const mongoose = require('mongoose').set('debug', false)
const Schema = mongoose.Schema;

mongoose.Promise = global.Promise;
mongoose.level = "F";

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

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

// Resolving error Unknown modifier: $pushAll
mongoose.plugin(schema => {
  schema.options.usePushEach = true
});

const CitySchema = new Schema({
  _id: {
    type: Number,
  },
  istat: {
    type: String,
  },
  comune: {
    type: String
  },
  prov: {
    type: String,
    maxlength: 3,
  },
  reg: {
    type: String,
    maxlength: 3,
  },
  pref: {
    type: String,
  },
  cap: {
    type: String,
    maxlength: 6,
  },
  abitanti: {
    type: Number,
  },
  country: {
    type: String,
    maxlength: 2,
  },
});

CitySchema.pre('save', async function (next) {
  if (this.isNew) {
    const myrec = await City.findOne().limit(1).sort({_id:-1});
    if (!!myrec) {
      if (myrec._doc._id === 0)
        this._id = 1;
      else
        this._id = myrec._doc._id + 1;

    } else {
      this._id = 1;
    }
  }

  next();
});


CitySchema.statics.findByCity = function (mycity) {

  let myregexp = new RegExp(mycity.trim().replace(' ', '|'), 'ig');

  const query = [
    { $match: {comune: { $regex: myregexp } } },
    { $sort: { descr: 1 } }
  ];

  return City
    .aggregate(query)
    .then((arrrec) => {
      return arrrec
    })

};

CitySchema.statics.getFieldsForSearch = function () {
  return [{ field: 'comune', type: tools.FieldType.string },
    { field: 'prov', type: tools.FieldType.string },
    { field: 'reg', type: tools.FieldType.string },
    { field: 'pref', type: tools.FieldType.number },
    { field: 'cap', type: tools.FieldType.number },
    ]
};

CitySchema.statics.executeQueryTable = function (idapp, params) {
  params.fieldsearch = this.getFieldsForSearch();
  return tools.executeQueryTable(this, 0, params);
};

CitySchema.statics.findAllIdApp = async function (idapp) {
  const myfind = {};

  return City.find(myfind);
};


const City = mongoose.model('City', CitySchema);

module.exports = { City };