Firebase onAuthStateChanged not running as expected in React App - reactjs

Question

So i am building a React+redux app using firebase. I'm using react-router onEnter callback function(checkAuth) for route protection.
export default function getRoutes (checkAuth) {
return (
<Router history={browserHistory}>
<Route path='/' component={MainContainer}>
<IndexRoute component = {HomeContainer} onEnter = {checkAuth}/>
<Route path='auth' component = {AuthenticateContainer} onEnter = {checkAuth} />
<Route path='feed' component = {FeedContainer} onEnter = {checkAuth} />
<Route path='logout' component = {LogoutContainer} />
</Route>
</Router>
)
}
the checkAuth function calls checkIfAuthed function to see if there is a currentUser.
function checkAuth (nextState, replace) {
const isAuthed = checkIfAuthed(store)
console.log('isAuthed from checkAuth method', isAuthed)
const nextPathName = nextState.location.pathname
console.log('nextPathName', nextPathName)
// debugger
if (nextPathName === '/' || nextPathName === 'auth') {
if (isAuthed === true) {
// debugger
replace('feed')
}
} else {
// debugger
if (isAuthed !== true) {
// debugger
replace('auth')
}
}
}
ReactDOM.render(
<Provider store = {store}>
{getRoutes(checkAuth)}
</Provider>,
document.getElementById('app')
)
The checkIfAuthed function looks like this:
export function checkIfAuthed (store) {
// debugger
// const user = firebase.auth().currentUser
firebase.auth().onAuthStateChanged((user) => {
console.log('isAuthed from on state changed', user)
// debugger
if (user === null) {
// debugger
return false
} else if (store.getState().isAuthed === false) {
// debugger
const userInfo = formatUserInfo(user.displayName, user.photoURL, user.uid)
// debugger
store.dispatch(authUser(user.uid))
// debugger
store.dispatch(fetchingUserSuccess(user.uid, userInfo))
// debugger
return true
}
// debugger
return true
})
}
However, const isAuthed is always undefined at runtime in the checkAuth() function.thus leading to replace("feed") never running. I was expecting it to be false or true.
Additionally if I instead use const user = firebase.auth().currentUser in the checkIfAuthed function the Replace function runs but this requires user to hit login button, whereas the firebase observer above automatically runs.

Answer 1

You can check here this implementation
The Service when we read the user auth and set the value to Redux https://github.com/x-team/unleash/blob/develop/app/services/authService.js
The reducer when set the user state to the redux state object https://github.com/x-team/unleash/blob/develop/app/reducers/userReducer.js
The action creators https://github.com/x-team/unleash/blob/develop/app/actions/UserActions.js
The login state check
https://github.com/x-team/unleash/blob/develop/app/components/UnleashApp.jsx#L17
The most important part is the authService, let me know any question