How do you get an element out of a redux reducer? - javascript

I have a react component that has a html button that when clicked calls a function that adds an element to a redux reducer and then redirects to another component. The component that is redirected to needs to set state from the reducer but it won't. I know that it is being added to the array in the reducer because I wrote it as an async await and it redirects after it gets added.
This is the original component
const Posts = () => {
const dispatch = useDispatch();
const getProfile = async (member) => {
await dispatch({ type: 'ADD_MEMBER', response: member })
console.log(member)
window.location.href='/member'
console.log('----------- member------------')
console.log(post)
}
const socialNetworkContract = useSelector((state) => state.socialNetworkContract)
return (
<div>
{socialNetworkContract.posts.map((p, index) => {
return <tr key={index}>
<button onClick={() => getProfile(p.publisher)}>Profile</button>
</tr>})}
</div>
)
}
export default Posts;
This is the 'socialNetworkContract' reducer
import { connect, useDispatch, useSelector } from "react-redux";
let init = {
posts:[],
post:{},
profiles:[],
profile:{},
members:[],
member:{}
}
export const socialNetworkContract = (state = init, action) => {
const { type, response } = action;
switch (type) {
case 'ADD_POST':
return {
...state,
posts: [...state.posts, response]
}
case 'SET_POST':
return {
...state,
post: response
}
case 'ADD_PROFILE':
return {
...state,
profiles: [...state.profiles, response]
}
case 'SET_PROFILE':
return {
...state,
profile: response
}
case 'ADD_MEMBER':
return {
...state,
members: [...state.members, response]
}
case 'SET_MEMBER':
return {
...state,
member: response
}
default: return state
}
};
and this is the component that the html button redirects to
const Member = () => {
const [user, setUser] = useState({})
const [profile, setProfile] = useState({});
const dispatch = useDispatch();
useEffect(async()=>{
try {
const pro = socialNetworkContract.members[0];
setUser(pro)
const p = await incidentsInstance.usersProfile(user, { from: accounts[0] });
const a = await snInstance.getUsersPosts(user, { from: accounts[0] });
console.log(a)
setProfile(p)
} catch (e) {
console.error(e)
}
}, [])
const socialNetworkContract = useSelector((state) => state.socialNetworkContract)
return (
<div class="container">
{socialNetworkContract.posts.map((p, index) => {
return <tr key={index}>
{p.message}
{p.replies}
</tr>})}
</div>
</div>
</div>
</div>
)
}
export default Member;
This is the error I get in the console
Error: invalid address (arg="user", coderType="address", value={})
The functions I'm calling are solidity smart contracts and the have been tested and are working and the element I'm trying to retrieve out of the array is an ethereum address.
incidentsInstance and snInstance are declared in the try statement but I took a lot of the code out to make it easier to understand.

given setUser is async, your user is still an empty object when you make your request.
you could pass pro value instead:
useEffect(async () => {
try {
const pro = socialNetworkContract.members[0];
setUser(pro)
const p = await incidentsInstance.usersProfile(pro, { from: accounts[0] });
const a = await snInstance.getUsersPosts(pro, { from: accounts[0] });
setProfile(p)
} catch (e) {
console.error(e)
}
}, [])
or break your useEffect in two pieces:
useEffect(() => {
setUser(socialNetworkContract.members[0]);
}, [])
useEffect(async () => {
if (!Object.keys(user).length) return;
try {
const p = await incidentsInstance.usersProfile(user, { from: accounts[0] });
const a = await snInstance.getUsersPosts(user, { from: accounts[0] });
console.log(a)
setProfile(p)
} catch (e) {
console.error(e)
}
}, [user])
note: fwiw, at first sight your user state looks redundant since it's derived from a calculated value.

