/
index.js
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/
index.js
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/**
* Copyright 2017 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
const functions = require('firebase-functions');
const {google} = require('googleapis');
const {WebhookClient} = require('dialogflow-fulfillment');
// Enter your calendar ID below and service account JSON below, see https://github.com/dialogflow/bike-shop/blob/master/README.md#calendar-setup
const calendarId = '<INSERT CALENDAR ID HERE>'; // looks like "6ujc6j6rgfk02cp02vg6h38cs0@group.calendar.google.com"
const serviceAccount = {}; // Starts with {"type": "service_account",...
// Set up Google Calendar Service account credentials
const serviceAccountAuth = new google.auth.JWT({
email: serviceAccount.client_email,
key: serviceAccount.private_key,
scopes: 'https://www.googleapis.com/auth/calendar'
});
const calendar = google.calendar('v3');
process.env.DEBUG = 'dialogflow:*'; // enables lib debugging statements
const timeZone = 'America/Los_Angeles';
const timeZoneOffset = '-07:00';
exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => {
const agent = new WebhookClient({ request, response });
function hours (agent) {
if (currentlyOpen()) {
agent.add(`We're open now! We close at 5pm today.`);
} else {
agent.add(`We're currently closed, but we open every weekday at 9am!`);
}
}
function makeAppointment (agent) {
// Calculate appointment start and end datetimes (end = +1hr from start)
const dateTimeStart = new Date(Date.parse(agent.parameters.date.split('T')[0] + 'T' + agent.parameters.time.split('T')[1].split('-')[0] + timeZoneOffset));
const dateTimeEnd = new Date(new Date(dateTimeStart).setHours(dateTimeStart.getHours() + 1));
const appointmentTimeString = dateTimeStart.toLocaleString(
'en-US',
{ month: 'long', day: 'numeric', hour: 'numeric', timeZone: timeZone }
);
// Check the availibility of the time, and make an appointment if there is time on the calendar
return createCalendarEvent(dateTimeStart, dateTimeEnd).then(() => {
agent.add(`Ok, let me see if we can fit you in. ${appointmentTimeString} is fine!. Do you need a repair or just a tune-up?`);
}).catch(() => {
agent.add(`I'm sorry, there are no slots available for ${appointmentTimeString}.`);
});
}
let intentMap = new Map();
intentMap.set('Hours', hours);
intentMap.set('Make Appointment', makeAppointment);
agent.handleRequest(intentMap);
});
function currentlyOpen () {
// Get current datetime with proper timezone
let date = new Date();
date.setHours(date.getHours() + parseInt(timeZoneOffset.split(':')[0]));
date.setMinutes(date.getMinutes() + parseInt(timeZoneOffset.split(':')[0][0] + timeZoneOffset.split(':')[1]));
return date.getDay() >= 1 &&
date.getDay() <= 5 &&
date.getHours() >= 9 &&
date.getHours() <= 17;
}
function createCalendarEvent (dateTimeStart, dateTimeEnd) {
return new Promise((resolve, reject) => {
calendar.events.list({
auth: serviceAccountAuth, // List events for time period
calendarId: calendarId,
timeMin: dateTimeStart.toISOString(),
timeMax: dateTimeEnd.toISOString()
}, (err, calendarResponse) => {
// Check if there is a event already on the Bike Shop Calendar
if (err || calendarResponse.data.items.length > 0) {
reject(err || new Error('Requested time conflicts with another appointment'));
} else {
// Create event for the requested time period
calendar.events.insert({ auth: serviceAccountAuth,
calendarId: calendarId,
resource: {summary: 'Bike Appointment',
start: {dateTime: dateTimeStart},
end: {dateTime: dateTimeEnd}}
}, (err, event) => {
err ? reject(err) : resolve(event);
}
);
}
});
});
}