I have a code where I read the file data as blob. I have implemented using the old gapi, how do I migrate from the older Google Sign-In platform library to the newer Google Identity Services library for authentication.
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>Google Picker Example</title>
</head>
<body>
<button id="authorize_button" style="display: none;">Authorize</button>
<button id="signout_button" style="display: none;">Sign Out</button>
<div id="result"></div>
<script type="text/javascript" src="script.js"></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>
<script>
const API_KEY = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx';
const CLIENT_ID = '995979103146-6qdmadbu7ha5ptrthsg8uqonkpplvc8e.apps.googleusercontent.com';
const appId = "995979103146";
const SCOPES = ["https://www.googleapis.com/auth/drive"];
const DISCOVERY_DOCS = [
"https://www.googleapis.com/discovery/v1/apis/drive/v3/rest",
];
const authorizeButton = document.getElementById("authorize_button");
const signoutButton = document.getElementById("signout_button");
// Use the Google API Loader script to load the google.picker script.
function handleClientLoad() {
gapi.load("client:auth2:picker", initClient);
}
function initClient() {
gapi.client.init({
apiKey: API_KEY,
clientId: CLIENT_ID,
discoveryDocs: DISCOVERY_DOCS,
scope: SCOPES[0]
})
.then(
function () {
// Listen for sign-in state changes.
gapi.auth2.getAuthInstance().isSignedIn.listen(handleSignIn);
// Handle the initial sign-in state.
handleSignIn(gapi.auth2.getAuthInstance().isSignedIn.get());
authorizeButton.onclick = handleAuthClick;
signoutButton.onclick = handleSignoutClick;
},
function (error) {
appendPre(JSON.stringify(error, null, 2));
}
);
}
function handleSignIn(isSignedIn) {
if (isSignedIn) {
authorizeButton.style.display = "none";
signoutButton.style.display = "block";
createPicker();
} else {
authorizeButton.style.display = "block";
signoutButton.style.display = "none";
}
}
function handleAuthClick(event) {
gapi.auth2.getAuthInstance().signIn();
}
function handleSignoutClick(event) {
gapi.auth2.getAuthInstance().signOut();
}
function createPicker() {
const token = gapi.client.getToken().access_token
if (token) {
let view = new google.picker.View(google.picker.ViewId.DOCS);
view.setMimeTypes("image/png,image/jpeg,image/jpg");
let picker = new google.picker.PickerBuilder()
.enableFeature(google.picker.Feature.NAV_HIDDEN)
.enableFeature(google.picker.Feature.MULTISELECT_ENABLED)
.setAppId(appId)
.setOAuthToken(token)
.addView(view)
.addView(new google.picker.DocsUploadView())
.setDeveloperKey(API_KEY)
.setCallback(getFile)
.build();
picker.setVisible(true);
}
}
function getFile(pickerResp) {
console.log(JSON.stringify(pickerResp))
if(pickerResp.action == "picked") {
gapi.client.drive.files
.get({
fileId: pickerResp.docs[0].id,
alt: 'media'
})
.then(resp => {
console.log("fetch response", resp.status)
let binary = resp.body
// EDIT - addition from Gabrielle vvvv
let l = binary.length
let array = new Uint8Array(l);
for (var i = 0; i<l; i++){
array[i] = binary.charCodeAt(i);
}
let blob = new Blob([array], {type: 'application/octet-stream'});
console.log(blob)
// EDIT - addition from Gabrielle ^^^^
});
}
}
</script>
</body>
</html>
It is really easy to implement the new Google Identity Library. As you can compare here, you only have to change a few things.
This example is the easiest approach (implicit flow):
<html>
<body>
<script
src="https://accounts.google.com/gsi/client"
onload="initClient()"
async
defer
></script>
<script>
var client;
var access_token;
function loadPicker() {
gapi.load('picker', {'callback': ()=>console.log("Picker Loaded")});
}
function initClient() {
client = google.accounts.oauth2.initTokenClient({
client_id: "<CLIENT_ID>",
scope:
"https://www.googleapis.com/auth/drive.file",
callback: (tokenResponse) => {
access_token = tokenResponse.access_token;
},
});
}
function getToken() {
client.requestAccessToken();
}
function revokeToken() {
google.accounts.oauth2.revoke(access_token, () => {console.log('access token revoked')});
}
function onPickerApiLoad() {
var picker = new google.picker.PickerBuilder()
.addView(google.picker.ViewId.DOCS)
.setOAuthToken(access_token)
.build();
picker.setVisible(true);
}
</script>
<!-- The Google API Loader script. -->
<h1>Google Identity Services Authorization Token model</h1>
<button onclick="getToken();">Get access token</button><br /><br />
<button onclick="onPickerApiLoad()">Load picker</button>
<script src="https://apis.google.com/js/api.js?onload=loadPicker"></script>
</body>
</html>