582 lines
18 KiB
TypeScript
582 lines
18 KiB
TypeScript
import EventOrganizerMail from "./emails/EventOrganizerMail";
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import EventAttendeeMail from "./emails/EventAttendeeMail";
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import { v5 as uuidv5 } from "uuid";
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import short from "short-uuid";
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import EventOrganizerRescheduledMail from "./emails/EventOrganizerRescheduledMail";
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import EventAttendeeRescheduledMail from "./emails/EventAttendeeRescheduledMail";
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const translator = short();
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// eslint-disable-next-line @typescript-eslint/no-var-requires
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const { google } = require("googleapis");
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import prisma from "./prisma";
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const googleAuth = (credential) => {
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const { client_secret, client_id, redirect_uris } = JSON.parse(process.env.GOOGLE_API_CREDENTIALS).web;
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const myGoogleAuth = new google.auth.OAuth2(client_id, client_secret, redirect_uris[0]);
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myGoogleAuth.setCredentials(credential.key);
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const isExpired = () => myGoogleAuth.isTokenExpiring();
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const refreshAccessToken = () =>
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myGoogleAuth
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.refreshToken(credential.key.refresh_token)
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.then((res) => {
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const token = res.res.data;
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credential.key.access_token = token.access_token;
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credential.key.expiry_date = token.expiry_date;
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return prisma.credential
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.update({
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where: {
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id: credential.id,
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},
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data: {
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key: credential.key,
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},
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})
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.then(() => {
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myGoogleAuth.setCredentials(credential.key);
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return myGoogleAuth;
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});
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})
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.catch((err) => {
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console.error("Error refreshing google token", err);
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return myGoogleAuth;
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});
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return {
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getToken: () => (!isExpired() ? Promise.resolve(myGoogleAuth) : refreshAccessToken()),
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};
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};
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function handleErrorsJson(response) {
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if (!response.ok) {
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response.json().then((e) => console.error("O365 Error", e));
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throw Error(response.statusText);
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}
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return response.json();
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}
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function handleErrorsRaw(response) {
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if (!response.ok) {
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response.text().then((e) => console.error("O365 Error", e));
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throw Error(response.statusText);
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}
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return response.text();
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}
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const o365Auth = (credential) => {
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const isExpired = (expiryDate) => expiryDate < Math.round(+new Date() / 1000);
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const refreshAccessToken = (refreshToken) => {
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return fetch("https://login.microsoftonline.com/common/oauth2/v2.0/token", {
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method: "POST",
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headers: { "Content-Type": "application/x-www-form-urlencoded" },
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body: new URLSearchParams({
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scope: "User.Read Calendars.Read Calendars.ReadWrite",
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client_id: process.env.MS_GRAPH_CLIENT_ID,
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refresh_token: refreshToken,
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grant_type: "refresh_token",
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client_secret: process.env.MS_GRAPH_CLIENT_SECRET,
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}),
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})
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.then(handleErrorsJson)
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.then((responseBody) => {
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credential.key.access_token = responseBody.access_token;
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credential.key.expiry_date = Math.round(+new Date() / 1000 + responseBody.expires_in);
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return prisma.credential
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.update({
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where: {
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id: credential.id,
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},
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data: {
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key: credential.key,
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},
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})
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.then(() => credential.key.access_token);
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});
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};
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return {
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getToken: () =>
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!isExpired(credential.key.expiry_date)
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? Promise.resolve(credential.key.access_token)
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: refreshAccessToken(credential.key.refresh_token),
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};
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};
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interface Person {
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name?: string;
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email: string;
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timeZone: string;
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}
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interface CalendarEvent {
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type: string;
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title: string;
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startTime: string;
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endTime: string;
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description?: string;
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location?: string;
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organizer: Person;
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attendees: Person[];
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conferenceData?: ConferenceData;
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}
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interface ConferenceData {
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createRequest: any;
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}
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interface IntegrationCalendar {
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integration: string;
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primary: boolean;
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externalId: string;
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name: string;
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}
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interface CalendarApiAdapter {
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createEvent(event: CalendarEvent): Promise<any>;
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updateEvent(uid: string, event: CalendarEvent);
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deleteEvent(uid: string);
