## How to set up user authentication for a Chrome Extension using the Chrome Identity API
1. Create a private key file, from which you can create the manifest key and Application ID, as detailed here:
https://stackoverflow.com/questions/23873623/obtaining-chrome-extension-id-for-development
2. Add the manifest key to "key" in manifest.json
3. Create a new project in Google Developer Console
https://console.developers.google.com/project
4. Go to "APIs & auth > Credentials" and create new client id for a Chrome Application using the Application ID generated in step 3.
5. Copy the Client ID to oauth2.client_id in the manifest.json
## Deprecated?
1. Create a new app on the Chrome Web Store Developer Dashboard
https://chrome.google.com/webstore/developer/dashboard
2. Click on "more info" and copy the public key to "key" in manifest.json. (or not needed because of next step...?)
## Resources
- http://stackoverflow.com/questions/25044936/chrome-identity-user-authentication-in-a-chrome-extension
chrome.identity.getAuthToken({
interactive: true
}, function(token) {
if (chrome.runtime.lastError) {
alert(chrome.runtime.lastError.message);
return;
}
var x = new XMLHttpRequest();
x.open('GET', 'https://www.googleapis.com/oauth2/v1/userinfo?alt=json&access_token=' + token);
x.onload = function() {
alert(x.response);
};
x.send();
});