Rust

List Google Calendars

See more Google Calendar Examples

Demonstrates how to list the Google Calendars for an account. Rust

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// This example uses a previously obtained access token having permission for the 
// Google Calendar scope.

// In this example, Get Google Calendar OAuth2 Access Token, the access
// token was saved to a JSON file.  This example fetches the access token from the file..
let json_token = chilkat::JsonObject::new();
let _ = json_token.load_file("qa_data/tokens/googleCalendar.json").is_ok();
if !json_token.has_member("access_token") {
    println!("No access token found.");
    return;
}

let http = chilkat::Http::new();
http.set_auth_token(&json_token.string_of("access_token").unwrap_or_default());

let Ok(json_response) = http.quick_get_str("https://www.googleapis.com/calendar/v3/users/me/calendarList") else {
    println!("{}", http.last_error_text());
    return;
};

println!("{}", json_response);
println!("-----------------------------");

// This is a sample JSON response:
// (Sample code to iterate over the JSON response is shown below.)

// {
//  "kind": "calendar#calendarList",
//  "etag": "\"p32cfpufit76da0g\"",
//  "nextSyncToken": "CJj8-fLpzNUCEhhzdXBwb3J0QGNoaWxrYXRjbG91ZC5jb20=",
//  "items": [
//   {
//    "kind": "calendar#calendarListEntry",
//    "etag": "\"1465249947472000\"",
//    "id": "support@chilkatcloud.com",
//    "summary": "support@chilkatcloud.com",
//    "timeZone": "America/Chicago",
//    "colorId": "14",
//    "backgroundColor": "#9fe1e7",
//    "foregroundColor": "#000000",
//    "selected": true,
//    "accessRole": "owner",
//    "defaultReminders": [
//     {
//      "method": "popup",
//      "minutes": 10
//     }
//    ],
//    "notificationSettings": {
//     "notifications": [
//      {
//       "type": "eventCreation",
//       "method": "email"
//      },
//      {
//       "type": "eventChange",
//       "method": "email"
//      },
//      {
//       "type": "eventCancellation",
//       "method": "email"
//      },
//      {
//       "type": "eventResponse",
//       "method": "email"
//      }
//     ]
//    },
//    "primary": true
//   },
//   {
//    "kind": "calendar#calendarListEntry",
//    "etag": "\"1502373382732000\"",
//    "id": "#contacts@group.v.calendar.google.com",
//    "summary": "Contacts",
//    "timeZone": "America/Chicago",
//    "colorId": "13",
//    "backgroundColor": "#92e1c0",
//    "foregroundColor": "#000000",
//    "selected": true,
//    "accessRole": "reader",
//    "defaultReminders": []
//   },
//   {
//    "kind": "calendar#calendarListEntry",
//    "etag": "\"1502373376447000\"",
//    "id": "en.usa#holiday@group.v.calendar.google.com",
//    "summary": "Holidays in United States",
//    "timeZone": "America/Chicago",
//    "colorId": "8",
//    "backgroundColor": "#16a765",
//    "foregroundColor": "#000000",
//    "selected": true,
//    "accessRole": "reader",
//    "defaultReminders": []
//   }
//  ]
// }
// 

// Iterate over the JSON response..
let json = chilkat::JsonObject::new();
let _ = json.load(&json_response);

let num_calendars = json.size_of_array("items");
let mut i = 0;
while i < num_calendars {
    println!("--- {} ---", i);
    json.set_i(i);
    println!("kind: {}", json.string_of("items[i].kind").unwrap_or_default());
    println!("id: {}", json.string_of("items[i].id").unwrap_or_default());

    // Examine the notification settings, if any..
    let num_settings = json.size_of_array("items[i].notificationSettings.notifications");
    if num_settings > 0 {
        let mut j = 0;
        while j < num_settings {
            json.set_j(j);
            println!("Notification Type: {}", json.string_of("items[i].notificationSettings.notifications[j].type").unwrap_or_default());
            println!("Notification Method: {}", json.string_of("items[i].notificationSettings.notifications[j].method").unwrap_or_default());
            j = j + 1;
        }

    }

    i = i + 1;
}