stacker.news/api/ssrApollo.js

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import { ApolloClient, InMemoryCache } from '@apollo/client'
import { SchemaLink } from '@apollo/client/link/schema'
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import { makeExecutableSchema } from 'graphql-tools'
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import { getSession } from 'next-auth/client'
import resolvers from './resolvers'
import typeDefs from './typeDefs'
import models from './models'
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import slashtags from './slashtags'
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import { print } from 'graphql'
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import lnd from './lnd'
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import search from './search'
import { ME } from '../fragments/users'
import { PRICE } from '../fragments/price'
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export default async function getSSRApolloClient (req, me = null) {
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const session = req && await getSession({ req })
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const client = new ApolloClient({
ssrMode: true,
link: new SchemaLink({
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schema: makeExecutableSchema({
typeDefs,
resolvers
}),
context: {
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models,
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me: session
? session.user
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: me,
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lnd,
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search,
slashtags
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}
}),
cache: new InMemoryCache({
freezeResults: true
}),
assumeImmutableResults: true,
defaultOptions: {
watchQuery: {
fetchPolicy: 'cache-only',
nextFetchPolicy: 'cache-only',
canonizeResults: true,
ssr: true
},
query: {
fetchPolicy: 'cache-first',
nextFetchPolicy: 'cache-only',
canonizeResults: true,
ssr: true
}
}
})
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return client
}
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export function getGetServerSideProps (queryOrFunc, variablesOrFunc = null, notFoundFunc, requireVar) {
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return async function ({ req, query: params }) {
const { nodata, ...realParams } = params
// we want to use client-side cache
if (nodata) return { props: { } }
const variables = typeof variablesOrFunc === 'function' ? variablesOrFunc(realParams) : variablesOrFunc
const vars = { ...realParams, ...variables }
const query = typeof queryOrFunc === 'function' ? queryOrFunc(vars) : queryOrFunc
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const client = await getSSRApolloClient(req)
const { data: { me } } = await client.query({
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query: ME,
variables: { skipUpdate: true }
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})
const { data: { price } } = await client.query({
query: PRICE, variables: { fiatCurrency: me?.fiatCurrency }
})
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if (requireVar && !vars[requireVar]) {
return {
notFound: true
}
}
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let error = null; let data = null; let props = {}
if (query) {
try {
({ error, data } = await client.query({
query,
variables: vars
}))
} catch (err) {
if (err.message === 'you must be logged in') {
const callback = process.env.PUBLIC_URL + req.url
return {
redirect: {
destination: `/login?callbackUrl=${encodeURIComponent(callback)}`
}
}
}
throw err
}
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if (error || !data || (notFoundFunc && notFoundFunc(data, vars))) {
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return {
notFound: true
}
}
props = {
apollo: {
query: print(query),
variables: vars
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}
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}
}
return {
props: {
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...props,
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me,
price,
ssrData: data
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}
}
}
}