'use strict';

const Job = require('../model/job'),
  Pilot = require('../model/pilot'),
  ObjectId = require('mongodb').ObjectId,
  userCtl = require('../controllers/user'),
  cache = require('../helpers/mem_cache'),
  utils = require('../helpers/utils'),
  { Errors } = require('../helpers/constants'),
  { AppParamError, AppError } = require('../helpers/app_error');

async function createPilot_post(req, res) { // Save/Create a pilot
  const _pilot = req.body;
  delete _pilot._id;

  await userCtl.ensureParentExists(_pilot);

  const newPilot = new Pilot(_pilot);
  const pilot = await newPilot.save();
  res.json(pilot);
}

async function getPilot_get(req, res) {
  const cId = req.params.pilot_id;
  if (!ObjectId.isValid(cId)) AppParamError.throw();

  const pilot = await Pilot.findOne({ _id: ObjectId(cId) }, null, { lean: true });
  res.json(pilot);
}

async function updatePilot_put(req, res) {
  const _pilot = req.body;
  if (!_pilot || !utils.isObjectId(_pilot._id)) AppParamError.throw();

  if (utils.isBlank(_pilot.username) && !utils.isBlank(_pilot.password))
    _pilot.password = undefined;

  if (!_pilot.hasOwnProperty('active'))
    _pilot.active = true;

  const pilot = await Pilot.findOneAndUpdate({ _id: ObjectId(_pilot._id) }, _pilot, { runValidators: true, new: true, lean: true });
  res.json(pilot);
}

async function deletePilot(req, res) {
  const _id = req.params.pilot_id;
  if (!utils.isObjectId(_id)) AppParamError.throw();

  const nOfJobs = await Job.countDocuments({ 'operator': ObjectId(_id) });
  if (nOfJobs) AppError.throw(Errors.HAS_REFERENCE);

  const pilot = await Pilot.findById(ObjectId(_id));
  if (pilot)
    await pilot.removeFull();

  cache.delete(_id);
  res.json({ ok: true });
}

async function search_post(req, res) {
  if (!req.body || !utils.isObjectId(req.body.byUserId)) AppParamError.throw();

  const pilots = await Pilot.find({ parent: ObjectId(req.body.byUserId), markedDelete: { $ne: true } }, "-password", { lean: true });
  res.json(pilots);
}

module.exports = {
  createPilot_post, getPilot_get, updatePilot_put, deletePilot, search_post
}