omnivore/packages/web/lib/networking/mutations/unsubscribeMutation.ts

import { gql } from 'graphql-request'
import { gqlFetcher } from '../networkHelpers'
import { Subscription } from '../queries/useGetSubscriptionsQuery'

type UnsubscribeResult = {
  unsubscribe: Unsubscribe
}

type Unsubscribe = {
  subscription: Subscription
  errorCodes?: unknown[]
}

export async function unsubscribeMutation(
  subscribtionName: string,
  id: string
): Promise<any | undefined> {
  const mutation = gql`
    mutation Unsubscribe($subscribtionName: String!, $subscriptionId: ID!) {
      unsubscribe(name: $subscribtionName, subscriptionId: $subscriptionId) {
        ... on UnsubscribeSuccess {
          subscription {
            id
          }
        }
        ... on UnsubscribeError {
          errorCodes
        }
      }
    }
  `

  try {
    const data = (await gqlFetcher(mutation, {
      subscriptionId: id,
      subscribtionName: subscribtionName,
    })) as UnsubscribeResult

    return data.unsubscribe.errorCodes
      ? undefined
      : data.unsubscribe.subscription.id
  } catch (error) {
    console.log('unsubscribeMutation error', error)
    return undefined
  }
}