generate-cognito-users.js

/**
 * 1. Generate users in a format ready for Cognito import.
 */
const args = require('minimist')(process.argv.slice(2))
const fs = require('fs');
const faker = require('faker');

const USER_COUNT = args['number'] || 30;

const BASE_EMAIL = args['baseEmail'];
if (!BASE_EMAIL || BASE_EMAIL.length === 0) {
    throw new Error('Missing "baseEmail" parameter.');
}
const emailSplit = BASE_EMAIL.split('@');
const emailusername = emailSplit[0];
const emaildomain = emailSplit[1];

const csvHeader = "name,given_name,family_name,middle_name,nickname,preferred_username,profile,picture,website,email,email_verified,gender,birthdate,zoneinfo,locale,phone_number,phone_number_verified,address,updated_at,cognito:mfa_enabled,cognito:username";

function generateCognitoUser() {
    let s = "";
    const name = faker.name;
    const firstName = name.firstName().replace(/\W/g, '');
    const lastName = name.lastName().replace(/\W/g, '');
    const username = `${firstName + lastName}`.toLowerCase();
    const email = `${emailusername}+${username}@${emaildomain}`;

    s += firstName + " " + lastName + ","; // name,
    s += "," // given_name,
    s += ","; // family_name,
    s += "," // middle_name,
    s += "," // nickname,
    s += "," // preferred_username,
    s += "," // profile,
    s += "," // picture,
    s += "," // website,
    s += email + ","; // email,
    s += "true," // email_verified,
    s += "," // gender,
    s += "," // birthdate,
    s += "," // zoneinfo,
    s += "," // locale,
    s += ","// phone_number,
    s += "false,"// phone_number_verified,
    s += "," // address,
    s += "," // updated_at,
    s += "false," // cognito:mfa_enabled,
    s += username // cognito:username

    return s;
}

function writeToFile(fileName, header, items) {
    let fd;
    try {
        fd = fs.openSync(fileName, 'w');
        fs.writeFileSync(fd, `${header}\n`);
        items.forEach(item => {
            fs.writeFileSync(fd, `${item}\n`);
        });
        console.log(`Data saved to: ${fileName}`);
    } catch (err) {
        console.log(err, err.stack);
    } finally {
        if (fd !== undefined) {
            fs.closeSync(fd);
        }
    }
}

const users = [];
for (let i = 0; i < USER_COUNT; i++) {
    users.push(generateCognitoUser());
}

writeToFile(
    './cognito-users.csv', 
    csvHeader,
    users
);