graphql-compose-mongoose/lib/utils/toMongoDottedObject.js.flow

Plugin for `graphql-compose` which derive a graphql types from a mongoose model.

/* @flow */

import { Types } from 'mongoose';
import { isObject } from 'graphql-compose';

const ObjectId = Types.ObjectId;

function _toMongoDottedObject(obj, target = {}, path = [], filter = false) {
  if (!isObject(obj) && !Array.isArray(obj)) return obj;
  const objKeys = Object.keys(obj);

  /* eslint-disable */
  objKeys.forEach(key => {
    if (key.startsWith('$')) {
      const val = Array.isArray(obj[key])
        ? obj[key].map(v => _toMongoDottedObject(v, {}, [], filter))
        : _toMongoDottedObject(obj[key], {}, [], filter);
      if (path.length === 0) {
        target[key] = val;
      } else {
        target[path.join('.')] = {
          ...target[path.join('.')],
          [key]: val,
        };
      }
    } else if (Object(obj[key]) === obj[key] && !(obj[key] instanceof ObjectId)) {
      _toMongoDottedObject(
        obj[key],
        target,
        Array.isArray(obj) && filter ? path : path.concat(key),
        filter
      );
    } else {
      target[path.concat(key).join('.')] = obj[key];
    }
  });

  if (objKeys.length === 0) {
    target[path.join('.')] = obj;
  }

  return target;
  /* eslint-enable */
}

/**
 * Convert object to dotted-key/value pair
 * { a: { b: { c: 1 }}} ->  { 'a.b.c': 1 }
 * { a: { $in: [ 1, 2, 3] }} ->  { 'a': { $in: [ 1, 2, 3] } }
 * { a: { b: { $in: [ 1, 2, 3] }}} ->  { 'a.b': { $in: [ 1, 2, 3] } }
 * { a: [ { b: 1 }, { c: 2 }]} -> { 'a.0.b': 1, 'a.1.c': 2 }
 * Usage:
 *   var toMongoDottedObject(obj)
 *   or
 *   var target = {}; toMongoDottedObject(obj, target)
 *
 * @param {Object} obj source object
 * @param {Object} target target object
 * @param {Array} path path array (internal)
 */
export function toMongoDottedObject(
  obj: Object,
  target?: Object = {},
  path?: string[] = []
): { [dottedPath: string]: mixed } {
  return _toMongoDottedObject(obj, target, path);
}

/**
 * Convert object to dotted-key/value pair
 * { a: { b: { c: 1 }}} ->  { 'a.b.c': 1 }
 * { a: { $in: [ 1, 2, 3] }} ->  { 'a': { $in: [ 1, 2, 3] } }
 * { a: { b: { $in: [ 1, 2, 3] }}} ->  { 'a.b': { $in: [ 1, 2, 3] } }
 * { a: [ { b: 1 }, { c: 2 }]} -> { 'a.b': 1, 'a.c': 2 }
 * Usage:
 *   var toMongoFilterDottedObject(obj)
 *   or
 *   var target = {}; toMongoFilterDottedObject(obj, target)
 *
 * @param {Object} obj source object
 * @param {Object} target target object
 * @param {Array} path path array (internal)
 */
export function toMongoFilterDottedObject(
  obj: Object,
  target?: Object = {},
  path?: string[] = []
): { [dottedPath: string]: mixed } {
  return _toMongoDottedObject(obj, target, path, true);
}