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getAvailability(dateFrom, dateTo, selectedCalendars: IntegrationCalendar[]): Promise<any>;
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listCalendars(): Promise<IntegrationCalendar[]>;
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}
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const MicrosoftOffice365Calendar = (credential): CalendarApiAdapter => {
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const auth = o365Auth(credential);
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const translateEvent = (event: CalendarEvent) => {
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const optional = {};
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if (event.location) {
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optional.location = { displayName: event.location };
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}
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return {
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subject: event.title,
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body: {
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contentType: "HTML",
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content: event.description,
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},
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start: {
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dateTime: event.startTime,
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timeZone: event.organizer.timeZone,
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},
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end: {
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dateTime: event.endTime,
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timeZone: event.organizer.timeZone,
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},
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attendees: event.attendees.map((attendee) => ({
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emailAddress: {
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address: attendee.email,
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name: attendee.name,
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},
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type: "required",
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})),
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...optional,
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};
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};
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const integrationType = "office365_calendar";
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function listCalendars(): Promise<IntegrationCalendar[]> {
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return auth.getToken().then((accessToken) =>
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fetch("https://graph.microsoft.com/v1.0/me/calendars", {
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method: "get",
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headers: {
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Authorization: "Bearer " + accessToken,
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"Content-Type": "application/json",
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},
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})
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.then(handleErrorsJson)
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.then((responseBody) => {
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return responseBody.value.map((cal) => {
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const calendar: IntegrationCalendar = {
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externalId: cal.id,
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integration: integrationType,
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name: cal.name,
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primary: cal.isDefaultCalendar,
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};
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return calendar;
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});
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})
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);
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}
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return {
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getAvailability: (dateFrom, dateTo, selectedCalendars) => {
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const filter = "?$filter=start/dateTime ge '" + dateFrom + "' and end/dateTime le '" + dateTo + "'";
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return auth
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.getToken()
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.then((accessToken) => {
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const selectedCalendarIds = selectedCalendars
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.filter((e) => e.integration === integrationType)
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.map((e) => e.externalId);
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if (selectedCalendarIds.length == 0 && selectedCalendars.length > 0) {
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// Only calendars of other integrations selected
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return Promise.resolve([]);
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}
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return (
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selectedCalendarIds.length == 0
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? listCalendars().then((cals) => cals.map((e) => e.externalId))
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: Promise.resolve(selectedCalendarIds).then((x) => x)
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).then((ids: string[]) => {
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const urls = ids.map(
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(calendarId) =>
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"https://graph.microsoft.com/v1.0/me/calendars/" + calendarId + "/events" + filter
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);
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return Promise.all(
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urls.map((url) =>
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fetch(url, {
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method: "get",
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headers: {
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Authorization: "Bearer " + accessToken,
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Prefer: 'outlook.timezone="Etc/GMT"',
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},
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})
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.then(handleErrorsJson)
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.then((responseBody) =>
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responseBody.value.map((evt) => ({
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start: evt.start.dateTime + "Z",
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end: evt.end.dateTime + "Z",
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}))
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)
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)
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).then((results) => results.reduce((acc, events) => acc.concat(events), []));
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});
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})
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.catch((err) => {
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console.log(err);
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});
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},
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createEvent: (event: CalendarEvent) =>
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auth.getToken().then((accessToken) =>
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fetch("https://graph.microsoft.com/v1.0/me/calendar/events", {
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method: "POST",
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headers: {
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Authorization: "Bearer " + accessToken,
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"Content-Type": "application/json",
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},
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body: JSON.stringify(translateEvent(event)),
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})
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.then(handleErrorsJson)
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.then((responseBody) => ({
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...responseBody,
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disableConfirmationEmail: true,
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}))
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),
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deleteEvent: (uid: string) =>
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auth.getToken().then((accessToken) =>
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fetch("https://graph.microsoft.com/v1.0/me/calendar/events/" + uid, {
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method: "DELETE",
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headers: {
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Authorization: "Bearer " + accessToken,
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},
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}).then(handleErrorsRaw)
