translation-webhook.js

exports.LineWebhook = functions.region(REGION).runWith(runtimeOpts).https.onRequest(async (req, res) => {
    let event = req.body.events[0];
    if (event.message.type === 'text') {
        let input = event.message.text;
        await admin.firestore().collection('translations').doc('inputText').set({
            input: input
        }).then(function () {
            console.log("Document successfully written!");
        }).catch(function (error) {
            console.error("Error writing document: ", error);
        });
    }
    return res.status(200).send(req.method);;
});