mobilizon/js/src/vue-apollo.ts

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import Vue from 'vue';
import VueApollo from 'vue-apollo';
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import { ApolloLink, Observable } from 'apollo-link';
import { InMemoryCache, IntrospectionFragmentMatcher } from 'apollo-cache-inmemory';
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import { onError } from 'apollo-link-error';
import { createLink } from 'apollo-absinthe-upload-link';
import { GRAPHQL_API_ENDPOINT, GRAPHQL_API_FULL_PATH } from './api/_entrypoint';
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import { ApolloClient } from 'apollo-client';
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import { buildCurrentUserResolver } from '@/apollo/user';
import { isServerError } from '@/types/apollo';
import { REFRESH_TOKEN } from '@/graphql/auth';
import { AUTH_ACCESS_TOKEN, AUTH_REFRESH_TOKEN } from '@/constants';
import { logout, saveTokenData } from '@/utils/auth';
// Install the vue plugin
Vue.use(VueApollo);
// Http endpoint
const httpServer = GRAPHQL_API_ENDPOINT || 'http://localhost:4000';
const httpEndpoint = GRAPHQL_API_FULL_PATH || `${httpServer}/api`;
const fragmentMatcher = new IntrospectionFragmentMatcher({
introspectionQueryResultData: {
__schema: {
types: [
{
kind: 'UNION',
name: 'SearchResult',
possibleTypes: [
{ name: 'Event' },
{ name: 'Person' },
{ name: 'Group' },
],
},
{
kind: 'INTERFACE',
name: 'Actor',
possibleTypes: [
{ name: 'Person' },
{ name: 'Group' },
],
},
],
},
},
});
const authMiddleware = new ApolloLink((operation, forward) => {
// add the authorization to the headers
operation.setContext({
headers: {
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authorization: generateTokenHeader(),
},
});
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if (forward) return forward(operation);
return null;
});
const uploadLink = createLink({
uri: httpEndpoint,
});
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let refreshingTokenPromise: Promise<boolean> | undefined;
let alreadyRefreshedToken = false;
const errorLink = onError(({ graphQLErrors, networkError, forward, operation }) => {
if (isServerError(networkError) && networkError.statusCode === 401 && !alreadyRefreshedToken) {
if (!refreshingTokenPromise) refreshingTokenPromise = refreshAccessToken();
return promiseToObservable(refreshingTokenPromise).flatMap(() => {
refreshingTokenPromise = undefined;
alreadyRefreshedToken = true;
const context = operation.getContext();
const oldHeaders = context.headers;
operation.setContext({
headers: {
...oldHeaders,
authorization: generateTokenHeader(),
},
});
return forward(operation);
});
}
if (graphQLErrors) {
graphQLErrors.forEach(({ message, locations, path }) =>
console.log(`[GraphQL error]: Message: ${message}, Location: ${locations}, Path: ${path}`),
);
}
if (networkError) console.log(`[Network error]: ${networkError}`);
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});
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const link = authMiddleware
.concat(errorLink)
.concat(uploadLink);
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const cache = new InMemoryCache({
fragmentMatcher,
});
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const apolloClient = new ApolloClient({
cache,
link,
connectToDevTools: true,
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resolvers: buildCurrentUserResolver(cache),
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});
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export const apolloProvider = new VueApollo({
defaultClient: apolloClient,
errorHandler(error) {
// eslint-disable-next-line no-console
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console.log('%cError', 'background: red; color: white; padding: 2px 4px; border-radius: 3px; font-weight: bold;', error.message);
},
});
// Manually call this when user log in
export function onLogin(apolloClient) {
// if (apolloClient.wsClient) restartWebsockets(apolloClient.wsClient);
}
// Manually call this when user log out
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export async function onLogout() {
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// if (apolloClient.wsClient) restartWebsockets(apolloClient.wsClient);
// We don't reset store because we rely on currentUser & currentActor
// which are in the cache (even null). Maybe try to rerun cache init after resetStore ?
// try {
// await apolloClient.resetStore();
// } catch (e) {
// // eslint-disable-next-line no-console
// console.log('%cError on cache reset (logout)', 'color: orange;', e.message);
// }
}
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async function refreshAccessToken() {
// Remove invalid access token, so the next request is not authenticated
localStorage.removeItem(AUTH_ACCESS_TOKEN);
const refreshToken = localStorage.getItem(AUTH_REFRESH_TOKEN);
console.log('Refreshing access token.');
try {
const res = await apolloClient.mutate({
mutation: REFRESH_TOKEN,
variables: {
refreshToken,
},
});
saveTokenData(res.data.refreshToken);
return true;
} catch (err) {
return false;
}
}
function generateTokenHeader() {
const token = localStorage.getItem(AUTH_ACCESS_TOKEN);
return token ? `Bearer ${token}` : null;
}
// Thanks: https://github.com/apollographql/apollo-link/issues/747#issuecomment-502676676
const promiseToObservable = <T> (promise: Promise<T>) => {
return new Observable<T>((subscriber) => {
promise.then(
(value) => {
if (subscriber.closed) {
return;
}
subscriber.next(value);
subscriber.complete();
},
(err) => {
console.error('Cannot refresh token.', err);
subscriber.error(err);
logout(apolloClient);
},
);
});
};