'use strict';

const { AppParamError, AppError } = require('../helpers/app_error');

const Product = require('../model/product'),
  Job = require('../model/job'),
  ObjectId = require('mongodb').ObjectId,
  { Errors } = require('../helpers/constants');

async function getProducts_get(req, res) {
  const products = await Product.find({});
  res.json(products);
}

async function createProduct_post(req, res) {
  const _product = req.body;
  delete _product._id;
  const product = new Product(_product);

  const savedProduct = await product.save();
  res.json(savedProduct);
}

async function getProduct_get(req, res) {
  const product = await Product.findById(req.params.product_id);
  res.json(product);
}

async function updateProduct_put(req, res) {
  const _product = req.body;
  delete _product._id;
  const product = await Product.findOneAndUpdate({ _id: req.params.product_id }, _product, { new: true, lean: true });
  res.json(product);
}

async function deleteProduct(req, res) {
  const _pid = req.params.product_id;

  const jobs = await Job.find({ products: { $elemMatch: { 'product': ObjectId(_pid) } } }).limit(1);
  if (jobs && jobs.length) AppError.throw(Errors.HAS_REFERENCE);

  const product = await Product.deleteOne({ _id: _pid });
  res.json(product);
}

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 products = await Product.find(_options, null, { lean: true });
  res.json(products || []);
}

module.exports = {
  getProducts_get, createProduct_post, getProduct_get, updateProduct_put, deleteProduct, search_post
}