import { JWT } from 'google-auth-library';
import { google } from 'googleapis';
import { GoogleCalendarEvent } from './types/index';

require('dotenv').config();
const env = process.env;


export default class GoogleCalendar {
  clientSecret: string = env.GOOGLE_CLIENT_SECRET;
  clientId: string = env.GOOGLE_CLIENT_ID;
  calenderId: string = env.GOOGLE_CALENDAR_ID;
  calendar: any;
  clientEmail: string = env.GOOGLE_CLIENT_EMAIL;
  googlePrivateKey: string = env.GOOGLE_PRIVATE_KEY.replace(/\\n/g, '\n');
  token: any;
  JWT_client: JWT;

  async init() {
    console.log("INIT GOOGLE CALENDAR")
    const jwtClient = await this.authorize();
    this.calendar = google.calendar({ version: 'v3', auth: jwtClient });
    console.log("DONE INIT GOOGLE CALENDAR")
  }

  async authorize() {
    console.log("AUTHORIZE GOOGLE CALENDAR")
    this.JWT_client = new JWT({
      email: this.clientEmail,
      key: this.googlePrivateKey,
      scopes: [
        'https://www.googleapis.com/auth/calendar',
      ]
    });
    const { access_token } = await this.JWT_client.authorize();
    this.token = access_token;
    if (!this.token) {
      throw new Error('Failed to connect to google calendar');
    }
    console.log("GOOGLE CALENDAR AUTHORIZED SUCCESSFULLY")
    return this.JWT_client;
  }

  updateNewEvent(upcomingEvents: GoogleCalendarEvent[]) {
    upcomingEvents.forEach((event: GoogleCalendarEvent) => {
      console.log("UPDATE NEW EVENT", upcomingEvents)

      const options = {
        auth: this.JWT_client,
        calendarId: this.calenderId,
        resource: event,
      }

      this.calendar.events.insert(options, function (err: any, event: any) {
        if (err) {
          console.log('There was an error contacting the Calendar service:  ' + err);
          return;
        }
        console.log(event.description + ' created');
      });
    })

  }
}