import { createUploadLink } from 'apollo-upload-client'

const link = createUploadLink(/* Options */)

import gql from 'graphql-tag'
import { graphql } from 'react-apollo'

export default graphql(gql`
  mutation($files: [Upload!]!) {
    uploadFiles(files: $files) {
      id
    }
  }
`)(({ mutate }) => (
  <input
    type="file"
    multiple
    required
    onChange={({ target: { validity, files } }) =>
      validity.valid && mutate({ variables: { files } })
    }
  />
))

import gql from 'graphql-tag'
import { graphql } from 'react-apollo'

export default graphql(gql`
  mutation($file: Upload!) {
    uploadFile(file: $file) {
      id
    }
  }
`)(({ mutate }) => (
  <input
    type="file"
    required
    onChange={({
      target: {
        validity,
        files: [file]
      }
    }) => validity.valid && mutate({ variables: { file } })}
  />
))

import gql from 'graphql-tag'

// Apollo Client instance
import client from './apollo'

const file = new Blob(['Foo.'], { type: 'text/plain' })

// Optional, defaults to `blob`
file.name = 'bar.txt'

client.mutate({
  mutation: gql`
    mutation($file: Upload!) {
      uploadFile(file: $file) {
        id
      }
    }
  `,
  variables: { file }
})

import { ReactNativeFile } from 'apollo-upload-client'

const file = new ReactNativeFile({
  uri: '…',
  type: 'image/jpeg',
  name: 'photo.jpg'
})

const files = ReactNativeFile.list([
  {
    uri: '…',
    type: 'image/jpeg',
    name: 'photo-1.jpg'
  },
  {
    uri: '…',
    type: 'image/jpeg',
    name: 'photo-2.jpg'
  }
])