const express = require('express');
const router = express.Router();

const tools = require('../tools/general');
const server_constants = require('../tools/server_constants');

const { authenticate } = require('../middleware/authenticate');

const { Booking } = require('../models/booking');
const { MyEvent } = require('../models/myevent');
const { Operator } = require('../models/operator');
const { Where } = require('../models/where');

const { ObjectID } = require('mongodb');

const sendemail = require('../sendemail');

const _ = require('lodash');

function sendNotif(res, idapp, user, recbooking) {
  //++Todo: tools.sendNotificationToUser

  // Send Email
  if (recbooking.booked)
    sendemail.sendEmail_Booking(res, user.lang, user.email, user, idapp, recbooking);
  else
    sendemail.sendEmail_CancelBooking(res, user.lang, user.email, user, idapp, recbooking);
}

router.post('/', authenticate, (req, res) => {
  // tools.mylog('INIZIO - booking');
  // tools.mylog('req.body', req.body);
  const myrec = _.pick(req.body, tools.allfieldBooking());
  const id = myrec._id;
  const fieldtochange = _.pick(myrec, tools.allfieldBookingChange());

  tools.mylog('crea Booking');
  const booking = new Booking(myrec);

  const check = tools.checkUserOk(booking.userId, req.user._id);
  if (check.exit) return check.ret;

  // console.log('fieldtochange', fieldtochange);

  // Modify:
  return Booking.findOne({ id_bookedevent: id })
    .then(trovato => {
      // console.log('trovato', trovato);
      if (trovato) {
        return Booking.findOneAndUpdate({ id_bookedevent: id }, { $set: fieldtochange }, {
          new: true,
          upsert: true
        }).then((recbooking) => {
          // tools.mylog('booking:', booking);
          // tools.mylog('already exist');
          sendNotif(res, myrec.idapp, req.user, recbooking);
          res.send({ code: server_constants.RIS_CODE_OK, msg: '', id: recbooking._id });
        });
      } else {
        // save to database a new record
        tools.mylog('save to database a new record');
        booking._id = new ObjectID();
        return booking.save().then((writeresult) => {
          let idobj = writeresult._id;

          Booking.findById(idobj)
            .then((recbooking) => {
              sendNotif(res, myrec.idapp, req.user, recbooking);
              res.send({ code: server_constants.RIS_CODE_OK, msg: '', id: recbooking._id });
            });
        });
      }
    })
});

router.delete('/:id/:notify/:idapp', authenticate, (req, res) => {
  console.log('DELETE Booking');
  const id = req.params.id;
  const notify = req.params.notify;
  const idapp = req.params.idapp;

  Booking.findByIdAndRemove(id).then((recbooking) => {
    if (!recbooking) {
      return res.status(404).send();
    }

    if (notify === '1')
      sendNotif(res, idapp, req.user, recbooking);

    tools.mylog('DELETED ', recbooking.descr, recbooking._id);

    res.send({ code: server_constants.RIS_CODE_OK, msg: '', id: recbooking._id });

  }).catch((e) => {
    res.status(400).send();
  });
});


router.get('/:userId/:idapp/:sall', authenticate, (req, res) => {
  const userId = req.params.userId;
  const idapp = req.params.idapp;
  const sall = req.params.sall;
  // var category = req.params.category;

  // tools.mylog('GET BOOKINGS : ', req.params);

  if (!ObjectID.isValid(userId)) {
    return res.status(404).send();
  }

  if (userId !== String(req.user._id)) {
    // I'm trying to write something not mine!
    return res.status(404).send({ code: server_constants.RIS_CODE_TODO_CREATING_NOTMYUSER });
  }

  // Extract all the todos of the userId only
  Booking.findAllByUserIdAndIdApp(userId, idapp, sall).then((bookedevent) => {

    return MyEvent.findAllIdApp(idapp)
      .then((eventlist) => {
        return Operator.findAllIdApp(idapp)
          .then((operators) => {

            return Where.findAllIdApp(idapp)
              .then((wheres) => {

                res.send({ bookedevent, eventlist, operators, wheres });
              })
          })
      })

  }).catch((e) => {
    console.log(e);
    res.status(400).send(e);
  });

});


module.exports = router;