simplert/bin/generate-gmail-creds.js

Simple way to send alerts via Slack, Email, Discord, SMS, etc.

#!/usr/bin/env node

const fs = require("fs");
const path = require("path");
const readline = require("readline").createInterface({
  input: process.stdin,
  output: process.stdout
});

const { google } = require("googleapis");

const SCOPES = ["https://www.googleapis.com/auth/gmail.send"];

readline.question(
  "Path to your simplert configuration file: ",
  simplertCfgFile => {
    const simplert_config = require(path.resolve(
      process.cwd() + "/" + simplertCfgFile
    ));

    const {
      client_secret,
      client_id,
      redirect_uris
    } = simplert_config.email.gmail.credentials.installed;
    const oAuth2Client = new google.auth.OAuth2(
      client_id,
      client_secret,
      redirect_uris[0]
    );

    const authUrl = oAuth2Client.generateAuthUrl({
      access_type: "offline",
      scope: SCOPES
    });

    console.log("Authorize this app by visiting this url:", authUrl);
    readline.question("Enter the code from that page here: ", code => {
      readline.close();
      oAuth2Client.getToken(code, (err, token) => {
        if (err) {
          console.error("Error retrieving access token", err);
          process.exit(1);
        }

        simplert_config.email.gmail.token = token;
        fs.writeFile(
          simplertCfgFile,
          JSON.stringify(simplert_config, null, 2),
          function(err) {
            if (err) return console.error(err);
            console.log("Simplert config file updated with Gmail token");
          }
        );
      });
    });
  }
);