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),
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updateEvent: (uid: string, event: CalendarEvent) =>
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auth.getToken().then((accessToken) =>
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fetch("https://graph.microsoft.com/v1.0/me/calendar/events/" + uid, {
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method: "PATCH",
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headers: {
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Authorization: "Bearer " + accessToken,
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"Content-Type": "application/json",
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},
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body: JSON.stringify(translateEvent(event)),
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}).then(handleErrorsRaw)
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),
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listCalendars,
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};
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};
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const GoogleCalendar = (credential): CalendarApiAdapter => {
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const auth = googleAuth(credential);
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const integrationType = "google_calendar";
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return {
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getAvailability: (dateFrom, dateTo, selectedCalendars) =>
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new Promise((resolve, reject) =>
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auth.getToken().then((myGoogleAuth) => {
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const calendar = google.calendar({ version: "v3", auth: myGoogleAuth });
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const selectedCalendarIds = selectedCalendars
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.filter((e) => e.integration === integrationType)
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.map((e) => e.externalId);
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if (selectedCalendarIds.length == 0 && selectedCalendars.length > 0) {
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// Only calendars of other integrations selected
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resolve([]);
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return;
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}
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(selectedCalendarIds.length == 0
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? calendar.calendarList.list().then((cals) => cals.data.items.map((cal) => cal.id))
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: Promise.resolve(selectedCalendarIds)
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)
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.then((calsIds) => {
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calendar.freebusy.query(
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{
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requestBody: {
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timeMin: dateFrom,
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timeMax: dateTo,
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items: calsIds.map((id) => ({ id: id })),
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},
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},
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(err, apires) => {
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if (err) {
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reject(err);
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}
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resolve(Object.values(apires.data.calendars).flatMap((item) => item["busy"]));
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}
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);
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})
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.catch((err) => {
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console.error("There was an error contacting google calendar service: ", err);
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reject(err);
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});
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})
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),
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createEvent: (event: CalendarEvent) =>
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new Promise((resolve, reject) =>
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auth.getToken().then((myGoogleAuth) => {
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const payload = {
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summary: event.title,
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description: event.description,
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start: {
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dateTime: event.startTime,
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timeZone: event.organizer.timeZone,
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},
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end: {
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dateTime: event.endTime,
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timeZone: event.organizer.timeZone,
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},
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attendees: event.attendees,
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reminders: {
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useDefault: false,
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overrides: [{ method: "email", minutes: 60 }],
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},
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};
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if (event.location) {
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payload["location"] = event.location;
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}
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if (event.conferenceData) {
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payload["conferenceData"] = event.conferenceData;
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}
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const calendar = google.calendar({ version: "v3", auth: myGoogleAuth });
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calendar.events.insert(
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{
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auth: myGoogleAuth,
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calendarId: "primary",
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resource: payload,
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},
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function (err, event) {
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if (err) {
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console.error("There was an error contacting google calendar service: ", err);
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return reject(err);
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}
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return resolve(event.data);
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}
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);
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})
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),
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updateEvent: (uid: string, event: CalendarEvent) =>
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new Promise((resolve, reject) =>
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auth.getToken().then((myGoogleAuth) => {
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const payload = {
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summary: event.title,
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description: event.description,
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start: {
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dateTime: event.startTime,
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timeZone: event.organizer.timeZone,
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},
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end: {
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dateTime: event.endTime,
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timeZone: event.organizer.timeZone,
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},
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attendees: event.attendees,
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reminders: {
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useDefault: false,
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overrides: [{ method: "email", minutes: 60 }],
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},
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};
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if (event.location) {
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payload["location"] = event.location;
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}
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const calendar = google.calendar({ version: "v3", auth: myGoogleAuth });
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calendar.events.update(
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{
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auth: myGoogleAuth,
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calendarId: "primary",
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eventId: uid,
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sendNotifications: true,
