async-await-action.js

app.intent('Azure Facts Intent', async (conv, {facts}) => {
    let factToQuery = facts.toString();
    let fact = await buildFactResponse(factToQuery);

    const AZURE_TEXT_SHORT = `Sure, here's a fact about ${fact.title}`;

    conv.ask(new SimpleResponse({
        speech: fact.response,
        text: AZURE_TEXT_SHORT,
    }));

    if (conv.hasScreen) {
        conv.ask(new BasicCard({
            text: fact.response,
            title: fact.title,
            image: new Image({
                url: `${IMAGE_BUCKET}/${fact.image}`,
                alt: fact.title,
            }),
            display: 'WHITE',
        }));

        conv.ask(new Suggestions([SUGGESTION_1, SUGGESTION_2, SUGGESTION_3]));
    }
});

function buildFactResponse(factToQuery) {
    return new Promise((resolve, reject) => {
        if (factToQuery.toString().trim() === 'random') {
            factToQuery = selectRandomFact();
        }

        const query = datastore
            .createQuery('AzureFact')
            .filter('__key__', '=', datastore.key(['AzureFact', factToQuery]));

        datastore
            .runQuery(query)
            .then(results => {
                resolve(results[0][0]);
            })
            .catch(err => {
                console.log(`Error: ${err}`);
                reject(`Sorry, I don't know the fact, ${factToQuery}.`);
            });
    });
}