import fs from "fs";
import path from "path";
import { google } from "googleapis";
import open from "open";
const SCOPES = ["https://www.googleapis.com/auth/calendar.readonly"];
const TOKEN_PATH = path.join(process.cwd(), "token.json");
const CREDENTIALS_PATH = path.join(process.cwd(), "credentials.json");
export async function getOAuth2Client() {
// Load client secrets
const content = fs.readFileSync(CREDENTIALS_PATH, "utf-8");
const credentials = JSON.parse(content);
const { client_secret, client_id, redirect_uris } = credentials.installed;
const oAuth2Client = new google.auth.OAuth2(
client_id,
client_secret,
redirect_uris[0]
);
// Check for previously stored token
if (fs.existsSync(TOKEN_PATH)) {
const token = fs.readFileSync(TOKEN_PATH, "utf-8");
oAuth2Client.setCredentials(JSON.parse(token));
return oAuth2Client;
}
// Generate a new token
const authUrl = oAuth2Client.generateAuthUrl({
access_type: "offline",
scope: SCOPES,
});
console.log("Authorize this app by visiting this url:", authUrl);
await open(authUrl);
// Prompt for the code
const readline = await import("readline");
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout,
});
const code = await new Promise((resolve) => {
rl.question("Enter the code from that page here: ", (code) => {
rl.close();
resolve(code);
});
});
const { tokens } = await oAuth2Client.getToken(code);
oAuth2Client.setCredentials(tokens);
// Store the token to disk for later program executions
fs.writeFileSync(TOKEN_PATH, JSON.stringify(tokens));
console.log("Token stored to", TOKEN_PATH);
return oAuth2Client;
}