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sendUpdates: "all",
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resource: payload,
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},
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function (err, event) {
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if (err) {
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console.error("There was an error contacting google calendar service: ", err);
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return reject(err);
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}
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return resolve(event.data);
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}
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);
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})
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),
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deleteEvent: (uid: string) =>
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new Promise((resolve, reject) =>
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auth.getToken().then((myGoogleAuth) => {
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const calendar = google.calendar({ version: "v3", auth: myGoogleAuth });
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calendar.events.delete(
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{
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auth: myGoogleAuth,
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calendarId: "primary",
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eventId: uid,
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sendNotifications: true,
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sendUpdates: "all",
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},
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function (err, event) {
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if (err) {
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console.error("There was an error contacting google calendar service: ", err);
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return reject(err);
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}
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return resolve(event.data);
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}
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);
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})
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),
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listCalendars: () =>
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new Promise((resolve, reject) =>
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auth.getToken().then((myGoogleAuth) => {
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const calendar = google.calendar({ version: "v3", auth: myGoogleAuth });
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calendar.calendarList
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.list()
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.then((cals) => {
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resolve(
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cals.data.items.map((cal) => {
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const calendar: IntegrationCalendar = {
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externalId: cal.id,
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integration: integrationType,
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name: cal.summary,
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primary: cal.primary,
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};
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return calendar;
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})
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);
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})
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.catch((err) => {
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console.error("There was an error contacting google calendar service: ", err);
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reject(err);
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});
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})
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),
|
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};
|
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};
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|
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// factory
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const calendars = (withCredentials): CalendarApiAdapter[] =>
|
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withCredentials
|
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.map((cred) => {
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switch (cred.type) {
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case "google_calendar":
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return GoogleCalendar(cred);
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case "office365_calendar":
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return MicrosoftOffice365Calendar(cred);
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default:
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return; // unknown credential, could be legacy? In any case, ignore
|
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}
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})
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.filter(Boolean);
|
|
|
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const getBusyCalendarTimes = (withCredentials, dateFrom, dateTo, selectedCalendars) =>
|
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Promise.all(
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calendars(withCredentials).map((c) => c.getAvailability(dateFrom, dateTo, selectedCalendars))
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).then((results) => {
|
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return results.reduce((acc, availability) => acc.concat(availability), []);
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});
|
|
|
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const listCalendars = (withCredentials) =>
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Promise.all(calendars(withCredentials).map((c) => c.listCalendars())).then((results) =>
|
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results.reduce((acc, calendars) => acc.concat(calendars), [])
|
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);
|
|
|
|
const createEvent = async (credential, calEvent: CalendarEvent): Promise<any> => {
|
|
const uid: string = translator.fromUUID(uuidv5(JSON.stringify(calEvent), uuidv5.URL));
|
|
|
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const creationResult = credential ? await calendars([credential])[0].createEvent(calEvent) : null;
|
|
|
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const organizerMail = new EventOrganizerMail(calEvent, uid);
|
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const attendeeMail = new EventAttendeeMail(calEvent, uid);
|
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try {
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await organizerMail.sendEmail();
|
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} catch (e) {
|
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console.error("organizerMail.sendEmail failed", e);
|
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}
|
|
|
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if (!creationResult || !creationResult.disableConfirmationEmail) {
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try {
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await attendeeMail.sendEmail();
|
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} catch (e) {
|
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console.error("attendeeMail.sendEmail failed", e);
|
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}
|
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}
|
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|
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return {
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uid,
|
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createdEvent: creationResult,
|
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};
|
|
};
|
|
|
|
const updateEvent = async (credential, uidToUpdate: string, calEvent: CalendarEvent): Promise<any> => {
|
|
const newUid: string = translator.fromUUID(uuidv5(JSON.stringify(calEvent), uuidv5.URL));
|
|
|
|
const updateResult = credential
|
|
? await calendars([credential])[0].updateEvent(uidToUpdate, calEvent)
|
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: null;
|
|
|
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const organizerMail = new EventOrganizerRescheduledMail(calEvent, newUid);
|
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const attendeeMail = new EventAttendeeRescheduledMail(calEvent, newUid);
|
|
try {
|
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await organizerMail.sendEmail();
|
|
} catch (e) {
|
|
console.error("organizerMail.sendEmail failed", e);
|
|
}
|
|
|
|
if (!updateResult || !updateResult.disableConfirmationEmail) {
|
|
try {
|
|
await attendeeMail.sendEmail();
|
|
} catch (e) {
|
|
console.error("attendeeMail.sendEmail failed", e);
|
|
}
|
|
}
|
|
|
|
return {
|
|
uid: newUid,
|
|
updatedEvent: updateResult,
|
|
};
|
|
};
|
|
|
|
const deleteEvent = (credential, uid: string): Promise<any> => {
|
|
if (credential) {
|
|
return calendars([credential])[0].deleteEvent(uid);
|
|
}
|
|
|
|
return Promise.resolve({});
|
|
};
|
|
|
|
export {
|
|
getBusyCalendarTimes,
|
|
createEvent,
|
|
updateEvent,
|
|
deleteEvent,
|
|
CalendarEvent,
|
|
listCalendars,
|
|
IntegrationCalendar,
|
|
};
|