// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
import { sendEmail } from "@/email";
import { app } from "@/firebase";
import { Invite } from "@/interfaces/invite";
import { Ticket } from "@/interfaces/ticket";
import { User } from "@/interfaces/user";
import { sessionOptions } from "@/lib/session";
import {
  collection,
  doc,
  getDoc,
  getDocs,
  getFirestore,
  setDoc,
} from "firebase/firestore";
import { withIronSessionApiRoute } from "iron-session/next";
import type { NextApiRequest, NextApiResponse } from "next";
import ShortUniqueId from "short-unique-id";

const db = getFirestore(app);

export default withIronSessionApiRoute(handler, sessionOptions);

async function handler(req: NextApiRequest, res: NextApiResponse) {
  if (!req.session.user) {
    res.status(401).json({ ok: false });
    return;
  }

  if (req.method === "GET") await get(req, res);
  if (req.method === "POST") await post(req, res);
}

async function get(req: NextApiRequest, res: NextApiResponse) {
  const snapshot = await getDocs(collection(db, "invites"));

  res.status(200).json(
    snapshot.docs.map((doc) => ({
      id: doc.id,
      ...doc.data(),
    })),
  );
}

async function post(req: NextApiRequest, res: NextApiResponse) {
  const body = req.body as Invite;

  const invitedRef = await getDoc(doc(db, "users", body.to));
  if (!invitedRef.exists()) return res.status(404).json({ ok: false });

  const invitedByRef = await getDoc(doc(db, "users", body.from));
  if (!invitedByRef.exists()) return res.status(404).json({ ok: false });

  const invited = { ...invitedRef.data(), id: invitedRef.id } as User;
  const invitedBy = { ...invitedByRef.data(), id: invitedByRef.id } as User;

  try {
    await sendEmail(
      "receivedInvite",
      {
        name: invited.name,
        corporateName:
          invitedBy.type === "corporate"
            ? invitedBy.corporateInformation?.companyInformation?.name ||
              invitedBy.name
            : invitedBy.name,
      },
      [invited.email],
      "You have been invited to a group!",
    );
  } catch (e) {
    console.log(e);
  }

  const shortUID = new ShortUniqueId();
  await setDoc(doc(db, "invites", body.id || shortUID.randomUUID(8)), body);

  res.status(200).json({ ok: true });
}