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import { ResponseType } from "expo-auth-session";
import * as Google from "expo-auth-session/providers/google";
import Constants from "expo-constants";
import * as WebBrowser from "expo-web-browser";
import { useEffect, useMemo, useState } from "react";
import { useAuth } from "./auth";
import { t } from "./locales";
WebBrowser.maybeCompleteAuthSession();
type GoogleClientIds = {
iosClientId?: string;
androidClientId?: string;
webClientId?: string;
};
function getGoogleClientIds(): GoogleClientIds {
const env = (process as any)?.env || {};
const extra =
(Constants.manifest as any)?.extra ||
(Constants.expoConfig as any)?.extra ||
{};
return {
iosClientId:
env.EXPO_PUBLIC_GOOGLE_IOS_CLIENT_ID || extra.GOOGLE_IOS_CLIENT_ID,
androidClientId:
env.EXPO_PUBLIC_GOOGLE_ANDROID_CLIENT_ID ||
extra.GOOGLE_ANDROID_CLIENT_ID,
webClientId:
env.EXPO_PUBLIC_GOOGLE_WEB_CLIENT_ID ||
extra.GOOGLE_WEB_CLIENT_ID ||
env.EXPO_PUBLIC_GOOGLE_EXPO_CLIENT_ID ||
extra.GOOGLE_EXPO_CLIENT_ID,
};
}
export function useGoogleAuth() {
const { signInWithGoogle } = useAuth();
const [isLoading, setIsLoading] = useState(false);
const [error, setError] = useState("");
const clientIds = useMemo(() => getGoogleClientIds(), []);
const [request, response, promptAsync] = Google.useAuthRequest({
iosClientId: clientIds.iosClientId,
androidClientId: clientIds.androidClientId,
webClientId: clientIds.webClientId,
responseType: ResponseType.IdToken,
scopes: ["openid", "profile", "email"],
selectAccount: true,
});
useEffect(() => {
const run = async () => {
if (!response) return;
if (response.type === "success") {
const idToken =
response.params?.id_token || response.authentication?.idToken;
if (!idToken) {
setError(t("googleMissingIdToken"));
setIsLoading(false);
return;
}
const result = await signInWithGoogle(idToken);
if (!result.success) {
setError(result.reason || t("googleSignInError"));
}
setIsLoading(false);
return;
}
if (response.type === "error") {
setError(response.error?.message || t("googleSignInError"));
}
// On cancel/dismissed/locked, just reset loading and keep the current screen state.
setIsLoading(false);
};
run().catch(() => {
setError(t("googleSignInError"));
setIsLoading(false);
});
}, [response, signInWithGoogle]);
const continueWithGoogle = async () => {
setError("");
if (!request) {
setError(t("googleConfigMissing"));
return;
}
setIsLoading(true);
try {
const result = await promptAsync();
if (result.type === "cancel" || result.type === "dismiss") {
setIsLoading(false);
}
} catch {
setError(t("googleSignInError"));
setIsLoading(false);
}
};
return {
continueWithGoogle,
isLoading,
error,
};
}
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