How to use SSR with Redux in Next.js(Typescript) using next-redux-wrapper? [duplicate] - react-redux

This question already has an answer here:
next-redux-wrapper TypeError: nextCallback is not a function error in wrapper.getServerSideProps
(1 answer)
Closed 1 year ago.
Using redux with SSR in Next.js(Typescript) using next-redux-wrapper, but getting error on this line
async ({ req, store })
Says, Type 'Promise' provides no match for the signature '(context: GetServerSidePropsContext<ParsedUrlQuery, PreviewData>): Promise<GetServerSidePropsResult<{ [key: string]: any; }>>
Property 'req' does not exist on type 'Store<EmptyObject & { filterReducer: never; }, any> & { dispatch: unknown; }'.
Property 'store' does not exist on type 'Store<EmptyObject & { filterReducer: never; }, any> & { dispatch: unknown; }'
Here is my SSR code:-
export const getServerSideProps: GetServerSideProps = wrapper.getServerSideProps(async ({ req, store }) => {
let { query } = req
let searchCategory = query.category?.toString().toLowerCase().replace(/ /g, "-");
const apolloClient = initializeApollo();
const response = await apolloClient.query({
query: GET_PRODUCT_BY_CATEGORY,
variables: {
numProducts: 10,
category: searchCategory
}
});
await store.dispatch(getProducts(response));
});

You're calling wrapper.getServerSideProps in a wrong way.
Try like the following:
export const getServerSideProps = wrapper.getServerSideProps(
store => async ({req, res, query}) => {
// do your stuff with store and req
}
);
If you're looking for a working demo, you can visit my old answer

This code base could help you. ("next": "10.1.3")
Try using getInitialProps instead of getServerSideProps.
This works in my case. Like code below:
Try
in _app.js
import { wrapper } from '/store';
function MyApp(props) {
const { Component, pageProps } = props;
...
return (
<Component {...pageProps} />
)
}
App.getInitialProps = async props => {
const { Component, ctx } = props;
const pageProps = Component.getInitialProps
? await Component.getInitialProps(ctx)
: {};
//Anything returned here can be accessed by the client
return { pageProps: pageProps, store: ctx.store };
};
export default wrapper.withRedux(App);
store.js file:
const makeStore = props => {
if (!isEmpty(props)) {
return createStore(reducer, bindMiddleware([thunkMiddleware]));
} else {
const { persistStore, persistReducer } = require('redux-persist');
const persistConfig = {
key: 'root',
};
const persistedReducer = persistReducer(persistConfig, reducer); // Create a new reducer with our existing reducer
const store = createStore(
persistedReducer,
bindMiddleware([thunkMiddleware])
); // Creating the store again
store.__persistor = persistStore(store); // This creates a persistor object & push that persisted object to .__persistor, so that we can avail the persistability feature
return store;
}
};
// Export the wrapper & wrap the pages/_app.js with this wrapper only
export const wrapper = createWrapper(makeStore);
in your page:
HomePage.getInitialProps = async ctx => {
const { store, query, res } = ctx;
};

