/**
 * This file provided by Facebook is for non-commercial testing and evaluation
 * purposes only.  Facebook reserves all rights not expressly granted.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */ import { commitMutation , graphql } from 'relay-hooks' ; const mutation = graphql `
  mutation ChangeTodoStatusMutation($input: ChangeTodoStatusInput!) {
    changeTodoStatus(input: $input) {
      todo {
        id
        complete
      }
      user {
        id
        completedCount
      }
    }
  }
` ; function getOptimisticResponse ( complete , todo , user ) { return { changeTodoStatus : { todo : { complete : complete , id : todo . id , } , user : { id : user . id , completedCount : complete ? user . completedCount + 1 : user . completedCount - 1 , } , } , } ; } function commit ( environment , complete , todo , user ) { const input = { complete , userId : user . userId , id : todo . id , } ; commitMutation ( environment , { mutation , variables : { input , } , optimisticResponse : getOptimisticResponse ( complete , todo , user ) , } ) ; } export default { commit } ;