Related

Update client state received from api without refreshing in redux

I have two functions, one where I am able to send an order that updates the users balance amongst some other things, and another which retrieves the users balance for the user to see. Before any orders happen I still need to retrieve the balance for the user to see, thus I have broken my getBalance func from MarketLongFunc.
Using redux-toolkit and redux-thunk I have an ordersSlice.js that looks like this:
export const MarketLongFunc = createAsyncThunk(
"/order/marketlong",
async (value, thunkAPI) => {
const token = thunkAPI.getState().auth.user.token;
const newObj = {
value: value,
token: token,
};
let url = `http://localhost:3001/api/orders/marketlong`;
const response = await axios.post(url, newObj);
//getBalance()
return;
}
);
export const getBalance = createAsyncThunk(
"/order/getBalance",
async (value, thunkAPI) => {
const token = thunkAPI.getState().auth.user.token;
const newObj = {
token: token,
};
let url = `http://localhost:3001/api/orders/getBalance`;
const response = await axios.post(url, newObj);
return response.data;
}
);
const initialState = {
value: null,
error: null,
balance: null,
status: "idle",
orderStatus: "idle",
};
export const ordersSlice = createSlice({
name: "orders",
initialState,
reducers: {
reset: (state) => initialState,
resetStatus: (state) => {
state.orderStatus = "idle";
},
},
extraReducers(builder) {
builder
.addCase(MarketLongFunc.pending, (state, action) => {
state.orderStatus = "loading";
})
.addCase(MarketLongFunc.fulfilled, (state, action) => {
state.orderStatus = "success";
// getBalance();
// state.balance = action.payload;
})
.addCase(MarketLongFunc.rejected, (state, action) => {
state.orderStatus = "failed";
state.error = action.error.message;
})
.addCase(getBalance.pending, (state, action) => {
state.status = "loading";
})
.addCase(getBalance.fulfilled, (state, action) => {
// state.status = "success";
state.balance = action.payload;
state.status = "success";
})
.addCase(getBalance.rejected, (state, action) => {
state.status = "failed";
state.error = action.error.message;
});
},
});
export const { reset } = ordersSlice.actions;
export default ordersSlice.reducer;
Now in my next component the useEffect will call if there is no balance yet and the user is logged in. The way in which I was trying to solve my issue was to use the state.orderStatus = "success" under MarketLongFunc.fulfilled, this way hypothetically I can dispatch getbalance under the useEffect if a MarketLong is placed and then change the status with reset like the following:
export const Orderform = () => {
const user = useSelector((state) => state.auth.user);
const balance = useSelector((state) => state.orders.balance);
const status = useSelector((state) => state.orders.orderStatus);
const dispatch = useDispatch();
useEffect(() => {
if (!balance && user) {
dispatch(getBalance());
}
if (status == "success") {
dispatch(getBalance());
dispatch(resetStatus());
}
}, [balance]);
if (user) {
return (
<div>
<h1>
cash balance: ${balance ? Math.round(balance.balance) : "error"}
</h1>
<MarketLong />
</div>
);
}
return (
<div>
Login
</div>
);
};
The above code does not work currently as when I console.log(status) on refresh is is idle and when I use marketLong it is loading but it never makes it to fulfilled so still the only way to update the balance that is displayed after an order is to refresh the page. I want to update the displayed balance without refreshing the page as refreshing the page will have to make two other API calls on top of the getBalance. I have left some comments in where I tried things like just putting the getBalance function inside the MarketLongFunc in the ordersSlice, I also tried returning it etc but that did nothing and I figured fixing this issue in the useEffect with the status' would be the best way to fix this but I am open to hearing other solutions besides creating redundant code where I just basically type out the getBalance func inside marketLongFunc.