Related

Modify value inside HOC on NextJS

I've been working on a way to set up authentication and authorization for my NextJS app, so far it was pretty easy but I've hit a wall.
I have a value that lives and is watched on a context, and I have a HOC that I need for my NextJS app to be able to use hooks with GraphQl, the issues is that I don't think I can call the context and use the value from a HOC, since it is simply not allowed.
Is there a way I can dynamically change the value on the HOC so that when the user logs in, I can then update the HOC to have the proper access token?
Some context: the user is first anonymous, whenever he/she logs in, I get an auth state change from Firebase from which I can extract the access token and add it to any future requests. But the point of the hoc is to provide next with full Graphql capabilities, the thing is that I need that hoc go listen for changes on a context state.
This is the Connection Builder:
import {
ApolloClient,
InMemoryCache,
HttpLink,
NormalizedCacheObject,
} from "#apollo/client";
import { WebSocketLink } from "#apollo/client/link/ws";
import { SubscriptionClient } from "subscriptions-transport-ws";
const connectionString = process.env.HASURA_GRAPHQL_API_URL || "";
const createHttpLink = (authState: string, authToken: string) => {
const isIn = authState === "in";
const httpLink = new HttpLink({
uri: `https${connectionString}`,
headers: {
// "X-hasura-admin-secret": `https${connectionString}`,
lang: "en",
"content-type": "application/json",
Authorization: isIn && `Bearer ${authToken}`,
},
});
return httpLink;
};
const createWSLink = (authState: string, authToken: string) => {
const isIn = authState === "in";
return new WebSocketLink(
new SubscriptionClient(`wss${connectionString}`, {
lazy: true,
reconnect: true,
connectionParams: async () => {
return {
headers: {
// "X-hasura-admin-secret": process.env.HASURA_GRAPHQL_ADMIN_SECRET,
lang: "en",
"content-type": "application/json",
Authorization: isIn && `Bearer ${authToken}`,
},
};
},
})
);
};
export default function createApolloClient(
initialState: NormalizedCacheObject,
authState: string,
authToken: string
) {
const ssrMode = typeof window === "undefined";
let link;
if (ssrMode) {
link = createHttpLink(authState, authToken);
} else {
link = createWSLink(authState, authToken);
}
return new ApolloClient({
ssrMode,
link,
cache: new InMemoryCache().restore(initialState),
});
}
This is the context:
import { useState, useEffect, createContext, useContext } from "react";
import { getDatabase, ref, set, onValue } from "firebase/database";
import { useFirebase } from "./use-firebase";
import { useGetUser } from "../hooks/use-get-user";
import { getUser_Users_by_pk } from "../types/generated/getUser";
import { getApp } from "firebase/app";
const FirebaseAuthContext = createContext<FirebaseAuthContextProps>({
authUser: null,
authState: "",
authToken: null,
currentUser: undefined,
loading: true,
login: () => Promise.resolve(undefined),
registerUser: () => Promise.resolve(undefined),
loginWithGoogle: () => Promise.resolve(undefined),
loginWithMicrosoft: () => Promise.resolve(undefined),
});
export const FirebaseAuthContextProvider: React.FC = ({ children }) => {
const [loading, setLoading] = useState<boolean>(true);
const [authUser, setAuthUser] = useState<User | null>(null);
const { data } = useGetUser(authUser?.uid || "");
const [authState, setAuthState] = useState("loading");
const [authToken, setAuthToken] = useState<string | null>(null);
const currentUser = data?.Users_by_pk;
// ...
const authStateChanged = async (user: User | null) => {
if (!user) {
setAuthUser(null);
setLoading(false);
setAuthState("out");
return;
}
const token = await user.getIdToken();
const idTokenResult = await user.getIdTokenResult();
const hasuraClaim = idTokenResult.claims["https://hasura.io/jwt/claims"];
if (hasuraClaim) {
setAuthState("in");
setAuthToken(token);
setAuthUser(user);
} else {
// Check if refresh is required.
const metadataRef = ref(
getDatabase(getApp()),
"metadata/" + user.uid + "/refreshTime"
);
onValue(metadataRef, async (data) => {
if (!data.exists) return;
const token = await user.getIdToken(true);
setAuthState("in");
setAuthUser(user);
setAuthToken(token);
});
}
};
useEffect(() => {
const unsubscribe = getAuth().onAuthStateChanged(authStateChanged);
return () => unsubscribe();
}, []);
const contextValue: FirebaseAuthContextProps = {
authUser,
authState,
authToken,
currentUser,
loading,
login,
registerUser,
loginWithGoogle,
loginWithMicrosoft,
};
return (
<FirebaseAuthContext.Provider value={contextValue}>
{children}
</FirebaseAuthContext.Provider>
);
};
export const useFirebaseAuth = () =>
useContext<FirebaseAuthContextProps>(FirebaseAuthContext);
This is the HOC:
export const withApollo =
({ ssr = true } = {}) =>
(PageComponent: NextComponentType<NextPageContext, any, {}>) => {
const WithApollo = ({
apolloClient,
apolloState,
...pageProps
}: {
apolloClient: ApolloClient<NormalizedCacheObject>;
apolloState: NormalizedCacheObject;
}) => {
let client;
if (apolloClient) {
// Happens on: getDataFromTree & next.js ssr
client = apolloClient;
} else {
// Happens on: next.js csr
// client = initApolloClient(apolloState, undefined);
client = initApolloClient(apolloState);
}
return (
<ApolloProvider client={client}>
<PageComponent {...pageProps} />
</ApolloProvider>
);
};
const initApolloClient = (initialState: NormalizedCacheObject) => {
// Make sure to create a new client for every server-side request so that data
// isn't shared between connections (which would be bad)
if (typeof window === "undefined") {
return createApolloClient(initialState, "", "");
}
// Reuse client on the client-side
if (!globalApolloClient) {
globalApolloClient = createApolloClient(initialState, "", "");
}
return globalApolloClient;
};
I fixed it by using this whenever I have an update on the token:
import { setContext } from "#apollo/client/link/context";
const authStateChanged = async (user: User | null) => {
if (!user) {
setAuthUser(null);
setLoading(false);
setAuthState("out");
return;
}
setAuthUser(user);
const token = await user.getIdToken();
const idTokenResult = await user.getIdTokenResult();
const hasuraClaim = idTokenResult.claims["hasura"];
if (hasuraClaim) {
setAuthState("in");
setAuthToken(token);
// THIS IS THE FIX
setContext(() => ({
headers: { Authorization: `Bearer ${token}` },
}));
} else {
// Check if refresh is required.
const metadataRef = ref(
getDatabase(getApp()),
"metadata/" + user.uid + "/refreshTime"
);
onValue(metadataRef, async (data) => {
if (!data.exists) return;
const token = await user.getIdToken(true);
setAuthState("in");
setAuthToken(token);
// THIS IS THE FIX
setContext(() => ({
headers: { Authorization: `Bearer ${token}` },
}));
});
}
};

