graphql-compose-mongoose/es/resolvers/count.js

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

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

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

import { filterHelper, filterHelperArgs } from './helpers';


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

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

  return new tc.constructor.schemaComposer.Resolver({
    type: 'Int',
    name: 'count',
    kind: 'query',
    args: _extends({}, filterHelperArgs(tc, model, _extends({
      filterTypeName: `Filter${tc.getTypeName()}Input`,
      model
    }, opts && opts.filter))),
    resolve: resolveParams => {
      resolveParams.query = model.find();
      filterHelper(resolveParams);
      return resolveParams.query.count().exec();
    }
  });
}