import { type calendar_v3, google } from 'googleapis';
import type {
ListEventsRequest,
ListEventsResponse,
} from '../dtos/googleCalendar.dto.js';
import { getGoogleAuth } from '../providers/google.provider.js';
function authService() {
// Scopes required for the Calendar API
const SCOPES: string[] = [
'https://www.googleapis.com/auth/calendar.readonly',
];
return getGoogleAuth(SCOPES);
}
function getDefaultStartDate(): string {
const date = new Date();
date.setMonth(date.getMonth() - 3);
return date.toISOString();
}
function getDefaultEndDate(): string {
const date = new Date();
date.setMonth(date.getMonth() + 3);
return date.toISOString();
}
export async function listEvents(
req: ListEventsRequest,
): Promise<ListEventsResponse> {
const auth = authService();
const calendar: calendar_v3.Calendar = google.calendar({
version: 'v3',
auth,
});
const res = await calendar.events.list({
calendarId: process.env.GOOGLE_CALENDAR_ID || 'primary',
timeMin: req.startDate || getDefaultStartDate(),
timeMax: req.endDate || getDefaultEndDate(),
singleEvents: true,
orderBy: 'startTime',
});
const events: calendar_v3.Schema$Event[] | undefined = res.data.items;
if (!events) {
return {
events: [],
} as ListEventsResponse;
}
return {
events: events.map((event) => ({
start: event.start?.dateTime || event.start?.date,
end: event.end?.dateTime || event.end?.date,
summary: event.summary,
})),
} as ListEventsResponse;
}