Another way that almost works is just adding dispatch(getBalance()) after dispatch(MarketLongFunc(longItem)); in my MarketLong react component like the following:
const addNewLong = async (e) => {
e.preventDefault();
const longItem = {
userInput: req.ticker,
quotePrice: req.quotePrice,
quantity: Item.quantity,
};
dispatch(MarketLongFunc(longItem));
dispatch(getBalance());
};
The problem with this is the first order never gets updated but after that it updates incorrectly as the balance will be off by one buy order. I imagine this is due to getBalance gettting called before MarketLongFunc but without setting a manual setTimeout func which seems like a clunky solution, I am not sure how to fix that with redux, you would think something like : if (dispatch(MarketLongFunc(longItem))) {dispatch(getBalance())}, but maybe this way needs to be changed in the ordersSlice (which I had tried and was not able to get it to work).
There are many ways to solve this problem - I will describe an approximate solution:
export const MarketLongFunc = createAsyncThunk(
"/order/marketlong",
async (value, thunkAPI) => {
const token = thunkAPI.getState().auth.user.token;
const newObj = {
value: value,
token: token,
};
let url = `http://localhost:3001/api/orders/marketlong`;
const response = await axios.post(url, newObj);
//getBalance()
return;
}
);
export const getBalance = createAsyncThunk(
"/order/getBalance",
async (value, thunkAPI) => {
const token = thunkAPI.getState().auth.user.token;
const newObj = {
token: token,
};
let url = `http://localhost:3001/api/orders/getBalance`;
const response = await axios.post(url, newObj);
return response.data;
}
);
const initialState = {
value: null,
error: null,
balance: null,
status: "idle",
orderStatus: "idle",
balanceNeedsToBeUpdated: true // <--- HERE
};
export const ordersSlice = createSlice({
name: "orders",
initialState,
reducers: {
reset: (state) => initialState,
},
extraReducers(builder) {
builder
.addCase(MarketLongFunc.pending, (state, action) => {
state.orderStatus = "loading";
})
.addCase(MarketLongFunc.fulfilled, (state, action) => {
state.orderStatus = "idle";
state.balanceNeedsToBeUpdated = true; // < ----- HERE
// getBalance();
// state.balance = action.payload;
})
.addCase(MarketLongFunc.rejected, (state, action) => {
state.orderStatus = "failed";
state.error = action.error.message;
})
.addCase(getBalance.pending, (state, action) => {
state.status = "loading";
})
.addCase(getBalance.fulfilled, (state, action) => {
// state.status = "success";
state.balance = action.payload;
state.status = "idle";
state.balanceNeedsToBeUpdated = false; // <---- HERE
})
.addCase(getBalance.rejected, (state, action) => {
state.status = "failed";
state.error = action.error.message;
});
},
});
export const { reset } = ordersSlice.actions;
export default ordersSlice.reducer;
export const Orderform = () => {
const user = useSelector((state) => state.auth.user);
const balance = useSelector((state) => state.orders.balance);
const status = useSelector((state) => state.orders.status);
const orderStatus = useSelector((state) => state.orders.orderStatus);
const balanceNeedsToBeUpdated = useSelector((state) => state.orders.balanceNeedsToBeUpdated);
const dispatch = useDispatch();
useEffect(() => {
if (user && balanceNeedsToBeUpdated) { //< ----- HERE
dispatch(getBalance());
}
}, [user, balanceNeedsToBeUpdated]); // < ---- HERE
if (user) {
if (status == 'loading' || orderStatus == 'loading') {
return <div>loading</div>;
}
return (
<div>
<h1>
cash balance: ${balance ? Math.round(balance.balance) : "error"}
</h1>
<MarketLong />
</div>
);
}
return (
<div>
Login
</div>
);
};
//....
const addNewLong = async (e) => {
e.preventDefault();
const longItem = {
userInput: req.ticker,
quotePrice: req.quotePrice,
quantity: Item.quantity,
};
dispatch(MarketLongFunc(longItem)); // < --- HERE
};

