I want to access to the calendar to read/create event from the user if he agrees.
I've followed the guide https://developers.google.com/google-apps/calendar/v3/sync I've actived the api with my google account. Then use the OAuth 2.0 to get a code and the token. When I follow the test, I use another account to simulate a random user.
Arrived at the lecture of the agenda, I get this error:
Error calling GET https://www.googleapis.com/calendar/v3/calendars/primary/events?maxResults=10&orderBy=startTime&singleEvents=true&timeMin=2016-06-14T11%3A28%3A25%2B02%3A00: (403) Access Not Configured. Calendar API has not been used in project 1056... before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/calendar/overview?project=1056... then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.
It seems legit but I don't want the user to active the api on his side... What am I missing?