Dynamic routing using graphQL in a Next.js app

I'm building a webpage that consumes the spaceX graphQL api, using apollo as a client. On the landing page I want to display a 'launches' card, that when clicked on, directs to a new page with details about that particular launch, as below:
index.js
import { ApolloClient, InMemoryCache, gql } from "#apollo/client"
import Link from 'next/link'
export const getStaticProps = async () => {
const client = new ApolloClient({
uri: 'https://api.spacex.land/graphql/',
cache: new InMemoryCache()
})
const { data } = await client.query({
query: gql`
query GetLaunches {
launchesPast(limit: 10) {
id
mission_name
launch_date_local
launch_site {
site_name_long
}
links {
article_link
video_link
mission_patch
}
rocket {
rocket_name
}
}
}
`
});
return {
props: {
launches: data.launchesPast
}
}
}
export default function Home({ launches }) {
return (
<div>
{launches.map(launch => {
return(
<Link href = {`/items/${launch.id}`} key = {launch.id}>
<a>
<p>{launch.mission_name}</p>
</a>
</Link>
)
})}
</div>
)
}
I've set up a new page items/[id].js to display information about individual launches, but this is where the confusion is. Using a standard REST api I'd simply use fetch, then append the id to the end of the url to retrieve the desired data. However I'm not sure how to do the equivalent in graphQL, using the getStaticPaths function. Any suggestions?
Here's items/[id]/js, where I'm trying to render the individual launch data:
import { ApolloClient, InMemoryCache, gql } from "#apollo/client"
export const getStaticPaths = async () => {
const client = new ApolloClient({
uri: "https://api.spacex.land/graphql/",
cache: new InMemoryCache(),
});
const { data } = await client.query({
query: gql`
query GetLaunches {
launchesPast(limit: 10) {
id
}
}
`,
});
const paths = data.map((launch) => {
return {
params: { id: launch.id.toString() },
};
});
return {
paths,
fallback:false
}
};
export const getStaticProps = async (context) => {
const id = context.params.id
// not sure what to do here
}
const Items = () => {
return (
<div>
this is items
</div>
);
}
export default Items;
for getStaticPaths
export const getStaticPaths = async () => {
const { data } = await client.query({
query: launchesPastQuery, // this will query the id only
});
return {
paths: data.CHANGE_THIS.map((param) => ({
params: { id: param.id },
})),
fallback: false,
};
};
CHANGE_THIS is the Query Type that follows data in the JSON response.
for getStaticProps
export const getStaticProps = async ({
params,
}) => {
const { data } = await client.query({
query: GetLaunchPastByID ,
variables: { LaunchID: params.id, idType: "UUID" }, // the idType is optional, and the LaunchID is what you'll use for querying by it*
});
return {
props: {
launchesPast: data.CHANGE_THIS,
},
};
The launchPastQueryByID is like:
const GetLaunchPastByID = gql`
query LaunchPastByID($LaunchID: UUID!) { // UUID is id type
CHANGE_THIS(id: $LaunchID) {
id
//...
}
}
`;
sorry for not giving you the correct queries, spacex.land is currently down.