Context returns undefined functions on any refresh in React Native App

I have an issue on any app refresh, ONE of my Contexts is returning undefined functions.
I have the following structure:
export default function AppWrapper() {
return (
<GlobalProvider>
<ChildProvider>
<App />
</ChildProvider>
</GlobalProvider>
);
}
I am getting undefined on functions from ChildProvider, which looks like this:
const INITIAL_STATE = {
orders: [],
error: null,
};
const ChildContext = React.createContext({ ...INITIAL_STATE });
const ChildConsumer = ChildContext.Consumer;
const OrderProvider = (props) => {
const { children } = props;
const { store, userId } = useContext(GlobalContext);
const [state, setState] = React.useReducer((state, newState) => {
const combinedState = { ...state, ...newState };
return combinedState;
}, INITIAL_STATE);
const getDataFromStore = async () => {
if (store?.id) {
try {
const { error, data } = await getOrdersByStore({store.id});
if (data) {
const data1 = <iterating through data>;
await setState({ orders: data1 });
} else {
await setState({ error: error });
}
} catch (e) {
await setState({ error: e });
}
}
};
const actions = { getDataFromStore};
return <ChildContext.Provider value={{ ...state, ...actions }}>{children}</ChildContext.Provider>;
};
export { ChildContext, ChildConsumer, ChildProvider };
And in Home.js, I call these functions as such:
const { getDataFromStore } = useContext(ChildContext)
useEffect(() => {
const getOrders = async () => {
store?.name && (await getDataFromStore());
};
getOrders();
}, [store]);
And in Home.js is where that function (and any function defined in ChildContext) is undefined on any refresh.
Some Details:
It is not a spelling error, or 'can't find file' error.
The only thing I am currently storing in session is the auth token.
Everything from state is defined (even if in its INITIAL_STATE form)
Wherever I call the undefined function, I use async/await
I do not actually use the Consumer anywhere
The AppWrapper, GlobalContext and ChildContext are all nested inside a context folder. App.js is in the root directory.

Firebase - return the value from the onSnapshot event in function

I am trying to return the value from function that has the onSnapshot() event but keep getting this weird error. Basically, I call this action and return the data from it like I would in any other function. But I keep getting this error and I do not know how to fix it.
This is the error
Uncaught TypeError: Cannot add property 0, object is not extensible
at Array.push (<anonymous>)
This the function
export const getQuestions = () => {
var questions = [];
onSnapshot(collection(firebaseDatabase, "questions"), (querySnapshot) => {
querySnapshot.docs.forEach((doc) => {
if (doc.data() !== null) {
questions.push(doc.data());
}
});
});
return questions;
};
Also this function is used with Redux Thunk and Redux Toolkit.
import { createSlice, createAsyncThunk } from "#reduxjs/toolkit";
import { getQuestions } from "../../utils/firebase-functions/firebase-functions";
export const getAllQuestions = createAsyncThunk(
"allQuestions/getAllQuestions",
async () => {
const response = getQuestions();
return response;
}
);
export const allQuestionsSlice = createSlice({
name: "allQuestions",
initialState: {
allQuestions: [],
loading: false,
error: null,
},
extraReducers: {
[getAllQuestions.pending]: (state) => {
state.loading = true;
state.error = null;
},
[getAllQuestions.fulfilled]: (state, action) => {
state.allQuestions = action.payload;
state.loading = false;
state.error = null;
},
[getAllQuestions.rejected]: (state, action) => {
state.loading = false;
state.error = action.payload;
},
},
});
export default allQuestionsSlice.reducer;
Where it is dispatched
const dispatch = useDispatch();
const tabContentData = useSelector(
(state) => state.allQuestions.allQuestions
);
useEffect(() => {
dispatch(getAllQuestions());
}, [dispatch]);
console.log(tabContentData);
You can try returning a promise when the data is being fetch for first time as shown below:
let dataFetched = false;
export const getQuestions = () => {
return new Promise((resolve, reject) => {
onSnapshot(collection(firebaseDatabase, "questions"), (querySnapshot) => {
querySnapshot.docs.forEach((doc) => {
if (doc.data() !== null) {
questions.push(doc.data());
}
});
if (!dataFetched) {
// data was fetched first time, return all questions
const questions = querySnapshot.docs.map(q => ({ id: q.id, ...q.data()}))
resolve(questions)
dataFetched = true;
} else {
// Questions already fetched,
// TODO: Update state with updates received
}
});
})
};
getQuestions() now returns a Promise so add an await here:
const response = await getQuestions();
For updates received later, you'll have to update them directly in your state.

