const express = require("express");
const Event = require("../models/Event");
const auth = require("../middleware/auth");

const router = express.Router();

// Get all events
router.get("/", async (req, res) => {
  try {
    const events = await Event.find();
    res.json(events);
  } catch (err) {
    console.error(err.message);
    res.status(500).send("Server error");
  }
});

// Create an event
router.post("/", auth, async (req, res) => {
  const { title, description, date, location } = req.body;

  try {
    const newEvent = new Event({
      title,
      description,
      date,
      location,
    });

    const event = await newEvent.save();
    res.json(event);
  } catch (err) {
    console.error(err.message);
    res.status(500).send("Server error");
  }
});

// RSVP to an event
router.put("/rsvp/:id", auth, async (req, res) => {
  try {
    const event = await Event.findById(req.params.id);
    if (!event) {
      return res.status(404).json({ msg: "Event not found" });
    }

    // Check if the user has already RSVPed
    if (
      event.participants.filter(
        (participant) => participant.toString() === req.user.id,
      ).length > 0
    ) {
      return res.status(400).json({ msg: "Already RSVPed" });
    }

    event.participants.unshift(req.user.id);

    await event.save();

    res.json(event.participants);
  } catch (err) {
    console.error(err.message);
    res.status(500).send("Server error");
  }
});

module.exports = router;