mongo-url-utils/lib/mongo-url.js

url parser utilities for connecting with mongodb

const is = require('is');
const query = require('./query');
const fields = require('./fields');
const limit = require('./limit');
const skip = require('./skip');
const sort = require('./sort');

const querystring = require('querystring');

function parseParams(params, opts) {
  if (!opts) opts = {};

  // parse querystring into params
  if (is.string(params)) params = querystring.parse(params);

  const result = {
    query: {},
    options: {}
  };

  if (params.fields) {
    try {
      result.options.fields = fields.parse(params.fields, {strictEncoding: !!opts.strictEncoding});
    } catch (err) {
      err.message = `Error parsing fields: ${err.message}`;
      throw err;
    }
  }
  if (params.skip) {
    try {
      result.options.skip = skip(params.skip);
    } catch (err) {
      err.message = `Error parsing skip: ${err.message}`;
      throw err;
    }
  }
  if (params.limit) {
    try {
      result.options.limit = limit(params.limit);
    } catch (err) {
      err.message = `Error parsing limit: ${err.message}`;
      throw err;
    }
  }
  if (params.sort) {
    try {
      result.options.sort = sort.parse(params.sort, {strictEncoding: !!opts.strictEncoding});
    } catch (err) {
      err.message = `Error parsing sort: ${err.message}`;
      throw err;
    }
  }
  if (params.query) {
    try {
      result.query = query.parse(params.query, opts.query || {});
    } catch (err) {
      err.message = `Error parsing query: ${err.message}`;
      throw err;
    }
  }

  return result;
}
module.exports = parseParams;

function findIn(collection, params) {
  const parsed = parseParams(params);
  return collection.find(parsed.query, parsed.options);
}

function findOneIn(collection, params, callback) {
  const parsed = parseParams(params);
  return collection.findOne(parsed.query, parsed.options, callback);
}

// direct access...
parseParams.findIn = findIn;
parseParams.findOneIn = findOneIn;
parseParams.query = query.parse.bind(query);
parseParams.sort = sort.parse.bind(sort);
parseParams.fields = fields.parse.bind(fields);
parseParams.limit = limit;
parseParams.skip = skip;