Refactor to do a real login for OAuth

[mraible]

Fixes #656.

[mshima]

Unfortunately, this won't work with Keycloak at a domain different then localhost.
This cypress bug, got me to implement the login using api.
Otherwise, the oauth2 login would be ready a couple of days ago =).

[mraible]

You're right. If I try to do this:

export SPRING_SECURITY_OAUTH2_CLIENT_PROVIDER_OIDC_ISSUER_URI=http://keycloak:9080/auth/realms/jhipster

I get the following error when running Cypress tests.

This kinda stinks because it means you can't run Cypress tests when running the backend via Docker Compose. That's the only downside I see. You shouldn't be using Keycloak in production anyway. ;)

[mraible]

What do you think about using the API method for Keycloak and using origin for Auth0 and Okta?

[mshima]

Sure, we can move keycloak ui once cypress fixes it.

[mraible]

OK, this PR now uses the API for Keycloak. I tested it on Keycloak with the default settings, as well as:

export SPRING_SECURITY_OAUTH2_CLIENT_PROVIDER_OIDC_ISSUER_URI=http://keycloak:9080/auth/realms/jhipster

I tested it on Okta and Auth0 too. There is a test in login.e2e-spec.ts that fails unless you change your user to have the first name of "Admin".

  // Incompatible with oauth login by api
  it('should login successfully with admin account', () => {
    cy.login(ADMIN_USERNAME, ADMIN_PASSWORD);
    cy.visit('/');

    const welcome = /Welcome, Admin/;
    cy.get('app-home ion-title').invoke('text').should('match', welcome);
  });