Cannot see data in view page source even though Cache of Apollo Client have data

I don't know why in another page, I use this way just different query and I can see data in view page source, but in this page , it not work. I wondering it cause I use localStorage value as params, i don't think problem come from query.
interface Props {
__typename?: 'ProductOfBill';
amount: number,
name: string,
totalPrice: number,
type: string,
unitPrice: number,
}
const Cart = () => {
const [products,setProducts] = useState<Props[]>([])
const { data } = useGetSomeProductQuery({
variables: { productList: productListForBill()},
notifyOnNetworkStatusChange: true
});
useEffect(() =>{
if(data?.getSomeProduct){
setProducts(data.getSomeProduct)
}
},[data])
return (
<>
...
</>
);
};
export const getStaticProps: GetStaticProps = async () => {
const apolloClient = initializeApollo();
await apolloClient.query<GetSomeProductQuery>({
query: GetSomeProductDocument,
variables: { productList: productListForBill() },
});
return addApolloState(apolloClient, {
props: {},
});
};
export default Cart;
I get localStorage value from this method.
export const productListForBill = () : GetProductForBill[] =>{
const returnEmtpyArray : GetProductForBill[] = []
if(typeof window !== "undefined"){
if(localStorage.getItem("products"))
{
const tempProduct = JSON.parse(localStorage.getItem("products") || "")
if(Array.isArray(tempProduct)){
return tempProduct
}
}
}
return returnEmtpyArray
}
and I custom Apollo Client like doc of Nextjs in github
import { useMemo } from 'react'
import { ApolloClient, HttpLink, InMemoryCache, NormalizedCacheObject } from '#apollo/client'
import merge from 'deepmerge'
import isEqual from 'lodash/isEqual'
export const APOLLO_STATE_PROP_NAME = '__APOLLO_STATE__'
interface IApolloStateProps {
[APOLLO_STATE_PROP_NAME]?: NormalizedCacheObject
}
let apolloClient : ApolloClient<NormalizedCacheObject>
function createApolloClient() {
return new ApolloClient({
//type of "window"=== undifined
ssrMode: true,
link: new HttpLink({
uri: "http://localhost:4000/graphql",
credentials: "include",
}),
cache: new InMemoryCache()
)}
}
export function initializeApollo(initialState : NormalizedCacheObject | null = null) {
const _apolloClient = apolloClient ?? createApolloClient()
if (initialState) {
const existingCache = _apolloClient.extract()
cache
const data = merge(existingCache, initialState, {
arrayMerge: (destinationArray, sourceArray) => [
...sourceArray,
...destinationArray.filter((d) =>
sourceArray.every((s) => !isEqual(d, s))
),
],
})
_apolloClient.cache.restore(data)
}
if (typeof window === 'undefined') return _apolloClient
if (!apolloClient) apolloClient = _apolloClient
return _apolloClient
}
export function addApolloState(client : ApolloClient<NormalizedCacheObject>, pageProps: { props: IApolloStateProps }) {
if (pageProps?.props) {
pageProps.props[APOLLO_STATE_PROP_NAME] = client.cache.extract()
}
return pageProps
}
export function useApollo(pageProps : IApolloStateProps) {
const state = pageProps[APOLLO_STATE_PROP_NAME]
const store = useMemo(() => initializeApollo(state), [state])
return store
}
Answering
Cannot see data in view page source even though Cache of Apollo Client have data
These are client side methods, value will not be visible in view source but in evaluated source, look in the elements panel in chrome.

