import { ApolloClient } from 'apollo-client'
import { InMemoryCache } from 'apollo-cache-inmemory'
import withApollo from 'next-with-apollo'
import { createHttpLink } from 'apollo-link-http'
import fetch from 'isomorphic-unfetch'

const GRAPHQL_URL = process.env.BACKEND_URL || 'http://localhost:1337/graphql'

const link = new createHttpLink({
    fetch,
    uri: GRAPHQL_URL
})

export default withApollo(

    ({initialState}) => 
        new ApolloClient({
            link,
            cache: new InMemoryCache()
                .restore(initialState || {})
        })
)