MS BotFramework LUIS timezoneOffset

bot-luis-timezone-offset.js

/**
 * How to change timestamp in ms botframework on every request to LUIS by the bot
 */
const builder = require('botbuilder');

/**
 * Create custom LUIS recognizer which can change timezoneOffset in LUIS URL to another offset if we have
 * timezone offset somewhere in the session
 * 
 * context.userData has value of session.userData, if you saved something there previously via session.userData.x = 2
 * 
 * @param luisModelUrlStr
 * @return {{recognize: recognize}}
 */
function getLuisRecognizer(luisModelUrlStr) {
    let luisModelUrl = luisModelUrlStr;
    return {
        recognize: (context, callback) => {
            // console.log('context #################');
            // console.log(context);
            // Use UTC offset of selected location
            if (context.userData !== undefined && context.userData.location !== undefined && context.userData.location.utc_offset) {
                luisModelUrl = luisModelUrl.replace('timezoneOffset=0', `timezoneOffset=${context.userData.location.utc_offset}`);
                console.log('############# TIMEZONE ROCKS!!!');
                console.log(luisModelUrl)
            }
            builder.LuisRecognizer.recognize(context.message.text, luisModelUrl, (err, intents, entities) => {
                if (err) {
                    callback(err, null);
                } else {
                    const intentRecognizerResult = {
                        intent: intents[0].intent,
                        score: intents[0].score,
                        intents: intents,
                        entities: entities
                    };
                    // console.log('################# ENTITIES ###########');
                    // console.log(JSON.stringify(entities));
                    callback(null, intentRecognizerResult);
                }
            });
        }
    }
}
const recognizers = [];
// list of LUIS app's connected to the bot
const luisModels = [
    'https://westus.api.cognitive.microsoft.com/luis/v2.0/apps/...',
];
// Create custom LUIS recognizers, which can modify timezoneOffset
luisModels.forEach(model => {
    recognizers.push(getLuisRecognizer(model));
});
const luisConfig = {
    recognizers: recognizers,
    // recognizeOrder: builder.RecognizeOrder.series,
    recognizeOrder: builder.RecognizeOrder.parallel,
    intentThreshold: 0.6
};
const intentDialog = new builder.IntentDialog(luisConfig);