Firebase Function Returns Before All Callback functions complete execution

I'm using the Google Storage NodeJS client library to list GCS Bucket paths.
Here's the code to the Firebase Function:
import * as functions from 'firebase-functions';
import { Storage } from '#google-cloud/storage';
import { globVars } from '../admin/admin';
const projectId = process.env.GCLOUD_PROJECT;
// shared global variables setup
const { keyFilename } = globVars;
// Storage set up
const storage = new Storage({
projectId,
keyFilename,
});
export const gcsListPath = functions
.region('europe-west2')
.runWith({ timeoutSeconds: 540, memory: '256MB' })
.https.onCall(async (data, context) => {
if (context.auth?.token.email_verified) {
const { bucketName, prefix, pathList = false, fileList = false } = data;
let list;
const options = {
autoPaginate: false,
delimiter: '',
prefix,
};
if (pathList) {
options.delimiter = '/';
let test: any[] = [];
const callback = (_err: any, _files: any, nextQuery: any, apiResponse: any) => {
test = test.concat(apiResponse.prefixes);
console.log('test : ', test);
console.log('nextQuery : ', nextQuery);
if (nextQuery) {
storage.bucket(bucketName).getFiles(nextQuery, callback);
} else {
// prefixes = The finished array of prefixes.
list = test;
}
}
storage.bucket(bucketName).getFiles(options, callback);
}
if (fileList) {
const [files] = await storage
.bucket(bucketName)
.getFiles(options);
list = files.map((file) => file.name);
}
return { list }; //returning null as it exec before callback fns finish
} else {
return {
error: { message: 'Bad Request', status: 'INVALID_ARGUMENT' },
};
}
});
My problem is that my Firebase function returns the list (null) before all the callback functions finish execution.
Could someone spot and point out what needs to be changed/added to make the function wait for all the callback functions to finish. I've tried adding async/await but can't seem to get it right.
The reason for your error is that you use a callback. It's not awaited in the code. I would recommend to turn the callback code to a promise. Something like this.
import * as functions from "firebase-functions";
import { Storage } from "#google-cloud/storage";
import { globVars } from "../admin/admin";
const projectId = process.env.GCLOUD_PROJECT;
// shared global variables setup
const { keyFilename } = globVars;
// Storage set up
const storage = new Storage({
projectId,
keyFilename,
});
const getList = (bucketName, options) => {
return new Promise((resolve, reject) => {
let list;
let test: any[] = [];
const callback = (
_err: any,
_files: any,
nextQuery: any,
apiResponse: any
) => {
test = test.concat(apiResponse.prefixes);
console.log("test : ", test);
console.log("nextQuery : ", nextQuery);
if (nextQuery) {
storage.bucket(bucketName).getFiles(nextQuery, callback);
} else {
// prefixes = The finished array of prefixes.
list = test;
}
resolve(list);
};
try {
storage.bucket(bucketName).getFiles(options, callback);
} catch (error) {
reject(eror);
}
});
};
export const gcsListPath = functions
.region("europe-west2")
.runWith({ timeoutSeconds: 540, memory: "256MB" })
.https.onCall(async (data, context) => {
if (context.auth?.token.email_verified) {
const { bucketName, prefix, pathList = false, fileList = false } = data;
let list;
const options = {
autoPaginate: false,
delimiter: "",
prefix,
};
if (pathList) {
options.delimiter = "/";
list = await getList(bucketName, options);
}
if (fileList) {
const [files] = await storage.bucket(bucketName).getFiles(options);
list = files.map((file) => file.name);
}
return { list }; //returning null as it exec before callback fns finish
} else {
return {
error: { message: "Bad Request", status: "INVALID_ARGUMENT" },
};
}
});
I'm not sure if the part with fileList will work as expectedt. It looks like the API doesn't support await but only callbacks.
import * as functions from "firebase-functions";
import { GetFilesOptions, Storage } from "#google-cloud/storage";
import { globVars } from "../admin/admin";
const projectId = process.env.GCLOUD_PROJECT;
// shared global variables setup
const { keyFilename } = globVars;
// Storage set up
const storage = new Storage({
projectId,
keyFilename,
});
const getList = (bucketName: string, options: GetFilesOptions) => {
return new Promise((resolve, reject) => {
// let test: any[] = [];
let list: any[] = [];
const callback = (
_err: any,
_files: any,
nextQuery: any,
apiResponse: any
) => {
list = list.concat(apiResponse.prefixes);
console.log("list : ", list);
console.log("nextQuery : ", nextQuery);
if (nextQuery) {
storage.bucket(bucketName).getFiles(nextQuery, callback);
} else {
// prefixes = The finished array of prefixes.
resolve(list);
}
};
try {
storage.bucket(bucketName).getFiles(options, callback);
} catch (error) {
reject(error);
}
});
};
export const gcsListPath = functions
.region("europe-west2")
.runWith({ timeoutSeconds: 540, memory: "256MB" })
.https.onCall(async (data, context) => {
if (context.auth?.token.email_verified) {
const { bucketName, prefix, pathList = false, fileList = false } = data;
let list;
const options = {
autoPaginate: false,
delimiter: "",
prefix,
};
if (pathList) {
options.delimiter = "/";
list = await getList(bucketName, options);
}
if (fileList) {
const [files] = await storage.bucket(bucketName).getFiles(options);
list = files.map((file) => file.name);
}
return { list }; //returning null as it exec before callback fns finish
} else {
return {
error: { message: "Bad Request", status: "INVALID_ARGUMENT" },
};
}
});