How to get react component with useReducer to rerender after axios call?

I am trying to learn state management with the useReducer hook so I have built a simple app that calls the pokeAPI. The app should display a random pokemon, and add more pokemons to the screen as the 'capture another' button is pressed.
However, it rerenders the component with the initialized and empty Card object before populating the Card from the axios call. I've tried at least 3 different solutions based on posts from stackoverflow.
In each attempt I have gotten the same result: the app displays an undefined card on, even though the state is updated and not undefined, it just was updated slightly after the rerendering. When clicked again that prior undefined gets properly rendered but there is now a new card displayed as undefined.
I am still getting the hang of react hooks (no pun intended!), async programming, and JS in general.
Here is the app:
https://stackblitz.com/edit/react-ts-mswxjv?file=index.tsx
Here is the code from my first try:
//index.tsx
const getRandomPokemon = (): Card => {
var randomInt: string;
randomInt = String(Math.floor(898 * Math.random()));
let newCard: Card = {};
PokemonDataService.getCard(randomInt)
.then((response) => {
//omitted for brevity
})
.catch((error) => {
//omitted
});
PokemonDataService.getSpecies(randomInt)
.then((response) => {
//omitted
})
.catch((error) => {
//omitted
});
return newCard;
};
const App = (props: AppProps) => {
const [deck, dispatch] = useReducer(cardReducer, initialState);
function addCard() {
let newCard: Card = getRandomPokemon();
dispatch({
type: ActionKind.Add,
payload: newCard,
});
}
return (
<div>
<Deck deck={deck} />
<CatchButton onClick={addCard}>Catch Another</CatchButton>
</div>
);
};
//cardReducer.tsx
export function cardReducer(state: Card[], action: Action): Card[] {
switch (action.type) {
case ActionKind.Add: {
let clonedState: Card[] = state.map((item) => {
return { ...item };
});
clonedState = [...clonedState, action.payload];
return clonedState;
}
default: {
let clonedState: Card[] = state.map((item) => {
return { ...item };
});
return clonedState;
}
}
}
//Deck.tsx
//PokeDeck and PokeCard are styled-components for a ul and li
export const Deck = ({ deck }: DeckProps) => {
useEffect(() => {
console.log(`useEffect called in Deck`);
}, deck);
return (
<PokeDeck>
{deck.map((card) => (
<PokeCard>
<img src={card.image} alt={`image of ${card.name}`} />
<h2>{card.name}</h2>
</PokeCard>
))}
</PokeDeck>
);
};
I also experimented with making the function that calls Axios a promise so I could chain the dispatch call with a .then.
//index.tsx
function pokemonPromise(): Promise<Card> {
var randomInt: string;
randomInt = String(Math.floor(898 * Math.random()));
let newCard: Card = {};
PokemonDataService.getCard(randomInt)
.then((response) => {
// omitted
})
.catch((error) => {
return new Promise((reject) => {
reject(new Error('pokeAPI call died'));
});
});
PokemonDataService.getSpecies(randomInt)
.then((response) => {
// omitted
})
.catch((error) => {
return new Promise((reject) => {
reject(new Error('pokeAPI call died'));
});
});
return new Promise((resolve) => {
resolve(newCard);
});
}
const App = (props: AppProps) => {
