React Native

Google Calendar Search Events (List Events with Optional Query Parameters)

See more Google Calendar Examples

Demonstrates how to specify optional query parameters for listing events. This example uses the "q" parameter to free-text search for events, and uses the "timeMin" parameter to specify a lower bound for an event's end time. React Native

import { CkDateTime, Http, HttpRequest, JsonObject, StringBuilder } from '@chilkat/react-native'

async function chilkatExample() {
  // 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..
  const jsonToken = new JsonObject();
  jsonToken.loadFile('qa_data/tokens/googleCalendar.json');
  if (!jsonToken.hasMember('access_token')) {
    console.log('No access token found.');
    return;
  }

  const http = new Http();
  http.authToken = jsonToken.stringOf('access_token');

  // We'll want to build a URL with the query params..
  const sbUrl = new StringBuilder();
  sbUrl.append('https://www.googleapis.com/calendar/v3/calendars/{$calendarId}/events?');

  // Use the HTTP request object as a helper for creating the URL encoded query param list..
  const req = new HttpRequest();

  // Find events with the word "pizza".
  req.addParam('q', 'pizza');

  // Get events for the current date/time or later.
  const dt = new CkDateTime();
  dt.setFromCurrentSystemTime();
  req.addParam('timeMin', dt.getAsTimestamp(false));

  // Add these query params to the URL:
  sbUrl.append(req.getUrlEncodedParams());

  // Examine the URL..
  console.log(`URL: ${sbUrl.getAsString()}`);

  // The URL looks like this:
  // https://www.googleapis.com/calendar/v3/calendars/{$calendarId}/events?q=pizza&timeMin=2017-08-11T13%3A35%3A28Z

  // Let's get events in the primary calendar.  A calendar ID could have be used instead of "primary".
  http.setUrlVar('calendarId', 'primary');
  const sbResponse = new StringBuilder();
  try {
    await http.quickGetSbAsync(sbUrl.getAsString(), sbResponse);
  } catch {
    console.log(http.lastErrorText);
    return;
  }

  if (http.lastStatus !== 200) {
    // Note: If a 401 unauthorized response is received, it likely means that the OAuth2 access token needs
    // to be refreshed or re-fetched.
    console.log(`Error response status: ${http.lastStatus}`);
    console.log(sbResponse.getAsString());
    return;
  }

  console.log(sbResponse.getAsString());

  // A sample JSON response:
  // (Code for parsing the Google Calendar events is shown below.)

  // {
  //  "kind": "calendar#events",
  //  "etag": "\"p32cafkumkb7ta0g\"",
  //  "summary": "support@chilkatcloud.com",
  //  "updated": "2017-08-11T13:19:48.143Z",
  //  "timeZone": "America/Chicago",
  //  "accessRole": "owner",
  //  "defaultReminders": [
  //   {
  //    "method": "popup",
  //    "minutes": 10
  //   }
  //  ],
  //  "nextSyncToken": "CJin09aiz9UCEJin09aiz9UCGAU=",
  //  "items": [
  //   {
  //    "kind": "calendar#event",
  //    "etag": "\"3004915160212000\"",
  //    "id": "02pv1cpdp7vm11htnfi3ii7iie",
  //    "status": "confirmed",
  //    "htmlLink": "https://www.google.com/calendar/event?eid=MDJwdjFjcGRwN3ZtMTFodG5maTNpaTdpaWUgc3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t",
  //    "created": "2017-08-11T13:19:40.000Z",
  //    "updated": "2017-08-11T13:19:40.106Z",
  //    "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": "02pv1cpdp7vm11htnfi3ii7iie@google.com",
  //    "sequence": 0,
  //    "hangoutLink": "https://plus.google.com/hangouts/_/chilkatcloud.com/support?hceid=c3VwcG9ydEBjaGlsa2F0Y2xvdWQuY29t.02pv1cpdp7vm11htnfi3ii7iie",
  //    "reminders": {
  //     "useDefault": true
  //    }
  //   }
  //  ]
  // }
  // 
  // 

  const json = new JsonObject();
  json.loadSb(sbResponse);

  const numEvents = json.sizeOfArray('items');
  let i = 0;
  while (i < numEvents) {
    json.i = i;
    console.log(json.stringOf('items[i].summary'));
    console.log(json.stringOf('items[i].start.dateTime'));
    console.log(json.stringOf('items[i].end.dateTime'));
    console.log('--');
    i++;
  }

  // Sample output:

  // Eat Lou Malnati's Pizza
  // 2017-08-12T12:00:00-05:00
  // 2017-08-12T13:00:00-05:00
  // --
}