How to Unit Test Graphql Resolver functions created using apollo-resolvers

I have created resolvers(userresolver.js) using 'apollo-resolvers' npm module as below.
import { createResolver } from 'apollo-resolvers';
import { isInstance } from 'apollo-errors';
const baseResolver = createResolver(
null,
(root, args, context, error) => isInstance(error) ? error : new UnknownError()
);
const users = baseResolver.createResolver(
(parent, args, { models, me } ) => {
return Object.values(models.users);
}
);
export default {
Query: {
users
}
}
;
These also work fine when I test the queries after starting the server.
I now want to do unit testing of the resolver functions.
I am not sure how to do that. Can someone help me on how to unit test the resolver functions. I am using mocha with chai for testing my project.
You can try easygraphql-tester, it has a method that'll help you to test the resolvers.
Here is the documentation of it.
Example:
Resolver
"use strict";
const license = (__, args, ctx) => {
const { key } = args;
return {
id: "1234",
body: "This is a test license",
description: `This is a description with key ${key}`
};
};
module.exports = {
Query: {
license
}
};
Test
"use strict";
const fs = require("fs");
const path = require("path");
const { expect } = require("chai");
const EasyGraphQLTester = require("easygraphql-tester");
const resolvers = require("../resolvers");
const schemaCode = fs.readFileSync(
path.join(__dirname, "..", "schema.gql"),
"utf8"
);
describe("Test resolvers", () => {
let tester;
beforeAll(() => {
tester = new EasyGraphQLTester(schemaCode, resolvers);
});
it("should return expected values", async () => {
const query = `
query GET_LICENSE($key: String!) {
license(key: $key) {
id
body
description
}
}
`;
const args = {
key: "1234"
};
const result = await tester.graphql(query, {}, {}, args);
expect(result.data.license.id).to.be.eq("1234");
expect(result.data.license.body).to.be.eq("This is a test license");
expect(result.data.license.description).to.be.eq(
`This is a description with key ${args.key}`
);
});
});

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