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MSAL Auth Provider for React
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| import React, { | |
| createContext, | |
| useContext, | |
| useLayoutEffect, | |
| useState, | |
| } from "react"; | |
| import { | |
| InteractionRequiredAuthError, | |
| PublicClientApplication, | |
| } from "@azure/msal-browser"; | |
| import { MsalProvider } from "@azure/msal-react"; | |
| import { msalConfig } from "../config/authConfig"; | |
| const LOGIN_SCOPES = [`${msalConfig.auth.clientId}/.default`]; | |
| // Initialize MSAL client | |
| const msalInstance = new PublicClientApplication(msalConfig); | |
| type AuthContextType = { | |
| signIn: () => Promise<void>; | |
| signOut: () => void; | |
| refreshToken: () => Promise<string | undefined>; | |
| accessToken: string | undefined; | |
| }; | |
| const AuthContext = createContext<AuthContextType>({} as AuthContextType); | |
| const initializeMSAL = async () => { | |
| await msalInstance.initialize(); | |
| }; | |
| export const AuthProvider = ({ | |
| children, | |
| }: { | |
| children: JSX.Element | JSX.Element[]; | |
| }) => { | |
| const [accessToken, setAccessToken] = useState<string>(); | |
| useLayoutEffect(() => { | |
| initializeMSAL().then((response) => { | |
| msalInstance | |
| .handleRedirectPromise() | |
| .then((response) => { | |
| if (response !== null) { | |
| setAccessToken(response.accessToken); | |
| } else { | |
| const accounts = msalInstance.getAllAccounts(); | |
| if (accounts.length > 0) { | |
| msalInstance.setActiveAccount(accounts[0]); | |
| refreshToken(); | |
| } else { | |
| signIn(); | |
| } | |
| } | |
| }) | |
| .catch((error) => { | |
| console.error("Error processing redirect:", error); | |
| }); | |
| }); | |
| }, []); | |
| const signIn = async () => { | |
| const loginRequest = { scopes: LOGIN_SCOPES }; | |
| try { | |
| await msalInstance.loginRedirect(loginRequest); | |
| } catch (error) { | |
| console.error("Error signing in", error); | |
| } | |
| }; | |
| const signOut = () => { | |
| msalInstance.logoutRedirect(); | |
| }; | |
| const refreshToken = async (): Promise<string | undefined> => { | |
| await msalInstance.initialize(); | |
| const request = { scopes: LOGIN_SCOPES }; | |
| try { | |
| const response = await msalInstance.acquireTokenSilent(request); | |
| if (response && response.accessToken) { | |
| setAccessToken(response.accessToken); | |
| return response.accessToken; | |
| } | |
| } catch (error) { | |
| console.error("Error refreshing token", error); | |
| if (error instanceof InteractionRequiredAuthError) { | |
| msalInstance.acquireTokenRedirect(request); | |
| } | |
| } | |
| }; | |
| return ( | |
| <MsalProvider instance={msalInstance}> | |
| <AuthContext.Provider | |
| value={{ signIn, signOut, refreshToken, accessToken }} | |
| > | |
| {children} | |
| </AuthContext.Provider> | |
| </MsalProvider> | |
| ); | |
| }; | |
| // Hook to use auth context | |
| export const useAuth = () => useContext(AuthContext); |
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