Feature/lbc 347 new member signup flow

[janbaykara]

This PR adds a new step-by-step signup flow.

[linear]

LBC-347 New member signup flow

https://whimsical.com/new-member-signup-flow-77Q4nktuf9aXHcDDh8FYp8

Current modles:

• MembershipPlanPage (Solidarity, All Books, Selected Books, Community)
  • deliveries_per_year
  • MembershipPlanPrice(s)
    • price
    • interval
    • free_shipping_zones
    • products (n/a, Classic, Contemporary)
  • Upsell (from product to product)

New models:

• MembershipPlanPage

  • title

  • rich text

  • USPs

  • deliveries_per_year

  • display_in_quiz_flow = False

  • syllabi

    (ManyToManyParentalKey -> Syllabus)

  • prices

    (ManyToManyParentalKey -> MembershipPlanPrice)

• SyllabusPage
  • title
  • rich text
  • book variants (for book display)
  • stripe product ID
• MembershipPlanPrice
  • title
  • rich text
  • USPs
  • price
  • interval
  • free_shipping_zones

New view system:

JS or Python? If JS, use Alpine to:

• Query JSON object of plans, syllabuses, prices
• Simple transition is state machine, then could optionally add in some animation later

If Python (probably simpler):

• CreateMembershipView (alias) ->
• SelectDeliveriesView
  • List of MembershipPlanPage.filter(display_in_quiz_flow=True)
• SelectSyllabusView
  • TEST: (if only one syllabus, send straight on to shipping)
• SelectShippingView
  • Cannibalise ShippingForProductView to just get the country
• SelectPaymentPlanView
  • Requires delivery plan + shipping country
• SelectDonationView
• — SignUpView (if not signed up) —
• StripeCheckoutView
  • Requires payment plan + shipping country + donation config
• WelcomeView

How to persist data across the signup flow?

SESSION_ENGINE="django.contrib.sessions.backends.signed_cookies"

and

request.session.get("signup_flow__[VARIABLE_NAME]", False)

Tasks

• Add models and fields
• Create views
• Create URL endpoints
• Create template stubs
• Fill templates with something readable
• Add donation line item
• Configure stripe checkout

Signup flow

• Progress bar
• Fix shipping on Stripe

Deliveries

• Display UK p&p up front
• Fill out the prices
• Add a 'this will cancel your current sub' notice
• Display benefits

Syllabus

• For a single syllabus
  • Change title from "Pick" to "Here is your syllabus"
  • Auto-select the only one
• Display the books?
• syllabus_page.html

Screenshot 2023-11-23 at 10.39.57.png

Shipping

• Light explainer text
• Remove "Shipping country" label from field

Billing

• £Full Price (inc shipping on new line)
• Annual price should include (£X/month paid annually) plus shipping plus total price
• Display benefits
• Display discount calculation versus monthly

Donation

• Add explainer text
• Add a 'continue without donation' option