'use strict';

const Crop = require('../model/crop'),
  Job = require('../model/job'),
  Area = require('../model/area'),
  ObjectId = require('mongodb').ObjectId,
  { Errors } = require('../helpers/constants'),
  { AppParamError, AppError } = require('../helpers/app_error');

async function getCrops_get(req, res) {
  const crops = await Crop.find({});
  res.json(crops);
}

async function createCrop_post(req, res) {
  const _crop = req.body;
  if (!_crop) AppParamError.throw();

  delete _crop._id;
  const crop = new Crop(_crop);
  await crop.save();
  res.json(crop);
}

async function getCrop_get(req, res) {
  const crop = await Crop.findById(req.params.crop_id);
  res.json(crop);
}

async function updateCrop_put(req, res) {
  const _crop = req.body;
  if (!_crop) AppParamError.throw();

  delete _crop._id;
  const crop = await Crop.findOneAndUpdate({ _id: req.params.crop_id }, _crop, { new: true, lean: true });
  res.json(crop);
}

async function deleteCrop(req, res) {
  const _pid = req.params.crop_id;
  const cropId = ObjectId(_pid);

  const checkRefs = [
    Job.find({
      $or: [
        { crop: cropId },
        { 'sprayAreas': { $elemMatch: { 'properties.crop': cropId } } }
      ]
    }).limit(1),
    Area.find({ 'properties.crop': cropId }).limit(1)
  ];

  const data = await Promise.all(checkRefs);
  if (data && data.filter(it => it.length).length) AppError.throw(Errors.HAS_REFERENCE);
  const crop = await Crop.deleteOne({ _id: cropId });
  res.json(crop);
}

async function search_post(req, res) {
  const _options = {};
  if (req.body.byUserId && ObjectId.isValid(req.body.byUserId))
    _options.byPuid = ObjectId(req.body.byUserId);
  else
    AppParamError.throw();

  const crops = await Crop.find(_options);
  res.json(crops || []);
}

module.exports = {
  getCrops_get, createCrop_post, getCrop_get, updateCrop_put, deleteCrop, search_post
}