwtToken === ctx.params.token) {
    throw new AuthenticationError("Cannot extend token");
  }

  // ensure that the lastActiveAt on user is updated to prevent replay requests
  await user.updateActiveAt(ctx.request.ip, true);

  ctx.cookies.set("accessToken", jwtToken, {
    httpOnly: false,
    expires: addMonths(new Date(), 3),
  });

  const [team, collection, view] = await Promise.all([
    Team.findByPk(user.teamId),
    Collection.findFirstCollectionForUser(user),
    View.findOne({
      where: { userId: user.id },
    }),
  ]);

  const hasViewedDocuments = !!view;

  ctx.redirect(
    !hasViewedDocuments && collection
      ? `${team.url}${collection.url}`
      : `${team.url}/home`
  );
});

app.use(bodyParser());
app.use(validation());
app.use(router.routes());

export default app;