getUserTimezone

getUserTimezone.js

function getUserTimezone(event, callback) {
    if (event.context.System.apiAccessToken) {
        // Invoke the entitlement API to load timezone
        const options = {
            host: 'api.amazonalexa.com',
            path: '/v2/devices/' + event.context.System.device.deviceId + '/settings/System.timeZone',
            method: 'GET',
            timeout: 1000,
            headers: {
                'Content-Type': 'application/json',
                'Accept-Language': event.request.locale,
                'Authorization': 'bearer ' + event.context.System.apiAccessToken,
            },
        };

        const req = https.get(options, (res) => {
            let returnData = '';
            res.setEncoding('utf8');
            if (res.statusCode != 200) {
                console.log('deviceTimezone returned status code ' + res.statusCode);
                callback();
            } else {
                res.on('data', (chunk) => {
                    returnData += chunk;
                });

                res.on('end', () => {
                    // Strip quotes
                    const timezone = returnData.replace(/['"]+/g, '');
                    callback(moment.tz.zone(timezone) ? timezone : undefined);
                });
            }
        });

        req.on('error', (err) => {
            console.log('Error calling user settings API: ' + err.message);
            callback();
        });
    } else {
        // No API token - no user timezone
        callback();
    }
}