graphql-compose-mongoose/node8/resolvers/removeOne.js

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

'use strict';

exports.__esModule = true;

var _extends2 = require('babel-runtime/helpers/extends');

var _extends3 = _interopRequireDefault(_extends2);

exports.default = removeOne;

var _helpers = require('./helpers');

var _findOne = require('./findOne');

var _findOne2 = _interopRequireDefault(_findOne);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/* eslint-disable no-param-reassign */

function removeOne(model, tc, opts) {
  if (!model || !model.modelName || !model.schema) {
    throw new Error('First arg for Resolver removeOne() should be instance of Mongoose Model.');
  }

  if (!tc || tc.constructor.name !== 'TypeComposer') {
    throw new Error('Second arg for Resolver removeOne() should be instance of TypeComposer.');
  }

  const findOneResolver = (0, _findOne2.default)(model, tc, opts);

  const outputTypeName = `RemoveOne${tc.getTypeName()}Payload`;
  const outputType = tc.constructor.schemaComposer.getOrCreateTC(outputTypeName, t => {
    t.addFields({
      recordId: {
        type: 'MongoID',
        description: 'Removed document ID'
      },
      record: {
        type: tc,
        description: 'Removed document'
      }
    });
  });

  const resolver = new tc.constructor.schemaComposer.Resolver({
    name: 'removeOne',
    kind: 'mutation',
    description: 'Remove one document: ' + '1) Remove with hooks via findOneAndRemove. ' + '2) Return removed document.',
    type: outputType,
    args: (0, _extends3.default)({}, (0, _helpers.filterHelperArgs)(tc, model, (0, _extends3.default)({
      filterTypeName: `FilterRemoveOne${tc.getTypeName()}Input`,
      model
    }, opts && opts.filter)), (0, _helpers.sortHelperArgs)(tc, model, (0, _extends3.default)({
      sortTypeName: `SortRemoveOne${tc.getTypeName()}Input`
    }, opts && opts.sort))),
    resolve: async resolveParams => {
      const filterData = resolveParams.args && resolveParams.args.filter || {};

      if (!(typeof filterData === 'object') || Object.keys(filterData).length === 0) {
        return Promise.reject(new Error(`${tc.getTypeName()}.removeOne resolver requires at least one value in args.filter`));
      }

      // We should get all data for document, cause Mongoose model may have hooks/middlewares
      // which required some fields which not in graphql projection
      // So empty projection returns all fields.
      resolveParams.projection = {};

      let doc = await findOneResolver.resolve(resolveParams);

      if (resolveParams.beforeRecordMutate) {
        doc = await resolveParams.beforeRecordMutate(doc, resolveParams);
      }

      if (doc) {
        await doc.remove();

        return {
          record: doc,
          recordId: tc.getRecordIdFn()(doc)
        };
      }

      return null;
    }
  });

  return resolver;
}