const [deck, dispatch] = useReducer(cardReducer, initialState);
function asyncAdd() {
let newCard: Card;
pokemonPromise()
.then((response) => {
newCard = response;
console.log(newCard);
})
.then(() => {
dispatch({
type: ActionKind.Add,
payload: newCard,
});
})
.catch((err) => {
console.log(`asyncAdd failed with the error \n ${err}`);
});
}
return (
<div>
<Deck deck={deck} />
<CatchButton onClick={asyncAdd}>Catch Another</CatchButton>
</div>
);
};
I also tried to have it call it with a side effect using useEffect hook
//App.tsx
const App = (props: AppProps) => {
const [deck, dispatch] = useReducer(cardReducer, initialState);
const [catchCount, setCatchCount] = useState(0);
useEffect(() => {
let newCard: Card;
pokemonPromise()
.then((response) => {
newCard = response;
})
.then(() => {
dispatch({
type: ActionKind.Add,
payload: newCard,
});
})
.catch((err) => {
console.log(`asyncAdd failed with the error \n ${err}`);
});
}, [catchCount]);
return (
<div>
<Deck deck={deck} />
<CatchButton onClick={()=>{setCatchCount(catchCount + 1)}>Catch Another</CatchButton>
</div>
);
};
So there are a couple of things with your code, but the last version is closest to being correct. Generally you want promise calls inside useEffect. If you want it to be called once, use an empty [] dependency array. https://reactjs.org/docs/hooks-effect.html (ctrl+f "once" and read the note, it's not that visible). Anytime the dep array changes, the code will be run.
Note: you'll have to change the calls to the Pokemon service as you're running two async calls without awaiting either of them. You need to make getRandomPokemon async and await both calls, then return the result you want. (Also you're returning newCard but not assigning anything to it in the call). First test this by returning a fake data in a promise like my sample code then integrate the api if you're having issues.
In your promise, it returns a Card which you can use directly in the dispatch (from the response, you don't need the extra step). Your onclick is also incorrectly written with the brackets. Here's some sample code that I've written and seems to work (with placeholder functions):
type Card = { no: number };
function someDataFetch(): Promise<void> {
return new Promise((resolve) => setTimeout(() => resolve(), 1000));
}
async function pokemonPromise(count: number): Promise<Card> {
await someDataFetch();
console.log("done first fetch");
await someDataFetch();
console.log("done second fetch");
return new Promise((resolve) =>
setTimeout(() => resolve({ no: count }), 1000)
);
}
const initialState = { name: "pikachu" };
const cardReducer = (
state: typeof initialState,
action: { type: string; payload: Card }
) => {
return { ...state, name: `pikachu:${action.payload.no}` };
};
//App.tsx
const App = () => {
const [deck, dispatch] = useReducer(cardReducer, initialState);
const [catchCount, setCatchCount] = useState(0);
useEffect(() => {
pokemonPromise(catchCount)
.then((newCard) => {
dispatch({
type: "ActionKind.Add",
payload: newCard
});
})
.catch((err) => {
console.log(`asyncAdd failed with the error \n ${err}`);
});
}, [catchCount]);
return (
<div>
{deck.name}
<button onClick={() => setCatchCount(catchCount + 1)}>
Catch Another
</button>
</div>
);
};

