Cypress Custom Command for Okta Login

oktaLogin.js

Cypress.Commands.add('loginOkta', () => {
  const optionsSessionToken = {
    method: 'POST',
    url: Cypress.env('session_token_url'),
    body: {
      username: Cypress.env('username'),
      password: Cypress.env('password'),
      options: {
        warnBeforePasswordExpired: 'true'
      }
    }
  }

  cy.request(optionsSessionToken).then(response => {
    const sessionToken = response.body.sessionToken;
    const qs = {
      client_id: Cypress.env('client_id'),
      code_challenge: Cypress.env('code_challenge'),
      state: Cypress.env('state'),
      nonce: Cypress.env('nonce'),
      redirect_uri: Cypress.env('redirect_uri'),
      code_challenge_method: 'S256',
      response_mode: 'fragment',
      response_type: 'code',
      scope: ['openid', 'profile', 'email'],
      sessionToken: sessionToken
    }

    cy.request({
      method: 'GET',
      url: Cypress.env('auth_token_url'),
      form: true,
      followRedirect: false,
      qs: qs
    }).then(responseWithToken => {
      const redirectUrl = responseWithToken.redirectedToUrl;

      const accessToken = redirectUrl
      .substring(redirectUrl.indexOf('access_token'))
      .split('=')[1]
      .split('&')[0];

      cy.wrap(accessToken).as('accessToken');

      cy.visit(redirectUrl).then(() => {
        cy.visit('/');
      });
    });
  });
})