(Objective-C) Insert a New Google Calendar Event

See more Google Calendar Examples

Demonstrates how to insert a new Google Calendar event.

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#import <CkoJsonObject.h>
#import <CkoHttp.h>
#import <NSString.h>
#import <CkoHttpResponse.h>

// 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..
CkoJsonObject *jsonToken = [[CkoJsonObject alloc] init];
BOOL success = [jsonToken LoadFile: @"qa_data/tokens/googleCalendar.json"];
if ([jsonToken HasMember: @"access_token"] == NO) {
    NSLog(@"%@",@"No access token found.");
    return;
}

CkoHttp *http = [[CkoHttp alloc] init];
http.AuthToken = [jsonToken StringOf: @"access_token"];

// Build a Google Calendar event:
CkoJsonObject *json = [[CkoJsonObject alloc] init];
json.EmitCompact = NO;
[json UpdateString: @"kind" value: @"calendar#event"];
[json UpdateString: @"summary" value: @"Eat Lou Malnati's Pizza"];
[json UpdateString: @"start.dateTime" value: @"2021-03-12T12:00:00-05:00"];
[json UpdateString: @"end.dateTime" value: @"2021-03-12T13:00:00-05:00"];

NSLog(@"%@",[json Emit]);

// This is the event JSON we'll be sending the HTTP POST:

// {
//   "kind": "calendar#event",
//   "summary": "Eat Lou Malnati's Pizza",
//   "start": {
//     "dateTime": "2021-03-12T12:00:00-05:00"
//   },
//   "end": {
//     "dateTime": "2021-03-12T13:00:00-05:00"
//   }
// }

NSString *url = @"https://www.googleapis.com/calendar/v3/calendars/{$calendarId}/events";
[http SetUrlVar: @"calendarId" value: @"primary"];
CkoHttpResponse *resp = [http PostJson3: url contentType: @"application/json" json: json];
if (http.LastMethodSuccess == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

CkoJsonObject *jsonResp = [[CkoJsonObject alloc] init];
jsonResp.EmitCompact = NO;
[jsonResp Load: resp.BodyStr];

if ([resp.StatusCode intValue] == 200) {
    // Success.
    // The newly created event resource JSON is returned.
    NSLog(@"%@",[jsonResp Emit]);
}
else {
    if ([resp.StatusCode intValue] == 401) {
        NSLog(@"%@",@"Try refreshing the access token and then retry...");
    }

    // Failed. 
    // Show the JSON error response.
    NSLog(@"%@",[jsonResp Emit]);
}

// A successful response body:

// {
//   "kind": "calendar#event",
//   "etag": "\"3004969011208000\"",
//   "id": "v7kvmsvsoms3hjl5uq423jqhb0",
//   "status": "confirmed",
//   "htmlLink": "https://www.google.com/calendar/event?eid=djdrdm1zdnNvbXMzaGpsNXVxNDIzanFoYjAgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
//   "created": "2017-08-11T20:48:25.000Z",
//   "updated": "2017-08-11T20:48:25.604Z",
//   "summary": "Eat Lou Malnati's Pizza",
//   "creator": {
//     "email": "support@chilkatcloud.com",
//     "self": true
//   },
//   "organizer": {
//     "email": "support@chilkatcloud.com",
//     "self": true
//   },
//   "start": {
//     "dateTime": "2017-08-12T12:00:00-05:00"
//   },
//   "end": {
//     "dateTime": "2017-08-12T13:00:00-05:00"
//   },
//   "iCalUID": "v7kvmsvsoms3hjl5uq423jqhb0@google.com",
//   "sequence": 0,
//   "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.v7kvmsvsoms3hjl5uq423jqhb0",
//   "reminders": {
//     "useDefault": true
//   }
// }