How to wait until context value is set?

I'm trying to render a header.
First, in InnerList.js, I make an API call, and with the data from the API call, I set a list in context.
Second, in Context.js, I take the list and set it to a specific data.
Then, in InnerListHeader.js, I use the specific data to render within the header.
Problem: I currently get a TypeError undefined because the context is not set before rendering. Is there a way to wait via async or something else for the data to set before loading?
My code block is below. I've been looking through a lot of questions on StackOverflow and blogs but to no avail. Thank you!
InnerList.js
componentDidMount() {
const { dtc_id } = this.props.match.params;
const {
setSpecificDtcCommentList,
} = this.context;
MechApiService.getSpecificDtcCommentList(dtc_id)
.then(res =>
setSpecificDtcCommentList(res)
)
}
renderSpecificDtcCommentListHeader() {
const { specificDtc = [] } = this.context;
return (
<InnerDtcCommentListItemHeader key={specificDtc.id} specificDtc={specificDtc} />
)
}
Context.js
setSpecificDtcCommentList = (specificDtcCommentList) => {
this.setState({ specificDtcCommentList })
this.setSpecificDtc(specificDtcCommentList)
}
setSpecificDtc = (specificDtcCommentList) => {
this.setState({ specificDtc: specificDtcCommentList[0] })
}
InnerListHeader.js
render() {
const { specificDtc } = this.props;
return (
<div>
<div className="InnerDtcCommentListItemHeader__comment">
{specificDtc.dtc_id.dtc}
</div>
</div>
);
}
In general, you should always consider that a variable can reach the rendering stage without a proper value (e.g. unset). It is up to you prevent a crash on that.
For instance, you could rewrite you snippet as follows:
render() {
const { specificDtc } = this.props;
return (
<div>
<div className="InnerDtcCommentListItemHeader__comment">
{Boolean(specificDtc.dtc_id) && specificDtc.dtc_id.dtc}
</div>
</div>
);
}
When you make an api call you can set a loader while the data is being fetched from the api and once it is there you show the component that will render that data.
In your example you can add a new state that will pass the api call status to the children like that
render() {
const { specificDtc, fetchingData } = this.props;
if (fetchingData){
return <p>Loading</p>
}else{
return (
<div>
<div className="InnerDtcCommentListItemHeader__comment">
{specificDtc.dtc_id.dtc}
</div>
</div>
);
}
}
``
in my case, i am calling external api to firebase which lead to that context pass undefined for some values like user. so i have used loading set to wait untile the api request is finished and then return the provider
import { createContext, useContext, useEffect, useState } from 'react';
import {
createUserWithEmailAndPassword,
signInWithEmailAndPassword,
signOut,
onAuthStateChanged,
GoogleAuthProvider,
signInWithPopup,
updateProfile
} from 'firebase/auth';
import { auth } from '../firebase';
import { useNavigate } from 'react-router';
import { create_user_db, get_user_db } from 'api/UserAPI';
import { CircularProgress, LinearProgress } from '#mui/material';
import Loader from 'ui-component/Loader';
const UserContext = createContext();
export const AuthContextProvider = ({ children }) => {
const [user, setUser] = useState();
const [user_db, setUserDB] = useState();
const [isAuthenticated, setIsAuthenticated] = useState(false);
const [loading, setLoading] = useState(true);
const navigate = useNavigate();
const createUser = async (email, password) => {
const user = await createUserWithEmailAndPassword(auth, email, password);
};
const signIn = (email, password) => {
return signInWithEmailAndPassword(auth, email, password)
.then(() => setIsAuthenticated(true))
.catch(() => setIsAuthenticated(false));
};
const googleSignIn = async () => {
const provider = new GoogleAuthProvider();
await signInWithPopup(auth, provider)
.then(() => setIsAuthenticated(true))
.catch(() => setIsAuthenticated(false));
};
const logout = () => {
setUser();
return signOut(auth).then(() => {
window.location = '/login';
});
};
const updateUserProfile = async (obj) => {
await updateProfile(auth.currentUser, obj);
return updateUser(obj);
};
const updateUser = async (user) => {
return setUser((prevState) => {
return {
...prevState,
...user
};
});
};
useEffect(() => {
const unsubscribe = onAuthStateChanged(auth, async (currentUser) => {
setLoading(true);
if (currentUser) {
const user_db = await get_user_db({ access_token: currentUser.accessToken });
setUserDB(user_db);
setUser(currentUser);
setIsAuthenticated(true);
}
setLoading(false);
});
return () => {
unsubscribe();
};
}, []);
if (loading) return <Loader />;
return (
<UserContext.Provider value={{ createUser, user, user_db, isAuthenticated, logout, signIn, googleSignIn, updateUserProfile }}>
{children}
</UserContext.Provider>
);
};
export const UserAuth = () => {
return useContext(UserContext);
};

Categories