Wp-calypso: [Gutenboarding]: Investigation adding existing user login

[ramonjd]

We want existing users to be able to login in Gutenboarding. We don't want to send them off to a different page, e.g., wordpress.com/login, like we do in the current signup flow.

In very general terms, when an existing user is prompted to sign up, we'll offer a link to the login form which they can fill out _in situ_.

This might be rendering a login component in place of the signup component. The signin flow should otherwise be the same.

This take will require:

• investigation of how users log in now in Calypso
• an update on the latest UI/UX from design. See pbAok1-bP-p2 to get started
• a decision/proposal as to what and how to port to Gutenboarding, including, ideally, buy-in from the Create team on required components, state, and so on

Outcomes

Once we get an idea, or even half an idea of how we'd like to proceed, let's p2 a spec and ask for feedback from Create, design and others. 👍

Related reading

How native apps might unify WordPress.com sign up and login pauD4L-Bb-p2

[roo2]

I've started porting code across from client/blocks/login/login-form.jsx. I'm planning on getting passwordless login and username/password login working and leaving out social login for now.

• [x] Add route
• [x] Add basic form UI elements
• [x] add to data-stores/user: getAccountType
• [ ] add to data-stores/user: loginUser
• [ ] add to data-stores/user: sendEmailLogin for passwordless login
• [x] manage expand/collapse state of the form
• [ ] work out what happens after login (redirect)
• [ ] error handling for getAccountType (user does not exist)
• [ ] error handling for loginUser (incorrect password, 500 unexpected error)
• [ ] loading states
• [ ] Transition from signup modal to login modal and back
• [ ] CSS styling tidy up
• [ ] work out what to do about social login (Link to existing login page for now?)
• [ ] PR