https://www.googleapis.com/calendar/v3

// 示例 Swift 代码 - 初始化 GIDSignIn
GIDSignIn.sharedInstance.clientID = "YOUR_CLIENT_ID"
GIDSignIn.sharedInstance.scopes = ["https://www.googleapis.com/auth/calendar"]
GIDSignIn.sharedInstance.delegate = self

pod 'GoogleAPIClientForREST/Calendar', '~> 1.3'
pod 'GoogleSignIn', '~> 5.0'

func insertEvent(calendarId: String, event: GTLRCalendar_Event) {
    let query = GTLRCalendarQuery_EventsInsert.query(withObject: event, calendarId: calendarId)
    
    service.executeQuery(query) { (ticket, response, error) in
        if let error = error {
            print("Error: \(error.localizedDescription)")
            return
        }
        if let event = response as? GTLRCalendar_Event {
            print("Event created: \(event.summary ?? "No title")")
        }
    }
}

if let error = error as NSError? {
    print("Error domain: \(error.domain)")
    print("Error code: \(error.code)")
    print("User info: \(error.userInfo)")
}