nodejs-rigorous/lib/models/ObjectCrud/mongoose/read_many.js

Rigorous Framework

"use strict";

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }

function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

var _require = require('../../../factory/RigorousError/index'),
    RigorousError = _require.RigorousError,
    errorTypes = _require.errorTypes;

var mongoose = require('mongoose');

var callbackResult = require('./callback_result');

var patch = require('./patch');

var helper_format_checker = require('../../../helpers/h_format_checker');

var rigorousConfig = require('../../../config');
/**
 * Smart Efficient Pagination: https://arpitbhayani.me/techie/fast-and-efficient-pagination-in-mongodb.html
 * (Skip is to CPU intensive: https://stackoverflow.com/questions/5539955/how-to-paginate-with-mongoose-in-node-js/23640287#23640287)
 */


function checkPaginationFilter(objectFilter) {
  if (!helper_format_checker.isNil(objectFilter._id)) {
    throw new RigorousError('This field is not needed in multiple result (do findOne) ! So do not use it because it is used in query of pagination');
  }

  return objectFilter;
}

function findResults(collectionName, query, maxNbResult, reverse, params) {
  var selectAttributesReturned = params.selectAttributesReturned;
  var virtualReturnedFields = params.virtualReturnedFields;
  return new Promise(function (resolve, reject) {
    try {
      var op = mongoose.model(collectionName).find(query).select(selectAttributesReturned).limit(maxNbResult).sort({
        updated_at: reverse ? -1 : 1
      });

      if (virtualReturnedFields) {
        virtualReturnedFields.forEach(function (virtualFieldReturned) {
          op.populate(virtualFieldReturned);
        });
      }

      op.exec(function (err, resultUnfiltered) {
        callbackResult.exec(err, resultUnfiltered).then(function (results) {
          var resultJson = patch.leanWithId(results);
          return resolve(resultJson);
        })["catch"](function (err2) {
          return reject(err2);
        });
      });
    } catch (err) {
      reject(err);
    }
  });
}

function buildPaginateQuery(objectTargeted, lastPaginateId, queryParam, reverse) {
  var query = {};
  Object.keys(queryParam).forEach(function (key) {
    query[key] = queryParam[key];
  });
  var include = '';

  if (lastPaginateId === rigorousConfig.PAGINATION_LAST_ID || lastPaginateId === rigorousConfig.PAGINATION_INITIAL_ID) {
    include = 'e';
  }

  query.updated_at = _defineProperty({}, reverse ? "$lt".concat(include) : "$gt".concat(include), objectTargeted.updated_at);
  return query;
}

function buildObjectTargeted(_x, _x2, _x3, _x4) {
  return _buildObjectTargeted.apply(this, arguments);
}
/**
 * params.virtualReturnedFields = [{ path: 'owner', select: { xx: 1, yy: 1 } }]
 */


function _buildObjectTargeted() {
  _buildObjectTargeted = _asyncToGenerator(
  /*#__PURE__*/
  regeneratorRuntime.mark(function _callee2(collectionName, lastPaginateId, queryParam, reverse) {
    var objectTargeted;
    return regeneratorRuntime.wrap(function _callee2$(_context2) {
      while (1) {
        switch (_context2.prev = _context2.next) {
          case 0:
            objectTargeted = null;

            if (!(lastPaginateId === rigorousConfig.PAGINATION_LAST_ID || lastPaginateId === rigorousConfig.PAGINATION_INITIAL_ID)) {
              _context2.next = 7;
              break;
            }

            _context2.next = 4;
            return mongoose.model(collectionName).findOne(_objectSpread({}, queryParam, {
              updated_at: _defineProperty({}, reverse ? '$lte' : '$gte', reverse ? new Date(9900, 1, 1).getTime() : new Date(1, 1, 1).getTime()) // handle lastPaginateId = initial or final

            })).sort({
              updated_at: reverse ? -1 : 1
            }).exec();

          case 4:
            objectTargeted = _context2.sent;
            _context2.next = 10;
            break;

          case 7:
            _context2.next = 9;
            return mongoose.model(collectionName).findOne(_objectSpread({}, queryParam, {
              _id: lastPaginateId
            })).exec();

          case 9:
            objectTargeted = _context2.sent;

          case 10:
            return _context2.abrupt("return", objectTargeted);

          case 11:
          case "end":
            return _context2.stop();
        }
      }
    }, _callee2);
  }));
  return _buildObjectTargeted.apply(this, arguments);
}

module.exports =
/*#__PURE__*/
function () {
  var _ref = _asyncToGenerator(
  /*#__PURE__*/
  regeneratorRuntime.mark(function _callee(collectionName, queryParam, maxNbResult, lastPaginateId, reverse, params) {
    var objectTargeted, query, results;
    return regeneratorRuntime.wrap(function _callee$(_context) {
      while (1) {
        switch (_context.prev = _context.next) {
          case 0:
            if (!helper_format_checker.isNil(params)) {
              _context.next = 2;
              break;
            }

            throw new RigorousError(errorTypes.RESPONSE_ERROR_OPERATION);

          case 2:
            if (!(helper_format_checker.isNil(params.selectAttributesReturned) && helper_format_checker.isObjectEmpty(params.selectAttributesReturned))) {
              _context.next = 4;
              break;
            }

            throw new RigorousError(errorTypes.RESPONSE_ERROR_OPERATION);

          case 4:
            checkPaginationFilter(queryParam);
            _context.prev = 5;
            _context.next = 8;
            return buildObjectTargeted(collectionName, lastPaginateId, queryParam, reverse);

          case 8:
            objectTargeted = _context.sent;

            if (objectTargeted) {
              _context.next = 11;
              break;
            }

            return _context.abrupt("return", []);

          case 11:
            query = buildPaginateQuery(objectTargeted, lastPaginateId, queryParam, reverse);
            _context.next = 14;
            return findResults(collectionName, query, maxNbResult, reverse, params);

          case 14:
            results = _context.sent;
            return _context.abrupt("return", results);

          case 18:
            _context.prev = 18;
            _context.t0 = _context["catch"](5);
            throw _context.t0;

          case 21:
          case "end":
            return _context.stop();
        }
      }
    }, _callee, null, [[5, 18]]);
  }));

  return function (_x5, _x6, _x7, _x8, _x9, _x10) {
    return _ref.apply(this, arguments);
  };
}();