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useTwitterAndFirebaseAuth in expo react native
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import React, { useCallback, useEffect, useState } from 'react'; | |
import { useTwitter } from 'react-native-simple-twitter'; | |
const useTwitterAndFirebaseAuth = () => { | |
# 認証済みかどうかを確認している最中か否か | |
const [signInChecking, setSignInChecking] = useState<boolean>(true); | |
# 認証済みか否か | |
const [signedIn, setSignedIn] = useState<boolean>(false); | |
# twitter user data | |
const [twitterUser, setTwitterUser] = useState<firebase.firestore.DocumentData>(); | |
# firestoreで使うTwitterでログインしたユーザーの情報を保存するコレクション名 | |
cosnt twitterUserCollectionName = 'TwitterUser'; | |
# react-native-simple-twitter | |
const { twitter, TWModal } = useTwitter({ | |
onSuccess:(user, accessToken) => { | |
onTwitterLoginSuccess(user, accessToken) | |
} | |
}); | |
const setCurrentTwitterUser = async () => { | |
try{ | |
const user = firebase.auth().currentUser; | |
if(user){ | |
# ログイン済みユーザーの、Twitter上での情報を取得する | |
const doc = await firebase.firestore().collection(twitterUserCollectionName).doc(user.uid).get(); | |
if(doc){ | |
setTwitterUser(doc.data()); | |
setSignInChecking(false); | |
setSignedIn(true); | |
} | |
}else{ | |
setSignInChecking(false); | |
setSignedIn(false); | |
} | |
}catch(e){ | |
console.log(e); | |
} | |
} | |
# hook initialize | |
useEffect(() => { | |
# 重要!! | |
let isMounted = true; | |
twitter.setConsumerKey(config.twitter.apiKey, config.twitter.apiSecret); | |
const unsubscribe = firebase.auth().onAuthStateChanged(() => { | |
# 重要!! | |
# isMounted === trueのときにしかsetStateするべきではない | |
if(isMounted){ | |
setCurrentTwitterUser(); | |
} | |
}); | |
# 重要!! | |
# cleanup関数をreturnする | |
return () => { | |
isMounted = false; | |
unsubscribe(); | |
}; | |
}, []) | |
# twitter login modal dialogを開く関数 | |
const toTwitterLogin = useCallback(async () => { | |
try { | |
setSignInChecking(true); | |
setSignedIn(false); | |
await twitter.login(); | |
} catch(e) { | |
setSignInChecking(false); | |
setSignedIn(false); | |
console.log(e.errors); | |
} | |
}, []); | |
# twitterへのログイン成功時に呼ばれるコールバック関数 | |
const onTwitterLoginSuccess = useCallback(async (user, accessToken) => { | |
setSignInChecking(true); | |
setSignedIn(false); | |
// firebaseで認証する | |
var credential = firebase.auth.TwitterAuthProvider.credential(accessToken.oauth_token, accessToken.oauth_token_secret); | |
await firebase.auth().signInWithCredential(credential); | |
// firestoreにユーザー情報をつっこむ | |
const userData = Object.assign(user, accessToken); | |
if(firebase.auth().currentUser){ | |
const uid = firebase.auth().currentUser?.uid; | |
await firebase.firestore().collection(twitterUserCollectionName).doc(uid).set(userData, { merge: true }) | |
setSignInChecking(false); | |
setSignedIn(true); | |
} | |
}, []); | |
# ログアウトする関数 | |
const toTwitterLogout = useCallback(async () => { | |
await firebase.auth().signOut(); | |
}, []); | |
return {signInChecking, setSignInChecking, signedIn, setSignedIn, TWModal, toTwitterLogin, toTwitterLogout, twitterUser}; | |
} |
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