Trying to use the gapi function to implement a google authentication (oauth2) but the code below fails
<html>
<head></head>
<body>
<script type="text/javascript">
function handleClientLoad() {
// Loads the client library and the auth2 library together for efficiency.
// Loading the auth2 library is optional here since `gapi.client.init` function will load
// it if not already loaded. Loading it upfront can save one network request.
gapi.load('client:auth2', initClient);
}
function initClient() {
// Initialize the client with API key and People API, and initialize OAuth with an
// OAuth 2.0 client ID and scopes (space delimited string) to request access.
gapi.client.init({
apiKey: 'APP_ID',
discoveryDocs: ["https://people.googleapis.com/$discovery/rest?version=v1"],
clientId: 'CLEINT_ID.apps.googleusercontent.com',
scope: 'profile'
}).then(function () {
// Listen for sign-in state changes.
gapi.auth2.getAuthInstance().isSignedIn.listen(updateSigninStatus);
// Handle the initial sign-in state.
updateSigninStatus(gapi.auth2.getAuthInstance().isSignedIn.get());
});
}
function updateSigninStatus(isSignedIn) {
// When signin status changes, this function is called.
// If the signin status is changed to signedIn, we make an API call.
if (isSignedIn) {
makeApiCall();
}
}
function handleSignInClick(event) {
// Ideally the button should only show up after gapi.client.init finishes, so that this
// handler won't be called before OAuth is initialized.
gapi.auth2.getAuthInstance().signIn();
}
function handleSignOutClick(event) {
gapi.auth2.getAuthInstance().signOut();
}
function makeApiCall() {
// Make an API call to the People API, and print the user's given name.
gapi.client.people.people.get({
'resourceName': 'people/me',
'requestMask.includeField': 'person.names'
}).then(function(response) {
console.log('Hello, ' + response.result.names[0].givenName);
}, function(reason) {
console.log('Error: ' + reason.result.error.message);
});
}
</script>
<script async defer src="https://apis.google.com/js/api.js"
onload="this.onload=function(){};handleClientLoad()"
onreadystatechange="if (this.readyState === 'complete') this.onload()">
</script>
<button id="signin-button" onclick="handleSignInClick()">Sign In</button>
<button id="signout-button" onclick="handleSignOutClick()">Sign Out</button>
</body>
</html>
and shows an error
Failed to execute 'postMessage' on 'DOMWindow': The target origin provided ('file://') does not match the recipient window's origin ('null').
Where am I going wrong?
